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  • Pollution  (112)
  • Sociology  (91)
  • Chennai, India  (70)
  • Freshwater Biological Association  (47)
  • Lagos (Nigeria)  (44)
  • Bay of Bengal Large Marine Ecosystem Project (BOBLME)  (23)
  • Phuket, Thailand  (23)
  • California Department of Fish and Game  (15)
  • 2020-2022  (199)
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  • 2020-2022  (199)
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  • 1
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    Yemaya, No. 41, November 2012 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11184 | 25 | 2015-09-24 08:22:47 | 11184 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 2
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    Yemaya, No. 42, March 2013 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11185 | 25 | 2015-09-24 08:21:49 | 11185 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    Yemaya, No. 37, July 2011 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11180 | 25 | 2015-09-24 08:24:52 | 11180 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    Yemaya, No. 40, July 2012 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11183 | 25 | 2015-09-24 08:23:16 | 11183 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Yemaya, No. 39, March 2012 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11182 | 25 | 2015-09-24 08:23:48 | 11182 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    SAMUDRA Report No. 65, July 2013 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11301 | 25 | 2015-05-19 15:10:57 | 11301 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-30
    Description: Sticky issues - An update on the recent SSF guidelines, Forced into slavery- New Zealand, Grabbing oceans- MPAs fail to recognize human-rights issues, Getting rights wrong- GPO ignores the voices of SSF people, Smoking kilns- artisan fishers on the map, Depending on mangroves- Vietnam, Statement made at the GDF on work in fishing convention, fishy partnership- proposed GPO, Champion for fishers - Rolf Willmann
    Keywords: Conservation ; Fisheries ; Management ; Policies ; Sociology ; Forced labour ; fishing rights ; GPO ; small-scale fisheries ; MPAs ; mangroves
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    SAMUDRA Report No. 63, November 2012 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/11177 | 25 | 2013-06-02 15:22:23 | 11177 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-28
    Description: Contents: CBD COP11. Fisheries and the Right to Food.Indonesia’s Flying Fishermen.Subsidies and Fisheries in Chile.Fishing People of the North.Women Seaweed Harvesters.
    Description: ISSN 0973-1121
    Keywords: Aquaculture ; Fisheries ; Pollution ; Sociology
    Repository Name: AquaDocs
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  • 8
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    Getting it right: incorporating social aspects into MPA planning and implementation (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11229 | 25 | 2013-09-01 09:08:46 | 11229 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: This brochure summarizes a series of case studies done in nine countries—Brazil, India, Indonesia, Mexico, Senegal, South Africa, Spain,Tanzania and Thailand—on the role of communities in the planning and implementation of marine protected areas (MPAs).The studies demonstrate that communities can be powerful allies in efforts for conservation and management of coastal and marine resources. They also underline the need for systematic attention, capacity building, funding and other resources for effective implementation of Programme Element 2 on governance, participation, equity, and benefit sharing of the Programme of Work on Protected Areas (PoWPA) of the Convention on Biological Diversity (CBD).
    Keywords: Conservation ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    Women fish vendors in Mumbai: Workshop report, 2-3 December 2012, Tata Institute of Social Sciences (TISS), Mumbai, India (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11235 | 25 | 2013-09-01 09:03:20 | 11235 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISBN 978-93-80802-10-7
    Keywords: Fisheries ; Policies ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 10
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    Fishery-dependent livelihoods, conservation and sustainable use of biodiversity: the case of marine and coastal protected areas in India (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11231 | 25 | 2013-06-20 10:42:00 | 11231 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-24
    Description: The lacunae in fishing-community engagement in the management and governance of marine and coastal protected areas (MCPAs) were discussed in the 2009 Chennai Workshop organized by the International Collective in Support of Fishworkers (ICSF). To continue the discussion, a second, two-day workshop to review existing legal and institutional mechanisms for implemention and monitoring of MCPAs, titled ‘Fishery-dependent Livelihoods, Conservation and Sustainable Use of Biodiversity: The Case of Marine and Coastal Protected Areas in India’, was held in New Delhi during 1-2 March 2012.The objective was to understand the impact of MCPAs on fishing communities, from an environmental-justice and human-rights perspective, and make specific proposals for better conservation while securing the livelihoods of small-scale fishers. The workshop also served to underscore these issues in light of the upcoming Conference of the Parties (COP) to the Convention on Biological Diversity (CBD), to be held at Hyderabad in October 2012.This publication contains the prospectus of the workshop and a report of the proceedings. It will be useful for fishworkers, non-governmental organizations, policymakers, trade unions, researchers and others interested in natural resource management and coastal and fishing communities.
    Description: ISBN 978-93-80802-08-04
    Keywords: Conservation ; Fisheries ; Sociology
    Repository Name: AquaDocs
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  • 11
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    Yemaya, No. 35, November 2010 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/4796 | 25 | 2015-09-28 08:46:12 | 4796 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-06
    Keywords: Conservation ; Fisheries ; Planning ; Sociology
    Repository Name: AquaDocs
    Type: monograph
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  • 12
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    SAMUDRA Report No. 57, November 2010 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/4795 | 25 | 2013-06-02 14:48:48 | 4795 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-06
    Description: Mackerel mayhem: On the ongoing dispute in northernEurope over the boom in mackerel stocks.Small and mighty: The Banjul civil society declaration onsustainable livelihoods in African fisheries.Building partnerships: The case of Red Sea fisheries management shows how fishers’ rights can be strengthened.The write stuff: The website of Comité Local des Pêches LeGuilvinec celebrates its second anniversary.Frankenfish salmon: The United States is close toapproving genetically engineered salmon.Trawl brawl: Indian and Sri Lankan fishermen have workedto co-exist in the Palk Bay.Tsunami recovery: On the traditional tenure system of the fishing community of Juan Fernández.New goals from Nagoya: The Nagoya meeting of the Convention on Biological Diversity made some progress.Beyond Bangkok: The civil society workshop in Costa Ricafocused on small-scale fishers in Latin America.Securing small-scale fisheries. Recommendations adopted at the San José FAO workshop dealt with small-scale fisheries. (PDF contains 56 pages)
    Keywords: Fisheries ; Management ; Sociology
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  • 13
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    'Fa Tsai', a Chinese edible Nostoc in market. [Translation from: Bulletin of the Japanese Society of Phycology 8 124-126, 1960. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4837 | 1256 | 2011-09-29 15:50:12 | 4837 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The Nostoc 'Fa Tsai' is sometimes seen in Chinese cooking materials stores. It is investigated what 'Fa Tsai' consists of and where it originates.
    Description: Translated from Japanese into English
    Keywords: Biology ; Limnology ; Sociology ; Algae ; Food composition ; Sociological aspects
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  • 14
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    Corroborative studies on the effects of sample variation on three macroinvertebrate biological assessment methods at different water quality states (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5259 | 1256 | 2011-09-29 15:09:27 | 5259 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: In recent collaborative biological sampling exercises organised by the Nottingham Regional Laboratory of the Severn-Trent Water Authority, the effect of handnet sampling variation on the quality and usefulness of the data obtained has been questioned, especially when this data is transcribed into one or more of the commonly used biological methods of water quality assessment. This study investigates if this effect is constant at sites with similar typography but differing water quality states when the sampling method is standardized and carried out by a single operator. An argument is made for the use of a lowest common denominator approach to give a more consistent result and obviate the effect of sampling variation on these biological assessment methods.
    Description: Bilateral study of methods 2 - Pollution Report No.8
    Keywords: Biology ; Limnology ; Pollution ; Sampling ; Samplers ; Methodology ; Standardization ; Rivers ; Invertebrate larvae ; England ; Trent River
    Repository Name: AquaDocs
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  • 15
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    Ecological indicators of water quality in small rivers (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5270 | 1256 | 2011-09-29 15:10:29 | 5270 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: At the present time hydrobiological indicators are widely used for the control of surface water quality. Results of the applying of methods suggested at the 1st Soviet-American seminar (1975), development of improved methods and estimation of their usefulness for various conditions are presented in this report. Among the criteria permitting an estimation of the degree and character of changes in water quality and their connection with the functioning of river ecosystems in general, the biological tests of natural waters appears to be the most universal one and is being carried out in two main directions — ecological and physiological. This study summarises approaches in both directions.
    Keywords: Biology ; Limnology ; Pollution ; River water ; Rivers ; Water quality ; Water quality control ; Indicators
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  • 16
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    The predicting power of models for eutrophication (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5287 | 1256 | 2011-09-29 15:12:00 | 5287 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: Restoration of water-bodies from eutrophication has proved to be extremely difficult. Mathematical models have been used extensively to provide guidance for management decisions. The aim of this paper is to elucidate important problems of using models for predicting environmental changes. First, the necessity for a proper uncertainty assessment of the model, upon calibration, has not been widely recognized. Predictions must not be a single time trajectory; they should be a band, expressing system uncertainty and natural variability. Availability of this information may alter the decision to be taken. Second, even with well-calibrated models, there is no guarantee they will give correct projections in situations where the model is used to predict the effects of measures designed to bring the system into an entirely different ”operating point”, as is typically the case in eutrophication abatement. The concept of educated speculation is introduced to partially overcome this difficulty. Lake Veluwe is used as a case to illustrate the point. Third, as questions become more detailed, such as ”what about expected algal composition”, there is a greater probability of running into fundamental problems that are associated with predicting the behaviour of complex non-linear systems. Some of these systems show extreme initial condition sensitivity and even, perhaps, chaotic behaviour, and are therefore fundamentally unpredictable.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Phytoplankton ; Freshwater lakes ; Models ; Growth ; Modelling ; Equations ; Bacteria ; Prediction ; Netherlands ; Veluwemeer Lake
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  • 17
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    Eutrophication and the management of planktonic algae: What Vollenweider couldn't tell us (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5285 | 1256 | 2011-09-29 15:11:44 | 5285 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: The ”Vollenweider model” is a sophisticated mathematical statement about the long-range behaviour of (mainly temperate) lakes and their ability to support phytoplankton chlorophyll. Misapplication of the model, against which Vollenweider himself warned, has led to many misconceptions about the dynamics of plankton in lakes and reservoirs and about how best to manage systems subject to eutrophication. This contribution intends to frame the most important issues in context of the phosphorus- loading and phosphorus-limitation concepts. Emphasis is placed on the need to distinguish rate-limitation from capacity-limitation, to understand which is more manageable and why, to discern the mechanisms of internal recycling and their importance, and to appreciate the respective roles of physical and biotic components in local control of algal dynamics. Some general approaches to the management of water quality in lakes and reservoirs to eutrophication are outlined.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Phytoplankton ; Models ; Phosphorus ; Ecosystem management ; Nutrients (mineral) ; Plant growth ; Growth regulators ; Freshwater lakes
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  • 18
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    The significance of sedimentation and sediments to phytoplankton growth in drinking-water reservoirs (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5290 | 1256 | 2011-09-29 15:08:14 | 5290 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: In the mesotrophic-eutrophic Saidenbach Reservoir in Saxony, the nanoplankton and cyanobacteria have increased at the expense of diatom dominance, due to a doubling of the external phosphorus load in the last 15 years. However, the phosphorus sedimentation flux is still very high (up to 80% of the input), corresponding to more than 2 g m2 d-1 in terms of dry weight. There is a strong correlation between the abundance of diatoms in the euphotic zone and their sedimentation flux (with a delay of about 2 weeks). Only about 25% of the deposited material could be clearly attributed to plankton biomass; the remainder resulted from flocculation and precipitation processes or directly from the inflow of clay minerals. The ash content of the deposited material was high (73%). Thus the sedimentation flux can be considered to operate as an internal water-treatment/oligotrophication process within the lake. The neighbouring Neunzehnhain Reservoir still has a very clear water with a transparency up to 18 m depth. Though the sediment was not much lower than Saidenbach sediment in total phosphorus and total numbers of bacteria, sulphide was always absent and the ratio of Fe 2+ to Fe 3+ was very low in the upper (0- 5 cm) layer. Thus the external and internal phosphorus loads do not attain the critical level necessary to induce a ”phosphorus - phytoplankton” feedback loop.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Freshwater lakes ; Water quality control ; Phosphorus ; Water reservoirs ; Phytoplankton ; Growth ; Sedimentation ; Sediment composition ; Germany
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  • 19
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    Physical measures to inhibit planktonic cyanobacteriae (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5295 | 1256 | 2011-09-29 15:07:49 | 5295 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: In a small lake, intermittent destratification was installed after several other physico-chemical and physical in-lake therapy measures (phosphorus immobilization, permanent destratification) had been tested without great success. If an aerobic sediment-water interface can be maintained, intermittent destratification removes cyanobacteria and prevents optimal development of other members of the photoautotrophic plankton. During growing seasons, increasing abundances of small-bodied herbivores (Bosmina) and Daphnia may have accounted for relatively low phytoplankton biomass as well. Intermittent destratification is a very fast-working in-lake measure and seems to be applicable even in relatively shallow lakes (〈 15 m), in which permanent destratification seems to be risky.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Destratification ; Ecosystem management ; Water quality control ; Phosphorus ; Eutrophic lakes ; Inhibitors ; Phytoplankton ; Zooplankton ; Biomass ; Germany ; Fischkaltersee
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  • 20
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    Calcite covering of sediment as a possible way of curbing blue-green algae (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5291 | 1256 | 2011-09-29 15:07:52 | 5291 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: Natural calcite precipitation in lakes is a well-known control mechanism of eutrophication. In hard-water lakes, calcite deposits on the flat bottoms of shallow lakes and near the shores of deeper lakes resulted from biogenic decalcification during the millenia after the last glacial period. The objective of a new restoration technology is to intensify the natural process of precipitation by utilizing the different qualities of calcareous mud layers. In a pilot experiment in Lake Rudower See, East Germany, phosphorus-poor deeper layers of the sediments were flushed out and spread over the phosphorus-rich uppermost sediments, to promote the co- precipitation of calcite with phosphorus from the water-column.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Freshwater lakes ; Phosphorus ; Calcitization ; Algal blooms ; Calcite ; Sedimentation ; Germany
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  • 21
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    A control of gas-vacuolate cyanobacteria (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5301 | 1256 | 2011-09-29 15:07:11 | 5301 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: The cyanobacteria that cause problems in water supply are principally the colonial forms that are buoyed up by gas vesicles. The success of these organisms is due, in part, to their gas vesicles, which enable them to perform vertical migrations or to maintain themselves in the euphotic zone. The gas vesicles are also the root cause of the problems. In calm periods they cause the cyanobacteria to float to the water surface forming noxious scums, and they may prevent the colonies from sedimenting in water treatment plants. Gas vesicles are hollow, gas-filled structures; they are rigid but can be collapsed by the application of pressure. Their critical collapse pressure is influenced by their dimensions, which vary in different organisms. Gas vesicles are formed by the assembly of two types of protein, which determine their mechanical and physical properties. Methods for collapsing gas vesicles in natural populations of cyanobacteria will be considered. They may have application to the control of cyanobacteria in water supply.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Gases ; Buoyancy ; Algae ; Bacteria ; Photosynthesis ; Growth ; Competition
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  • 22
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    Changes of water quality and sediment phosphorus of a small productive lake following decreased phosphorus loading (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5293 | 1256 | 2011-09-29 15:08:09 | 5293 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: Esthwaite Water is the most productive or eutrophic lake in the English Lake District. Since 1945 its water quality has been determined from weekly or biweekly measurements of temperature, oxygen, plant nutrients and phytoplankton abundance. The lake receives phosphorus from its largely lowland-pasture catchment, sewage effluent from the villages of Hawkshead and Near Sawrey, and from a cage-culture fish farm. From 1986 phosphorus has been removed from the sewage effluent of Hawkshead which was considered to contribute between 47% and 67% of the total phosphorus loading to the lake. At the commencement of phosphorus removal regular measurements of phosphorus in the superficial 0-4 cm layer of lake sediment were made from cores collected at random sites. Since 1986 the mean annual concentration of alkali-extractable sediment phosphorus has decreased by 23%. This change is not significant at the 5% level but nearly so. There has been no marked change in water quality over this period. Summer dominance of blue-green algae which arose in the early 1980s after decline of the previous summer forms, Ceratium spp., has been maintained. Improvement in water quality is unlikely to be achieved at the present phosphorus loading.
