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  • England  (136)
  • Chemistry  (91)
  • General Chemistry
  • Organic Chemistry
  • Freshwater Biological Association  (128)
  • Singapore  (52)
  • National Rivers Authority North West  (28)
  • 1
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    The effect of abstraction on fish and fisheries (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10972 | 1256 | 2013-03-26 13:52:57 | 10972 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-25
    Description: This is the report on the Effect of Abstraction on Fish and Fisheries presented at the 24th IFM Annual Study Course, The Changing Face of Fisheries September 1993 at Cardiff.Water is abstracted from rivers for a wide variety of uses and causing potential for conflicts between abstracters, fisheries and conservation interests, especially during natural low flows. It looks at the potential effects that flow reduction has over various stages of salmonids at various stages of their life history. The flow at the time of smolt migration has been found to be positively correlated with the number of returning adults, and flow is considered to be one of the most important environmental factors inducing salmonids to enter fresh water and ascend rivers. The importance of time series data on fish stocks and angling success together with models which ultimately relate discharge to standing stock are discussed in relation to the setting up of Minimum Acceptable Flows.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; National River Authority ; Water abstractions ; Environmental assessment ; Population dynamics ; Salmonids ; Minimum Acceptable Flows ; Migratory Fish
    Repository Name: AquaDocs
    Type: monograph
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  • 2
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    The Kent estuary 1992 surveys. Summary of results (2021)
    National Rivers Authority North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11099 | 1256 | 2013-04-03 15:27:43 | 11099 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-28
    Description: This is the Kent estuary 1992 surveys: Summary of results produced by the National Rivers Authority in 1993. The report summarises routine and baseline water quality surveys carried out on the Kent estuary during 1992. Baseline surveys are designed to respond to regional, national, and European requirements. During 1992 baseline surveys were carried out in June and December. Unfortunately, in June, samples could only be taken from stations 3, 7 and 8. For ease of interpretation the results have been presented in graph form, including the maximum and minimum parameter concentration and the appropriate Environmental Quality Standards (EQS). The parameters measured in this survey were physical parameters (temperature, BOD, dissolved oxygen, Ph, salinity, conductivity); nutrients (ammonia, phosphate, and nitrate); metals (Mercury, Nickel, Arsenic, Cadmium, Chromium, Cooper, Boron, and Zinc) and organic compounds.
    Description: Environment Agency Archives North West
    Description: + tables, figures and appendices
    Keywords: Ecology ; Limnology ; Management ; England ; Kent estuary ; Arnside ; Estuary ; Coastal waters ; Environmental survey ; Water quality ; Environmental assessment ; Bathing waters ; EQS
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    Type: monograph
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  • 3
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    River Ehen and Calder sub catchment Management Plan (2021)
    National Rivers Authority North West | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10955 | 1256 | 2013-03-26 13:56:21 | 10955 | Environment Agency, UK (Freshwater Biological Association)
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    Publication Date: 2021-06-25
    Description: This is the River Ehen and Calder sub catchment management plan: Consultation Report September 1993 produced by the National Rivers Authority (NRA) North West Region in 1993. The report focuses on the management plan of both River Catchments Ehen and Calder, in North West England, UK. The Catchment Management Plan (C.M.P.) enabled the NRA to summarise the status of the catchment, identify the main issues and present its vision of the future. It provides a strategic policy framework for its Management and influences decision making leading to improvements in the water environment. The report contains sections on Description of Catchment, Catchment uses by NRA function, Target and objectives of the plan, Summary of Issues and Catchment Issues. The section on description of Catchment includes a general description, Transport, Geology, major services, summary of key details, area, topography, administrative details, main towns and population, water quality Sewage Treatment Works Trade effluent discharges, Water Resources, flood defence and land drainage and Fisheries.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Ehen ; Calder ; Inland waters ; Coastal waters ; Rivers ; Freshwater lakes ; Freshwater pollution ; Migratory species ; Fish stocks ; Fisheries ; Nature conservation ; Water management ; Water quality
    Repository Name: AquaDocs
    Type: monograph
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    Format: 58
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  • 4
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    The changes in various iron compounds in culture media for algae. [Translation from: Archiv fur Hydrobiologie Supplemente Band 38(1/2) 151-169, 1970.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4839 | 1256 | 2011-09-29 15:49:48 | 4839 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The purpose of this work is a contribution to the quantitative record of the use of iron by planktonic algae. Preliminary experiments with Chlorella to determine the rate of iron intake in the presence of inorganic sources of iron did not produce the desired result. The crucial point of this work is the investigation of the influence of various external factors on the stability of FeEDTA (FeEDTA = Ferric(III)-compound of ethylene-diamine tetra-acetic acid), since this compound appears to be particularly well-suited as a source of iron for planktonic algae (e.g. TAMIYA et al. 1953). Cultures of Chlorella fusca in a light thermostat were used in experimental research. Methods and results are discussed.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Biometrics ; Biological sampling ; Geographical distribution ; Population density ; Population characteristics ; Population number ; Freshwater crustaceans ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Determination of dissolved oxygen in water with leukoberbelin-blue I. A quick Winkler method. [Translation from: Z.analyt.Chem. 262 97-99, 1972.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4843 | 1256 | 2011-09-29 15:49:28 | 4843 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The reaction of Mn(II) with water-dissolved oxygen, to a higher manganese hydroxide in an alkaline medium, as with the longstanding classic Winkler method, is the first step in the method described here. The assumption for faultless results by the conventional and modified Winkler method is clean water, which contains no organic substances by Mn(III) or Mn(IV). In many cases, however, eg. in river and lake-water tests, it can be seen with the naked eye that after some time the originally brown-coloured precipitate of manganese hydroxide becomes more and more colourless. Oxygen content was analysed in the water samples and evaluated by raising the amount of the leuko-base and giving the corresponding dilution of the colouring matter solution formed still higher oxygen contents can be measured.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Methodology ; Experimental research ; Dissolved oxygen ; Analytical techniques ; Water analysis
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    Type: monograph
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  • 6
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    Nitrogen and phosphorus forms in water and the food requirements of algae. [Translation from: Wiadomosci Ekologiczne 19 238-244, 1973. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4848 | 1256 | 2011-09-29 15:49:18 | 4848 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: When dissolved in water, compounds of nitrogen and phosphorus ought to contain the basic assimilated food requirements for autotrophic plants and therefore autotrophic algae. This article summarises the occurrence of nitrogen in water, how species of algae utilize nitrogen and phosphorus forms for growth and the capacities of algae to adapt to environments of different nutrient wealth. This topic has unquestionable importance not only for the purpose of survival of a species but also in deciding indirectly about the stability of ecosystems.
    Description: Translated from Polish into English
    Keywords: Biology ; Chemistry ; Limnology ; Algae ; Nitrogen fixation ; Nitrogen ; Phosphorus ; Nutritional requirements ; Bacteria ; Organic compounds
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  • 7
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    Physiology of nitrate reduction in Pseudomonas aeruginosa. [Translation from: Z.allg.Mikrobiol. 13, 83-94, 1973.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4856 | 1256 | 2011-09-29 15:48:26 | 4856 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: Pseudomonas aeruginosa has for some time been known as a denitrifier. Pseudomonas aeruginosa was chosen for further studies, because P. aeruginosa occurs abundantly in Plusssee and moreover there are contradictory assertions on the gas products of denitrification by this bacteria. In experimental research the pattern of growth and gas production of Pseudomonas aeruginosa on nutrient broth was studied.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Experimental research ; Bacteria ; Freshwater lakes ; Growth ; Microbiological culture ; Plusssee
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  • 8
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    Relationship of dimensions and weight in freshwater planktonic crustaceans. [Translation from: Doklady Akademii Nauk SSSR 84(1) 153-156, 1952. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4857 | 1256 | 2011-09-29 15:48:28 | 4857 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: There is no doubt that determination of the biomass of zooplankton (primarily of crustaceans) will be taken into consideration in practice and limnological works, especially after the recent publication of fairly comprehensive tables of weights of a whole range of species of freshwater copepods and cladocerans. The usefulness of applying formulae of determining the biomass of marine crustaceans for freshwater copepods is discussed.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Biomass ; Formulae
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  • 9
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    For the determination of iron (II) and total iron with 2,2'-dipyridyl in mineral waters. Reduction of iron (III) with ascorbic acid [Translation from: Zeitschrift fur Analytische Chemie 209 340-341, 1965] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4877 | 1256 | 2011-09-29 15:47:02 | 4877 | Freshwater Biological Association
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    Publication Date: 2021-07-06
    Description: The determination of bi- and trivalent iron in proximity, in mineral waters has gained in significance, on biological and technical grounds. This short paper describes the procedure of the determination of bivalent iron and total iron in a water sample.
    Description: Translated from German into English
    Keywords: Chemistry ; Limnology ; Iron ; Acids ; Analytical techniques ; Minerals ; Water analysis
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    Type: monograph
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  • 10
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    Nitrification in marine ecosystems [Translation from: Rapp.Naturvardsverket SNVPM No.1213, 157-166, 1980] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4964 | 1256 | 2011-09-29 15:39:04 | 4964 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: The nitrification in the ocean is influenced by several environmental factors and the importance of these is more or less known. There are very likely many more to be discovered in the study of the interaction of nitrification bacteria and other micro-organisms in the ocean. Some of the factors to be considered will briefly be dealt with in this paper. Then the authors give the results of an incubation experiment in the Baltic Sea and from a detailed study in Gullmarn.
