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  • LUNAR AND PLANETARY EXPLORATION  (3,679)
  • Fisheries
  • 2020-2024  (8)
  • 2005-2009  (77)
  • 1975-1979  (3,681)
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  • 1
    Publication Date: 2024-06-13
    Description: In a marine environment that is rapidly changing due to anthropogenic activities and climate change, area-based management tools are often used to mitigate threats and conserve biodiversity. Marine protected areas (MPAs) are amongst the most widespread and recognized marine conservation tools worldwide, however, MPAs alone are inadequate to address the environmental crisis. The promotion of other effective area-based conservation measures (OECMs) under draft Target 3 of the Post-2020 Global Biodiversity Framework, i.e., conserving 30% of marine areas by 2030, holds promise to acknowledge sites and practices occurring beyond MPAs that contribute to conservation. Here, we evaluate the potential recognition of OECMs into Indonesia's national policy framework on marine resource management and provide the first-ever overview of distribution and types of potential marine OECMs in Indonesia, including a review of the existing evidence on conservation effectiveness. We identified 〉 390 potential marine OECMs, led by government, customary and local communities, or the private sector, towards diverse management objectives, including habitat protection, traditional/customary management, fisheries, tourism, or other purposes. While some evidence exists regarding the conservation effectiveness of these practices, the long-term impacts on biodiversity of all potential marine OECMs in Indonesia are unknown. Many OECM elements have been included in several national policies, yet there are no established mechanisms to identify, recognize and report sites as OECMs in Indonesia. We propose four transformational strategies for future OECM recognition in Indonesia, namely: (i) safeguard customary and traditional communities, (ii) leverage cross-sector and cross-scale collaboration, (iii) focus on delivering outcomes, and (iv) streamline legal frameworks. Our study shows that OECMs have the potential to play a significant role in underpinning marine area-based conservation in Indonesia, including supporting the Government of Indonesia in reaching national and international conservation targets and goals.
    Keywords: Area-based management ; Biodiversity conservation ; Customary management ; Fisheries ; Co-management ; Sustainable marine management
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 2
    Publication Date: 2024-06-10
    Description: This draft White Paper has been prepared as part of the Vision 2030 process of the United Nations (UN) Decade of Ocean Science for Sustainable Development (hereafter, Ocean Decade). The Vision 2030 process aims to identify tangible measures of success for each of the ten Ocean Decade Challenges by 2030. From a starting point of existing initiatives underway in the Ocean Decade and beyond, and through a lens of priority user needs, the process determines critical gaps in science and knowledge, needs for capacity development, priority datasets, infrastructure, and technology for each Challenge. Focusing investments in science and knowledge to address these needs will help ensure progress towards meeting each critical Challenge by the end of the Ocean Decade in 2030. The results of the process will contribute to the scoping of future Decade Actions, identification of resource mobilisation priorities, and ensure relevance of the Challenges over time. This draft White Paper is one of a series of ten White Papers, all of which have been authored by an expert Working Group and discussed at the 2024 Ocean Decade Conference. A synthesis report, authored by the Intergovernmental Oceanographic Commission of the United Nations Educational, Scientific, and Cultural Organization (UNESCO/IOC), will accompany the White Papers. With a substantial portion of people depending on the ocean as a primary source of nutrition and livelihood, a significant challenge comes into focus: How can we ensure that the ocean's resources continue to effectively nourish an expanding global population? The Ocean Decade responds to this critical concern through its Challenge 3: “Sustainably nourish the global population”.
    Description: Published
    Description: Refereed
    Keywords: Food ; Agriculture ; Sustainable economy ; Fisheries ; World population ; Ocean economy ; Nutrition ; Aquatic foods ; Aquaculture ; Sustainable production ; Forward look ; Vision paper
    Repository Name: AquaDocs
    Type: Report
    Format: 33pp.
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  • 3
    Publication Date: 2024-05-20
    Description: To ensure the long-term sustainable use of African Great Lakes (AGL), and to better understand the functioning of these ecosystems, authorities, managers and scientists need regularly collected scientific data and information of key environmental indicators over multi-years to make informed decisions. Monitoring is regularly conducted at some sites across AGL; while at others sites, it is rare or conducted irregularly in response to sporadic funding or short-term projects/studies. Managers and scientists working on the AGL thus often lack critical long-term data to evaluate and gauge ongoing changes. Hence, we propose a multi-lake approach to harmonize data collection modalities for better understanding of regional and global environmental impacts on AGL. Climate variability has had strong impacts on all AGL in the recent past. Although these lakes have specific characteristics, their limnological cycles show many similarities. Because different anthropogenic pressures take place at the different AGL, harmonized multilake monitoring will provide comparable data to address the main drivers of concern (climate versus regional anthropogenic impact). To realize harmonized long-term multi-lake monitoring, the approach will need: (1) support of a wide community of researchers and managers; (2) political goodwill towards a common goal for such monitoring; and (3) sufficient capacity (e.g., institutional, financial, human and logistic resources) for its implementation. This paper presents an assessment of the state of monitoring the AGL and possible approaches to realize a long-term, multi-lake harmonized monitoring strategy. Key parameters are proposed. The support of national and regional authorities is necessary as each AGL crosses international boundaries.
    Description: Published
    Description: 101988
    Description: JCR Journal
    Keywords: Fisheries ; Limnology ; Pollution ; Biodiversity ; Climate change ; Erosion
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
    Publication Date: 2024-04-04
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: living marine resources ; Forecasting ; prediction ; fish ; Fisheries ; Seasonal to Decadal Prediction ; Climate services ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RB Earth sciences::RBK Hydrology and the hydrosphere::RBKC Oceanography (seas and oceans)
    Language: English
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  • 5
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    Springer Nature | Palgrave Macmillan
    Publication Date: 2024-03-29
    Description: This open access book explores fishing livelihoods in the context of the wider contexts in which they are embedded. Drawing on case studies from across the Asia-Pacific region, the book highlights how fishing livelihoods are shaped by globalisation, social relationships and governance. The book concludes by showing how better understanding these relationships can contribute to governance for healthier ecosystems and social wellbeing. This is an open access book. This is an open access book.
    Keywords: Fisheries ; marine social science ; fishing livelihoods in the Asia-Pacific ; sustainable fishing ; environmental sustainability ; food security ; coastal conservation ; fish stocks ; fisheries governance ; Fishing livelihoods and social diversity ; Fishing livelihoods and wellbeing ; Open Access ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPQ Central / national / federal government::JPQB Central / national / federal government policies ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography::RGB Physical geography and topography ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNF Environmental management ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography::RGC Human geography
    Language: English
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  • 6
    Publication Date: 2024-03-05
    Description: Con sus 220 km2 la región geográfica de Bahía de Nipe es el mayor acuatorio en su tipo en Cuba, donde se encuentran representaciones de diversos ecosistemas a lo largo de sus costas. Los asentamientos humanos y sus múltiples actividades productivas de importancia y magnitud, le dan a esta bahía relevancia como recurso natural que sustenta usos estratégicos para el país.
    Description: Other
    Keywords: Contaminación ; Metales pesados ; Fuentes contaminantes ; Pesquerías ; Pollution ; Heavy metals ; Plaguicides ; Fisheries ; Plaguicidas ; Sources pollution
    Repository Name: AquaDocs
    Type: Thesis/Dissertation
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  • 7
    Publication Date: 2024-01-25
    Description: La producción de ostión en Cuba aumenta hacia el este, y los máximos de abundancia y captura se presentan en la zona costera cercana a la cuenca del río Cauto, en la región correspondiente al municipio Manzanillo, provincia de Granma. En esta región habitan el ostión de mangle antillano (Crassostrea rhizophorae Guilding, 1828), y el ostión americano (Crassostrea virginica Gmelin, 1791). Aunque la tendencia histórica ha sido al incremento, posterior a 2013 (853 t) la producción promedio anual disminuye a 307 t. El objetivo de esta investigación fue evaluar el estado actual del recurso ostión y su aprovechamiento industrial en la región del golfo de Guacanayabo, en relación a la situación ambiental de sus hábitats. Se realizó un diagnóstico de la pesquería de ostión y de la gestión ambiental de la pesca extractiva para determinar impactos ecosistémicos. Se identificaron como principales factores de impacto negativo, que inciden sobre las poblaciones de ostión y sus hábitats, el incumplimiento del periodo de veda, el manejo inadecuado de la pesca extractiva, y eventos de contaminación, que afectan los bienes y servicios ecosistémicos del manglar y reducen las poblaciones de ostión. Se propone la ostricultura artesanal como alternativa pesquera sostenible y se proyectó un plan de producción de ostión para 2023-2030. Se estimó que a calidad ambiental de la región donde se desarrollan las especies de interés es adecuada para su desarrollo.