    Keywords: Chemistry ; Limnology ; Pollution ; Eutrophication ; Freshwater lakes ; Limnological surveys ; Phosphorus ; Phytoplankton ; Primary production ; Sediment analysis ; Water quality ; England ; Esthwaite Water
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  • 23
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    The scope for biomanipulation in improving water quality (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5288 | 1256 | 2011-09-29 15:08:15 | 5288 | Freshwater Biological Association
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    Publication Date: 2021-07-09
    Description: Biomanipulation is a form of biological engineering in which organisms are selectively removed or encouraged to alleviate the symptoms of eutrophication. Most examples involve fish and grazer zooplankton though mussels have also been used. The technique involves continuous management in many deeper lakes and is not a substitute for nutrient control. In some lakes, alterations to the lake environment have given longer-term positive effects. And in some shallow lakes, biomanipulation may be essential, alongside nutrient control, in re- establishing former aquatic-plant-dominated ecosystems which have been lost through severe eutrophication. The emergence of biomanipulation techniques emphasises that lake systems are not simply chemical reactors which respond simply to engineered chemical changes, but very complex and still very imperfectly understood ecosystems which require a yet profounder understanding before they can be restored with certainty.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Freshwater lakes ; Biomanipulation ; Water quality control
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    Structural dynamic eutrophication models (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5299 | 1256 | 2011-09-29 15:07:19 | 5299 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: This article discusses problems of modelling the seasonal succession of algal species in lakes and reservoirs, and the adaptive selection of certain groups of algae in response to changes in the inputs and relative concentrations of nutrients and other environmental variables. A new generation of quantitative models is being developed which attempts to translate some important biological properties of species (survival, variation, inheritance, reproductive rates and population growth) into predictions about the survival of the fittest, where ”fitness” is measured or estimated in thermodynamic terms. The concept of ”exergy” and its calculation is explored to examine maximal exergy as a measure of fitness in ecosystems, and its use for calculating changes in species composition by means of structural dynamic models. These models accomodate short-term changes in parameters that affect the adaptive responses (species selection) of algae.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Phytoplankton ; Freshwater lakes ; Models ; Growth ; Modelling ; Energy ; Inland water environment ; Thermodynamics
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    A tool for better management of water quality during periods of algal blooms: the case of the River Oise (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5300 | 1256 | 2011-09-29 15:07:17 | 5300 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Like other rivers in the Paris area, the Oise is subject to important seasonal algal blooms. This eutrophication generates notable problems for the production of drinking-water from a treatment plant on the river at Méry. A mathematical model has been developed to simulate variation in water quality in a pre-treatment storage basin, and another model is currently being adapted to model the River Oise. Integration of the two models should provide a comprehensive tool for predicting variations of phytoplankton and water-quality parameters associated with algal blooms. This will be a decision-aid for optimizing control of the treatment process for providing potable water.
    Keywords: Ecology ; Limnology ; Pollution ; Eutrophication ; Algal blooms ; Water treatment ; Water supply ; Modelling ; Models ; Phytoplankton ; Water management ; France ; Oise River
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    The ecological impact of different mechanisms of chronic sub-lethal toxicity on feeding and respiratory physiology (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5307 | 1256 | 2011-09-29 15:06:39 | 5307 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Sub-lethal toxicity tests, such as the scope-for-growth test, reveal simple relationships between measures of contaminant concentration and effect on respiratory and feeding physiology. Simple models are presented to investigate the potential impact of different mechanisms of chronic sub-lethal toxicity on these physiological processes. Since environmental quality is variable, even in unimpacted environments, toxicants may have differentially greater impacts in poor compared to higher quality environments. The models illustrate the implications of different degrees and mechanisms of toxicity in response to variability in the quality of the feeding environment, and variability in standard metabolic rate. The models suggest that the relationships between measured degrees of toxic stress, and the maintenance ration required to maintain zero scope-for-growth, may be highly nonlinear. In addition it may be possible to define critical levels of sub-lethal toxic effect above which no environment is of sufficient quality to permit prolonged survival.
    Keywords: Biology ; Limnology ; Pollution ; Toxicity ; Sublethal effects ; Toxicity tests ; Models ; Metabolism ; Narcosis ; Animal physiology ; Risk management ; Respiration
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    Molecular biomarkers and toxic consequences of impact by organic pollution in aquatic organisms (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5314 | 1256 | 2011-09-29 15:06:13 | 5314 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Organic contaminants are readily bioaccumulated by aquatic organisms. Exposure to and toxic effects of contaminants can be measured in terms of the biochemical responses of the organisms (i.e. molecular biomarkers). The hepatic biotransformation enzyme cytochrome P4501A (CYP1A) in vertebrates is specifically induced by organic contaminants such as aromatic hydrocarbons, PCBs and dioxins, and is involved in chemical carcinogenesis via catalysis of the covalent binding of organic contaminants to DNA (DNA-adducts). Hepatic CYP1A induction has been used extensively and successfully as a biomarker of organic contaminant exposure in fish. Fewer but equally encouraging studies in fish have used hepatic bulky, hydrophobic DNA-adducts as biomarkers of organic contaminant damage. Much less is known of the situation in marine invertebrates, but a CYPlA-like enzyme with limited inducibility and some potential for biomarker application is indicated. Stimulation of reactive oxygen species (ROS) production is another potential mechanism of organic contaminant-mediated DNA and other damage in aquatic organisms. A combination of antioxidant (enzymes, scavengers) and pro-oxidant (oxidised DNA bases, lipid peroxidation) measurements may have potential as a biomarker of organic contaminant exposure (particularly those chemicals which do not induce CYP1A) and/or oxidative stress, but more studies are required. Both CYP1A- and ROS-mediated toxicity are indicated to result in higher order deleterious effects, including cancer and other aspects of animal fitness.
    Keywords: Biology ; Environment ; Pollution ; Biomarkers ; Toxicity ; Aquatic organisms ; Biological pollutants ; Enzymes ; Hydrocarbons ; Mutagens ; Pollutants ; Animal diseases ; Fish
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    Viruses and drinking water (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5320 | 1256 | 2011-09-29 15:05:44 | 5320 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: There is no evidence to indicate that there is a risk of acquiring a virus infection through the consumption of properly treated drinking water, provided the integrity of the distribution system is maintained and there is no post-treatment contamination. The consumption of inadequately treated, untreated or post-treatment contaminated water is, however, associated with a risk of hepatitis A, hepatitis E and viral gastroenteritis. The use of the standard bacterial indicators for water monitoring provides an adequate safeguard against viral contamination.
    Keywords: Health ; Limnology ; Pollution ; Public health ; Microbial contamination ; Viral diseases ; Viruses ; Water treatment ; Pollution indicators
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    Cultural methods of detection for microorganisms: recent advances and successes (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5317 | 1256 | 2011-09-29 15:05:35 | 5317 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Most microbiological methods require culture to allow organisms to recover or to selectively increase, and target organisms are identified by growth on specific agar media. Many cultural methods take several days to complete and even then the results require confirmation. Alternative techniques include the use of chromogenic and fluorogenic substances to identify bacteria as they are growing, selective capture using antibodies after short periods of growth, molecular techniques, and direct staining with or without flow cytometry for enumeration and identification. Future microbiologists may not use culture but depend on the use of specific probes and sophisticated detection systems.
    Keywords: Engineering ; Limnology ; Pollution ; Water quality ; Microorganisms ; Methodology ; Detection ; Bacteria ; Cultured organisms ; Enzymes ; Immunofluorescence ; Flow cytometry ; Microbiological culture
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    The microbiological quality of water: the nature of the problem (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5315 | 1256 | 2011-09-29 15:06:22 | 5315 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Improvements in methods for the detection and enumeration of microbes in water, particularly the application of techniques of molecular biology, have highlighted shortcomings in the ”standard methods” for assessing water quality. Higher expectations from the consumer and increased publicity associated with pollution incidents can lead to an uncoupling of the cycle which links methodological development with standard-setting and legislation. The new methodology has also highlighted problems within the water cycle, related to the introduction, growth and metabolism of microbes. A greater understanding of the true diversity of the microbial community and the ability to transmit genetic information within aquatic systems ensures that the subject of this symposium and volume provides an ideal forum to discuss the problems encountered by both researcher and practitioner.
    Keywords: Biology ; Limnology ; Pollution ; Water quality ; Microbiology ; Microorganisms ; Hydrologic cycle ; Methodology ; Bacteria ; Bacterial counters ; Public health ; Microbial contamination ; Primary production ; Fungi ; Cryptosporidium
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    Detection of specific bacteria in water: implications of survival strategy (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5318 | 1256 | 2011-09-29 15:05:37 | 5318 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: It is widely recognised that conventional culture techniques may underestimate true viable bacterial numbers by several orders of magnitude. The basis of this discrepancy is that a culture in or on media of high nutrient concentration is highly selective (either through ”nutrient shock” or failure to provide vital co-factors) and decreases apparent diversity; thus it is unrepresentative of the natural community. In addition, the non-culturable but viable state (NCBV) is a strategy adopted by some bacteria as a response to environmental stress. The basis for the non-culturable state is that cells placed in conditions present in the environment cannot be recultured but can be shown to maintain their viability. Consequently, these cells would not be detected by standard water quality techniques that are based on culture. In the case of pathogens, it may explain outbreaks of disease in populations that have not come into contact with the pathogen. However, the NCBV state is difficult to attribute, due to the failure to distinguish between NCBV and non-viable cells. This article will describe experiences with the fish pathogen Aeromonas salmonicida subsp. salmonicida and the application of molecular techniques for its detection and physiological analysis.
    Keywords: Ecology ; Limnology ; Pollution ; Bacteria ; Bacterial diseases ; Detection ; Methodology ; Molecular biology ; Microbiological culture
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    The impact of molecular biology on assessment of water quality: advantages and limitations of current techniques (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5316 | 1256 | 2011-09-29 15:05:33 | 5316 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The advent of molecular biology has had a dramatic impact on all aspects of biology, not least applied microbial ecology. Microbiological testing of water has traditionally depended largely on culture techniques. Growing understanding that only a small proportion of microbial species are culturable, and that many microorganisms may attain a viable but non-culturable state, has promoted the development of novel approaches to monitoring pathogens in the environment. This has been paralleled by an increased awareness of the surprising genetic diversity of natural microbial populations. By targeting gene sequences that are specific for particular microorganisms, for example genes that encode diagnostic enzymes, or species-specific domains of conserved genes such as 16S ribosomal RNA coding sequences (rrn genes), the problems of culture can be avoided. Technical developments, notably in the area of in vitro amplification of DNA using the polymerase chain reaction (PCR), now permit routine detection and identification of specific microorganisms, even when present in very low numbers. Although the techniques of molecular biology have provided some very powerful tools for environmental microbiology, it should not be forgotten that these have their own drawbacks and biases in sampling. For example, molecular techniques are dependent on efficient lysis and recovery of nucleic acids from both vegetative forms and spores of microbial species that may differ radically when growing in the laboratory compared with the natural environment. Furthermore, PCR amplification can introduce its own bias depending on the nature of the oligonucleotide primers utilised. However, despite these potential caveats, it seems likely that a molecular biological approach, particularly with its potential for automation, will provide the mainstay of diagnostic technology for the foreseeable future.