    Description: Translated from Swedish into English
    Keywords: Chemistry ; Ecology ; Oceanography ; Marine ecology ; Nitrification ; Experimental research ; Sediment analysis ; Bacteria ; Carbon fixation ; Nitrosococcus oceanus ; Nitrococcus mobilis
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  • 11
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    Ratio of natural isotopes of nitrogen. I. Primary results: soils of Dombes [Translation from: Revue d'Ecologie et de Biologie du Sol 14, 279-287, 1977] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4967 | 1256 | 2011-09-29 15:36:52 | 4967 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle. In this work, the authors report the results of calculations of natural isotope ratios of nitrogen in samples of water, soil and vegetation prevailing in Dombes and discuss the possibilities of errors and coefficients of fractionation.
    Description: Translated from French into English
    Keywords: Chemistry ; Ecology ; Limnology ; Nitrogen isotopes ; Soils ; Tracers ; Bacteria ; Nitrogen compounds ; France ; Dombes
    Repository Name: AquaDocs
    Type: monograph
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  • 12
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    Experiments on the production of a highly dispersible calcium carbonate. ('Experimental section' only) [Translation from: Szklo i Ceramiki 30, 133-136, 1979] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4963 | 1256 | 2011-09-29 15:39:01 | 4963 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: This short translation summarises experiments on the production of a highly dispersible precipitate of calcium carbonate. The translation covers the 'Experimental section' (of the original larger paper) only.
    Description: Translated from Polish into English
    Keywords: Chemistry ; Limnology ; Experimental research ; Calcium carbonates ; Magnetic fields ; Ultrasonic devices
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  • 13
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    Chemical composition of Iraq water resources (abbreviated translation) [Translation from: Vodnye Resursy 1975(4,) 173-185] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4988 | 1256 | 2011-09-29 15:36:31 | 4988 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: This abbreviated translation summarises the chemical composition of Iraq water resources. Among the described water bodies are the River Euphrates, Shatt al Arab River and a number of standing waters.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Inland water environment ; Inland waters ; Water analysis ; Iraq
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  • 14
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    Mechanism of mass transfer in the formation of hydrothermal deposits of sulphides [Translation from: Trudy Inst.Geol.rudn.Mesterozh. 16, 80 [pages 44-46 ”Solubility of sulphides of iron” only], 1958] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4980 | 1256 | 2011-09-29 15:38:06 | 4980 | Freshwater Biological Association
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    Publication Date: 2021-07-07
    Description: This partial translation of the original paper provides the summary of this study of the mechanism of mass transfer in the formation of hydrothermal deposits of sulphides. For determining the solubility of sulphides of iron, the radioactive isotope Fe59 was used. The solubility of two sulphides was determined.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Sulphide deposits ; Sulphides ; Hydrothermal deposits ; Iron isotopes ; Solubility
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  • 15
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    Some data on the content of organic carbon in rivers in the winter months. [Translation from: Gidrochim. Mat. 23, 36-38, 1955] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5054 | 1256 | 2011-09-29 15:29:08 | 5054 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: Observations are reported on the content of organic matter in the Moscow region in 1941. Some data is given on alkalinity, oxygen content and colourisation of the rivers.
    Description: Translated from Russian into English
    Keywords: Biology ; Chemistry ; Limnology ; Rivers ; Organic matter ; Alkalinity ; Dissolved oxygen ; Colour
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  • 16
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    Water temperature studies on the R. North Tyne after impoundment by Kielder dam. 3. Preliminary examination of water temperature data (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5102 | 1256 | 2011-09-29 15:24:35 | 5102 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: The report describes the results of preliminary analyses of data obtained from a series of water temperature loggers sited at various distances (0.8 to 21.8 km) downstream of Kielder dam on the River North Tyne and in two natural tributaries. The report deals with three aspects of the water temperature records: An analysis of an operational aspect of the data sets for selected stations, a simple examination of the effects of impoundment upon water temperature at or close to the point of release, relative to natural river temperatures, and an examination of rate of change of monthly means of daily mean, maximum, minimum and range (maximum - minimum) with distance downstream of the point of release during 1983.
    Keywords: Ecology ; Limnology ; Water temperature ; Water temperature data ; Calibration ; Monitoring systems ; Data loggers ; England ; Kielder Waters
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    Type: monograph
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  • 17
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    Aspects of the washout of salmonid eggs. 2. Effects of drifting on development and survival of eggs of brown trout (Salmo trutta L.) (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5096 | 1256 | 2011-09-29 15:24:47 | 5096 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: At high stream discharges salmonid eggs can he displaced from the gravel and may drift downstream. It has been suggested that developing salmonid eggs may be killed by ”physical shock”, especially during the period before ”eyeing”. Similarly, a progress report by the International Pacific Salmon Fisheries Commission (1966) states that salmonid eggs are most sensitive during the period between fertilisation and blastopore closure. However, it would seem unlikely that this sensitivity actually begins at the time of fertilisation because, in nature, a period, perhaps measured in hours, must occur during which the newly-fertilised eggs are exposed to physical shock during the deposition of gravel over them as a result of the cutting activity of the female fish. The present report describes simple channel experiments designed to answer the two questions: 1. After release of eggs from the gravel, does the process of drifting downstream, which implies some physical shock through movement and impact, decrease the survival of salmonid eggs? 2. Is the survival rate-influenced by the stage of development of the eggs?
    Keywords: Ecology ; Fisheries ; Limnology ; Freshwater ecology ; Rivers ; Freshwater fish ; Life cycle ; Channels ; Experimental research ; Fish eggs ; England ; Grassholme
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  • 18
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    Calibration of Grassholme Channels, 1982 (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5101 | 1256 | 2011-09-29 15:24:37 | 5101 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: Adjustment of experimental channels to give any specified pattern of water depth or velocity is complex and tedious because it involves a number of variables. Since some variables are not controllable and variables may interact, valve settings of the Grassholme channels were initially determined on an ad hoc basis to suit individual experiments. This method was used during 1982 but additional observations were made in order to gain more detailed understanding of the channel system and, as far as possible, to develop a guide to future short-cuts in attaining suitable channel settings for any given purpose. This report describes calibration of the Grassholme channels (using water of the Grassholme Reservoir) for the biological experiments of spring - summer 1982. The main variables that are discussed are valve turns and discharge and velocity and depth. It also seeks to establish relationships which will be of value in future managment of the channels for experimental purposes.
    Keywords: Biology ; Ecology ; Limnology ; Channels ; Experimental data ; Water management ; Calibration ; Testing ; Depth ; England ; Grassholme
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  • 19
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    A survey of aquatic invertebrates of the Somerset Levels, August 13-14, 1981 (2021)
    Freshwater Biological Association | East Stoke, UK
    In:  http://aquaticcommons.org/id/eprint/5098 | 1256 | 2011-09-29 15:24:41 | 5098 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: Since 1975 the wildlife interest of the Somerset Levels and Moors have been assessed. Detailed information has been obtained on the conservation interest of meadows, breeding and wintering bird populations and the botany of aquatic habitats (rhynes). Little work to date has been carried out on the terrestrial and aquatic invertebrate fauna. The prime aim of this survey was to sample a wide variety of rhynes in order to obtain information on the nature and distribution of aquatic invertebrates.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater ecology ; Invertebrate larvae ; Canals ; Limnological surveys ; Aquatic insects ; England ; Somerset
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  • 20
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    Composition and bulk properties of Dorset river gravels (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5103 | 1256 | 2011-09-29 15:24:32 | 5103 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: Considerable interest has been expressed in the composition of the stream gravels, the movement of bed materials and the relationship of sediment composition, packing and siltation of void space to invertebrate ecology. In the autumn of 1982, freeze-samples of gravel were obtained in Dorset streams. Data were required on the depth of salmonid egg pocke and were part of a broader investigation of regional variation in the independent variables of salmonid fish length, gravel size, current velocity and the resultant dependent variable ~egg burial depth. The Dorset river gravels examined are bimodal. The grain size distribution may be resolved into two near-normal frequency distributions interpreted as representing a primary framework or lattice of gravel particles into which a secondary matrix population of sand particles has penetrated.