    Description: Oyster production in Cuba increases to the east, and the maximum abundance and catch occur in the coastal zone near the Cauto river basin, in the region corresponding to the Manzanillo municipality, Granma province. The West Indian mangrove oyster (Crassostrea rhizophorae Guilding, 1828), and the American oyster (Crassostrea virginica Gmelin, 1791) inhabit this region. Although the historical trend has been to increase, after 2013 (853 t) the average annual production decreases to 307 t. The objective of this research was to evaluate the current state of the oyster resource and its industrial use in the region of the Guacanayabo Gulf, in relation to the environmental situation of its habitats. A diagnosis of the oyster fishery and the environmental management of extractive fishing was carried out to determine ecosystem impacts. The main factors of negative impact, which affect oyster populations and their habitats, were identified as non-compliance with the closed season, inadequate management of extractive fishing, and pollution events, which affect the goods and ecosystem services of the mangrove and reduce oyster populations. Artisanal oyster farming is proposed as a sustainable fishing alternative and an oyster production plan was projected for 2023-2030. It is estimated that the environmental quality of the region where the species of interest develop is adequate for their development.
    Description: Published
    Description: Refereed
    Keywords: Golfo de Guacanayabo ; Gestión ambiental ; Pesquería ; Ostricultura ; Gulf of Guacanayabo ; Environmental management ; Fisheries ; Ostrich farming
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 8
    Publication Date: 2024-01-11
    Description: The 60–80s of the last century were the period of the most rapid development of commercial oceanology in the Azov and Black Sea Scientific Research Institute of Marine Fisheries and Oceanography (AzCherNIRO, further renamed YugNIRO). In addition to the monitoring of oceanographic processes, it was involved in the areas of general marine ecology, monitoring of marine pollution, and space oceanology. Oceanographic information is used in forecasting the state of aquatic ecosystems at various timescales and is crucial for fishing forecasts. In 1981, a satellite data reception center was established in AzCherNIRO. In the 80–90s, in YugNIRO, an optimal procedure was created for multidimensional predictive monitoring of the state of the Black Sea ecosystem. In September 1986, within the Laboratory of Commercial Oceanology of the Black Sea, a group for the conservation of marine ecosystems was created, which turned into a sector in January 1989, and into a separate laboratory in December 1996. Its reasearchers carried out multidisciplinary environmental studies, investigating the ecological status of the aquatic areas affected by the facilities of the marine industry during their operation, monitoring the level of soil contamination, and excercising the toxicological control of fish and fish products. YugNIRO oceanological studies conducted in the World Ocean from the early 1970s to the early 1990s made it possible to link the productivity and catches of exploitable species to the atmospheric circulation, changes in the climatic fields of currents, as well as to the geo- and heliophysical factors, which enabled the fishing predictions with a one-year lead time or more for the fishing areas of the Central, Southeastern and Southwestern Indian Ocean, the Patagonian Shelf, and the Indian Ocean sector of Antarctica. In the 70–90s and early 2000s, YugNIRO conducted marine geological studies facilitating fishing operations and environmental protection in the Gulf of Aden, on the bottom elevations of the tropical and subtropical parts of the Indian Ocean, in the Antarctic Shelf area, and in the Black and Azov Seas. This article lays down the current major goals and prospects of commercial oceanology.
    Description: 60–80-е годы прошедшего столетия были в АзЧерНИРО (ЮгНИРО) периодом наиболее активного развития промысловой океанологии. Кроме мониторинга океанографических процессов она начала внедряться в сферы общей экологии моря, мониторинга загрязнения моря, космической океанологии. Океанографическая информация используется при разработке прогнозов состояния водных экосистем различной заблаговременности и является неотъемлемой составляющей рыбопромысловых прогнозов. В 1981 г. в АзЧерНИРО был создан центр приема спутниковой информации. В 1980–1990-х гг. в ЮгНИРО была создана оптимальная для Черного моря схема комплексного прогностического мониторинга состояния его экосистемы. В сентябре 1986 г. в составе лаборатории промысловой океанологии Черного моря была создана группа, в январе 1989 г. — сектор, в декабре 1996 г. — лаборатория охраны морских экосистем. Сотрудниками лаборатории проводились комплексные экологические исследования состояния акваторий предприятий морехозяйственого комплекса в условиях их производственной деятельности, контроль уровня загрязненности почв, токсикологический контроль рыбы и рыбопродукции. Океанологические исследования ЮгНИРО, проводимые в Мировом океане с начала 1970-х до начала 1990-х гг., позволили получить систему связей урожайности и вылова промысловых объектов с особенностями атмосферной циркуляции, изменениями макромасштабных полей течений, гео- и гелиофизическими факторам для прогноза промысловых характеристик с заблаговременностью год и более в промысловых районах центральной, юго-восточной и юго-западной частей Индийского океана, в районе Патагонского шельфа, в индоокеанском секторе Антарктики. Выполнение морских геологических работ в рыбопромысловых и природоохранных целях проводилось ЮгНИРО в 1970–1990-х и в начале 2000-х гг. в Аденском заливе, на поднятиях тропической и субтропической частей Индийского океана, на шельфе Антарктиды, в Черном и Азовском морях. В статье формулируются основные современные цели и пути развития промысловой океанологии.
    Description: Published
    Description: Non Refereed
    Keywords: Commercial oceanography ; Marine geology ; Ecosystems ; Fisheries ; Промысловая океанография ; Морская геология ; Экосистемы ; АзЧерНИРО ; ЮгНИРО ; Промысловые прогнозы ; Океанографическая информация ; Океанологические исследования ; YugNIRO ; AzCherNIRO ; ASFA_2015::F::Fishery oceanography ; ASFA_2015::F::Forecasting ; ASFA_2015::F::Fishery institutions ; ASFA_2015::M::Monitoring
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: pp.159-169
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  • 9
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    Woods Hole Oceanographic Institution
    Publication Date: 2022-05-26
    Description: Fish and fishermen appear to be in a serious decline in New England. The haddock are overfished, inshore herring stocks are depleted, yellowtail flounder and lobster are scarce. The popular image is of grizzled fishermen, their boats chipped, scarred, old-fashioned hulks of wood tied up two and three abreast along the rotting wharves and piers of New England's depressed port towns. In this research project, we wanted to determine the state of the New England fishing industry and to propose acceptable methods for the management of the fishery. During our early discussions with the fishing industry people, we mentioned that we were interested in limited effort programs as they might be applied to New England fishermen. We carefully, and probably tediously, explained the "theory of limited effort" and we were generally thought to be daft. We were told we had things backwards--that the fishing industry needed more fish, more men, more boats - and that the way to accomplish this was to get a 200-mile fishing limit and kick the foreigners out. One of these wishes has come true - in the spring of 1976, P.L. 94-265 established a 200-mile fishing zone off the United States, with regional management councils to make management plans and allocate the resources first to United States fishermen, with surpluses to foreign fishermen.
    Description: Prepared with funds from the Pew Memorial Trust and by the Department of Commerce, NOAA Office of Sea Grant under Grant #04-5-158-8 and Grant #04-6-158-44106, and the Institution's Marine Policy and Ocean Management Program.