    Keywords: Engineering ; Limnology ; Pollution ; Water quality ; Microbiology ; Microorganisms ; Methodology ; Molecular biology ; DNA ; Polymerase chain reaction ; Detection ; RNA ; Bacteria ; Bacterial diseases
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    Metallothionein as an indicator of water quality: assessment of the bioavailability of cadmium, copper, mercury and zinc in aquatic animals at the cellular level (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5313 | 1256 | 2011-09-29 15:06:23 | 5313 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The study of metallothioneins (MTs) has greatly improved our understanding of body burdens, metal storage and detoxification in aquatic organisms subjected to contamination by the toxic heavy metals, Cd, Cu, Hg and Zn. These studies have shown that in certain organisms MT status can be used to assess impact of these metals at the cellular level and, whilst validation is currently limited to a few examples, this stress response may be linked to higher levels of organisation, thus indicating its potential for environmental quality assessment. Molluscs, such as Mytilus spp., and several commonly occurring teleost species, are the most promising of the indicator species tested. Natural variability of MT levels caused by the organism's size, condition, age, position in the sexual cycle, temperature and various stressors, can lead to difficulties in interpretation of field data as a definitive response-indicator of metal contamination unless a critical appraisal of these variables is available. From laboratory and field studies these data are almost complete for teleost fish. Whilst for molluscs much of this information is lacking, when suitable controls are utilised and MT measurements are combined with observations of metal partitioning, current studies indicate that they are nevertheless a powerful tool in the interpretation of impact, and may prove useful in water quality assessment.
    Keywords: Environment ; Oceanography ; Pollution ; Water quality ; Cadmium ; Copper ; Mercury ; Zinc ; Aquatic animals ; Cytology ; Metallothioneins ; Environmental monitoring ; Indicators ; Scotland
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    Production of positive controls for calcivirus-specific PCR using recombinant baculiovirus technology (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5321 | 1256 | 2011-09-29 15:06:11 | 5321 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Recent advances in our knowledge of the genetic structure of human caliciviruses (HuCVs) and small round-structured viruses (SRSVs) have led to the development of polymerase chain reaction (PCR)-based molecular tests specific for these viruses. These methods have been developed to detect a number of human pathogenic viruses in environmental samples including water, sewage and shellfish. HuCVs and SRSVs are not culturable, and no animal model is currently available. Therefore there is no convenient method of preparing viruses for study or for reagent production. One problem facing those attempting to use PCR-based methods for the detection of HuCVs and SRSVs is the lack of a suitable positive control substrate. This is particularly important when screening complex samples in which the levels of inhibitors present may significantly interfere with amplificiation. Regions within the RNA polymerase regions of two genetically distinct human caliciviruses have been amplified and used to produce recombinant baculoviruses which express RNA corresponding to the calicivirus polymerase. This RNA is being investigated as a positive control substrate for PCR testing, using current diagnostic primer sets. Recombinant baculovirus technology will enable efficient and cost-effective production of large quantities of positive control RNA with a specific known genotype. We consider the development of these systems as essential for successful screening and monitoring applications.
    Keywords: Health ; Limnology ; Pollution ; Polymerase chain reaction ; Viruses ; Viral diseases ; RNA ; Primers ; Cloning ; Diarrhetic shellfish poisoning ; Public health ; Sewages
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    Tastes and odours in potable water:perception versus reality (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5324 | 1256 | 2011-09-29 15:05:13 | 5324 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Tastes and odours are amongst the few water quality standards immediately apparent to a consumer and, as a result, account for most consumer complaints about water quality. Although taste and odour problems can arise from a great many sources, from an operational point of view they are either ”predictable” or ”unpredictable”. The former - which include problems related to actinomycete and algal growth - have a tendency to occur in certain types of water under certain combinations of conditions, whereas the latter - typically chemical spills - can occur anywhere. Long-term control is one option for predictable problems, although biomanipulation on a large scale has had utile success. Detection and avoidance is a more practicable option for both predictable and unpredictable problems, particularly if the distribution network can be serviced from other sources. Where these are not feasible, then water treatment, typically using activated carbon, is possible. In general there is a reasonable understanding of what compounds cause taste and odour problems, and how to treat these. An efficient taste and odour control programme therefore relies ultimately on good management of existing resources. However, a number of problems lie outside the remit of water supply companies and will require more fundamental regulation of activities in the catchment.
    Keywords: Limnology ; Sociology ; Water supply ; Taste ; Odour ; Water treatment ; Fresh water ; Monitoring
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    Towards socially just and sustainable fisheries: ICSF workshop on implementing the FAO voluntary guidelines for securing sustainable small-scale fisheries in the context of food security and poverty eradication (SSF guidelines) report, 21 to 24 July 2014 , Puducherry, India (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/17033 | 25 | 2015-05-19 08:26:00 | 17033 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-10
    Description: This publication is a report of the proceedings of the ICSF Pondy Workshop, which focused on the FAO’s Voluntary Guidelines for Securing Sustainable Small-scale Fisheries in the Context of Food Security and Poverty Eradication (SSF Guidelines). The workshop brought together 71 participants from 20 countries representing civil society organizations, governments, FAO, academia and fishworker organizations from both the marine and inland fisheries sectors. This report will be found useful for fishworker organizations, researchers, policymakers, members of civil society and anyone interested in small-scale fisheries, food security and poverty eradication.
    Keywords: Fisheries ; Sociology ; international conferences ; vgssf ; ssf guidelines ; FAO ; voluntary guidelines ; sustainable fisheries ; food security ; poverty ; small scale fisheries ; sustainable management ; ICSF ; reports ; India ; Tamil Nadu ; The Netherlands ; Costa Rica ; Honduras ; Caribbean ; West Africa ; Thailand ; Indonesia ; Brazil ; Africa ; Latin America
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    Fishing communities and sustainable development in Eastern and Southern Africa: the role of small-scale fisheries, 14 to 17 March 2006, Dar es Salaam, Tanzania (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/17087 | 25 | 2015-05-31 16:58:35 | 17087 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-10
    Keywords: Fisheries ; Sociology ; ICSF ; Conferences ; Eastern and Southern Africa ; Small scale fisheries ; fishing communities ; sustainable development ; Africa ; ESA Fish Workshop ; Western Indian Ocean Marine Science Association ; WIOMSA ; co-management ; conservation ; Eastern Africa ; community based management ; aquaculture ; trade ; gender ; alternate livelihood ; fishworkers organizations ; Masifundise Development Trust
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    Post-tsunami rehabilitation of fisheries livelihoods: ICSF information dossier (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/17151 | 25 | 2015-06-02 18:21:09 | 17151 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-10
    Keywords: Fisheries ; Sociology ; tsunami ; ICSF ; livelihood ; natural disasters ; disaster management ; fishermen ; fishing communities ; coastal communities ; impact ; fisherfolk
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    Scoping study on migrant fishers and transboundary fishing in the Bay of Bengal (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19036 | 17435 | 2016-01-03 11:32:53 | 19036 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-13
    Description: This study assesses the issue of migratory and transboundary fishing. It explores working conditions on fishing vessels operating outside national waters together with issues pertaining to rights and extent of use of legal and illegal foreign labour. The report also provides recommendations for action and further research.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Law ; Policies ; Sociology ; Bay of Bengal ; migrant fishers ; transboundary ; legislation ; illegal labour
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    Format: 102
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    SAMUDRA Report No.83, September 2020 (2021)
    The International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/27105 | 25 | 2021-02-14 02:32:05 | 27105 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-24
    Description: This issue was designed as a special edition to complement ICSF's campaign celebrating the contributions of small-scale fisheries to nutrition and food security within a human-rights-based framework. As the SAMUDRA Comment notes, the COVID-19 pandemic reminds us of the connection between food, health systems, sustainable development and human rights, and offers an opportunity to build back and build forward better.The articles in this edition of SAMUDRA Report – from 10 countries in Africa, Asia, South America and Oceania – reflect on the pandemic's impacts on fisheries, and situates the components of food security in the lives and livelihoods of SSF in several countries.The individual articles are as follows:Indonesia: COVID-19 lockdown measures have struck small-scale fishersUnited States: COVID-19 relief measures have favoured industrial operatorsBrazil: COVID-19 threatens the lives and livelihoods of vulnerable indigenous communities in the AmazonMalawi: Fish is an unrecognized element of trade in the Southern African Development Community (SADC)Ghana: A study explored how access to affordable small fish will reduce hunger and improve nutritionIndonesia: The unique flavours of the East Java cuisine come from the traditional fish processing technique of pindangTimor-Leste: The island nation is closing the gender gap while also providing food securityIndia: Managed sensibly, inland water bodies can provide the country with sustainable food securityIndia: The use of fishmeal to grow shrimp is exporting the precious nutrition that India’s children deserveAnalysis: A roadmap is needed for the role of fish in the right to food and nutritionNigeria: More than COVID-19 itself, the lockdowns have hit the country's unorganized small-scale fishers harderPacific Islands: The push for 30 percent MPAs must not bypass the democratic route used by small island nations to improve fisheries and incomesAnalysis: The 1960 UN Conference on the Law of the Sea (UNCLOS) failed to reach agreement, with India, Chile and Ecuador playing decisive rolesSSF / Blue Economy: There is no reason to wait for consensus on what is justice before acting on injustice in small-scale fisheriesReview: An award-winning film captures the complexities of small-scale fishers and fish processors in West Africa
    Keywords: Environment ; Fisheries ; Sociology ; Samudra Report ; ICSF ; COVID-19 ; lockdown ; Indonesia ; Nigeria ; US ; Brazil ; Indigenous communities ; Amazon ; gender ; Timor-LEste ; Ghana ; Nutrition ; small-scale fisheries ; UNCLOS ; Malawi ; Southern African Development Communities (SADC) ; India ; Pacific Islands ; West Africa ; Fishing communities ; food security ; sustainable management ; income ; small islands ; conservation
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    SAMUDRA Report No. 62, July 2012 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/11176 | 25 | 2013-06-02 15:19:55 | 11176 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-28
    Description: Contents: Customary Rights in South Africa.Artisanal Fishworkers of Brazil.US Waterfronts.Sea Piracy in Nigeria.Civil Society Guidelines on SSF.SBSTTA 16th Session.
    Description: ISSN 0973-1121
    Keywords: Aquaculture ; Environment ; Fisheries ; Pollution ; Sociology
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    SAMUDRA Report No. 64, March 2013 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  http://aquaticcommons.org/id/eprint/11178 | 25 | 2013-06-02 15:08:33 | 11178 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: Contents: At a crossroads: England’s small-scale fisheries are being integrated within a national system.Diversionary tactics: Most of Peru’s anchoveta catches meantfor human consumption are being diverted.Fair, sustainable? The new EU-Mauritania FisheriesAgreement has been welcomed—and spurned.A weighty responsibility: A fisheries reform process isunder way in several parts of Africa.Sri Lanka. Restoring past glory: The Regional Fisheries Livelihoods Programme focuses on fisheries in the Negombo lagoon.Need for vigilance: Summary of a study on globalization andtrade treaties in Atlantic Canadian fisheries.A collective voice: A national workshop on the ILO Work inFishing Convention was held in Goa, India.Short-term model: Brazil is backing increased productionthrough industrial fisheries and aquaculture.Living the learning. 70 participants from the Honduran Caribbean coast gathered at a conference on SSF.Brazil. Towards synthesis: On the approach of civil society organizations towards the proposed SSF Guidlines.
    Description: ISSN 0973-1121
    Keywords: Aquaculture ; Fisheries ; Pollution ; Sociology
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    Guide ICSF : pour mieux comprendre la convention sur le travail dans la pêche, 2007 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11260 | 25 | 2015-06-06 07:58:23 | 11260 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-30
    Description: Ce guide a pour but de faire une présentation rapide de la Convention sur le travail dans la pêche qui a été adoptée en juin 2007 à Genève lors de la 96ème Conférence internationale du Travail (CIT) de l’Organisation internationale du Travail (OIT). Il ne prétend pas donner une interprétation de ses dispositions, ni remplacer la lecture du texte officiel. Il s’agit essentiellement d’aider ceux qui ne connaissent rien de ce nouveau document, et connaissent mal le fonctionnement de l’OIT et de la CIT, à se faire une idée des sujets traités. On espère que ce guide permettra notamment aux pêcheurs et à leurs organisations de comprendre les avantages potentiels et les répercussions de la nouvelle Convention sur la pêche artisanale et à petite échelle des pays en développement. Disponible aussi en ligne sur www.icsf.net
    Description: Traduction: Gildas Le Bihan (CRISLA). The original English version plus versions in Gujarati, Marathi, Telugu, Malayalam and Odia have ID=1561. The Portuguese, Hindi, Tamil, Kannada, Arabic versions have ID=17163
    Keywords: Fisheries ; Law ; Sociology
    Repository Name: AquaDocs
    Type: book
    Format: application/pdf
    Format: application/pdf
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    Yemaya, No. 38, November 2011 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11181 | 25 | 2015-09-24 08:24:19 | 11181 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: ISSN 0973-1156
    Keywords: Aquaculture ; Fisheries ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 12
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  • 45
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    Climate change and fisheries: perspectives from small-scale fishing communities in India on measures to protect life and livelihood (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11190 | 25 | 2013-07-11 15:09:28 | 11190 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: Through consultations with key fisheries-based stakeholders in four States of India, this study attempts to assess perceptions of fishing communities about the impact of climate change on their lives and livelihoods. It also evaluates the traditional knowledge, institutions and practices of fishing communities that are relevant to climate-change preparedness. The study identifies adaptation and mitigation measures that may need to be adopted by fishing communities and the State in relation to climate change. Based on this overall analysis, the study proposes measures to protect the lives and livelihoods of small-scale fishing communities in the context of climate-change policies and programmes at different levels.This study will be useful for researchers, policymakers, students and anyone interested in climate change and its potential effects on the lives and livelihoods of small-scale fishing communities.