    Keywords: Ecology ; Limnology ; Rivers ; Grain flow ; Granulometry ; Detritus ; England ; Dorset
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  • 21
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    Scour and fill in cobble-bedded streams (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5100 | 1256 | 2011-09-29 15:24:39 | 5100 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: Scour and deposition have been measured in two small cobble-bedded upland streams, for two years. Grids of scour chains were inserted in the bed and relocated after the passage of individual hydrographs. Scour, fill and the area of the bed affected by these processes were recorded. The relationship between mean scour or fill and maximum scour or fill is assessed. In addition, the relationship between the depth of scour and the sediment transport rate as bedload is discussed briefly.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater ecology ; Limnological surveys ; Sedimentation ; Scour and fill ; England ; Teesdale
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  • 22
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    Advisory report on nutrient levels and related ecology of Malham Tarn (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5092 | 1256 | 2011-09-29 15:25:26 | 5092 | Freshwater Biological Association
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    Publication Date: 2021-07-08
    Description: Aspects of reported nutrient levels and their ecological implications for Malham Tarn are discussed. Discussion centres upon the data given here as appendices, involving possible evidence of a long-term increase in the concentrations of some nutrients (especially nitrate) of significance for the Tarn's ecology and conservation. Further comparative tests of some methods of chemical analysis employed in obtaining those data are reported.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater ecology ; Freshwater lakes ; Nutrients (mineral) ; Nitrates ; Phosphorus ; Alkalinity ; Methodology ; Ultraviolet radiation ; Hydrology ; England ; Malham Tarn
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  • 23
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    Aspects of the washout of salmonid eggs. 3. Observations on the settlement of artifical eggs in a section of natural stream channel at several different discharges (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5097 | 1256 | 2011-09-29 15:24:43 | 5097 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: It is of value to know the approximate distance of travel at different stream discharges and/or water velocities, of salmonid eggs which have been displaced from redds by spates. This report describes studies in 20 m of stream channel upstream of the fish trap in Dubby Sike. Observations were made on the relation- ships between discharge and water depth and velocity and also on the relationships between water velocity and the settlement of artificial trout eggs. The main aim was to test the hypothesis that, at any given water velocity, eggs would drift smaller distances in a natural stream than in the experimental channels.
    Keywords: Ecology ; Fisheries ; Limnology ; Freshwater ecology ; Rivers ; Freshwater fish ; Channels ; Experimental research ; Fish eggs ; England ; Grassholme
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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    Infiltration of fine and coarse sand into an open-work gravel bed (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5105 | 1256 | 2011-09-29 15:23:25 | 5105 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The siltation of an experimental gravel bed, with three grades of sand moving in suspension and as bedload, was examined. The rate of infiltration of sand into the void space of the gravel was determined under differing conditions of discharge, water depth, and velocity (jointly expressed as variation in the Froude Number) and suspended sediment concentration. The downstream reduction in siltation from the point source was also examined.
    Keywords: Ecology ; Limnology ; Experimental data ; Gravel ; River beds ; Resuspended sediments ; Silting ; Velocity ; England ; Teesdale
    Repository Name: AquaDocs
    Type: monograph
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    Turbidity and the suspended sediment load of the regulated River Tees (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5104 | 1256 | 2011-09-29 15:23:57 | 5104 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The physical effects of river regulation in the U.K. by impoundments have attracted most attention from hydrologists and engineers concerned with predicting and maintaining discharge regimes for water supply. Grimshaw & Lewin (1980) suggested two basic methods to investigate the effects of regulation on suspended sediment discharge: (i) Compare the river load before and after reservoir construction, and (ii) adopt a paired catchment approach. The former method assumes stationarity of process in the natural system. The latter method, involving selecting two adjacent catchments of similar physical attributes, one regulated and one unregulated, assumes constancy of process spatially. In this report both approaches are adopted to examine the turbidity and suspended sediment concentration regime of the regulated River Tees. Neither approach was entirely satisfactory in the present case. This report examines the discharge and turbidity record consisting of approximately 4000 paired data points, representative of an 11-year post-impoundment period, that has been examined for the River Tees at Broken Scar, Darlington. A small amount of suspended sediment concentration data was also processed: these data are representative of both the pre-impoundment and post-impoundment sediment regime.
    Keywords: Ecology ; Limnology ; Rivers ; Grain flow ; Granulometry ; Detritus ; England ; Dorset
    Repository Name: AquaDocs
    Type: monograph
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    Progress on the salmon investigation (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5110 | 3949 | 2011-09-29 15:23:55 | 5110 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An article detailing some of the conclusions of the salmon investigation undertaken by the author, on the River Eden and its tributaries, for the previous few years. It is proposed that seasonal changes in young salmon growth are related to water temperature variation. A figure is included showing length of fish compared to the average temperature of water in the River Eden over a two year duration. The article describes comparative work undertaken to date between three streams within the Thurso watershed and the River Eden. A table is included showing the average size of fish in each of the watercourses compared. Laboratory experiments on the effects of temperature on young salmon are outlined, as well as investigative work undertaken into the realtionship between fish scales and fish length.
    Keywords: Biology ; Ecology ; Fisheries ; Water temperature ; Freshwater fish ; Length ; Scales ; Seasonal variations ; Feeding ; Temperature effects ; Annual reports ; Salmo salar ; England ; Scotland
    Repository Name: AquaDocs
    Type: book_section , FALSE
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    Format: application/pdf
    Format: 51-55
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    Invertebrate animals of the Lake District (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5109 | 3949 | 2011-09-29 15:23:53 | 5109 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Keywords: Biology ; Ecology ; Limnology ; Freshwater molluscs ; Aquatic insects ; Invertebrate larvae ; Aquatic organisms ; Annual reports ; Corixidae ; Coleoptera ; England ; Lake District
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 47-51
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    Information science and the scientist. A look at information requirements and the technologies available to scientists in the pursuit of information (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5124 | 3949 | 2011-09-29 15:23:13 | 5124 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: A review article looking at the type of information requirements commonly shared by scientists and their use of traditional information services. Areas covered include primary requirements of IFE (Institute of Freshwater Ecology) staff, pure versus applied research, informal and personal sources of information, and traditional library and information services. It goes on to describe how research into information systems and technology may improve the wider accessibility and use of information to the scientific community. Technologies covered include online databases, telecommunications, gateways, expert systems, optical technology and applications of CDROM.
    Keywords: Ecology ; Environment ; Information Management ; Freshwater ecology ; Research institutions ; Research ; Information scientists ; Information services ; Annual reports ; England ; Lake District
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 55-67
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    Strategic ecosystem studies of large slow flowing lowland rivers. Progress report: April - October 1989 (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5237 | 1256 | 2011-09-29 15:13:37 | 5237 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: This report covers the period April to September, 1989. During this period sampling of invertebrates has concentrated on planktonic animals and those associated with one of the dominant macrophytes in the system, Nuphar lutea, the yellow water lily, since these are particularly important in the diets of larval and juvenile cyprinid fish. A proportion of samples has been partly analysed and some preliminary data are presented here.
    Keywords: Ecology ; Environment ; Limnology ; Aquatic plants ; Plankton ; Biological sampling ; Invertebrate larvae ; Pesticides ; England ; Godmanchester
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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    Final report on the updating service on environmental chemicals in freshwater for the period 9.1.89 to 9.7.89 (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5238 | 1256 | 2011-09-29 15:13:42 | 5238 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: This report presents five batches of data which have been despatched to the Joint Research Centre, Ispra. The data as been allocated to various ECDIN (Environmental Chemicals Data and Information Network) files. The data comprises environmental chemicals in the freshwater environment, taking in paricular consideration: aquatic toxicity, bioaccumulation, metabolism and elimination biodegradation.
    Keywords: Chemistry ; Ecology ; Limnology ; Data ; Data processing ; Data collections ; Chemical compounds ; Toxicity ; Bioaccumulation ; Biodegradation ; Metabolism
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 8
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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
    Details
    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
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 19
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    Investigations on phytoplankton with special reference to water usage (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5281 | 1256 | 2011-09-29 15:11:31 | 5281 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Experiments and observations on the phytoplankton of certain lakes in the English Lake District were made from early 1973 to the end of March, 1974. They included laboratory and lake bioassays and observations on the quantity and quality of the phytoplankton in six lakes. The introductory sections of the report are about algae, the ecology of phytoplankton and the scope of the contracted work. Laboratory bioassays on water from one lake, Blelham Tarn, showed that phosphorus, silicon (for diatoms) and organic substances forming complexes with iron were the major substances limiting the growth of the algae tested. The growth of the test algae was limited to different degrees by those substances and, to some extent, to a greater or lesser degree at different times of year. It is suggested that a relatively simple form of bioassay could give valuable information to water undertakings. Lake bioassays and other experiments were carried out by using large in situ tubular plastic enclosures. Two such investigations are described. The effects of a change in sewerage in two drainage basins on the phytoplankton of three lakes is described and some data given about changes since 1945 in three other lakes in the same overall drainage basin. These latter lakes have been affected too by changes in sewerage and by increasing inputs of domestic and agricultural wastes. Throughout, the relevance of the work done to practical problems of water usage is kept in mind and discussed. In the last section special reference is made to the largely unpredictable results of water transfers. The report ends with a note on river phytoplankton.
    Keywords: Biology ; Limnology ; Management ; Phytoplankton ; Water use ; Water supply ; Freshwater lakes ; Bioassays ; Tests ; Controlled conditions ; Thermal stratification ; Tubing ; Nutrients (mineral) ; Diatoms ; England ; English Lake District
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 64
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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
    Details
    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
    Repository Name: AquaDocs
    Type: book_section , FALSE
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    Format: application/pdf
    Format: 119-131
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    The food of coarse fish (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5344 | 1256 | 2011-09-29 15:02:55 | 5344 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: Remarkably little has been published on the feeding habits of the non-salmonid fishes of British fresh waters. The following report briefly summarizes the results obtained from the examination of the stomach contents of some 2,700 fish, belonging to 19 species, which were obtained during 1939. The results of all examinations of gut contents were analysed, species by species, upon a simple basis of the presence of different types of food. Foodstuffs were divided up into six main categories— fish, molluscs, insects, crustaceans, higher plants together with filamentous algae, and diatoms—and the occurrence of members of any of these categories was recorded for each fish.