    Keywords: Fisheries ; Management
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 10
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    Woods Hole Oceanographic Institution
    Publication Date: 2022-05-25
    Description: The first year of the New England Regional Fisheries Management Council has been marked by its experimental aura. Neither the Council nor the various sectors (representatives of the Federal and State agencies, members of the fishing industry, the public at large) were clear as to exactly what they were to do and how they were to do it--except in the broadest, most flexible (ambiguous?) terms. This created certain operational difficulties, and confusion for those whose livelihood was affected by the Council's operation. This latter group, particularly the fishermen, knew little of what went on, save in terms of the 'public facet of the Council--i.e., that portion of the Council's performance which occurred during the monthly meetings which were open to the public and which, supposedly, received public input at that time. This study defines that public face, deliberately avoiding the presentation of any data which was not accessible to the average audience participant, in an attempt to present some of the behavior which all participants demonstrated and which generated responses and reactions on the part of the other sectors. It uses standard anthropological techniques of data gathering and analysis to show the degree to which impression management on the part of all the actors operated in a systematic fashion to produce action, reaction, and counter-action. Particularly emphasized is the communication aspects.
    Description: Prepared with funds from the Pew Memorial Trust and by the Department of Commerce, NOAA Office of Sea Grant under Grant #04-7-158-44104, and the Marine Policy and Ocean Management Program of the Woods Hole Oceanographic Institution; and by sabbatical funding from the State University of New York.
    Keywords: Legislation ; Fisheries ; Sociocultural analysis
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
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  • 11
    Publication Date: 2022-05-25
    Description: Author Posting. © Elsevier B.V., 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Harmful Algae 7 (2008): 772-781, doi:10.1016/j.hal.2008.03.002.
    Description: In this study, we develop a framework for measuring the value of harmful algal bloom (HAB) predictions. The framework captures the effects of both private and public responses to HABs. Using data from the New England nearshore commercial shellfish fishery and impact estimates for a large-scale HAB event in 2005, we illustrate how the potential value of HAB forecasts may be estimated. The results of our study suggest that the long-term value of a HAB prediction and tracking system for the Gulf of Maine is sensitive to the frequency of HAB events, the accuracy of predictions, the choice of HAB impact measures, and the effectiveness of public and private responses.
    Description: This paper is a result of research funded in part by the National Oceanic and Atmospheric Administration’s Coastal Ocean Program under award #NA04NOS4780270 to the Woods Hole Oceanographic Institution.
    Keywords: Harmful algal bloom (HAB) ; Red tide ; Fisheries ; Value of information ; Forecast ; Marine scientific research
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
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  • 12
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    Victoria: Seychelles Fishing Authority | Victoria
    Publication Date: 2021-08-09
    Description: Published
    Description: Industrial tuna fishing
    Keywords: Tuna ; Fisheries ; Fishery economics ; Fishery industry ; Fishery statistics ; Tuna fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 1589602 bytes
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    Format: 28
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  • 13
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    Programme Gestion Intégrée des Ressources Marines et Côtières, Dakar (Senegal)
    Publication Date: 2021-05-19
    Description: Fondée sur l'intégration des principes et démarqhes des sciences de l'information et de la communication avec ceux du marketing social et relationnel, la stratégie de communicaton du Programme Girmac se décline sous la forme d'une vision globale, des objectifs généraux, des cibles ainsi que des activités et outils spécifiques de communication
    Description: Published
    Description: Girmac. strategie de communication
    Keywords: Marine environment ; Communication ; Fisheries ; Communication ; Information scientists ; Communication systems ; Marine environment ; Fisheries ; Canoe fisheries
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    Type: Journal Contribution
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  • 14
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    Pontificia Universidad Católica de Valparaíso
    Publication Date: 2021-05-19
    Description: The exploitation status of cardinalfish (Epigonus crassicaudus) yielded in Chile between 33° to 41°S was analyzed. An indirect assessment was performed between 1997 and 2003 through size-structured model with a transition matrix defining the changes among sizes. The model was calibrated using size structures, official landings, catch-per-unit of effort (CPUE) taken from commercial fishing logbooks and standardized by generalized linear models (GLM). After 7 years of an intense fishery activity, we concluded that the cardinalfish resource in Chile is on the recruitment overfishing limit. On 2003, the spawning biomass with respect to the virginal spawning biomass is close to 40%. The biological references points (BRP) based on spawning per recruit biomass (SPR) support this assesment because the fishing mortality level on 2003 (Fact) was very close to fishing mortality level of 40% of SRP at virginal value (F40%).
    Description: Published
    Description: Besugo, Cardinalfish
    Keywords: Fisheries ; Stock assessment ; Exploitation ; Fisheries ; Stock assessment
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  • 15
    Publication Date: 2021-05-19
    Description: This document, which is directed at the fishing sector, researchers, conservationists and fishery administrators, was developed by researchers who are members of the Specialists Group for Marine Turtle Research and conservation in the Southwestern Atlantic Ocean (SWA) in response to the urgent need to evaluate the impact generated on sea turtles by fisheries. Historically, sea turtle conservation efforts have focused almost exclusively on the protection of nesting beaches. Nevertheless, over the last decade, research has proved incidental mortality as a result of fishing activities to be one of the greatest threats to these animals. This type of interaction is not only problematic for turtles, but also generates financial losses for fishermen and businesses. In spite of the efforts that are currently underway, researchers still do not have a detailed understanding of the impact that bycatch produces on sea turtle populations in the SWA. We have a long way to go before its effects can be minimized. Further research is needed regarding the biology and ecology of the various turtle species as well as the effective application of mitigation measures. The life cycles of sea turtles are long and complex. Turtles occupy various ecosystems (nesting beaches, coastal, neritic and oceanic zones, as well as pelagic and demersal areas) throughout their lifetimes, transcending various Exclusive Economic Zones and International Waters. The five species that inhabit the SWA region perform vast feeding and reproductive migrations, traveling through areas where many different fishing fleets operate. Therefore, sea turtles in the SWA interact with virtually all fisheries. These circumstances make it necessary to carry out biological, fishing related and conservation studies on a regional level. The efficiency of the existing international and national legal instruments has yet to be determined, in terms of their effectiveness in protecting sea turtles. In some cases, legislation that is specifically related to the interaction between fisheries and turtles does exist, such as those laws requiring the mandatory use of turtle excluding devices (TEDs). There are also explicit bans on sea turtle capture. Nevertheless, none of these regulations prevent sea turtle bycatch. Although some regional legal instruments are needed, these and the existing legislation will only be effective if they are accompanied by a broader range of permanent education and control measures, to achieve the commitment of all the parties involved. The ecosystem approach is gaining popularity among fishery administration organizations. Research and conservation efforts should also be moving in that direction. A regional and international effort is required in order to compile information regarding the bycatch produced by the various types of fisheries and fleets operating in the area. The enormous increase in fishing pressure that these fleets are exerting in this area has not been accompanied by an increase in information regarding the bycatch of species that have no commercial value. Pelagic longlining is one of the fishing methods, which must be most closely monitored, due to the high levels of bycatch that it produces, as well its ample distribution throughout the region, and the high level of fishing effort that it accounts for. Coastal trawlers and gillnetters must also be considered critical players, because they too produce a large rate of bycatch. These are the three types of fisheries that are most broadly distributed throughout the region, accounting for the majority of the fishing effort. Most of the institutions that work toward sea turtle conservation in the area have only begun to address the issue of bycatch over the last decade. This timeframe is reflected in the scope and quantity of the available publications, as well as the progress of activities directed at mitigating this problem. All of the institutions that have been mentioned in this report have made the gathering of information regarding interaction between sea turtles and fisheries one of their top priorities. Some institutions are even developing working programs for monitoring fisheries and testing mitigation measures. Many of these institutions have managed to develop adequate relationships with fishermen, ship owners and administrators. Nevertheless, limited access to funding is an obstacle to the development and testing of mitigation measures. The SWA network, which is a very valuable instrument that was created in 2003, has allowed the region’s institutions and researchers to exchange information and share their experience, in addition to lending each other support in carrying out joint activities, thus strengthening sea turtle conservation efforts. The capacity demonstrated so far by the region’s researchers and institutions, testifies to their ability to continue to make progress in knowledge generation and tests of bycatch mitigation measures.