    Keywords: Atmospheric Sciences ; Environment ; Fisheries ; Pollution ; Climate Change ; Small-scale fisheries ; Fishing Communities ; India ; Andhra Pradesh ; Maharashtra ; West Bengal ; Sundarbans ; Livelihood ; Kerala ; ICSF ; Marine fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 46
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    Women fish vendors in Mumbai: a study report (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11234 | 25 | 2013-09-01 08:35:28 | 11234 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-29
    Description: Government development programmes and policies in fisheries are focused on the problems and needs of men though women are known to dominate the post-harvest sector in artisanal fisheries and are involved, to varying degrees, in pre-harvest and harvest activities. A lack of women’s participation in decision-making bodies within communities, fisheries organizations and government has resulted in a general neglect of their interests. This has led to a constant demand by women’s-rights activists and organizations to address market-related issues of women vendors. This study, “Women Fish Vendors in Mumbai”, aims to provide insights into the challenges faced by women fish vendors in the city of Mumbai (formerly Bombay).
    Description: ISBN 978-93-80802-13-8
    Keywords: Fisheries ; Policies ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 66
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  • 47
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    Guía del CIAPA : una introducción al convenio sobre el trabajo en el sector pesquero de 2007 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/11261 | 25 | 2015-05-17 14:09:32 | 11261 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-06-30
    Description: El objetivo que persigue esta guía consiste en presentar brevemente el Convenio sobre el trabajo en el sector pesquero de 2007, adoptado en junio del mismo año en Ginebra, Suiza, durante la 96ª reunión de la Conferencia Internacional del Trabajo (CIT) de la Organización Mundial del Trabajo (OIT). No pretende en absoluto interpretar ninguna de sus disposiciones y no debe ser considerado como equivalente al texto oficial. La guía se ha elaborado pensando en facilitar la comprensión del convenio y del funcionamiento de la CIT y de la OIT a personas profanas en la materia. De forma más concreta se espera que esta publicación sirva para que los pescadores y las organizaciones que los representan comprendan las repercusiones del Convenio sobre las pesquerías artesanales y de pequeña escala de los países en desarrollo, así como las posibles ventajas que el Convenio les ofrece.La guía se encuentra igualmente disponible en la página web del CIAPA: www.icsf.net
    Description: ISBN 978-81-904590-7-5
    Keywords: Fisheries ; Law ; Sociology
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 52
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    Transboundary diagnostic analysis: executive summary (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19352 | 17435 | 2016-01-08 11:13:34 | 19352 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: The Transboundary Diagnosis Analysis(TDA) quantifies and ranks water-related environmental transboundary issues and their causes according to the severity of environmental and/or socio-economic impacts. The three main issues in BOBLME are; overexploitation of marine living resources; degradation of mangroves, coral reefs and seagrasses; pollution and water quality.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Keywords: Environment ; Fisheries ; Pollution ; Bay of Bengal ; Transboundary Diagnosis Analysis(TDA) ; water quality ; mangroves ; seagrasses ; coral reefs
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 6
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  • 49
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    Marine pollution and water quality monitoring in Myanmar: assessment and bridging capacity needs (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19369 | 17435 | 2016-01-17 10:12:32 | 19369 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-26
    Description: This study looked at improving knowledge base capacity and enhance capacity to address marine pollution and water quality monitoring issues in Myanmar. Significant capacity needs were identified and a follow up plan presented.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Chemistry ; Pollution ; Myanmar ; marine pollution ; water quality monitoring ; capacity building ; integrated coastal zone management ; Norwegian Institute for Water Research
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 34
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  • 50
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    Socio-economic monitoring report for St Martin's Island, Bangladesh (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19421 | 17435 | 2016-01-17 11:12:58 | 19421 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: This report was based on fieldwork conducted by trainees at the Socio-economic Monitoring (SocMon) workshop held at St Martin's Island. Topics included: community infrastructure; educational services; health services; water and sewerage; coastal and marine activities; material style of life; status of women; governance; and perceptions
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Planning ; Sociology ; Bangladesh ; St Martin's Island ; socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
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    Format: application/pdf
    Format: 29
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    Report of the SocMon capacity development workshop for the Bay of Bengal Large Marine Ecosystem countries in South Asia, St Martin's Island, Bangladesh, 2-11 January, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19420 | 17435 | 2016-01-12 16:25:24 | 19420 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: Socio-economic Monitoring (SocMon) is an approach and set of tools for conducting socio-economic monitoring of changes in coastal communities. Planned outputs of the workshop included: training of local staff i SocMon methodologies; draft a SocMon report for St. Martin's Island; a workplan for implementing the SocMon; a communication strategy; and key inputs to a regional SocMon strategy
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Planning ; Sociology ; Bangladesh ; St Martin's Island ; Socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 41
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    Report of the BOBLME Pollution Working Group meeting, Male, Maldives, 2-3 June 2010 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18934 | 17435 | 2015-12-31 11:09:53 | 18934 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Meeting to develop environmental indicators to measure overall health of BOBLME; identify important coastal water pollution issues: produce conclusions and recommendations to form an action plan.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Environment ; Management ; Pollution ; coastal water pollution ; environmental indicators
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 29
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  • 53
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    Community-based tarball monitoring in the Maldives (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18941 | 17435 | 2016-01-12 17:07:10 | 18941 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Monitoring oil pollution by using students to count tarballs on beaches. Samples were taken between 2006 and 2010; a significant relationship was demonstrated between the abundance of tarballs and exposure to shipping lanes. The contribution of local communities to monitoring marine pollution was also demonstrated.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Environment ; Pollution ; Maldives ; tarballs ; marine pollution ; oil pollution ; communities
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 118
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  • 54
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    Country report on pollution: India (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/18951 | 17435 | 2015-12-31 12:01:00 | 18951 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-12
    Description: Biogeographical features, coastal ecosystems and coastal activities of the Bay of Bengal Coast of India. Overview of sources of pollution, water and sediment quality. Present status of pollution and trans-boundary issues. International instruments adopted, policy and mechanisms for pollution control and enforcement of existing policies and legislations.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Environment ; Management ; Pollution ; India ; pollution ; trans-boundary issues ; water quality ; sediment quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 200
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    Yemaya, No.51, April 2016 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/20828 | 25 | 2016-06-24 08:35:17 | 20828 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-12
    Description: The latest edition of ICSF's newsletter on gender and fisheries, Yemaya No. 51, dated April 2016, features reports from Asia, Africa, Europe and elsewhere as well as notices, interviews and profiles. The editorial in the current issue of Yemaya notes: “Another International Women’s Day (March 8) has gone by, with significant achievements for women in the fisheries across the world. However, while we take stock of, and celebrate the achievements, we should also reflect on the long road of struggle ahead—a struggle for the rights of small-scale fisheries; for the rights of women engaged in fishing, fish trade and fish-work.”
    Keywords: Aquaculture ; Fisheries ; Sociology ; Women in fisheries ; Yemaya newsletter ; ICSF ; gender ; fisheries development ; fishing communities ; aquaculture ; Asia ; post-harvest fisheries ; small scale fisheries ; climate change ; VGSSF ; SSF guidelines ; women ; labour
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 26
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    Report of the round table of women in small-scale fisheries in Goa, 19 February 2017, Panaji, Goa, organized by International Collective in Support of Fishworkers (ICSF) Trust with Saad Aangan (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/21201 | 25 | 2017-10-12 11:02:12 | 21201 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-14
    Description: The round table was organized by Saad Aangan, a Goa-based gender resource group, in collaboration with the International Collective in Support of Fishworkers (Trust) and was attended by thirty-four participants, all (except one fish farmer) women. The workshop was conducted in Konkani, the language of Goa. The programme commenced with a lively song on the fish of Goa sung by Perpet Cardoz, from the fishing community at Zuari, Goa Velha. After brief introductions by the participants, Maria Angelica D' Souza from Saad Aangan explained the purpose of the Round Table. She stated that she had attended a meeting at Chennai on ‘Enhancing capacities of women fishworkers in India for the implementation of the SSF Guidelines’ and noted the value of shared understandings and empowering strategies. She mentioned that she saw the need to have a focussed meeting of that nature in Goa and hence tied up with Saad Aangan, of which she is a volunteer, to facilitate organizing the same, with the support of the ICSF.
    Keywords: Fisheries ; Sociology ; India ; report ; Goa ; women in fisheries ; fishing communities ; livelihoods ; ICSF ; Saad Aangan
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    Type: book
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    Format: application/pdf
    Format: 13
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    Yemaya, No.53, February 2017 (2021)
    The International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/21202 | 25 | 2017-03-21 10:00:33 | 21202 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-14
    Keywords: Aquaculture ; Fisheries ; Sociology ; Women in fisheries ; Yemaya newsletter ; ICSF ; gender ; fisheries development ; fishing communities ; aquaculture
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 16
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    Yemaya, No.56, January 2018 (2021)
    International Collective in Support of Fishworkers (ICSF) | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/23190 | 25 | 2019-01-08 15:31:55 | 23190 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-13
    Keywords: Fisheries ; Sociology ; Women in fisheries ; Yemaya newsletter ; ICSF ; gender ; fisheries development ; fishing communities ; aquaculture ; Caribbean Islands ; India ; Kerala ; Tanzania ; Norway ; FFKP ; AKTEA
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 59
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    Occupation and health hazards in Nigerian coastal artisanal fisheries (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23436 | 19325 | 2018-05-02 08:13:37 | 23436 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: There are more occupational and health hazards in the Fishing Industry than in other occupational categories in the world. In Nigerian Industrial Fisheries, safety measures are regulated while little attention is given to safety standards in the artisanal fisheries. In West Africa, the coastal artisanal canoe fatality rates have been given in 1991-1994 to be 300 to 1,000 per 100,000 fishermen. Thus, the fatality rate in Nigerian artisanal fisheries, (coastal states) has been estimated to be 999 to 3,329 per 100,000 fishermen. The high rate is due to piracy, boundary disputes between fishing communities, unemployment, societal low value for human life and human labour. The paper discusses the various types of accidents associated with artisanal coastal fisheries and give recommendations. Fishermen have rights to safe working conditions in their working environment just as workers in offices and factories on land.
    Description: Includes:-11 refs.
    Keywords: Engineering ; Fisheries ; Sociology ; ASE ; Nigeria ; brackishwater environment ; Hazards ; Navigational hazards ; Hazard assessment ; Health and safety ; Safety regulations
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 128-133
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    Mercury content of some canned seafood collected from Nigerian retail markets (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23444 | 19325 | 2018-05-02 08:30:46 | 23444 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Twenty samples of canned seafood consisting of tuna, mackerel, sardines, prawn and shrimp were collected from retail operations in Victoria Island, Lagos, Nigeria. Mercury content in these canned seafood were determined after digestion by the Association of Official Analytical Chemists methods. The mercury contents for all the canned seafood products have concentrations well below the permissible EU levels for this toxic metal. Their contribution to the body burden can therefore be considered negligible and the canned seafood products seem to be safe for human consumption.
    Description: Includes:-1 table.;13 refs.
    Keywords: Fisheries ; Pollution ; Nigeria ; freshwater environment ; Mercury ; Heavy metals ; Pollution ; Chemical pollution
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 171-173
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    Impact of oil exploration on fisherfolks' livelihood and safety of fisheries industry in Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23443 | 19325 | 2018-05-02 08:29:36 | 23443 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: There have been many outcries in the Nigerian media on the various environmental degradation of the vast water space in the Niger Delta area of Nigeria by oil explorers. About 70% of the Nigerian populace lives in the coastal areas where the occupation is predominantly fishing and farming. For most of the publications, the extents of impact on the fishing industry are not addressed in order for solutions to be given. Production from the fisheries sector has dropped astronomically thereby earning the country a deficit due to importation of frozen fish to the country. In this study, a survey of three states (Bayelsa, Rivers and Delta) in the Niger Delta area of Nigeria was done. The communities studied include Ogulagha, Okobelema and Okpoama. Personal interviews with fishermen and primary data on the sector’s contribution to fish production and GDP were also carried out. The study aimed at finding out the sources and nature of degradation and the impacts such have on the fishing industry and the socio-economics of the fishermen. The study revealed that there are no significant difference in the negative impacts of environmental degradation caused by the activities of the oil companies on the socio-economics of the fishermen ((F2,27=0.59, P〉0.05)) The difference is not significant and the hypothesis is therefore accepted. The major impact on fishing was depletion in catches and low income earnings by fishermen with a resultant poor quality of living and livelihood. Oil spills, foreign vessels incursions and bunkering, vandalization of pipelines were identified sources of depletion in fish catches from the wild. The personal interviews and Focus Group Discussion (FGDs) showed that most heads of communities rely on the remuneration they get from the companies and refused to mobilize the fishermen for joint action against the oil companies. Mitigation measures usually carried out by the oil companies do not actually replenish the destroyed mangroves where breeding of fishes take place. The communities need the Government to institute high level surveillance of the high seas and monitor the activities of oil explorers as well as education of the communities on the effects of bunkering near shoreline.