    Keywords: Biology ; Fisheries ; Limnology ; Coarse fish ; Feeding ; Feeding behaviour ; Fishery surveys ; Food organisms ; Gutting ; England
    Repository Name: AquaDocs
    Type: book , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 315-322
    Format: 33
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    Using RIVPACS for studies on conservation and biodiversity (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5343 | 1256 | 2011-09-29 15:02:34 | 5343 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-10
    Description: Invertebrate conservation relies not only on public support and political will, but also on possessing an adequate understanding of the distribution and ecology of invertebrate species and communities. In the UK, RIVPACS is making an important contribution to assessing the conservation importance of river invertebrate assemblages. So far, work has largely centred on using RIVPACS as an integral part of SERCON (System for Evaluating Rivers for Conservation), in which data collected using the standard RIVPACS method are interpreted with reference to conservation criteria such as species richness and representativeness. Applications of RIVPACS to other areas of conservation - whether providing information on the ecological requirements of rare species, monitoring the success of river restoration projects, or making broader assessments of sustainability - are probably more limited, but merit further examination. It is important to develop closer links between RIVPACS and techniques such as SERCON and RHS (River Habitat Survey) in order to maximise the benefit each can bring tostudies on conservation and biodiversity. It should also be recognised that there are limitations in transferring such systems to other countries where approaches to nature conservation may be very different.
    Keywords: Conservation ; Environment ; Limnology ; Classification systems ; Invertebrate larvae ; Rivers ; Computer programs ; Nature conservation ; Biodiversity ; Sustainability ; England
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 315-322
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    Central area fisheries annual report 1994 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8509 | 1256 | 2012-12-21 15:37:01 | 8509 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The purpose of this report is to record key events/data and to outline the activities of the NRA Central Area Fisheries Function during 1994. The Rivers looked at include the Ribble, Lune, Hodder and Wyre. The issues that the report looks at includes Hydrological and meterological data, catch data for salmon and sea trout, fish kills, and fish stocking. It also lists the Micro-tag returns for 1994 and the six key objectives that the Central Area Fisheries Function has set itself for 1995. The report uses a range of different graphs and tables to display their data.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Rivers ; River fisheries ; Coarse fish ; Salmo salar ; Salmo trutta ; Stream flow ; Catch statistics ; Stock assessment ; Fish counters ; licensing
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 49
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    Regional survey of pesticide residues in fish and fish products: Philippines (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26301 | 23782 | 2019-03-27 05:53:49 | 26301 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Chemistry ; Fisheries ; Philippines ; Pesticides ; Cultured organisms ; Biological sampling ; Fish ; Fishery products ; Quality assurance ; Biochemical analysis ; Lethal limits
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 84-89
    Format: 6
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    Transfer of technology in chemical contaminants testing in the region through setting up of methodologies and human resource training (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26289 | 23782 | 2019-03-13 01:57:17 | 26289 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Chemistry ; Education ; Technology transfer ; Chemical pollution ; Training ; Curricula
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 3-4
    Format: 2
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    Analysis of oils: Extraction of lipids (modified Folch's Method) (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26829 | 23782 | 2019-11-19 01:08:33 | 26829 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in lipid extraction from fish using the Modified Folch's Method. Instructions on sample preparation, and the apparatus and reagents needed are presented. Detailed procedures in lipid extraction are provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications ; Lipids
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-2.1-C-2.2
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    Analysis of oils: Determination of free fatty acid (FFA) (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26832 | 23782 | 2019-11-19 00:56:39 | 26832 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in determination of free fatty acids (FFA) in fish.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fatty acids
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-5.3
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    Analysis of oils: Preparation of methyl esters by Boron Trifluoride Method (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26838 | 23782 | 2019-11-19 00:36:53 | 26838 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in the preparation of methyl esters by boron trifluoride method in fish. Instructions on sample preparation and the apparatus and reagents needed are presented. Detailed procedures are also provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fish oils ; Fats ; Fatty acids ; Esters ; Lipids
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-11.1-C-11.2
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    Analysis of oils: Determination of thiobarbituric acid (TBA) number (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26835 | 23782 | 2019-11-19 00:46:29 | 26835 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in the determination of thiobarbituric acid (TBA) number in fish fat. The apparatus and reagents needed are presented. Detailed procedures and calculations are also presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fish oils ; Fats ; Fatty acids
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-8.1-C-8.3
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    Analysis of oils: Determination of the degree of lipid oxidation by gas chromatography (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26837 | 23782 | 2019-11-19 00:39:35 | 26837 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in the determination of the degree of lipid oxidation by gas chromatography. Instructions on sample preparation and the detailed procedures and calculation are provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Lipids ; Fats ; Fatty acids ; Oxidation ; Chromatographic techniques
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: C-10.1
    Format: 1
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    Analysis of additives: Determination of monosodium L-glutamate (MSG) content in fish jelly products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26840 | 23782 | 2019-11-15 07:59:29 | 26840 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in lipid determination of monosodium L-glutamate (MSG) content in fish jelly products. Instructions on sample preparation and the reagents needed are presented. Detailed procedures calculation are also provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Food
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: D-2.1-D-2.3
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    Analysis of additives: Determination of sugar (sucrose) by Somogyi's Method (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26841 | 23782 | 2019-11-15 07:56:22 | 26841 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology in the determination of sugar (sucrose) in fish product by Somogyi's method. Instructions for sample preparation and the reagents needed are presented. Detailed procedures in the determination of the sugar in a sample are provided.
    Keywords: Chemistry ; Fisheries ; Fishery industry ; Food technology ; Standards ; Specifications ; Saccharides ; Products
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: D-3.1-D-3.4
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    Microbiological procedure: Aerobic plate count (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26846 | 23782 | 2019-11-15 07:46:46 | 26846 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The aerobic plate count provides an estimate of the number of viable microorganisms in the food according to the medium used and the time and temperature incubation. Presented in the paper is the aerobic plate count procedure using the spread plate method. The culture media, apparatus, sample preparation, and the detailed procedures and the calculation of aerobic plate count are also provided in the paper.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: E-2.1-E-2.3
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    Microbiological procedure: Handling of food samples (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26845 | 23782 | 2019-11-15 07:48:51 | 26845 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Proper handling of samples is presented in the paper. Specifically, the procedures in the proper collection, transport, and storage of samples are presented. Moreover, the procedures of monitoring of the condition of samples in a container, and thawing of frozen samples are also provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Fish handling ; Samples ; Sample contamination ; Sample storage
    Repository Name: AquaDocs
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    Analysis of additives: Semi-quantitative analysis of boric acid and borates in meat and meat products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26844 | 23782 | 2019-11-15 07:51:20 | 26844 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Boric acid and borates were commonly used as preservatives. It acts as an antimicrobial agent; however it is not permitted in the fishery products. The paper provides the methodology in the determination of boric acid and borates in fishery products. Instruction for sample preparation and the reagents needed are presented. Detailed procedures in the determination of boric acid and borates in a sample are provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Borate minerals
    Repository Name: AquaDocs
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    Microbiological procedure: Staphylococcus aureus (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26849 | 23782 | 2019-11-15 07:41:06 | 26849 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Staphylococcus aureus is a common organism on the skin and in the nasal passages of approximately 50% of the population. Heat-treated seafood may become contaminated with this organism by poor handling, then storage at improper temperatures allows the organism to multiply and produce its toxin. This type of food poisoning may be avoided by practicing strict personal hygiene, thorough cleaning and disinfection of equipment, and storage of susceptible food at temperatures below 10°C or above 60°C. Presented in the paper is the methodology of determining S. aureus in fish and fishery products.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Pathogenic bacteria ; Pathogens ; Health and safety ; Public health ; Microbial contamination ; Staphylococcus aureus
    Repository Name: AquaDocs
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    Microbiological procedure: Coliforms and Escherichia coli (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26848 | 23782 | 2019-11-15 07:45:03 | 26848 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Coliforms are Gram-negative, non-sporing, facultatively anaerobic rods which ferment lactose, producing acid and gas within 48 hrs and they belong to the family Enterobacteriaceae. Presented in the paper is the methodology of examining the presence of coliforms and E. coli for fish and fishery products.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Microbial contamination ; Microbiology ; Pathogens ; Escherichia coli
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    Microbiological procedure: Faecal streptococci (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26850 | 23782 | 2019-11-15 07:39:11 | 26850 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Streptococci are gram-positive cocci, sometimes coccobacilli, arranged in chains. This group of streptococci resides in the intestine of warm-blooded animals. They are bile resistant and capable of growth at 45°C. Fecal streptococci form part of the microflora of many foods without necessarily indicating poor hygiene. They are found in many fermented foods, such as cheese and raw sausage, and often take part in the fermentation process. However, in meat products which have received a severe heat process, the presence of excess numbers of fecal streptococci indicates unhygienic handling and/or faulty storage. Presented in the paper is the methodology of determining the presence of fecal streptococci in fish and fishery products.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Pathogenic bacteria ; Pathogens ; Health and safety ; Public health ; Microbial contamination
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    Microbiological procedure: Salmonellae & Shigella (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26847 | 23782 | 2019-11-15 07:43:06 | 26847 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Salmonella is a gram-negative bacterium of the family Enterobacteriaceae. Salmonella lives in animal and human intestines and is shed through feces, which usually infects humans through contaminated water or food. The paper presents the methodology of determining the presence of Salmonella and Shigella in fish and fishery products.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Aerobic bacteria ; Microbiological analysis ; Microorganisms ; Pathogenic bacteria ; Pathogens ; Health and safety ; Public health ; Microbial contamination ; Salmonella
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    Cryoprotective effects of chemicals on proteins of fish muscle (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26865 | 23782 | 2019-11-05 03:25:17 | 26865 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: A review is made of studies conducted on cryoprotectants for use in the frozen storage of processed fishery products, such as surimi. Some 150 compounds were screened for cryoprotective effects on fish actomyosin; the findings of experiments investigating the behaviour of carp actomyosin, and fish myosin, actin and other constituent proteins during frozen storage are described. The mechanism of freeze denaturation and of the effects of cryoprotectants is outlined and the application of cryoprotectants in the development of new fish gel products considered.