    Description: Published
    Keywords: Fisheries ; Ecology ; Fishing gear ; Fisheries ; Ecology ; Fishing gear
    Repository Name: AquaDocs
    Type: Book
    Format: 71 pp
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  • 16
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    Victoria: Seychelles Fishing Authority
    Publication Date: 2021-05-19
    Description: Seychelles is composed of over 100 islands with a land area of approximately 455 km², centred close to 4°30'S and 55°30'E. The combined coastline is approximately 600 km long, the oceanic shelf totals about 50 000 km² and the Exclusive Economic Zone (EEZ) is over 1 370 000 km². The total population (1994 census) stands at just under 74 000. in 1994, the population registered a growth rate of 2.2%. The GDP (1994) was SR 2373.8 million, fisheries representing 4.8% of this sum. Licensing agreements for foreign fishing activities provided a yearly revenue of SR8 million. Port Victoria is seen as a prime centre for tuna fishing operations in the Indian Ocean. In the artisanal fishery just under 900 persons are working. The largest contributor to catch by vessel type are the traditional whaler vessels representing 47.8% of the total catch. Over 66.3% of the catch is by the handline method. Carangidae representing 24% and Lutjanidae 19% of total landings. There are six specific objectives to the fisheries sector policy, which aims as resource development and maximisation of potential benefits. Nearshore fishery resources are considered to be heavily exploited, however opportunities exist around the distant islands and in deeper waters off the Mahe plateau shelf. Aquaculture of molluscs and prawns is being developed and carried out. The main constraints to development are seen as the lack of skilled manpower and foreign exchange.
    Description: Published
    Keywords: Country profile ; Fisheries ; Seychelles ; Statistics ; Fisheries ; Fishery statistics
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 17
    Publication Date: 2021-05-19
    Description: The present paper is based on a collation of information, through both a literature review and an internet search, on North American programs that involve some kind of scientific collaboration between fishers and fisheries scientists. It identifies four basic models of such collaboration and offers examples of collaborative activities that seem to fit into each of them. The first model defers to the expertise of the scientist for all major decisions and creates a strong programmatic distinction between what is science, and shall be done by scientists, and what are other, related activities that can be carried out by others. Various kinds of tagging programs, fisher advisory boards, at-sea research collaboration and many other activities fit this model. The second model, traditional ecological knowledge, recognizes that fishers have available to them a unique, local knowledge of the resource that can make a supplementary contribution to fisheries science. Several government, community and environmental groups are engaged in finding, recording and using this knowledge....
    Description: Unpublished
    Keywords: Mariculture ; Fisheries
    Repository Name: AquaDocs
    Type: Conference Material , Non-Refereed , Paper
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  • 18
    Publication Date: 2021-05-19
    Description: Durante las últimas décadas se ha observado un incremento de la captura (descartada y retenida) de condrictios en las pesquerías artesanales e industriales, conjuntamente con un rápido crecimiento de las pesquerías no reguladas, lo cual ha ocasionado una disminución en muchas poblaciones de este grupo de peces en todos los mares del mundo. La sobrepesca y los elevados niveles de mortalidad ocasionados por la captura incidental, asi como la degradación y contaminación de áreas costeras donde se ubican las zonas de alimentación, reproducción y cría para muchas especies de condrictios, han colocado a este grupo de peces en una situación difícil. Estos hechos, combinados con el bajo potencial reproductivo y la estrategia de vida de la mayoría de las especies de condríctios, no permiten una recuperación de las poblaciones, cuando las mismas se ven enfrentadas a períodos de sobreexplotación. En las aguas de Uruguay ocurren aproximadamente 100 especies de condrictios, muchas de las cuales son capturadas por diferentes pesquerias, tanto de forma incidental como dirigida. Debido a la preocupación a nivel internacional sobre la sustentabilidad de las pesquerías de tiburones, la FAO en 1998 realizó una consulta internacional a expertos y desarrolló un “Plan de Acción Internacional para la Conservación y el Manejo de los Tiburones” (PAI - Tiburones), el cual fue adoptado en 1999. El objetivo del PAI - Tiburones es asegurar la conservación, el manejo y el uso sustentable a largo plazo de los tiburones. Al hacer referencia a “tiburones”, se incluyen a todos los condrictios (tiburones, batoideos y quimeras). Este documento se divide en dos Capítulos y cuatro Anexos. El primer capítulo incluye los objetivos del PAN - Condrictios Uruguay y las medidas propuestas para alcanzar los mismos. El segundo capítulo contiene un diagnóstico general de los condrictios, las pesquerías y el marco jurídico. Como anexos se incluyen una lista de especies de condrictios citadas para Uruguay junto a su status en las listas rojas de la UICN, una reseña biológica de las especies consideradas prioritaras, una lista de abreviaturas, y listas de instituciones y personas que participaron de las reuniones desarrolladas durante el proceso de elaboración del PAN – Condrictios Uruguay. Las medidas propuestas por el PAN - Condrictios Uruguay se deberán aplicar a todas las pesquerías efectuadas por buques de bandera uruguaya, incluso los que operan fuera de la zona económica exclusiva de Uruguay.
    Description: Published
    Description: chondrichthyan, legal norm
    Keywords: M42 ; Fisheries ; Fisheries ; Conservation
    Repository Name: AquaDocs
    Type: Book
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  • 19
    Publication Date: 2021-05-19
    Description: La captura incidental en pesquerías comerciales ha sido identificada como una de las principales amenazas para la conservación de este grupo de aves, siendo los albatros (familia: Diomedeidae) y los petreles (familia: Procellariidae) las especies más afectadas. Debido a que los albatros y petreles presentan una gran longevidad y una baja fecundidad, pocas crías y un lento desarrollo, sus poblaciones son muy sensibles al aumento en la tasa de mortalidad causado por la captura incidental en las pesquerías. Anualmente son capturadas y muertas miles de aves marinas en las pesquerías comerciales que operan con diferentes configuraciones de palangre alrededor del mundo. Este arte, entre otras causas, está contribuyendo al descenso de varias poblaciones de albatros y preteles, configurando un claro riesgo de extinción de estas especies, si se permite que las tendencias actuales persistan. Las pesquerías de arrastre también interactúan con las aves marinas provocando la mortalidad de las mismas en un importante número. Otras pesquerías que capturan aves marinas son las que operan con redes de enmalle, redes de cerco y poteras. Respondiendo a la necesidad de reducir la mortalidad de aves marinas la Organización de las Naciones Unidas para la Agricultura y la Alimentación (FAO) desarrolló un Plan de Acción Internacional para Reducir la Captura Incidental de Aves Marinas en las Pesquerías de Palangre, el cual propicia la elaboración de Planes de Acción Nacionales en cada uno de sus países miembros. El objetivo del Plan de Acción Nacional – Aves Marinas de Uruguay es presentar un marco general que permita instrumentar medidas para la reducción de la captura incidental de aves marinas en todas las pesquerías de Uruguay.
    Description: Published
    Description: seabirds
    Keywords: M42 ; Fisheries ; Catching methods ; Fisheries
    Repository Name: AquaDocs
    Type: Book
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  • 20
    Publication Date: 2021-05-19
    Description: Este documento, dirigido al sector pesquero, investigadores, conservacionistas y administradores de las pesquerías, surge como respuesta de investigadores pertenecientes al Grupo de Especialistas en Investigación y Conservación de Tortugas Marinas en el Atlántico Sud Occidental (ASO) a la urgente necesidad de evaluar el impacto de las pesquerías sobre las tortugas marinas. Históricamente, los esfuerzos referidos a la conservación de las tortugas marinas se han dirigido casi exclusivamente a proteger las playas de anidación. Sin embargo en la última década se ha podido comprobar que una de las mayores amenazas es la mortalidad incidental causada por las pesquerías. Esta interacción no implica únicamente un problema para las tortugas, sino que también genera pérdidas económicas para los pescadores y las empresas.