    Description: Includes:- 1 table
    Keywords: Fisheries ; Pollution ; Sociology ; Nigeria ; Delta State ; Nigeria ; Bayelsa State ; Nigeria Rivers State ; brackishwater environment ; Degradation ; Pollution effects ; Oil spills ; Oil pollution
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 158-161
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    Bioaccumulation of heavy metals in freshwater Clarias anguillaris and Parachanna africana from Lake Geriyo in Yola, Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23447 | 19325 | 2018-05-02 08:36:01 | 23447 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This study was carried out to determine the bioaccumulation of heavy metals in Clarias anguillaris and Parachanna africana from Lake Geriyo Yola, Nigeria using energy dispersive X-ray fluorescence (EDXRF) spectrophotometer. The results in (mg/kg, dry weight) showed different levels of Cr, Cu, Mn, Fe, Ni, Zn, and Pb in the two fish species. The order of heavy metals accumulated by C. anguillaris and P. africana are Cr〉Fe〉Zn 〉 Mn〉Cu〉Ni〉Pb and Ni〉Fe〉Zn〉Cu respectively. The levels of Cr, Mn and Ni in C. anguillaris and in Ni in P. africana were higher than WHO and FEPA recommended maximum permissible limits (MPL) in fish, while the levels of Zn, Cu and Pb were below the standards. The results suggest that Lake Geriyo has high pollution loads of these heavy metals in fishes and could pose a health hazards to man. Consequently, close monitoring of heavy metal loads in Lake Geriyo is recommended with a view to minimizing the risks to health of the population that depend on the lake for their water and fish supply.
    Description: Includes:- 1 table.;13 refs.
    Keywords: Fisheries ; Pollution ; Clarias anguillaris ; Nigeria ; Geriyo L. ; freshwater environment ; Bioaccumulation ; Pollution effects ; Heavy metals ; Hazard assessment
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 185-188
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    Microbiological index of water pollution in Lake Kivu, Rwanda (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23451 | 19325 | 2018-05-04 17:34:56 | 23451 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Investigation of the microbiological purity of Lake Kivu as index of water pollution was carried out in Gisenyi, Kibuye and Cyangugu over a period of 24 months. Microbial load did not differ significantly with season and locations but Fecal Coliform (FC) had positive significant correlation (r = 0.36; p〈0.05) with season. Mean Total Coliform (TC) (cfu/100ml) was highest 7.7 x 105 in Gisenyi and lowest 1.7 x 105 at Cyangugu. These values exceeded the 5000 colony forming units/100ml recommended by WHO for public surface water supplies. Total heterotrophic bacterial (THB), FC, TC and Fecal streptococcus (FS) were widespread with abnormally high values in the sampling locations signifying poor water quality. Microbial isolates from the water samples were of wide range of groups and their occurrence and distribution varied from location to location. Bacillus sp, E. coli, Citrobacter freundii, Klebsiella pneumonia and Proteus sp were the cosmopolitan microbial species in the lake water. The microbial quality of the water was poor rendering it unsafe for domestic purposes without treatment and this was largely caused by direct contamination of the lake by animals and human domestic wastes.
    Description: Includes:- 2 tables.;3 figs.;14 refs.
    Keywords: Biology ; Limnology ; Pollution ; Rwanda ; Kivu L. ; freshwater environment ; Microbial contamination ; Microbiological analysis ; Water quality ; Water pollution
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    Toxicity of drilling fluid XP-07 on microbial load and survival of Oreochromis niloticus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23441 | 19325 | 2018-05-02 08:26:44 | 23441 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: Static bioassays were carried out in the laboratory for 96h to investigate the effect of Parateq a synthetic base mud on the fingerling of Orechromis niloticus and their microbial population. The fingerlings were exposed to different concentrations (0, 1000, 3000, 5000 and 9000Mg/l) of drilling fluid. Fish mortality data were recorded at 24, 48, 72 and 96h and analysed using Finney’s Probit Analysis method to calculate LC50 values (concentration of drilling fluid in water that will kill 50% of the fish population in 96 hours). The 96h LC50 was 2210Mg/l.The mortality increased with increase in concentration, while, the lethal times decreased as concentration increased. The bacterial biomass ranged from 1.59 x 108 to 6.0 x 106CFU/ml while fungal biomass ranged from1.0 x 103 to 2.1 x 104 CFU/ml. Results revealed that there was an increase in fungal biomass with increase in mud concentration and a decrease in bacterial biomass with increase in mud concentration.
    Description: Includes:- 2 tables.;1 fig.;20 refs.
    Keywords: Biology ; Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Aluu Rivers State ; freshwater environment ; Toxicity ; Microbiological analysis ; Microbial contamination ; Pollution effects ; Chemical pollutants
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    Comparative analysis of physicochemical characteristics of ABU and Zaria Dam (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23440 | 19325 | 2018-05-02 08:25:12 | 23440 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The physical and chemical parameters of ABU Dam and Zaria Dam were carried out between September and October 2009. The results obtained in the two water bodies were temperature 27.7 0C, pH (7.5 and 7.3), dissolved oxygen (5.8 mg/l and 5.0 mg/l), biochemical oxygen demand (1.74 mg/l and 2. 16 mg/l), alkalinity (58 mg CaC03/l and 49 mgCaCO3/l) P04-P (2.47 mg/l and 1.59 mg/l) NO3-N (3.67 mg/l and 3.47 mg/l), conductivity (54.70 ~ks-1 and 42.48 ~ks-1), total hydrocarbon (TH) (47.66 mg/l) and 48.00 mg/l) and total dissolved solids (32.68 mg/l and 25.35 mg/l) respectively. There was no significant difference in the mean values of the parameters (P〉0.05) except conductivity and total dissolved solids. The water bodies were found to be neutral with high conductivity. All the properties in the water bodies were in conformity with international standards both for drinking and aquatic life.
    Description: Includes:- 2 tables.;7 refs.
    Keywords: Chemistry ; Limnology ; Pollution ; Nigeria ; Zaria Dam ; Nigeria ; ABU Dam ; freshwater environment ; Physicochemical properties ; Pollution
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    Toxicity of herbicide Propanil on Oreochromis niloticus fingerlings (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23438 | 19325 | 2018-05-02 08:16:59 | 23438 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A static bioassay method to determine the acute toxicity of the herbicide propanil to Oreochromis niloticus was investigated under Laboratory conditions for 96 hours exposure period. Concentrations of propanil used include: 0.0096ml/l, 0.0103ml/l, 0.011ml/l and 0.012ml/l respectively. The lethal concentration (LC50) value of propanil on fingerlings of Oreochromis niloticus was 0.0097ml/l for 96 hours of exposure. The regression equation for probit kill from propanil was found to be Y = 29.84 + 12.33* log conc. (r2 0.9951, Y = Probit kill). Fish showed various abnormal behaviours upon exposure to propanil. Immediate reaction was erratic swimming and tendency to jump out of the test bowl. Others include: restlessness, un-coordinated movement, vertical swimming, air gulping, equilibrium loss, a period of quiescence and eventually death.
    Description: Includes:- 2 tables.;1 fig.;21 refs.
    Keywords: Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Markudi ; freshwater environment ; Toxicity ; Lethal effects ; Toxicants ; Pollution effects ; Fingerlings ; Herbicides
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    Tissue distribution of heavy metals in fin fish from a tidal fish farm in South East Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23450 | 19325 | 2018-05-04 17:32:24 | 23450 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The concentration of heavy metals: Lead (Pb), Cadmium (Cd), Iron (Fe) and Zinc (Zn) in tissues of fin fish from a tidal fish farm in Calabar, South East Nigeria, was determined. The mean levels of heavy metals (~kgg-1) in gills, muscle tissues, liver and intestines of catfish were Pb: 2.39~c1.24; Cd: 0.87~c0.83; Fe: 3.96~c1.55; Zn: 8.15~c3.18. Mean levels in Tilapia were Pb: 0.035~c0.002; Cd: 0.61~c0.05; Fe: 1.09~c0.61; Zn: 2.17~c0.53. There was no significant difference (p〈0.05) in tissue concentrations of Pb and Cd whereas a significant difference (p〈0.05) was observed between Pb and Zn concentrations for both species of fish. Concentrations were also higher in liver, gills and muscle tissues than the intestines. Highest concentrations were observed in the liver and gills in both species. Generally, higher concentrations were observed in liver, gills and muscles of Catfish than in Tilapia. Concentrations of Pb and Fe in Catfish were significantly higher (p〈0.05) than the WHO limits, while Zn and Cd were lower. Tissue concentrations of all the metals in Tilapia were however, within the WHO recommended limits. The concentrations in all the fish tissues were significantly higher (p〈0.05) than in the surrounding water. The observed values in Catfish indicate environmental threat to the health of the fish and indeed the humans that consume them and therefore calls for environmental surveillance in the area
    Description: Includes:- 3 tables.;1 fig.;7 refs.
    Keywords: Aquaculture ; Pollution ; Nigeria ; Calabar ; freshwater environment ; Heavy metals ; Tissues ; Pollution ; Pollution effects
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    Effects of locust bean (Parkia bigtobosa) effluent on the histology of Clarias gariepinus juveniles (Burchell 1822) (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23448 | 19325 | 2018-05-02 08:37:49 | 23448 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The poor nature of most Agricultural processing practices in Nigeria have had adverse effect on our environment, and our aquatic resources are of no exception. This study was conducted to ascertain the median lethal concentration of the effluent within the 96 hours period and also to ascertain the extent of damage on some of the histological characteristics of the Clarias gariepinus juveniles. Juveniles of the Clarias gariepinus (mean weight 30g) were exposed to varied concentrations of the locust bean effluent under the standard laboratory conditions. Data on mortality corresponding to the various concentrations were subjected to the probit and logit transformations and used to calculate the LC50 graphically. The result shows the toxicity of the locust bean effluent to Clarias gariepinus juveniles as 0.089mg/L (treatment 4) during the period of study. Exposure to both the acute and subletheal concentrations resulted in a number of physiological dysfunction of the test fish. Observation of the fish under the tests revealed unbalanced swimming patterns loss of reflex, rapid opercular movements and gasping for air. Histopathological examination of the gill and liver of the treated fish showed signs of damage, ranging from Hypoxia, lesions, necrosis, fibrosis cell stasis and hyperplasia at the sublethal levels.
    Description: Includes:- 2 tables.;1 fig.;22 refs.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Parkia bigtobosa ; freshwater environment ; Toxicity ; Lethal effects ; Pollution ; Histology
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    Policy and policy framework for growth of women's fisheries activities: accessing micro credit facilities for women in fisheries development as a fundamental human right (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23517 | 19325 | 2018-05-08 15:46:10 | 23517 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: This paper begins with a review of policy issues on status of women’s fundamental human rights and the effects on their optimal participation in fisheries development. The focus of the paper is on the importance of women in fisheries activities within the fisheries industry. Issues pertaining to gender inequality in the rural communities affecting women in the fisheries sector, and solutions to overcome some of these issues are discussed. The degree of participation of women in the fisheries sector is an overall reflection of the cultures, the laws of the country and the priority given by the state to ensure gender equity. Generally, women in Nigeria, especially those from depressed fisheries households, participate actively in many fisheries activities, including aquaculture. However, the lower status accorded to women in many of the communities in Nigeria means that their contribution to fisheries is undervalued and unrecognized. Issues that need to be addressed with regards to participation of women in fisheries which include sensitivity to gender issues in fishery, improve living conditions, promote programs relating to women, reconsidering the practice of relating fishing rights to their right to speak and others are discussed in the paper The paper also looks at the possibilities of articulating measures in sensitizing the womenfolks through education, especially in knowing their fundamental human rights as specified by the UN’s articles, especially ability to access micro-credit in fisheries activities, the nature of loans and alternative strategies to tackle the problem of small-scale credit to women in fisheries development in the nation.
    Description: Includes:- 2 tables.;2 figs.;12 refs.
    Keywords: Fisheries ; Sociology ; Nigeria ; Ibeju Lekki ; freshwater environment ; Women ; Fishery policy ; Financial institutions ; Financial resources ; Financing
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    Review of crude oil pollution effects on fish and fisheries of Nigerian waters (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24177 | 19325 | 2018-05-13 19:01:32 | 24177 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This paper reviews some adverse effects of crude oil pollution on fish and fisheries in Nigerian waters. The main causes of spillage include blowout, sabotage, corrosion of pipeline, equipment malfunction, operations/maintenance error etc. There are spillage records from 1976 to 1997 with respect to the yearly oil spill incidents, the sizes of spill in relation to the ecological operational areas and the causes of oil spills in relation to sources of oil spill within oil operation. Based on the observation from the analyses of the spillage reports, several steps were recommended in order to reduce the incident of crude oil spillage in Nigeria petroleum industry for the safety of our fragile water bodies and the fisheries resources stock in them.