    Keywords: Chemistry ; Fisheries ; Food technology ; Product development ; Freezing storage
    Repository Name: AquaDocs
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    Format: 64-67
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    Regional survey of pesticide residues in fish and fish products: Singapore (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26302 | 23782 | 2019-03-27 05:50:18 | 26302 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Chemistry ; Fisheries ; Singapore ; Pesticides ; Biological sampling ; Fish ; Dried products ; Biochemical analysis ; Lethal limits
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 90-99
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    Determination of ash (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26801 | 23782 | 2019-10-22 05:10:19 | 26801 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in the determination of ash in meat. Specifically, the procedures in the sample preparation, instrument and apparatus required, and the analytical procedures and calculation for each method are presented.
    Keywords: Chemistry ; Fisheries ; Ashes ; Ash content ; Heating ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Standards ; Specifications
    Repository Name: AquaDocs
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    Laboratory manual on analytical methods and procedures for fish and fish products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26799 | 23782 | 2019-11-12 05:20:14 | 26799 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The manual provides useful guides for laboratory workers and technical personnel. The procedures for determining the physical and chemical properties of fish meat, the analysis of oils and some additives and microbiological procedures are also included.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Fishery products ; Processed fishery products ; Fish inspection ; Fishery industry ; Food additives ; Food technology ; Standards ; Specifications
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    Analysis of additives: Detection of polyphosphates (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26839 | 23782 | 2019-11-15 08:02:24 | 26839 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Polyphosphates are commonly used in the production of fish jelly products. The paper provides the methodology in the detection of polyphosphates in fish products. Instructions on the preparation of sample solution and the apparatus and reagents needed are presented. Detailed procedures in the chromatographic separation of polyphosphates are also provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Additives ; Food additives ; Phosphates
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    Regional survey of pesticide residues in fish and fish products: Cambodia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26297 | 23782 | 2019-03-27 06:01:19 | 26297 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Chemistry ; Cambodia ; Pesticides ; Cultured organisms ; Biological sampling ; Fish ; Fishery products ; Biochemical analysis ; Lethal limits
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 67-70
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    Regional survey of chloramphenicol, nitrofuran, malachite green and leuco-malachite green in fish and fish products: Indonesia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26313 | 23782 | 2019-03-27 06:17:20 | 26313 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Chemistry ; Indonesia ; Drugs ; Biological sampling ; Biochemical analysis ; Cultured organisms ; Lethal limits ; Quality control ; Penaeus monodon ; Penaeus vannamei
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 149-155
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    Regional survey of pesticide residues in fish and fish products: Vietnam (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26304 | 23782 | 2019-03-27 03:53:19 | 26304 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Aquaculture ; Chemistry ; Fisheries ; Viet Nam ; Pesticides ; Cultured organisms ; Biological sampling ; Fish ; Fishery products ; Lethal limits
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 106-109
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    Regional survey of chloramphenicol, nitrofuran, malachite green and leuco-malachite green in fish and fish products: Malaysia (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26314 | 23782 | 2019-03-27 06:26:14 | 26314 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Keywords: Chemistry ; Fisheries ; Malaysia ; Drugs ; Biological sampling ; Biochemical analysis ; Quality control ; Lethal limits ; Penaeus monodon
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 156-159
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    Determination of physical properties of meat: Measurement of free and expressible drips (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26803 | 23782 | 2019-11-12 05:32:47 | 26803 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in the measurement of free and expressible drips. Specifically, the required apparatus, and the analytical procedures and calculations for free and expressible drips are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Microbiological analysis ; Fishery products ; Processed fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
    Repository Name: AquaDocs
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    Determination of physical properties of meat: Fish protein extractibility & its determination (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26804 | 23782 | 2019-11-12 05:37:03 | 26804 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure fish protein extractability and its determination. Specifically, the procedures in sampling and sample preparation, apparatus and reagents required, the protein extractability procedures and calculations for each method are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fishery industry ; Food technology ; Standards ; Proteins ; Fish
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    Determination of physical properties of meat: Viscosity of fish meat sol (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26805 | 23782 | 2019-11-12 05:40:26 | 26805 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure to a rapid method to assess the gel-forming ability of the fish meat, fish mince, leached meat, and surimi, etc. Specifically, the procedures in the sampling and sample preparation, the apparatus and reagents required, and the analytical procedures and calculations are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Processed fishery products ; Fishery industry ; Food technology ; Standards ; Specifications ; Viscosity ; Minced products
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    Determination of physical properties of meat: Quality assessment of fish jelly products and raw material used for production of fish jelly products (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26806 | 23782 | 2019-11-12 05:55:49 | 26806 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure for the quality assessment of fish jelly products and the raw materials for the production thereof. Specifically, the materials and instruments or apparatus required, the sample and test piece preparation, and measurement, measurement, and assessment for each method are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Processed fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications ; Gels
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    Protein determination by Kjeldahl method (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26807 | 23782 | 2019-10-22 03:31:39 | 26807 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in protein determination using Kjeldhl method in fish meat. Specifically, the apparatus and the reagents needed and the analytical procedures and calculation are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
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    Determination of chemical properties of meat: Protein determination by Biuret method (Modified by Umemoto) (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26821 | 23782 | 2019-11-21 01:08:37 | 26821 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in protein determination using Biuret method (modified by Umemoto) in fish meat. Specifically, the apparatus and the reagents needed and the analytical procedures and calculations are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
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    Determination of chemical properties of meat: Determination of DMA-N by Dyer's colorimetric method using copper dithiocarbamate (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26822 | 23782 | 2019-11-21 01:02:52 | 26822 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in the determination of DMA-N by Dyer's colometric method using copper dithiocarbamate in fish meat. Specifically, the reagents needed and the analytical procedures in the determination of DMA are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
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    Determination of chemical properties of meat: Determination of trimethylamine oxide (TMAO-N), trimethylamine (TMA-N), total volatile basic nitrogen (TVB-N) by Conway's method (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26823 | 23782 | 2019-11-21 01:05:56 | 26823 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the determination of trimethylamine oxide (TMAO-N), trimethylamine (TMA-N), and total volatile basic nitrogen (TVB-N) by Conway's method in fish meat. Specifically, the apparatus and the reagents needed and the analytical procedures and calculations for each method are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
    Repository Name: AquaDocs
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    Determination of chemical properties of meat: Determination of formaldehyde in fish meat using Nash's reagent (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26824 | 23782 | 2019-11-21 01:00:15 | 26824 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: Presented in the paper is the standard procedure in the determination of formaldehyde in fish meat using Nash's reagent. Specifically, the reagents and the apparatus and instruments needed in the analysis are presented. Furthermore, analytical procedures and calculations are presented.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Fishery products ; Fish inspection ; Fishery industry ; Food technology ; Standards ; Specifications
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    Analysis of oils: Determination of methyl esters of fatty acids by gas chromatographic method (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26836 | 23782 | 2019-11-19 00:43:28 | 26836 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper provides the methodology of the determination of methyl esters of fatty acids by gas chromatographic method. Methyl esters of fatty acids from fish and animal fats having 8-24 carbon atoms are separated and determined by gas chromatography. The apparatus, reagents and operating conditions are presented. Detailed procedures of the analysis of the sample are also provided.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Food technology ; Standards ; Specifications ; Fish oils ; Fatty acids ; Fats
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    Analysis of oils: Significance of analysis of lipids (2021)
    Marine Fisheries Research Department, Southeast Asian Fisheries Development Center | Singapore
    In:  http://aquaticcommons.org/id/eprint/26827 | 23782 | 2019-11-19 01:11:10 | 26827 | Southeast Asian Fisheries Development Center, Marine Fisheries Research Department
    Details
    Publication Date: 2021-07-24
    Description: The paper discusses the significance of lipid analysis in fish. Fish lipids exist as phospholipids and triglycerides which deteriorate during storage due to hydrolysis and oxidation.