    Description: This document, which is directed at the fishing sector, researchers, conservationists and fishery administrators, was developed by researchers who are members of the Specialists Group for Marine Turtle Research and Conservation in the Southwestern Atlantic Ocean (SWA) in response to the urgent need to evaluate the impact generated on sea turtles by fisheries. Historically, sea turtle conservation efforts have focused almost exclusively on the protection of nesting beaches. Nevertheless, over the last decade, research has proved incidental mortality as a result of fishing activities to be one of the greatest threats to these animals. This type of interaction is not only problematic for turtles, but also generates financial losses for fishermen and businesses.
    Description: Cont. fotografías
    Description: Published
    Description: Sea Turtle, keeping
    Keywords: Fisheries ; Ecology ; Fishing gear ; Fisheries ; Ecology ; Fishing gear
    Repository Name: AquaDocs
    Type: Book
    Format: 71
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  • 21
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    UNEP; Regional Activity Centre for Specially Protected Areas (RAC/SPA)
    Publication Date: 2021-05-19
    Description: At present, the impact of accidental catch on sea turtle populations is one of the most urgent problems that must be solved to ensure the survival of all these species worldwide. In the Mediterranean, too, all marine turtle species are affected by fishing activities, in particular the loggerhead (Caretta caretta) and the green (Chelonia mydas) turtles, which are more common than the others and are the only ones breeding in this sea. Since the Mediterranean populations of both species seem to be genetically isolated from the Atlantic ones (Bowen et al., 1992; Bowen et al., 1993; Laurent et al., 1993), fishing-induced mortality probably cannot be counterbalanced by immigration. This implies that the survival of the Mediterranean populations of these species depends to a great extent on the conservation effort that the Mediterranean countries carry on in the near future to reduce accidental mortality.
    Description: Unpublished
    Keywords: Marine turtles ; Fisheries
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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  • 22
    Publication Date: 2021-05-19
    Description: El presente trabajo llama la atención a las recientes epidemias de intoxicación histamínicas reportadas en los Estados Unidos, debido al consumo del dorado (Coryphaena hippurus) o Mahi-Mah, contaminado. Esto dió como resultado la prohición de las importaciones de esta especie, proveniente de varios países entre ellos el Ecuador, y siendo el dorado una especie de relativa importancia económica en este país, dicha prohibición ha preocupado al sector pesquero. Los estudios llevados a cabo muestran claramente la susceptibilidad de esta especie a desarrollar histamina. Esto se debe principalmente a la temperatura a la que está expuesta, pues la demora antes de enhielar el pescado es la etapa crítica. Los resultados muestran un aumento exponencial de los niveles de histamina, en ciertos casos después de tan solo 9 horas de almacenaje a temperaturas ambientales entre 25-30°C. Los niveles de histamina en pescado muestreado en el mercado local fueron tan altos como 250 mg/100g de muestra. Se demuestra que el problema se debe fundamentalmente al mal manejo de la captura por parte de la flota artesanal, y la subsecuente falta de infraestructura adecuada para conservarla, es decir, no se enfría el pescado. Sin embargo, el estudio muestra que una reducción de la temperatura del pescado de solo 15° menos, podría dar como resultado un producto de mayor calidad. En el presente trabajo se hacen recomendaciones para establecer un nivel máximo permitido para la exportación de 10 mg%, y se comparan dos métodos rápidos de análisis.
    Description: Published
    Keywords: Fisheries ; Histamines ; Quality control ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 23
    Publication Date: 2021-05-19
    Description: 153 experimental sets were made with stackable Antillean fish traps in depths of 5 to 30 m in the waters around the Galápagos Island (Ecuador), between Octobre and April 1983. 1,885 fish were caught of 18 species mainly of the families Pomadasyidae, Acanthuridae, Sparidae and Serranidae. The mean catch rate was 5,5 Kg per lift or 0,4 Kg.h-1, and the mean weight of the fish caught was 0,45 Kg. The optimum set duration was found to be between 2 and 18 hours (possibly indicating a high rate of escape). This study took place during the period of the ”El Niño”, when catches of fish in this area generally were low, and it is not known what effect this had. The catches were good compared with other shallow areas, but the fishes caught were mainly of medium quality. It is thought that significant increases in the quantity and quality of the catch could be obtained with commercial traps in deeper areas, but the efficient use of these would require new vessels and equipment, and the resulting increase in fishing effort could lead to overfishing of the most acceptable species of reef fish. Hence the development of fishery using fish traps is not recommended for Galápagos. A study of the biology of the fish caught was carried out. A bibliography of references on fish traps and their use was compiled and is included.
    Description: Published
    Keywords: Fisheries ; Trap fishing ; Fisheries ; Catch statistics ; Trap fishing
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    Type: Journal Contribution
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  • 24
    Publication Date: 2021-05-19
    Description: The coastal waters of West Africa are among the world's richest fishing grounds ... for the time being. Droughts have ravaged the hinterland and as a result people have steadily moved towards the shores of Senegal and Mauritania. At the same time the international fishing industry seems intent on exploiting West African waters to a greater and greater extent. Nicolien Zuijdgeest and photographer Bas Beentjes visited the region and found that the sustainability of fisheries is being seriously threatened.
    Description: Published
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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  • 25
    Publication Date: 2021-05-19
    Description: Le Gabon est situé en Afrique centrale avec une façade atlantique . Il est limité au Nord par le Cameroun, au Nord-ouest par la Guinée Equatoriale, à l’Est et au Sud par le Congo. La zone économique exclusive (ZEE) a une surface de 213.000 Km². elle est plus vaste que celle de Sao-Tomé et Principé, pays insulaire voisin (160.000 Km²). La façade maritime à une longueur de 750 Km , de Coccobeach à Ndindi. La largeur moyenne du plateau continental est de 60 Km, soit une surface à peu-près de 40.600 Km² de la côte à l’isobathe de 200 mètres. Ce plateau se termine par un talus peu abrupt, d’une longueur de 750 Km et d’une superficie de 11.200 Km² entre 200 et 800 mètres de profondeur....
    Description: Unpublished
    Keywords: Biodiversity ; Environments ; Fisheries
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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  • 26
    Publication Date: 2021-05-19
    Description: In 1997, IUCN-The World Conservation Union, with the financial support of the German Federal Ministry for Economic Co-operation and Development, initiated a project to examine the relationship between the Convention on Biological Diversity (CBD) and the rules of international trade–those administered by the World Trade Organisation (WTO), in particular. The project was motivated by a widely shared concern that the aims of the CBD, which are essentially to conserve and equitably distribute the benefits of the environment, might be undermined by the WTO, which aims at the liberalisation of trade. Liberalised trade has the potential to integrate economies, regionally and globally, in mutually beneficial ways. But some observers are concerned that it may do so at a cost of impairing the environment and amplifying disparities in wealth, much of which, in poorer nations, is disproportionately represented in endowments of natural resources. Other commentators have claimed to locate synergistic potential, suggesting, for example, that trade law’s anti-subsidy disciplines might be conscripted into the campaign against environmental abuses such as overfishing.
    Keywords: Biodiversity ; International trade ; Fisheries
    Repository Name: AquaDocs
    Type: Conference Material , Non-Refereed , Paper
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  • 27
    Publication Date: 2021-05-19
    Description: This synopsis describes the development of marine biological research, including fisheries, in Mozambique. With around 3000 km of coastline, the living resources of the sea playa major role in the Mozambican society, mainly as a source of protein and income for the population, and of foreign revenue through exports. In the first years, after independence, in 1975, research activities in marine sciences were limited and mainly concentrated to fisheries through cooperation with Norway and the Soviet Union. A new era for biology started in 1985 when the Faculty of Biology at Universidade Eduardo Mondlane was re-opened. A 5yr curriculum towards a licentiate degree was introduced with a strong marine profile. Since the 1990s, a very dynamic de-velopment in Mozambican marine biological research has occurred. Several academic degrees in marine biology from universities abroad were obtained, and local expertise developed; building vital institutions and enrolling in advanced research activities.