    Description: Includes: 3 tables.;Also includes: 14 references.
    Keywords: Pollution ; Fisheries ; Nigeria ; Niger Delta ; freshwater environment ; Crude oil ; Pollution effects ; Water quality ; Oil spills ; Pipelines ; Lake fisheries ; Oil pollution ; Pollution surveys ; Pollution control
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    Effect of zinc on the distribution of major cations and anions in the muscle of the fresh water catfish Clarias gariepinus (Burchell, 1822) collected from Ebonyi River, South East Nigeria (2021)
    Lagos (Nigeria) | FISON
    In:  http://aquaticcommons.org/id/eprint/24214 | 19325 | 2018-05-19 06:50:34 | 24214 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effect of zinc exposure evaluated during a four day exposure periods at 13.88ppm, 26.75ppm, 53.5ppm,107ppm and 214ppm to Clarias gariepinus sub-adults showed the 96h LC50 as 26.62ppm. The threshold value was 20.30ppm. The muscle of the exposed fish analyzed showed a significant decrease in all the major cations and anions (Na+, CL-, Ca2+ K+, Mg2+) at (p〈0.05). The research revealed that there was no total inhibition of uptake of the cations and anions and also that uptake of these metals, that is cations and anions (Na+,-CL-, Ca2+ K+, Mg2+) increased rapidly during the 24 hours and dropped at 48 hours and 72 hours and gradually increased at the end of 96 hours showing that it was time dependent. During exposure period, affected fish stood in upright position with their snouts above the water surface, gasping for air. Observation of the exposed fish showed that they were peeling of skin, increase in opercula movement, erratic swimming, quietness and finally death. This research therefore recommends that zinc should be applied appropriately at 26.30ppm to avoid death of fish, man and other aquatic organisms that are the chief consumer.
    Description: Includes: 13 references.
    Keywords: Pollution ; Fisheries ; Clarias gariepinus ; Nigeria ; Ebonyi State ; Ebonyi River ; Zinc ; Muscle ; Cations ; Anions ; Clarias gariepinus ; Zinc ; Freshwater fish ; Cations ; Pollution effects ; Trace metals ; Bioaccumulation ; Muscles ; Pollutants ; Anions ; River fisheries ; Lethal limits
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    Efficiency of different traps for silver catfish fishery and its aquaculture implications in the face of climate change (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24601 | 19325 | 2018-05-21 12:17:22 | 24601 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Climate change has the potential to severely impact coastal and inland environments and ecosystems, and by extension fisheries and aquaculture. Coastal regions of the world are already experiencing flooding due to rise in sea level. In recent times, salinization of coastal areas due to flooding from storm surges and high tidal influence has been observed. Aquaculture is a fast growing agri-business venture in Nigeria presently and many coastal communities derive their livelihood from it. The culture of freshwater fish species that are very sensitive to high salinity may be threatened leading to mortality of stocked fish and loss of livelihood for coastal population. Consequently, there is urgent need for development and domestication of the Silver catfish, Chrysichthys nigrodigitatus that can tolerate higher salinity more than Mudcatfish (Clarias gariepinus). This will help mitigate the impact of salinization of coastal areas arising from sea water flooding on culture of fresh water fish species.
    Description: Includes: 17 references.
    Keywords: Aquaculture ; Pollution ; Fisheries ; Chrysichthys nigrodigitatus ; Clarias gariepinus ; Nigeria ; Climate change ; Silver catfish ; Chrysichthys nigrodigitatus ; freshwater environment ; automation
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    Effects of dispersed Bonny Light crude oil on two life stages of Oreochromis niloticus (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24607 | 19325 | 2018-05-21 12:29:07 | 24607 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The effects of Goldcrew, a chemical dispersant commonly used in crude oil spill incident, to alter interactions between the components of the crude and the biota in the ecosystem, were studied. We used a static renewal bioassay to study its effects on Bonny light crude using the tilapia, 0. niloticus at various concentrations for 50 days. A control experiment was also set up. The exposure concentration of the water accommodated fractions (WAF) of the mixture of the dispersant and Bonny Light crude, dispersed crude (DCOWAF-PAH) and the WAF of Bonny Light alone (COWAF-FIH) were 0.2,0.4,0.8 and 1.6m/L respectively. The mortalities of the fingerlings in different concentrations of the DCOWAF-PAH were 66.7%, 23.3%, 86.75% and 100% in the 0.2. 0.4, 0.8 and 1.6m/L exposure centrations respectively. At these concentrations, mortality was significantly different (P〈0.05) between the fingergerlings and fry, with a total mortality of 69.2% among the fingerlings, while the fry had 5.8% mortality in the 0.8 and 1.6ml/L concentrations with 13.3% 10.0% respectively but the differences were not statistically significant (p〈0.05). There was no mortality in the concentrations of COWAF- PAH. It can be said that Bonny Light was made more toxic to 0. niloticus by the presence of the dispersant; increased the susceptibility of the fingerlings to the mixture of crude and dispersant and influenced the behavior of the fish. There is therefore need to apply dispersants with caution especially around fish breeding and nursery ground.
    Description: Includes: 8 references.
    Keywords: Aquaculture ; Pollution ; Oreochromis niloticus ; Nigeria ; Goldcrew ; Crude oil ; O. niloticus ; freshwater environment ; automation
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    Effect of sublethal concentrations of formalin on the growth of Clarias gariepinus fingerlings (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24611 | 19325 | 2018-05-22 05:58:34 | 24611 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fingerlings of Ciarias gariepinus were exposed to various sublethal concentrations (10.0, 20.0, 30.0. 40.0, 50.0 and 60.0 ~KL/L) formalin and the concentration of 0.0 ~KL/L formalin served as the control. The toxicant led to depressed weight gain in the fish. Severity of this depression was directly proportional to the toxicant concentrations. However, there was no difference (p〉0.05) in weight gain in test fish of various concentrations. Restlessness, loss of balance, erratic swimming behavior, respiratory distress, vertical movement and death, were observed in test media especially in the concentrations 60.0 and 50.0~Kl/L of formalin. Such observation were not recorded in the control tanks.
    Description: Includes: 9 references.
    Keywords: Aquaculture ; Pollution ; Clarias gariepinus ; Nigeria ; Clarias gariepinus ; Formalin ; Concentration ; freshwater environment ; automation
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    Effects of sub-lethal concentrations of glyphosate on behaviour and some biochemical parameters of African catfish (Clarias gariepinus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24614 | 19325 | 2018-05-24 09:35:20 | 24614 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The sub-lethal effect of glyphosate on behavior and some biochemical parameters of African catfish, Clarias gariepinus were investigated using static renewal bioassays and continuous aeration for a period of 28 days using varying concentrations (100ppm, 200ppm, 300ppm, 400ppm and 500ppm). During the exposure period, the fish showed different abnormal behaviours such as restlessness, loss of balance, respiratory distress, grouping together, darting movements, loss of equilibrium, mucous secretion and erratic swimming. At the end of the experiments, the fish were sacrificed and the blood samples were collected. The gill and liver of the fish were removed from biochemical bioassay. Compared with the control, the result showed a significant increase (P〈0.05) in the activities of alanine amino transferase (ALT), and aspartate amino transferase (AST), in both the blood and the gill of exposed fish except in liver where it showed a significant reduction. However the values of lactate dehydrogenase (LDH) and superoxide dismutase (SOD), showed significant increase in the blood with a noticeable decrease in both the gill and liver of exposed fish. The study showed that sub-lethal concentratiom of glyphosate are harmful to Clarias gariepinus. This study shows that sub-lethal concentrations of glyphosate is harmful to Claria gariepinus. The implication of these results in rational exploitation and conservation of fishery resources and the public health risk consuming glyphosate-exposed to fish are highlighted.
    Description: Includes: 22 references.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Glyphosate ; sub-lethal ; Biochemical ; Conservation ; Public health ; freshwater environment ; automation
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    Perception of fish farmers to climate change and adoption strategies in Oyo State, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24667 | 19325 | 2018-05-27 15:06:16 | 24667 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study identified the perception of fish farmers in Oyo State to climate change as well as the adaptation strategies used by them. A two stage stratified sampling method was used to select 156 fish farmers from the four Agriculture Development Programme (ADP) zones and eight local government areas (LGAs) in Oyo State. Structured questionnaires were administered to the fish farmers. Descriptive statistic and linear regression were used to analyses data collected. The result shows that majority were males (84.0%\}, dominant age (66.0%) were within the age bracket of 46-65 years. The farmers are literate as 46.8% have attained secondary education, 69.9% had above six years of experience in fish farming experience and 97.5% were engaged in culturing catfish Clarias spp. The highest portion (70.5%) earns less than N500,000 as income from fish sale. Due to effect of climate change on fish production in the study area, fish farmers reported different types of adaptation strategies. Result of the linear regression analysis indicates that there is a significant (p〈0.05) negative effect of household size and years of fish farming experience and significant (p〈0.1) positive effect of age on farmers' perception of climate change on fish production.
    Description: Includes: 7 references.
    Keywords: Aquaculture ; Pollution ; Nigeria ; Agriculture development programme ; Climate change ; Fish farmers ; freshwater environment ; automation
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    Impact of calcium carbonate on the juveniles of brackish river prawn, Macrobrachium marobrachion under laboratory conditions (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24674 | 19325 | 2018-05-23 07:49:22 | 24674 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The acute toxicity and the effect of sub-lethal concentrations of calcium carbonate on the morphology of M. macrobrachion were investigated under laboratory conditions. The prawns were exposed at 0, 160, 320, 640, 1280, 2560 and 5120 mg/l of CaCO3 using static renewal bioassay for 96 hours for the acute toxicity test. The prawns were also exposed for the chronic test at 0, 20.0, 40.0, and 80.0 mg/1 for a period of two weeks. Mortality occurred in the bioassay tanks at random and the bioassays were monitored throughout the exposure period. Results showed that exposed prawns were not significantly impacted when compared with the control group and correlations were significant at P〈0.05. There were no mortalities in the tanks with the highest concentrations while one death was recorded in the control tank and in the tank with the 160 and 320mg/1 of CaCO3 respectively. The gills of exposed prawns were analyzed using photomicrography and the results showed that the organs had their normal morphological status after the exposure time, implying that CaCO3 is non-toxic to M. macrobrachion. The applications of the result to prawn culture and water quality management were discussed in details.
    Description: Includes: 12 references.
    Keywords: Pollution ; Aquaculture ; Macrobrachium macrobrachion ; Nigeria ; Acute toxicity ; Sub-lethal concentration ; Static renewal bioassay ; Histology ; freshwater environment ; automation
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    Socioeconomic analysis of fish farming in Ogun State, southwest Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24666 | 19325 | 2018-05-27 15:04:08 | 24666 | Fisheries Society of Nigeria
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    Publication Date: 2021-07-15
    Description: Fish farming as an economic activity in Nigeria is predominantly an extensive land based system practiced at subsistence level in water. The socio-economic analysis of fish farming in Ogun State, South-Western Nigeria was carried out using data collected from sixty randomly selected fish farms. Data were analyzed using descriptive statistics, costs and returns, as well as regression analysis. The relationship between fish output and five inputs: feed, fertilizer, lime, labour and fingerlings were measured using Cobb-Dou production model. Results suggest that a unit increase in feed application contributed 68 percent increase to the profitability of the farms and this was significant at p〈0.1. Also, fertilizer was significant at p〈0.05, the results suggest that a unit increase in fertilizer application contributed 5l percent increase to the profitability of the fish farms. The model explained 79% of the variation in total output. On the whole, fish farming was found to be profitable with a benefit-cost ratio of 1.23 and the rate of return on investment is 0.19. It is recommended that fish farmers in the study area should increase their use of feed, lime and fingerlings and decrease their use of fertilizer and labour. Socio-economic characteristics of fish farmers showed that most of them were males, married and middle aged with formal education.
    Description: Includes: 33 references.
    Keywords: Aquaculture ; Sociology ; Nigeria ; Ogun State ; Economic analysis ; Aquaculture ; Fish farming ; Cobb-Douglass model ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: 402-407
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    Report of the SocMon capacity development workshop for the Bay of Bengal Large Marine Ecosystem countries in South Asia, Vidathaltivu, Northern Province, Sri Lanka, 3-11 March, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19422 | 17435 | 2016-01-12 16:24:35 | 19422 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: This Socioeconomic Monitoring (SocMon) training workshop was coordinated by the Small Fisher Federation of Lanka (SFFL). Planned outputs included: participants from Mannar trained in SocMon methodologies; draft SocMon reports fro Vidathaltivu; a workplan for Mannar; a communication strategy for Vidathaltivu/ Mannar; and key inputs to a regional SocMon strategy
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Planning ; Sociology ; Vidathaltivu ; Mannar ; Sri Lanka ; socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 50
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    Report on workshop on enhancing capacities of women fishworkers in India for the implementation of the SSF guidelines, 21–23 November, 2016, Ashoka Hall, Asha Nivas Social Service Centre, Chennai, India (2021)
    The International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/21213 | 25 | 2017-04-03 10:42:02 | 21213 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-14
    Description: The International Collective in Support of Fishworkers (ICSF) Trust organised a national workshop on ‘Enhancing capacities of women fishworkers in India for the implementation of the SSF Guidelines’ in Chennai, India, on November 21-23, 2016. There were 63 participants from nine coastal states of India—participants from Gujarat could not attend. They were informed of the situation and role of women in India’s fisheries, as also the relevance of the ‘Voluntary Guidelines for Securing Sustainable Small-scale Fisheries in the Context of Food Security and Poverty Eradication’ (SSF Guidelines) to women in small-scale fisheries and the opportunities to improve their conditions. This report of the workshop provides the various discussions that were held during the three days. Apart from participants sharing their experiences on all the issues, the challenges they faced, and their struggles and successes to overcome these, resource persons provided information on the legal frameworks and schemes at the national and state levels, as also the mechanisms to access these to help women in small-scale fisheries to promote their interests and protect their rights.