    Keywords: Chemistry ; Fisheries ; Manuals ; Culture media ; Analysis ; Analytical techniques ; Methodology ; Chemical analysis ; Lipids ; Organic compounds ; Fats ; Hydrolysis ; Chemical reactions ; Chemical degradation ; Oxidation
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    Field validation of the 'Logie' fish counter at Forge weir on the River Lune, 1992 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8532 | 1256 | 2012-12-21 15:13:52 | 8532 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The stock assessment task group report (1991) mentions that fish counters could play a key role in providing data on the size of the adult stock, and in particular the migratory salmonid stock. This report assesses the performance of the 'logie' fish counter at Forge Weir on the River Lune. Using video surveillance, a total of 1137 hours time lapse and 15 hours real time were used for validation purposes. This report looks at materials and methods, counting accuracy, sizing ability and environmental conditions, performance across the electrode array and salmonid swimming speed.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Lune Catchment ; River Fisheries ; Fish counters ; Migratory species ; Salmon fisheries ; Environmental condtions
    Repository Name: AquaDocs
    Type: monograph
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  • 74
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    The calibration of a semi-quantitative approach to fish stock assessment in the North West Region of the NRA (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8531 | 1256 | 2012-12-21 15:14:38 | 8531
    Details
    Publication Date: 2021-07-03
    Description: (1) A total of 45 sites was sampled, each being fished usingthe semi-quantitative and quantitative techniques.(2) A significant relationship existed between thesemi-quantitative and Quantitative results for all agegroups of salmonids (R2 83.4% to 96.1%, p 〈 0.0001).(3) The results from each site were categorised according toan existing classification system for quantitative andsemi-quantitative data. The semi-quantitative component ofthis system was modified using the results of thisinvestigation. The degree of error associated with sitesclassified semi-quantitatively was found to be slightlyless when using the modified system for 0+ salmon, 〉 0+salmon and 0+ trout, ranging from 10.5% to 30%.(4) Insufficient data points were available for the analysisof coarse fish data.
    Description: Environment Agency Archives North West
    Description: + Appendices
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Inland waters ; Freshwater fish ; Stock assessment ; Fish populations ; Environmental assessment ; Electric fishing
    Repository Name: AquaDocs
    Type: monograph
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  • 75
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    Summary of fishery statistics 1991 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8365 | 1256 | 2012-03-04 21:55:18 | 8365 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1991 in the region of the North West Water Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Duddon, River Ribble, River Wyre, River Derwent and River Esk.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 76
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    River Wyre - a migratory salmonid river (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8500 | 1256 | 2012-12-22 13:39:02 | 8500 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: This report has been prepared in response to a request from the National Rivers Authority. It produces a broad assessment of the River Wyre as a migratory salmonid river based on a site visit and the documentation provided, and looks at objectives of the Wyre salmon and sea trout restoration group. It also looks at ways for habitat improvement and recommends other possible means of fisheries management development for the River Wyre.
    Description: Environment Agency Archives North West
    Description: + 15 plates
    Keywords: Ecology ; Environment ; Limnology ; England ; Wyre Catchment ; River fisheries ; Habitat improvement ; Migratory species ; spawning ; Salmo salar ; Salmo trutta ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 77
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    The River Lune fact file (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7989 | 1256 | 2012-03-06 12:56:55 | 7989 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: This document provides a brief introduction to the River Lune catchment and the role that the National Rivers Authority plays in catchment management.Included are a map of the catchment and short introductions to fisheries and characteristics of the catchment.
    Description: Environment Agency Archives North West
    Description: No date on publication, date given is estimated guess.
    Keywords: Conservation ; Environment ; Limnology ; England ; Lune Catchment ; Inland fisheries ; Catchment area ; Fishery management ; Nature conservation
    Repository Name: AquaDocs
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  • 78
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    Report on the 1992 stock assessment of the Wyre catchment (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8042 | 1256 | 2012-02-22 15:08:12 | 8042 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The aim of this study was to assess the status of the juvenile salmonid and coarse fish populations of the Wyre catchment. Emphasis was placed on an examination of the distribution of spawning and nursery areas for salmonids within the study area and an assessment of the status of juvenile salmonid stocks. The species distribution and spawning areas for other fish species were also identified where possible and the status of the Wyre coarse fishery, downstream of Churchtown Weir, assessed. This report examines the results of stock assessment surveys carried out in the Wyre catchment between 2/06/92 and 11/08/92. Forty-six sites were surveyed from Tarnbrook Wyre (SD. 598577) and Marshaw Wyre (SD. 614541) downstream to St Michaels (SD. 465411). Flow, habitat and in-river obstructions have been shown to affect juvenile salmonid densities. A habitat description is provided for each site studied during the course of this study.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Wyre Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Stock assessment ; Distribution ; Population number ; Length frequency
    Repository Name: AquaDocs
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  • 79
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    Report on the 1994 juvenile salmon stocking study of Foxhouses and Grizedale Becks, River Wyre (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8044 | 1256 | 2012-02-22 15:07:40 | 8044 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The aim of this study was to assess the suitability of Foxhouses and Grizedale Becks as nursery habitat for juvenile salmon. A comprehensive fish stock assessment survey of the Wyre catchment was carried out by the NRA in 1992. This survey found that juvenile salmon were absent from two sites studied in Foxhouses Beck. In one site in Grizedale Beck, 0+ salmon were found at very low densities. Juvenile trout were found in all three sites studied in 1992. On the basis of the results of the 1992 survey, these two becks were stocked in 1994 with 0+ salmon reared from Lune broodstock at the NRA's Witcherwell Hatchery. These salmon were stocked at a known density, following a pre-stocking survey. This report examines and compares the results of the pre-stocking survey consisting of fourteen sites in the two becks, carried out between 12/04/94 and 27/04/94 and a post-stocking survey of six sites, carried out between 12/10/94 and 19/10/94. Flow, habitat and in-river obstructions have been shown to affect juvenile salmonid densities. A habitat description is provided for each site surveyed during the course of this study.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Wyre Catchment ; Salmo salar ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Stocking density ; Distribution ; Population number ; Length frequency
    Repository Name: AquaDocs
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  • 80
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    An analysis of salmon rod catch data from castle fisheries, River Derwent, 1923-1989. (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8057 | 1256 | 2012-02-24 12:39:06 | 8057 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: The aim of this study was to investigate the historical catch record from the Castle Fishery on the River Derwent over the period 1923 - 1989, to determine if changes had taken place in the composition of the catch and to examine the influence of flow on the performance of the fishery. The River Derwent is situated in West Cumbria, North West England. It flows from its source on Scafell Pike (NGR NY 229 089) westwards discharging into the Irish sea at Workington, a distance of 52 km. Over its length it receives water from an additional 214 km of stream, 5 large lakes and approximately 30 small tarns. The catchment drains a total area of 663 km2.The study concludes that through the time period there was considerable variation in catch between years. The trend was for the catch to increase steadily over the period 1923 - 1958, declining rapidly in 1959, after which catches increased steadily reaching a peak in the mid-sixties, before declining towards the end of the decade. During the seventies and eighties catches remained relatively stable at between 300 - 600 salmon per year until 1988 when over 2000 salmon were reported caught, the greatest number in any year over the study period.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Derwent Catchment ; Rivers ; Fishery surveys ; Catch statistics ; Long-term records ; Flow measurement
    Repository Name: AquaDocs
    Type: monograph
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  • 81
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    An analysis of migratory salmonid catch effort data, derived from anglers' log books, 1991 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8082 | 1256 | 2012-03-01 17:34:44 | 8082 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: 1000 log books were issued to anglers of which 236 were returned, those from the rivers Derwent, Kent, Lune and Ribble accounted for the vast majority. The Derwent had the highest catch rate of these rivers: one salmon every 13.89 hours followed by the Lune, Kent and Ribble at 16.39, 18.87 and 35.71 hours, respectively. For sea trout the Lune, Derwent and Ribble had a catch rate of approximately one fish every 10.0 hours (9.8, 10.0 and 10.64 hours),and for the Kent one fish per 16.1 hours fished. Salmon angling visits were, in general,longer than those for sea trout being between 2 and 6 hours as opposed to 2 to 4 hours. On the majority of visits (〉80%) no fish were caught and was the same for salmon and sea trout. For salmon the majority of fish were caught on fly, spinner or worm, and the least on prawn. For sea trout fly predominated. The majority of salmon caught were less than 91b in weight and were presumed to be grilse (1 sea winter). The majority of the sea trout caught weighed between 1 and 31b. The pattern of catch, effort, CPUE, abundance and catchability for salmon and sea trout were modelled using the data from the rivers Derwent, Kent and Lune. Flow significantly influenced catch, effort and catchability of salmon which had entered in a particular month. For sea trout flow was not significantly correlated with any of the dependent variables. The catchability coefficient for salmon, determined from the total number of fish, remained relatively constant over the period June to October indicating that CPUE was a reasonable measure of within season abundance. This was not found to be the case for sea trout.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Rivers ; Logbooks ; Salmo salar ; Salmo trutta ; Salmon fisheries ; Catch statistics ; Catch/effort ; Weight ; River fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 82