    Description: Published
    Keywords: Marine biology ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 28
    Publication Date: 2021-05-19
    Description: The trophic relations of two apex predators, yellowfin and bigeye tuna (Thunnus albacares and T. obesus), and their prey were investigated in the western tropical Indian Ocean. The contents of 173 non-empty stomachs were analysed from specimens caught with longlines and purse seine during scientific and fishing cruises. Diet data were processed by occurrence, by number, and by wet weight and a comparison of diets between surface and deep swimmers made. Crustaceans were the almost exclusive food source of surface-swimming bigeye tuna, with the stomatopod (Natosquilla investigatoris) being the sole prey item recorded in this category. The diet of deep-swimming yellowfin tuna was balanced between epipelagic fish, crustaceans and cephalopods. Bigeye tuna fed predominantly on cephalopods and mesopelagic fish (Scopelarchidae and Paralepididae), for which this predator appeared to be the most active chaser. The diet of the two predators reflects their ability to catch the prey, and their vertical distribution.
    Description: Published
    Description: Natosquilla investigatoris; Thunnus albacares; T. obesus; Feeding ecology; Vertical habitat
    Keywords: Tuna ; Fisheries ; Diets ; Tuna fisheries ; Analysis
    Repository Name: AquaDocs
    Type: Journal Contribution , Non-Refereed , Article
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  • 29
    Publication Date: 2021-05-19
    Description: Greater ecosystem complexity is recognized by studying a two species predator-prey model under two property rights regimes: free entry and a system such as individual quotas which execute an economically optimal solution. A bottom-up management experiment is discussed in the context of Lake Victoria fisheries.
    Description: Published
    Keywords: Predators ; Resource management ; Fisheries ; Freshwater fish ; Predators ; Resource management
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 71093 bytes
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  • 30
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    Western Indian Ocean Marine Science Association
    Publication Date: 2021-05-19
    Description: This paper examines the arrival of a new group of fishermen on the Kenyan coast and what this has meant for the state of fishery resources. It reviews four subject areas: access and the number of fishermen; the fishermen’s identity; the choice of fishing gear; and the fishing grounds selected. Data were collected from a small number of fishing households in the villages of Uyombo and Takaungu in Kilifi District, using mainly qualitative research methods. Local households on the Kenyan coast face increasing pressure on land as well as on marine resources. The declining economic situation and greater pressure on land have made people turn to fishing as an income-generating activity. This group of fishermen is referred to as the ‘new’ generation of fishermen as they have been involved in fishing for only one or two generations (including the current one) in contrast to the ‘old’ generation from families who have been fishing or in fishingrelated activities for much longer. The old generation of fishermen and their households have also diversified their incomes, with many fishing households turning to farming, for example, with women and grown-up children involved in various activities. The new generation of fishermen, mainly of the Mijikenda population group, has often been blamed for the loss of traditional access regulations and for using harmful fishing gear. This paper discusses the new generation of fishermen and their identity as they perceive it and relates this to employment generation as a policy measure for marine conservation.
    Description: Published
    Description: Artisanal fisheries;household survey; income diversification; marine conservation,
    Keywords: Fisheries ; Fishery resources ; Fisheries ; Fishery resources
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  • 31
    Publication Date: 2021-05-19
    Description: Cette rencontre entre dans le cadre du programme conjoint de recherche sur les crustacés entre l’IMROP et l’IEO (Espagne)
    Description: Published
    Keywords: Captures ; Effort de pêche ; Length distribution ; Fishing effort ; CPUE ; Débarquement ; Landing ; Pêcheries ; Mauritanie ; Fisheries ; Accords de pêche ; UE ; Mauritania ; Crevettes ; Shrimps ; EU ; Distribution de taille ; Fishing fleet ; Fishing agreements ; Flottille de pêche ; Catches ; Crustacean fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 32
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    International Centre for Trade and Sustainable Development (ICTSD) and IUCN-The World Conservation Union
    Publication Date: 2021-05-19
    Description: The Fisheries, International Trade, and Sustainable Development programme aims to inject both the sustainable development and natural resource management perspectives into the debate on trade and fisheries. The ultimate objective of the programme is to make international trade in fisheries supportive of sustainable development. The programme's main activity will be to convene a series of policy dialogues on fisheries, international trade, and sustainable development which will link processes and actors, and bring together all the different stakeholders' perspectives. Initially the programme aims to facilitate a process in which each stakeholder can move beyond the constraints inherent in his or her position, to enable all participants to step back from particular debates and stand-offs regarding fisheries, trade, and sustainable development-related issues such as subsidies, ecolabelling, or conservation measures. The dialogues, research, and information exchange process will seek to build common understanding and a baseline of shared information, and pave the way for participating stakeholders to seek solutions compatible with the aims of sustainable development by exploring ways to improve resource management while safeguarding the livelihoods of those who depend on fisheries, and ensuring economic growth for developing countries.
    Description: International Centre for Trade and Sustainable Development, IUCN — The World Conservation Union Publications Service Unit
    Description: Published
    Keywords: Sustainable development ; Fisheries ; International trade
    Repository Name: AquaDocs
    Type: Book Section , Non-Refereed
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  • 33
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    Alexandria: National Institute of Oceanography and Fisheries
    Publication Date: 2021-05-19
    Description: This journal is published by the NIOF, Egypt
    Description: Lake Manzalah; the largest delta Lake in Egypt represents a dynamic system that has been undergoing continuous and pronounced changes since long times. In the last year’s this Lake faced drastic problems that retarded its environmental and fisheries development; the most serious one is the discharge of waste water. It is attempted in the present study to investigate the chemical characters of Lake Manzalah water during 2001-2002. Water temperature ranged from an average of 12.35oC in January and 29.14oC in July. Dissolved Oxygen, pH and total dissolved solids were found in ranges optimum for the living of marine and freshwater fish species. The average concentrations of nutrients lied in the following ranges: 1.24 to 4.89 μmol PO4 -3 l-1 , 5.08 to 28.73 μmol SiO4 -2 l-1 and 1.81 to 17.7 μ_mol NO3-1 l-1 The concentrations of phosphorus and nitrogen compounds were found to be relatively higher at the southern regions of the Lake near to the outlets of the drains.
    Description: NIOF
    Description: Published
    Keywords: Hydrography ; Water ; Chemistry ; Chemical composition ; Water content ; Environment ; Chemical composition ; Environments ; Water content ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 34
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    Accra : Marine Fisheries Research Division
    Publication Date: 2021-05-19
    Description: Ministry of Food and Agriculture
    Description: Directorate of Fisheries
    Description: Published
    Description: Exploitation, Upwelling, Pelagic species, Demersal species, Atlantic Ocean
    Keywords: Fishery policy ; Marine environment ; Fisheries ; Exploitation
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 35
    Publication Date: 2021-05-19
    Description: This paper models the effect of changes in wetlands yields within the freshwater fishery of (the Kenyan segment) of Lake Victoria. Specifically, it models the nutrient retention function of wetlands as a buffer against fertilizer run-off from agriculture, and the impact of nutrient loading on the fishery. Run-off from the watershed is among the major causes of eutrophication in the lake, along with atmospheric deposition and sewage and other organic discharges from domestic and industrial activities. The ecological component of the model captures the interactions between phosphorus loading, wetland area, water quality and fish stocks. Chlorophyll-a concentration is used as a proxy for phytoplankton density, and as a measure of nutrient enrichment. The impact of this on fish stocks is then estimated using using Ecopath. The economic component of the model then evaluates the effect of changes in stocks on performance in the fishery, given the regulatory regime in Kenya. We use the results to obtain an estimate of the value of the nutrient retention function of wetlands on the margins of the lake.