    Keywords: Fisheries ; Sociology ; ICSF ; WIF ; women ; fishing communities ; India ; SSF guidelines ; VGSSF ; smale scale fisheries ; capacity building ; fishworkers ; reports ; food security ; poverty ; FAO
    Repository Name: AquaDocs
    Type: book
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    The effects of dichlorvos (2, 2 - dichlorovinyl phosphate (DDVP)) induced stress on the growth of fingerlings of Clarias gariepinus (Burchell, 1822) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24165 | 19325 | 2018-05-13 13:30:18 | 24165 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study was conducted to determine the effects of dichlorvos ~9 2, 2 - dichlorovinyl dimethyl phosphate (DDVP)~0 on the growth of Clarias gariepinus fingerlings. The experiment was conducted in two phases: the first phase involved the exposure of the fish to different concentrations ~9 0.00 (control), 0.4ppm, 0.5ppm, 0.6ppm, 0.7ppm, 0.8ppm, 0.9ppm, 1.0ppm, 1.1 ppm and 1.2ppm~0 of dichlorvos for four days. The second phase was a recovery process in which the fish that survived from the first phase were introduced into clean, dechlorinated, toxicant-free water and were fed at 3% of their body weight for 12 weeks. The change in weight was measured every fortnight and the feed fed was adjusted to accommodate the change in weight. The highest values for weight gain, percentage weight gain, specific growth rate and average daily weight gain occurred in the control and these values were significantly (p〈0.05) higher than the values of these parameters recorded in the other treatments. The range of values of weight gain, percentage weight gain, specific growth rate and average daily weight gain are 6.76 ~c 3.01-18.45 ~c 8.90g, 69.45 ~c 18.52 - 105.52 ~c 33.67%, 1.54 ~c 0.33 - 2.08 ~c 0.46%/day and 0.48 ~c 0.21 - 1.21 ~c 0.65g respectively. Based on the results of this study, the exposure of fingerlings of Clarias gariepinus to dichlorvos ~9 2, 2- dichlorovinyl dimethyl phosphate (DDVP)~0 affected the growth of the fish. Therefore, the use of dichlorvos on stored grains should be regulated because uncontrolled usage could cause mortality and impairment of growth in fish if the pesticide gets washed into water bodies inhabited by fish.
    Description: Includes: 1 table.;Also includes: 9 references.
    Keywords: Aquaculture ; Ecology ; Pollution ; Clarias gariepinus ; Nigeria ; Lagos State ; Toxicity ; Pesticide ; Clarias gariepinus ; Growth performance ; freshwater environment ; Freshwater fish ; Fingerlings ; Toxicants ; Pesticides ; Toxicity ; Bioaccumulation ; Feeding ; Growth rate ; Pollution effects
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 57-59
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    Acute toxicity of 2, 3-dichlorovinyl dimethyl phosphate (Sniper 1000EC) and response of Clarias gariepinus Burchell under laboratory conditions (2021)
    Lagos (Nigeria) | FISON
    In:  http://aquaticcommons.org/id/eprint/24215 | 19325 | 2018-05-19 06:53:11 | 24215 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study investigated the acute toxicity of 2, 3-dicholrovinyl dimethyl phosphate (Sniper 1000EC) on the African mud catfish, Clarias gariepinus juveniles (mean weight 19.47 ~c 1.05g) using static bioassay method. Sniper 1000EC is an organophosphate pesticide. Each treatment in the acute test was in triplicate with bioassay media concentration of 0,5, 10, 15 and 20 mg/l. Data on mortalities of fish, water physic-chemical parameters as well as changes in haematological indices were subjected to one way analysis of variance (ANOVA) at 5% probability level. Duncan multiple range test was used to separate differences between the means. The 96hr LC50 estimated by probit analysis during the exposure was found to be 8.20mg/l. Behavioural abnormalities of the exposed fish included erratic and uncoordinated swimming and bleached skin with lesion at the highest concentration (20mg/l). Blood dyscrasias attributable to the toxicant was observed with a significant (p〈0.05) decrease in haemoglobin, haematocrit, red blood cells, white blood cells, lymphocytes and monocytes. Mean corpuscular volume (MCV), Mean corpuscular haemoglobin (MCH), neutrophils, eosinophil and basophil increased significantly (p〈0.05) with increasing concentrations of the toxicant. These abnormalities in body and blood parameters as a result of exposure to the toxicant make the study to recommend that the use of Sniper 1000EC by local fishermen be banned to preserve aquatic lives in Nigerian inland water bodies.
    Description: Includes: 22 references.
    Keywords: Fisheries ; Pollution ; Clarias gariepinus ; Nigeria ; Niger State ; Sniper 1000EC ; Clarias gariepinus ; Toxicity ; Haematological indeces ; freshwater environment ; Toxicity ; Phosphate deposits ; Response analysis ; Freshwater fish ; Juveniles ; Bioassays ; Toxicity tests ; Physicochemical properties ; Controlled conditions ; Haematology ; Pollution monitoring
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 250-253
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  • 83
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    Benefit related relationship among artisanal fisher folks of Tombo fish landing community (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24603 | 19325 | 2018-05-21 12:20:04 | 24603 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Benefit related relationship among the artisanal fisher folks of Tomho, a fishing community in Western Rural District of Sierra Leone was studied. The study was carried out to ascertain the socioeconomic activities of the target group, their level of involvement and reasons for going into transactional sexual activities. Eighty (80) structured questionnaires were administered to randomly selected fishermen and people engaged in fish related activities and this was backed up hy the record of HIV cases especially among women at tht Tombo Community Health Centre. Data collected from the interview were treated using measure of central tendency such mean and percentages and results are presented in tables and charts. Respondents age ranged between 15-65 years; sex (fishermen to fish traders) was 71.3% (female) and 28.75% (males) respectively. Marital status of respondents was single, married, divorced, seperated and widowed. Predominant religion of repondents was Islam and Christianity. The study revealed that transactional sex in the study area is mediated by economic structural and environmental factors. The study also revealed that 70.12% of documented HIV cases at the Tombo Community Health Centre were female, while 29.87% were male between the active age of 15-55 years. Fish traders (68.8%) constituted the highest carriers of HIV in the study area.
    Description: Includes: 9 references.
    Keywords: Fisheries ; Sociology ; Nigeria ; Tombo ; Fishing communitu ; Transactional sex ; Socio-economic ; Community health Centre ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
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    Format: application/pdf
    Format: 146-149
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    Acute toxicity test in aquaculture: a review (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24610 | 19325 | 2018-05-22 05:57:31 | 24610 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Acute toxicity test involves estimation of LC50 or LD50 which is the concentration or dose which proved to be lethal causing death to 50% of the tested organisms. This article reviews the methods utilized for the determination of probit and LC50 and also explain the use of Minitab 14 statistical package and Microsoft office excel 2007 for accurate, speedy and qualitative presentation of toxicity results. We also present a brief review on the relationship between uptake route of toxicants and their toxic effects.
    Description: Includes: 19 references.
    Keywords: Aquaculture ; Pollution ; Nigeria ; Bioassay ; LCsub50/sub ; Probit ; Computation ; Minitab 14 ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 171-175
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    Assessment of heavy metals in water and fish from Ibrahim Adamu Lake, Jigawa, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24612 | 19325 | 2018-05-22 05:59:44 | 24612 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study was conducted to assess the levels of heavy metals in water and the flesh of tilapia (Oreochromis niloticus). Water and tilapia were sampled for a period of 12 months from October, 2003-september 2004. Water and muscle tissue were analysed for Cu, Cr, pb, and Zn using flame atomic absorption spectrophotometer. The assessment showed Cr (3.35mg/l), Cu (0.75mg/l), pb (0.81mg/l) in water while Cr(2.27mg/kg) and pb (0.27mg/kg) were found to be high in the tissue samples and were above the values recommended by WHO and the Food and Agricultural Organization (FAO)of the United Nations and therefore not safe for human consumption.
    Description: Includes: 17 references.
    Keywords: Fisheries ; Pollution ; Oreochromis niloticus ; Nigeria ; Heavy metals ; Oreochromis niloticus ; Atomic absorption ; Spectrophotometer ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: 179-181
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    Effects of atrazine on Nile tilapia (Oreochromis niloticus) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24616 | 19325 | 2018-05-22 06:07:52 | 24616 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Mechanization of agriculture to promote and improve the yields from agricultural practices has necessitated the use of pesticides and other agrochemicals. The effects of using these pesticides on the environment are rarely considered by farmers. This study investigated the effects and sub-lethal effect of atrazine on tilapia, an ubiquitous culturable fish species. The 96 hr LC50 was determined using static renewal bioassay method while the effect on haematological parameters was determined after exposure for 3 weeks to sub-lethal doses of atrasine. The LC50 was found to be 6.977mg/l. Sub-lethal exposure resulted in anaemia and increased the white blood cell counts.
    Description: Includes: 11 references.
    Keywords: Aquaculture ; Pollution ; Oreochromis niloticus ; Nigeria ; Nile tilapia ; Atrazine ; Lethal ; Sub-lethal ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 197-199
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  • 87
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    Fisher folk's response to climate change in New Bussa and its environs of Kainji Lake Basin, Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24661 | 19325 | 2018-05-27 14:57:38 | 24661 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The study examined fisher folk responses to climate change in Kainji lake basin. The sample comprises of fisher folks within and New Bussa. Eighty questionnaires were administered to obtain the primary data and analysed using descriptive and inferential statistical tools. The results revealed that majority (70%) of the respondent were male, however (61.2%) of them had tertiary education. Majority (60%) of the respondents were aware of changes in climate in the area. Majority (65%) and (55%) of the respondents were involved in incidence of deforestation and charcoal production respectively. In conclusion, it was discovered that little knowledge about climate change and its effects were found among fisher folk. Therefore it recommends that sensitization workshops/lectures be done to enable the fisher folk have adequate knowledge on climate change and the implications on fisheries activities in the basin.
    Description: includes: 11 references.
    Keywords: Pollution ; Fisheries ; Nigeria ; Climate change ; Fisher folk ; Fishing community ; Awareness ; freshwater environment ; automation
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 380-384
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    The effect of feeding regime and rate on the growth of Clarias gariepinus (Burchell, 1822) fingerlings fed with artificial feed (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24163 | 19325 | 2018-05-26 12:00:29 | 24163 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Fish growth is a function of adequate supply of feed in the right quantity and time. The effect of feeding rate on the growth of Clarias gariepinus (Burchell, 1822) was studied for a period of 22 weeks. The fish were fed at the same percentage body weight throughout the study period and a bi-weekly weight gain was measured. Water quality parameters were also monitored. There was a significant increase in weight gain in daily feeding regime than in the ones in two days feeding regime. The increase in weight for the daily feeding regime was visible as from the 8th week while that for the ones in two days feeding was only significantly different in 22nd week at 0.05 level of significance. The relationship between the two feeding regime types also revealed that the daily feeding performed better than the ones in two days feeding regime.
    Description: Includes: 2 tables.;Also includes: 10 references.
    Keywords: Aquaculture ; Pollution ; Ecology ; Clarias gariepinus ; Nigeria ; Niger ; Feed ; Fish growth ; Feeding regime and weight gain ; freshwater environment ; Feeding ; Growth rate ; Freshwater fish ; Fingerlings ; Length-weight relationships ; Water quality ; Fish culture
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 51-53
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    Socioeconomic monitoring for Vidathaltivu village in Mannar Region, Northern Province, Sri Lanka, 3-11 March, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19424 | 17435 | 2016-01-12 16:27:51 | 19424 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: This report was based on fieldwork conducted by trainees at the Socio-economic Monitoring (SocMon) workshop held at Vidathaltivu, Mannar Region. Topics included: community infrastructure; coastal and marine activities; and governance of marine and coastal areas
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Planning ; Sociology ; Sri Lanka ; Vidathaltivu ; Mannar: Socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 90
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    Report of the Socio-economic Monitoring (SocMon) Training Workshop for Mannar, Sri Lanka, 26 May-1 June, 2015 (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19426 | 17435 | 2016-01-11 09:36:53 | 19426 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-06-28
    Description: The Socio-economic Monitoring (SocMon) training workshop followed up from the capacity building workshop held in Mannar, 2015. It's aims were to validate information collected at the previous workshop, assist in filling in any gaps and develop a vision tree fro future actions. Planned outputs included: a detailed workplan; a workshop process report; and a final socioeconomic base line report for Vidathaltivu village.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Planning ; Sociology ; Sri Lanka ; Mannar ; Vidathaltivu ; socio-economic Monitoring (SocMon)
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 40
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  • 91
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    Socio-economic impact assessment of the shark fishing ban in Maldives (2021)
    Bay of Bengal Large Marine Ecosystem Project (BOBLME) | Phuket, Thailand
    In:  http://aquaticcommons.org/id/eprint/19633 | 17435 | 2016-01-22 10:10:06 | 19633 | Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Details
    Publication Date: 2021-07-02
    Description: Three years after a shark ban was imposed this study assesses the socio-economic impact on the former fisherfolk.