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    Report on an egg bioassay experiment (2021)
    National Rivers Authority North West | Preston, UK
    In:  http://aquaticcommons.org/id/eprint/8079 | 1256 | 2012-02-17 13:42:01 | 8079 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: In October 1992, a fish population survey of the Swanside Beck system revealed that the densities of juvenile salmon present in the beck were generally poor. The survey highlighted that a potential reason for this may be due to a lack of spawning substrate resulting from siltation. Numerous workers have found that increased levels of A salmonid egg box experiment of Swanside Beck carried out in the spring of 1994, revealed that the survival rates in the majority of sites were good. While the in-site variability was relatively high, mean survival rates remained in excess of 70%. As a result egg survival rates were eliminated as the reason for low juvenile salmonid production. The only site with a relatively low survival rate was Swanside Beck downstream of Cowgill Beck. However, even at this site siltation was eliminated as the cause of the increased mortality rate. It is recommended that a salmonid stocking of Swanside Beck should be carried out this year. This should be followed by an electric fishing survey to evaluate juvenile salmonid survival rates.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Salmon fisheries ; Fry ; Survival ; Stocking (organisms) ; Silting
    Repository Name: AquaDocs
    Type: monograph
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  • 83
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    An evaluation of the survival of Atlantic salmon (Salmo salar L.)fry stocked in eight streams in the North West of England. (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8083 | 1256 | 2012-03-01 17:34:08 | 8083 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-29
    Description: Eight streams from the North West of England were stocked with Atlantic salmon (Salmo salar L.) fed fry at densities ranging from 1 to 4/m2 over a period of up to three years to evaluate survival to the end of the first an d second growing periods and hence assess the value of stocking as a management practice. Survival to the end of the first growin g period (mean duration of 108 days) was found to vary between 7.8 and 41.3% with a mean of 22% and CV of 0.44. Survival from the end of the first growing period to the end of the second growing period (mean duration of 384 days) ranged from 19.9 to 34.1% with a mean of 26.3% and CV of 0.21. Survival was found to be positively related to 0+ trout density (P 〈 0.05) and negatively related to altitude (P 〈 0.05). A comparison of the raw survival data (non standardised with respect to duration of experiments) with that from other studies in relation to stocking densities revealed a negative relationship between fry survival and stocking density (P 〈 0.05). Densities in excess of 5/m2 tended to result in lower levels of survival. Post stocking fry dispersal patterns were examined for the 1991 data. On average 86.7% of the number of fry surviving remained within the stocked zone by the end of the first growing period. With the exception of one stream there was little in the way of dispersal beyond the stocked zone. The dispersal pattern approximated to the normal distribution (P 〈 0.05). It was estimated that stocking can result in a net gain of fish to a river system compared with natural productivity, however the numerical significance of this gain and its cost effectiveness need to be determined on a river specific basis.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Rivers ; River fisheries ; Fry ; Stocking (organisms) ; Redds ; Marking ; Stocking density ; Spawning populations ; Fish eggs ; Distribution ; Survival
    Repository Name: AquaDocs
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  • 84
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    Central area fisheries annual report 1995 (2021)
    National Rivers Authority North West | Warrington, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8510 | 1256 | 2012-12-21 15:35:55 | 8510 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-03
    Description: The purpose of this report is to record key events and achievements of the NRA Central Area Fisheries Function in 1995. Rivers include the Ribble, Hodder and Lune. The report looks at Hydrological and meteorological data, site visits made during the year, communications and reports, Capital works and purchases, Stock assessment, monitoring and specific investigations, Fisheries Management advice, Fish kills and rescues, Fish rearing and stocking. It also looks at rod and net catches for salmon and sea trout, micro-tag returns, the drought, the results of the 1995 objectives set the year before and the key objectives for 1996.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Rivers ; River fisheries ; Coarse fish ; Salmo salar ; Salmo trutta ; Stream flow ; Catch statistics ; Stock assessment ; Fish counters ; licensing ; Fisheries management
    Repository Name: AquaDocs
    Type: monograph
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  • 85
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    Summary of fishery statistics 1990 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8363 | 1256 | 2012-03-04 21:55:34 | 8363 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1990 in the region of the North West Water Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Duddon, River Ribble, River Wyre, River Derwent and River Esk.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 86
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    Summary of fishery statistics 1993 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8371 | 1256 | 2012-03-04 21:54:53 | 8371 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1993 in the North West region of the National Rivers Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Ribble and River Derwent.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 87
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    Summary of fishery statistics 1992 (2021)
    National Rivers Authority North West
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/8370 | 1256 | 2012-03-04 21:55:10 | 8370 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This fisheries report summarises developments of the year 1992 in the North West region of the National Rivers Authority. It provides catch statistics, rod and line and commercial catches for salmon and sea trout, fish culture and hatchery operations, restocking with trout and freshwater fish, upstream fish movement recorded at authority fish counters, counts of salmon and sea trout spawning redds, fish mortalities, licences issued, and prosecutions. Among the streams that are covered in the report are the River Lune, River Kent, River Leven, River Ribble and River Derwent.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Cumbria ; Lancashire ; Inland fisheries ; Fish catch statistics ; Angling ; Stock assessment ; Licensing ; Fishing mortality ; Redds ; Salmonid fisheries ; Migratory species ; Hatcheries ; Stocking (organisms)
    Repository Name: AquaDocs
    Type: monograph
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  • 88
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    Report on the 1995 stock assessment of the Douglas catchment (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7997 | 1256 | 2012-02-17 22:04:57 | 7997 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The River Douglas has a long industrial heritage beginning in the early 18th century with its use by boats carrying goods between Wigan and Tarleton. The River and its tributaries have also historically been, and to a certain extent are still, subject to polluting inputs from the urban, agricultural and industrialised areas located within its catchment. During the early stages in the production of the River Douglas Catchment Management Plan, it became apparent that very little data existed on the populations of coarse and salmonid fish species within the River Douglas system. The data that did exist was largely anecdotal, consisting of catch reports from anglers or water bailiffs, or of dead and distressed fish following pollution incidents. This study was initiated to assess the status of coarse and salmonid fish species within the River Douglas system and so address the lack of knowledge. Eighty two sites were surveyed by electric fishing, including 14 sites using an electric fishing punt and up to four anodes. The data was analysed according to a new National Fisheries Classification Scheme. This classified the sites by the fish stock s present and compared the results with a database containing information from sites around the country that have similar habitat types. A stocking experiment was also undertaken in the River Lostock using chub reared at the Leyland Hatchery. These were marked with an identifiable blue spot in the spring of 1995 and then released into three, previously surveyed, locations in the river. These sites were then resurveyed during the summer stock assessment. This report also Site Reports with details on monitored sites, habitat features and fishery classification.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Rivers ; Electric fishing ; Catchment area ; Stock assessment ; Salmo trutta ; Salmo salar ; Salmonid fisheries ; Biomass
    Repository Name: AquaDocs
    Type: monograph
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  • 89
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    An investigation of the recaptures rates for tagged brown trout stocked into the River Ribble (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7999 | 1256 | 2012-02-17 22:01:15 | 7999 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The angling season for non-migratory brown trout, in the Environment Agency (EA) North West Region, runs from March 15th to September 30th. Each year, large numbers of farm reared brown trout are stocked into the rivers of the North West Region's Central Area. In 1994, approximately 20,000 brown trout were introduced into the River systems of the Lune, Wyre and Ribble by local angling clubs and fishery owners. Most of these fish were stocked at a length greater than that defined by local byelaws as the takeable size (200mm). Introductions are made to supplement the existing wild brown trout populations within the river and increase the probability of an angler catching a fish. Stocking with fish of a sufficient length allows the successful angler to remove the catch for their own use. In this way, stretches of the rivers are effectively managed as "put and take" fisheries for brown trout. A number of brown trout fingerlings are also introduced each year by angling clubs and fishery owners. These are stocked with the expectation that the fish will survive in the river to grow, over-winter, and eventually attain a takable size with an increased degree of "wildness". The lower cost of fingerlings, as opposed to trout of a takable length, makes their introduction more attractive to angling clubs since a greater number can be stocked for a given cost. Although the practise of stocking brown trout has occurred for many years in the Central Area, there is little information of its success in terms of increasing anglers catches, or the survival offish introduced. This study was initiated to determine the recapture rates by angling of brown trout following their introduction into a river fishery. The information gained from this study can then be used to give guidance to angling clubs and fishery owners on the optimal strategies for stocking fish.