    Description: Published
    Keywords: Valuation of ecosystem services ; Ecological-economic interactions ; Fisheries ; Eutrophication ; Fishery resources ; Ecosystems ; Fishery resources ; Wetlands
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 36
    Publication Date: 2021-05-19
    Description: The marine fisheries production from African coastal countries, combined with that of freshwater production of the continent is estimated to be 6 millions metric tons, corresponding only 5 % of the total world production. Africa's contribution to fisheries products (1,5 %) is insignificant compared to that of world commerce which is around 44 millions tons. This deplorable situation is due to a certain number of problems which include s among others, the relative biogenic poverty of African waters, the exploitation of African waters by foreign vessels, the total lack of catches effected by the African vessels out of their regional boundaries, the lack of knowledge on the mastering of commercialisation and on veritable commercial politics of fisheries products, including quality assurance. In addition to this, the almost inexistence of the aquaculture in the sub-Saharan countries. This paper analyses the African fisheries in the whole continent and presents the general characters, notably its evolution, fisheries resources, valorisation and consumption of fisheries products. The global analysis made here accords a priority to markets as well as to the framework of contribution of these products and tries, at the end of the 20th century, to present some trends. Facing the globalisation phenomena, how will African fisheries producers be challenged in the new millennium? This continental level analysis brings out field application and some different development perspectives for both small scale and industrial fisheries sub-sectors.
    Description: Published
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Proceedings Paper , Non-Refereed
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  • 37
    Publication Date: 2021-05-19
    Description: Over the past decade, exports of fish and fishery products from developing countries have increased rapidly. However, one of the major challenges facing developing countries in seeking to maintain and expand their share of global markets is stricter food safety requirements in industrial countries. Kenyan exports of Nile perch to the European Union provide a notable example of efforts to comply with such requirements, overlaid with the necessity to overcome restrictions on trade relating to immediate food safety concerns. Although food safety requirements were evolving in their major markets, most notably the EU, most Kenyan exporters had made little attempt to upgrade their hygiene standards. Likewise, the legislative framework of food safety controls and facilities at landing sites remained largely unchanged. Both exporters and the Kenyan government were forced to take action when a series of restrictions were applied to exports by the EU over the period 1997 to 2000. Processors responded by upgrading their hygiene controls, although a number of facilities closed, reflecting significant costs of compliance within the context of excess capacity in the sector. Remaining facilities upgraded their hygiene controls and made efforts to diversify their export base away from the EU. Legislation and control mechanisms were also enhanced. Hygiene facilities at landing beaches were improved, but remain the major area of weakness. The Kenyan case illustrates the significant impact that stricter food safety requirements can have on export-oriented supply chains. It also demonstrates how such requirements can exacerbate existing pressures for restructuring and reform, while prevailing supply and capacity issues constrain the manner in which the supply chain is able to respond. In Kenya most of the concerted effort to comply with these requirements was stimulated by the sudden loss of market access in very much a “crisis management” mode of operation, illustrating the importance of responding to emerging food safety requirements in a proactive and effective manner. This paper - a product of the International Trade Department, Poverty Reduction and Economic Management Network - is part of a larger effort in the network to understand the challenges and opportunities facing developing countries associated with evolving international standards for food and other products.
    Description: Published
    Keywords: Development economics ; Private sector ; Public Policy Fishing Industry ; Environmental economics & policies ; Fisheries ; Agricultural Knowledge & Information Systems ; Agribusiness & Markets ; Coastal and marine resources ; Fishery management ; Fishery products ; Fishery resources ; Food availability ; Aquaculture development ; Aquaculture economics ; Fishery economics ; Fishery management ; Fishery products ; Food availability
    Repository Name: AquaDocs
    Type: Working Paper , Non-Refereed
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  • 38
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    Programme Gestion Intégrée des Ressources Marines et Côtières, Dakar (Senegal)
    Publication Date: 2021-05-19
    Description: Du 1er au 25 octobre 2006, une enquête auprés des pêcheurs du fleuve Sénégal a été conduite afin de recueillir des informations sur les populations de lamantins notamment entre Podor et Bakel. entre autres résultats, la mission a pu rencontré beaucoup de communautés de pêcheurs et observé le Trichechus senegalensis (nom scientifique de l'espéce). Nous reproduisons quasiment in extenso la note de synthèse que le Chef de mission a bien voulu mettre à la disposition des lecteurs de DIISO
    Description: Published
    Description: lamantin; Trichechus senegalensis
    Keywords: Fisheries ; Surveys ; Surveys ; Fisheries
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 39
    Publication Date: 2021-05-19
    Description: FAO, Rome (Italie);Ministère du Développement et de l'Hydraulique, Dakar (Sénégal)
    Description: Published
    Description: Plan de développement; fôret; pêche; milieu continental; aquaculture; pisciculture ; bilan ; facteur climatique; facteur hydrologique ; facteur socio économique; population rurale; ressources naturelles; poisson d'eau douce; ressources naturelles; gestion de l'environnement; technique de pêche; commercialisation ; consommation; projet de développement
    Keywords: Natural resources ; Fisheries ; Aquaculture ; Marketing ; Development projects ; Forests ; Climatic data ; Hydrology ; Inland water environment ; Aquatic environment ; Development potential ; Fisheries ; Aquaculture ; Marketing ; Development projects ; Fish consumption ; Hydrology ; Inland water environment ; Aquatic environment ; Forests ; Socioeconomic aspects ; Climatic data ; Natural resources ; Freshwater
    Repository Name: AquaDocs
    Type: Book
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  • 40
    Publication Date: 2021-05-19
    Description: Supported by IOC/IODE
    Description: Document available in English
    Description: ASFA
    Keywords: Fisheries ; Aquatic sciences ; Fisheries ; Abstracts
    Repository Name: AquaDocs
    Format: 15
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  • 41
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    Publication Date: 2021-01-30
    Description: Ministère de l'économie et des Finances
    Description: Published
    Description: Pêche artisanale, pêche industrielle,pêche maritime,pêche sardinière, produits halieutiques,Transformation,
    Keywords: Fisheries ; Fishery products ; Marine fish ; Fisheries ; Artisanal fishing ; Fishery products
    Repository Name: AquaDocs
    Type: Journal Contribution
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  • 42
    Publication Date: 2021-01-30
    Description: pêcherie; gestion des ressources; cymbium; poulpe; crevette
    Keywords: Fisheries ; Fishery management ; Biodiversity ; Fishery resources ; Biodiversity ; Fisheries ; Fishery management ; Fishery resources ; Bait fishing
    Repository Name: AquaDocs
    Type: Working Paper
    Format: 2371081 bytes
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  • 43
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    MGAP | DINARA
    Publication Date: 2021-01-30
    Description: A partir de la firma del Proyecto de Gestión Pesquera DINARA-FAO (UTF/URU/025/URU), en septiembre de 2007, se comenzó a conformar una Unidad de Economía Pesquera. Sus objetivos se focalizaron en fortalecer la capacidad de recolección y análisis estadístico de la información socio-económica del sector. En el 2008 esta Unidad compiló y realizó un análisis de la información comprendida entre los años 2002 y 2007, reanudando luego de varios años esta publicación histórica. La misma fue un éxito en todo sentido, especialmente para consulta de los diferentes actores del sector. La aceptación y receptividad que ha tenido dicha publicación nos motiva y obliga a continuar en esta línea, rumbo a la obtención de un producto de valor y utilidad, basado exclusivamente en información oficial nacional. Este año retomamos la serie anual poniendo nuevamente a disposición de todos información actualizada, completa y de calidad que estamos seguros será nuevamente de gran beneficio para el sector público como privado, así como de interés para el público en general.
    Description: Published
    Keywords: Fisheries ; Trade ; Fishery statistics ; Fisheries ; Trade
    Repository Name: AquaDocs
    Type: Book
    Format: 48
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  • 44
    Publication Date: 2021-01-30
    Description: Dr Sebek introduced the ACOPS report which sums up the activities undertaken since the last Preparatory Committee meeting all of which are detailed in Annex V. In particular, Dr Sebek said that several strategic partnerships were being forged in order that certain components of the work programme, as agreed at the First Preparatory Committee Meeting in Nairobi in February, could start as soon as possible. A good example of such a policy, in the field of root cause analyses was the anticipated co-operation with UNESCO.