    Description: FAO
    Description: Bay of Bengal Large Marine Ecosystem Project (BOBLME)
    Description: The Bay of Bengal Large Marine Ecosystem Project (BOBLME) was supported by the Global Environment Facility, the Food and Agriculture Organisation of the United Nations, the governments of Norway and Sweden. The project was executed by the Food and Agriculture Organisation of the United Nations.
    Keywords: Conservation ; Fisheries ; Sociology ; Maldives ; shark ban ; socio-economic impact
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 31
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  • 92
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    Traditional knowledge use for the sustainable management of marine and fishing resources (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/21176 | 25 | 2017-03-17 09:47:30 | 21176 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-14
    Description: The use of traditional knowledge can be a powerful conservation tool, providing community support for conservation plans and enabling the inclusion of customary ecological management practices in their design. This study documents three experiences in Central America where traditional knowledge has been used to improve marine spatial planning and frame a new policy oriented toward shuman rights approaches to fisheries and has given better tools for the governance of community managed protected areas. With the support of the International Collective in Support of Fishworkers (ICSF), CoopeSoliDar R.L. selected the case studies (two in Costa Rica, one in Honduras) based on processes that allowed observation of the contribution of traditional knowledge in the generation of information for coming up with a policy for the sustainable use of fishing resources and management practices geared towards marine conservation.
    Keywords: Fisheries ; Sociology ; ICSF ; monograph ; Costa Rica ; traditional knowledge ; fishing communities ; Central America ; human rights ; traditional rights ; protected areas ; community based management ; fishing resources ; sustainable management ; sustainable use
    Repository Name: AquaDocs
    Type: monograph
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    Format: application/pdf
    Format: 108
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    Yemaya, No.52, September 2016 (2021)
    International Collective in Support of Fishworkers | Chennai, India
    In:  icsf@icsf.net | http://aquaticcommons.org/id/eprint/21200 | 25 | 2017-03-21 09:55:46 | 21200 | International Collective in Support of Fishworkers
    Details
    Publication Date: 2021-07-14
    Keywords: Fisheries ; Sociology ; Women in fisheries ; Yemaya newsletter ; ICSF ; gender ; fisheries development ; fishing communities ; aquaculture ; GAF6 ; SSF guidelines ; VGSSF
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 18
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  • 94
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    Preliminary studies on the phytoremediation potential of Phragmites karka in Asa river (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23446 | 19325 | 2018-05-02 08:34:29 | 23446 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The ability of Phragmites karka to absorb and translocate the heavy metals Zinc,Copper,Cadmium and lead was investigated in Asa river, Ilorin Southwest Nigeria.The results of the translocation ability were in the order Cu〉Zn〉Cd and Pb. The bioconcentration factor for Zn,Cu,Cd and Pb in the root, stem and leaf had low values. Heavy metal accumulation in the roots were greater than those of the shoots. The quantities of accumulation in the roots were in the order Zn〉Cu〉Pb〉Cd. This study suggests that Phragmite karka is less suitable for sequestering of these studied heavy metals.
    Description: Includes:- 4 tables.;11 refs.
    Keywords: Limnology ; Pollution ; Phragmites karka ; Nigeria Asa R. ; freshwater environment ; Bioaccumulation ; Heavy metals ; Aquatic plants ; Pollution ; Bioassays
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 181-184
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    Social structure of fish farmers in Osun State, South-West Nigeria (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23473 | 19325 | 2018-05-05 12:56:09 | 23473 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: A survey of seventy-two selected fish farms in Osun State South-West Nigeria was carried out to determine the social status of the fish farmers. Structured questionnaires were used to collect information on age, educational background, marital status, mode of operation and type of culture embarked upon by the farmers among others. Data were analyzed using descriptive statistics. Results showed that most fish farmers (58.3%) in the state were male and were aged between 31-50 years old.91.7% of fish farmers were married and 95.8% had formal education. 63.9% adopted polyculture system. Tilapia and catfish were the two main species being cultured and 75% produced table fish while only 5.6% were involved in fish breeding. 83.3% practised fish farming on part-time basis and 66.7% were involved in non-agricultural occupation to supplement their production. 86.1% owned land either by inheritance or purchase, 8.3% operated on leased land and 5.6% rented the land upon which they operated. 75% of the respondents got their capital from personal savings, 11.1% from cooperatives, and only 5.6% had access to bank loans. 52.8% were regularly visited by extension agents 16.7% were occasionally visited while 30.5% were seldom visited. Only 27.8% belonged to farmers’ association.
    Description: Includes:- 2 tables.;1 fig.;10 refs.
    Keywords: Aquaculture ; Sociology ; Nigeria ; Osun State ; freshwater environment ; Fish culture ; Intensive culture ; Sociological aspects
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 406-411
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    Socio-economic status of the fisherfolk of Yuna Adopted Village in Borgu Local Government Area, Niger State (2021)
    Fisheries Society of Nigeria | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/23474 | 19325 | 2018-05-05 12:58:18 | 23474 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-14
    Description: The study was conducted to assess the socio-economic status of fisherfolks in Yuna Adopted Village Borgu Local Government Area of Niger State. One hundred respondents (65 male and 35 female) were purposively selected from four registered groups in the Village. Frequencies and Percentages were used to arrange, summarize and present the findings of this study. Majority of the male respondents fell within the range of 30-49 years, while female respondents range from 40-49 and 60-69 years. The distribution of respondents based on educational attainment shows that 92.3% male and 100% female had Quranic education. Majority of the respondents (both male and female) lives in mud with thatched roof houses and do not own radio and television. Similarly the highest proportion of male respondents generated mostly income of 〉N111,000 and N6,000 ? N10,000, while female respondents earned between N11,000 ? N30,000 and N6,000 ? N10,000 only. The technologies awareness by respondents include fish farming, V-bottom boat, Solar tent dryer and trammel net, only fish farming was adopted by respondents. The major constraints to Agricultural Production were identified and suggestion was made on how to overcome the constraints.
    Description: Includes:- 6 tables.;11 refs.
    Keywords: Fisheries ; Sociology ; Nigeria ; Yuna ; Fisherfolk ; Fishery Extention Services ; Extension Services ; freshwater environment ; Socioeconomic aspects ; Technology transfer ; Technology ; Fishermen ; Women
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 412-418
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    Toxicity of oil-based drilling mud (OBM) on the survival of the fingerlings of Niger Delta mudskipper, Periophthalmus papilio (Boch and Schneider, 1801) (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24221 | 19325 | 2018-05-19 07:04:22 | 24221 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: The toxicity of oil - based drilling mud on the survival of the fingerlings of Niger Delta mudskipper, Periophthalmus papilio were studied using static plastic tanks. The exposure period lasted for 96 hours. Lethal concentration (LC50) and lethal time (LT50) were determined. The control tanks contained no oil- based drilling mud. Results revealed increased in mortality values of the fish to all lethal concentrations. There was no mortality observed in the control tank. The oil- based drilling mud were toxic on Periopthalmus papilio.
    Description: Includes: 13 references.
    Keywords: Fisheries ; Pollution ; Periophthalmus papilio ; Nigeria ; Rumuche River ; Drilling fluid ; Mortality ; Lethal concentration (LCsub50/sub) ; Bioassay ; freshwater environment ; Toxicity ; Drilling platforms ; Drilling ; Mud ; Fingerlings ; Freshwater fish ; Survival ; Pollution effects ; Mortality ; Lethal effects ; Drilling fluids ; Experimental research ; Toxicity tests
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 275-277
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  • 98
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    Microbiological status of water and fish samples from Jabi Lake, Abuja (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24224 | 19325 | 2018-05-19 07:11:26 | 24224 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Jabi Lake is a natural water body in Abuja Federal Capital Territory (FCT). It was expanded for commercial fishing following relocation of Nigeria's headquarters to Abuja in 1993. Quantitative analysis of microbiological status of water and fish from the Lake was carried out. Samples were collected from the dam site, open water, middle lake and inlet. Result reveal that total coliform count which are indicators of pollution are high (2.0 x 103 cfu/ml, 1.1 x 103 cfu/ml, 1.0 x 103 cfu/ml and 1.1 x 103 cfu/ml for dam site, open water, middle lake, and inlet respectively). Total viable count too is high (9.2 x 103 cfu/ml, 4.9 x 103 cfu/ml, 4.6 x 103 cfu/ml and 4.9 x 103 cfu/ml for dam site, open water, middle lake and inlet respectively). There are no coliform bacteria in the muscle of the fish. High bacterial load is an indication of biological pollution and these calls for restraint on the side of those who are using the lake as site for refuse dump.
    Description: Includes: 10 references.
    Keywords: Fisheries ; Pollution ; Nigeria ; Jabi Lake ; Jabi lake ; Water ; Fish ; Bacteria ; freshwater environment ; Microbiology ; Fish ; Pollution ; Water pollution ; Lake fisheries ; Fishery surveys ; Bacteria ; Baseline studies ; Water sampling ; Microbial contamination ; Muscles ; Freshwater fish ; Pollution surveys ; Water analysis ; Freshwater pollution
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 284-286
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  • 99
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    Assessment of water quality parameters and trace metal contents of drinking water sources in Minna, Niger State (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24615 | 19325 | 2018-05-22 06:05:28 | 24615 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: This study assessed the physico-chemical parameters and heavy metal concentration of tap and borehole water in Minna metropolis. The experiment lasted over a period of three months from May to July 2012. Six (6) locations were identified within Minna metropolis, Bosso, Kpagungu, Chanchaga, Mobil, Maitumbi, and Tunga where water samples were randomly taken once every month. Hydrogen ions concentration, chloride, Sodium and Potassium were determined by the method of American Public Health Association (1995), while temperature was measured with thermometer. Air and Water temperature were determined in situ, while Hyd rogen ions concenration (pH), Ionic conductivity, Alkalinity, Hardness, Chloride, Sodium, Potassium and Heavy Metal concentration, copper, zinc, and Lead were determined in the laboratory. The parameters measured showed marked variation across months and locations. values of physico-chemical and concentration of heavy metals in Tap and Borehole water variables studied showed that parameter measured, fell within the recommended ranges for aquaculture and drinking water. Water temperature showed significant difference (p〈0.05), while conductivity, hardness, alkalinity, sodium and potassium showed no significant difference (p〉0.05) amongst the months. The physico-chemical parameters assessed, indicated that most of the parameters fell within standards set by the Federal Ministry of Environment. Comparison between tap and borehole water of each location in Minna metropolis did not show significant difference in temperatures of the locations (p〉0.05). However, significant difference was observed in conductivity of the various locations (p〈0.05).
    Description: Includes: 12 references.
    Keywords: Health ; Pollution ; Nigeria ; Water quality parameter ; Trace metal ; Minna metropolis ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 192-196
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  • 100
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    Communication strategies / matrix for stakeholders' adaptation to climate change issues in Nigeria (2021)
    FISON | Lagos (Nigeria)
    In:  http://aquaticcommons.org/id/eprint/24664 | 19325 | 2018-05-27 15:01:44 | 24664 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-07-15
    Description: Over the years, man has exploited the ocean and its resources for sustainable livelihood. Man's indigenous and traditional knowledge has been the mainstay and guidance in exploiting the ocean and coastal resources. However, as industrialization and other climate conditions set in to alter or modify the productivity of the ecosystem, there has been a lot of concern by international, regional and local authorities to continuously study the prevalence of these factors and triggers off these climatic changes and their impacts on livelihood of fisherfolks at the industrial or artisanal level of fishing and other fisheries activities like fish farming and fish processing. A quantum of technical and scientific information on the ocean and interactions with other elements have been archived in various libraries, information centers and on the internet. These channels provide information for only those who can access them for policy formulation but cannot actually reach those who will benefit or implement the issues discussed in the policy documents for their livelihood. Meteorological data are reported in technical terms. Figures and other illustrations cannot be utilized by the average artisanal and industrial fishermen for the rational exploitation of the ocean resources. The woman fish processor who uses solar dryer may not be able to relate the weather condition and why her fish cannot dry at the normal time. There are times natural phenomenon like change in the direction of or its intensity can be interpreted by a fisherman as the handwork of his enemy to thwart his fishing effort for that day. Oceans sourge causes and its possible displacement of coastal dwellers might not be fully comprehended by those living in coastal communities. There is the need therefore to develope a communication and outreach strategies using a simple communication matrix for easy articulation of approaches to communicating with all potential and identified stakeholders in Climate change and its effects on stakeholders. This paper therefore discusses some of the climatic conditions and factors that affects the ocean, coastal areas and their productivity. It particularly focuses on communication strategies of information, educating and entertaining in reaching out to identified stakeholders on climate impacts for its rational exploitation and improved income for better standard of living. It finally produced a simple applicable communication matrix for reaching out to all stakeholders in Climale change and its impacts.
    Description: Includes: 10 references.
    Keywords: Pollution ; Fisheries ; Nigeria ; freshwater environment ; automation
    Repository Name: AquaDocs
    Type: conference_item , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 392-397
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