    Description: Environment Agency Archives North West
    Keywords: Ecology ; Fisheries ; Limnology ; England ; Ribble Catchment ; Salmo trutta ; Rivers ; River fisheries ; Salmon fisheries ; Fishery surveys ; Angling ; Stocks ; Stock assessment ; Stocking (organisms)
    Repository Name: AquaDocs
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  • 90
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    Report on the collection of salmon creel census data from Rivers Ribble and Hodder (2021)
    National Rivers Authority North West | Preston, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/7995 | 1256 | 2012-02-17 13:42:34 | 7995 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-27
    Description: The River Ribble bailiff team completed a total of 377 salmonid creel censuses by interviewing anglers fishing on the banks of the Rivers Ribble and Hodder during 1994. The study was undertaken for a number of reasons: (i) , To determine which areas of the river were fished by anglers. (ii) To ascertain which fishing methods were used in these areas. (iii) To identify the success of each fishing method within each area of the River Ribble system. In a limited 1993 sampling programme, 55 censuses were carried out. Results from these indicated that fishing with worm as bait was the most common method (39% of anglers interviewed) and also resulted in the greatest number of salmon being caught (61% of all salmon). The 1994 census data were collected from all areas of the Ribble system during the months of June to October. The data presented here are for anglers fishing for salmon only or for those fishing for salmon and sea trout at the same time. All of the fish caught were salmon.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; England ; Ribble Catchment ; Rivers ; Census ; Salmon fisheries ; Angling ; Catching methods ; Catch statistics
    Repository Name: AquaDocs
    Type: monograph
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  • 91
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    The production of algae growing on gravel in a chalk-stream (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5160 | 3949 | 2011-09-29 15:19:35 | 5160 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: Epilithic algae, ie that growing on the surface of stones, was studied as part of the work on the energy flow of the chalk-stream ecosystem, by the River Laboratory. The study area was on Bere Stream and 2 neighbouring streams. The algal biomass was estimated from analysis of chlorophyll a. In Bere Stream the peak chlorophyll a cover occurred in April, while in the neighbouring streams, which have considerably lower nutrient levels, there was on peak. Assuming that 2% of a diatoms dry wt is chlorophyll a, then even in mid-April the biomass of epilithic algae amounted to no more than 15 g dry wt m Super(-2) of exposed gravel. Annual production was calculated to be 〉 15 times greater than biomass. The estimation of net primary production is always difficult for benthic floras and comparisons are especially difficult when different methods are used. But these figures contrast sharply with those for Ranunculus (water crowfoot) which has a ratio of annual production to maximal seasonal biomass of 1:16. The accumulation of algal biomass is apparently being prevented. Some organic matter may be excreted; some algae will be washed off the bed of the stream by current and grazing by herbivorous invertebrates will also tend to prevent algal accumulation.
    Keywords: Biology ; Ecology ; Environment ; Phytoplankton ; Algae ; England ; Dorset ; Annual report
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  • 92
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    Year class strengths of perch and pike in Windermere (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5158 | 3949 | 2011-09-29 15:19:31 | 5158 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The pike (Esox lucius) year classes are more stable than those of the perch (Perca fluviatilis), and have been shown to be closely correlated with temp conditions during the first few months of life. The perch year class strengths have been more variable; for success they require the presence of several positive conditions and the absence of many adverse conditions which could cause failure, a favourable combination of circumstances rarely occurs. The conclusions refer only to Windermere from 1941-1964.
    Keywords: Biology ; Ecology ; Limnology ; Age composition ; Esox lucius ; Perca fluviatilis ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
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  • 93
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    The ecology of phytoplankton in Shropshire and Cheshire meres (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5159 | 3949 | 2011-09-29 15:19:33 | 5159 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: This review summarizes the findings of 5 years' research (June 1970-June 1975) on the meres of the Shropshire-Cheshire Plain. A mere is a small, shallow lake; supplied principally by ground water, whose chemical composition is infkuenced by the glacial frift through which it is percolating. The seasonal periodicity of the phytoplankton in the meres involved work mainly in the Grose Mere. Here diatoms were typically dominant in Feb & March, green algae in April & May, blue-green algae in early summer and dinoflagellates in late summer. This pattern is broadly similar from year to year, and has been suggested to be representative of a 'regional type'; it is also similar to that described for many of the world's mildly eutrophic temperate lakes. Vertical distribution of phytoplankton is influenced by their buoyancy (or lack of it) of by their ability to swim. A stylized depth-time distribution of 4 major phytoplankton components in Crose Mere is given diagrammatically.
    Keywords: Ecology ; Environment ; Limnology ; Freshwater ecology ; phytoplankton ; England ; Cheshire ; Shropshire ; Annual Report
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    The ecology of the Gussage, a lined winterbourne (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5165 | 3949 | 2011-09-29 15:18:21 | 5165 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The Gussage, a Dorset winterhourne (intermittent chalk stream), has been used to convey water from a compensation borehole to the River Allen to supplement its flow to meet demand for water. Sections of the Gussage have been lined with chalk, butyl sheeting or polythene sheeting to prevent water loss through the porous bed. The effects of this major environmental modification associated with these abstraction practices in the winterbourne catchments have been studied in the Gussage system since 1973. To compensate for the lack of adequate pre-lining data, comparative studies have been made on 3 small unlined chalk streams of varying flow regimes, ie. the Crichel (a winterbourne), the North Winterbourne and the Tarrant (permanent discharge in the reaches studies). The distribution of macrophytes and invertebrates in winterbournes are compared with that in natural and artificial permanent streams. Statistical analysis showed samples from the winterbourne sites and the unmodified permanent stream sites are quite distinct, despite the fact that no samples were taken from winterbourne sites during the dry phase. This emphasizes the differences between the fauna of an intermittent and a permanent stream and suggests that alteration of the flow regime could be a significant factor. Where flow regime has been altered, as in the Gussage downstream of the borehole, the samples occupy an intermediate position. Within this group of modified sites there is no apparent gross difference between the invertebrates of lined or unlined reaches.
    Keywords: Biology ; Ecology ; Environment ; Ecological distribution ; Ecology ; Watersheds ; England ; Dorset ; Annual report
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  • 95
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    Limnetic crustaceans in Esthwaite water and adjacent lakes (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5175 | 3949 | 2011-09-29 15:19:19 | 5175 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Limnetic crustaceans (i.e. those which live in the open water of lakes and ponds) were investigated in Esthwaite water and adjacent lakes. These are represented by two groups, Copepoda and Cladocera.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Lakes ; Cladocera ; England ; Esthwaite Water ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
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    Format: 70-73
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    Bacterial production of nitrate in aquatic systems: progress report. Nitrate-loss processes in raw water (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5126 | 1256 | 2011-09-29 15:23:16 | 5126 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: This short interim progress report builds on previous progress reports which have described the quantification of the process both within and between lakes of different degrees of eutrophication. These data indicated that slight changes in methodology, particularly when investigating sediment deposits, could grossly affect the measured activity. The aim of the present research was an attempt to rationalize these differences. If this could be achieved it would enable meaningful interpretation of published data obtained using different methods and therefore enlarge the available database. In addition some observations have been made on the production of nitrite by Grasmere profundal sediment slurries sampled during the circulation period.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater lakes ; Nitrification ; Sedimentation ; Ammonia ; Slurries ; England ; Grasmere Lake
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 2
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  • 97
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    The changing chemical composition of chalk streams and rivers (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5157 | 3949 | 2011-09-29 15:19:58 | 5157 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The area studied was the River Frome system below Dorchester. The main river has its origins mainly in chalk springs, although some of its tributaries have surface run-off from farm lands and heath-lands. Thus the chemistry of the river is affected by changes in land practice and differences in the geology of the catchment area. Regular chemical analysis of chalk waters started at the River Laboratory in 1964, Regular weekly analyses have been carried out since 1965 at Bere Stream (a small chalk stream) and the River Frome (a large chalk stream); also single samples have been analysed to provide preliminary information. In 1970-71 an attempt was made to discover the contribution each main source made to the flow and chemical composition of the River Frome. Results of these investigations are presented in the paper.
    Keywords: Chemistry ; Environment ; Chemical analysis ; Chemical composition ; Rivers ; Stream flow ; Annual report ; England ; Dorset
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  • 98
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    The communities of running water in Cumbria (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5164 | 3949 | 2011-09-29 15:18:18 | 5164 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: For conservations of nature to be effective. there must be an understanding of what is present to be conserved. Thus in order to conserve the communites of the Cumbrian rivers, there must first be surveys to determine the spp present and their relative numbers. This has been carried out for many years, by a number of workers. It has been shown that the communities present are influenced by the substratum, the flow, the chemicals present, water temp and predation. Findings of the work on the River Lune were given at a seminar on the rivers of north-west Europe, held at Amiens in November, 1975. The proceedings of the seminar are to appear in special numbers of Bulletin francais de Pisciculure.
    Keywords: Ecology ; Environment ; Aquatic communities ; Rivers ; England ; Cumbria ; Annual report
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  • 99
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    Geochemistry of lipids in lacustrine sediments (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5171 | 3949 | 2011-09-29 15:18:48 | 5171 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An explanation of the basic premises of the subject and its terminology is given. The article then outlines aspects of research on the organic material found in lacustrine sediments, and the analytical methods involved.
    Keywords: Chemistry ; Earth Sciences ; Diagenesis ; Freshwater lakes ; Geochemistry ; Lipids ; Sediment analysis ; Annual report
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 45-56
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  • 100
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    Aspects of the biology of coarse fish in the Dorset Stour (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5178 | 3949 | 2011-09-29 15:16:57 | 5178 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Some of the results from an investigation of five species of coarse fish, in the Stour River, carried out from 1968-1978 are presented in this article. The species involved were: Rutilus rutilis, Leuciscus leuciscus, L. cephalus, Esox lucius and Perca fluviatilis : which are of particular interest to anglers. Although these species show some similarities, as in the shape of the annual and seasonal growth curves, in most other respects each species occupies a distinct niche in the ecosystem and has a life-history strategy peculiar to itself. In this study only 5 species were investigated. When all the species present are considered the relationships or diversities suggested here will therefore be made far more complex.
    Keywords: Biology ; Ecology ; Life history ; Coarse fish ; Rutilus rutilus ; Leuciscus leuciscus ; Leuciscus cephalus ; Esox lucius ; Perca fluviatilis ; England ; River Stour ; Annual report
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    Format: application/pdf
    Format: 51-59
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