    Description: Published
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 45
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    Publication Date: 2021-01-30
    Description: This document presents the Senegalese maritime fishing statistics in 2005 with the catch from the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish product and processed products. The document also shows fisheries statistics by marine areas.
    Description: Ministère de l'Economie Maritime, Direction des Pêches Maritimes, Dakar (Sénégal)
    Description: Published
    Description: statistique, pêche artisanale, pêche industrielle, commercialisation, pêche maritime, pêche par espéce
    Keywords: Demersal fisheries ; Fisheries ; Marine fisheries ; Pelagic fisheries ; Commercial fishing ; Artisanal fishing ; Cephalopod fisheries ; Demersal fisheries ; Fisheries ; Fishery statistics ; Fishing vessels statistics ; Marine fisheries ; Mollusc fisheries ; Pelagic fisheries ; Shrimp fisheries
    Repository Name: AquaDocs
    Type: Report
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  • 46
    Publication Date: 2021-01-30
    Description: Le domaine maritime sénégalais s’étend de 18°00 N, -20°00 W, -16°30 E, 12°15 S ; la presqu’île du Cap-Vert située entre 14°30 N et 15°00 N le divise en deux zones aux caractéristiques topographiques distinctes. Au nord, le plateau continental est peu étendu vers le large et orienté Nord-Nord/Est. Au sud de la presqu’île, le plateau s’élargit et le talus continental est orienté nord-sud. L’embouchure du fleuve Sénégal au Sénégal au Nord de la presqu’île du Cap-Vert et celles de la Gambie et de la Casamance au Sud constituent également un trait marquant de cette région. Les travaux réalisés au Sénégal en océanographie ont montré : - l’existence de deux saisons marines aux caractéristiques très différentes qui se succèdent : une saison chaude de juillet à octobre et une saison froide de décembre à mai. Ces deux saisons sont séparées par des périodes de transition. Pendant la saison froide, les alizés (vent de secteur nord-ouest à nord-est) s’établissent et engendrent à la côte une résurgence d’eau profonde (upwelling) vers la surface ; - la mise en évidence de systèmes de grands courants aux caractéristiques différentes : le courant des Canaries et le contre courant équatorial ; - la description de trois grandes houles au large du Sénégal : o la houle de Nord-Nord ouest qui a lieu toute l’année o la houle de Sud-Sud ouest apparaissant pendant l’hivernage o la houle d’ouest possible aux environs du mois de novembre. Le littoral sénégalais représente une zone d’intérêt stratégique à la fois sur le plan démographique, économique et environnemental. Les milieux naturels, dans un état de conservation relativement préservé, produisent des ressources vitales pour les 11 millions d’habitants peuplant le Sénégal. L’économie nationale sénégalaise est très dépendante de ces ressources côtières et marines qui constituent les principales recettes en devises, qu’il s’agisse de pêche ou de tourisme. L’analyse de la situation et des tendances montre que la zone côtière fait l’objet de pressions diversifiées et de plus en plus lourdes. Ces pressions se traduisent souvent par des conflits d’intérêts entre les différents secteurs et par des impacts qui génèrent une dégradation de l’environnement et des conditions de vie des populations. Cette évolution risque ainsi de compromettre les potentialités de développement offertes par les 700 Km de littoral sénégalais. La pression démographique se développe préférentiellement sur la zone côtière qui accueille déjà près de 60% des habitants, notamment dans les centres urbains et les capitale, toutes situées en bord de mer, et qui continuent à recevoir des populations en provenance de l’intérieur, réfugiés climatiques ou économiques, ou simplement jeunesse attirée par les « lumières de la ville ». Cet exode, à l’origine de dysfonctionnements des systèmes de production ruraux qui manquent peu à peu de main d’oeuvre, contribue à son tour à générer des perturbations au niveau des centres urbains où la misère se substitue parfois à la pauvreté.
    Description: Les besoins en matériaux de construction consécutifs à cette évolution démographique entraînent des prélèvements massifs de sable sur les plages qui ont à leur tour des conséquences négatives sur l’érosion et la protection du littoral. La fragilisation des cordons dunaires augmente ainsi les risques d’inondations des terres, la ville de Saint Louis étant particulièrement vulnérable à cet égard. Les besoins en développement ont conduit à la réalisation d’infrastructures le long du littoral. Ces constructions, qui tiennent trop rarement compte des contraintes environnementales, ont entraîné des répercussions structurelles sur l’équilibre de la zone côtière. Ainsi, les barrages anti-sel, tel le barrage de Diama sur le fleuve Sénégal, ont entraîné des répercussions sur le fonctionnement de certains écosystèmes côtiers. En condamnant les influences des apports d’eau douce ils appauvrissent les milieux situés en aval, stérilisant peu à peu des zones riches en ressources ainsi que les économies et les cultures qui en dépendent. Le ralentissement des courants et la baisse de salinité en amont du barrage favorisent l’apparition de certaines plantes envahissantes, telles que la bilharziose ou le paludisme. Les effectifs de poissons dépendant de milieux à salinité variable sont directement affectés, expliquant par exemple une chute de près de 70% des captures dans le bas delta du Sénégal. Les besoins du développement se traduisent également par l’amélioration ou la création d’axes routiers qui, dans la majorité des cas, longent la zone côtière. Ces ouvrages entraînent des impacts directs sur l’environnement, tels la destruction des mangroves là où les routes barrent l’écoulement des marées (exemple de la route Samba Dia – Djifère. Les systèmes de production traditionnels sont en règle générale peu préparés à faire face à des circuits de commercialisation organisés à une échelle régionale ou internationale, où à des technologies plus performantes, et éprouvent des difficultés à maintenir un contrôle sur leur terroir. Faute de pouvoir opérer une métamorphose rapide de leur système de production, le risque existe de voir peu à peu disparaître des savoir-faire d’une grande valeur dans la gestion même de ces territoires et de leurs ressources et , plus généralement, des cultures qui leur sont associées. Le développement industriel exerce des impacts potentiels ou réels de grande magnitude sur la zone côtière et marine. Les secteurs les plus significatifs à cet égard sont le tourisme et les hydrocarbures. Concernant le premier, les infrastructures, principalement orientées vers le tourisme balnéaire, sont en grande majorité installées à proximité directe de la zone côtière. L’absence quasi généralisée d’études d’impacts approfondies et indépendantes a conduit à de nombreux échecs. Ainsi, la plupart des projets ont été pensés et réalisés sans tenir suffisamment compte des contextes socio-économiques, culturels et environnementaux dans lesquels ils s’insèrent. Certaines réalisations ont été planifiées sur des secteurs soumis à une forte érosion littorale, compromettant de façon irrémédiable non seulement les investissements mais l’utilisation ultérieure du site, comme cela s’est produit sur les plages au sud immédiat du Cap Skirring. Les questions relatives à la disponibilité en eau douce qui se posent de façon cruciale dans le Saloum par exemple, à la gestion des déchets et des eaux usées ne sont que rarement prises en considération de façon structurelle et durable, conduisant à la dégradation de l’environnement ou à des conflits avec les communautés locales qui nuisent à la qualité même du tourisme. L’exploration et l’exploitation des ressources en hydrocarbures représentent aussi un secteur d’intérêt stratégique avec une généralisation des prospections. Si la découverte de gisement d’intérêt commercial représente une opportunité majeure pour l’économie nationale, elle soulève néanmoins un certain nombre de questions au regard de l’environnement. En effet les des puits. Parmi ces risques nous pouvons citer les impacts des études sismiques sur les organismes marins, notamment poissons et cétacés, le rejet de fluides toxiques et déblais de forage, le déversement des eaux de production et les pollutions aiguës dues à des accidents intervenant pendant le forage, le stockage ou le transport. Le Sénégal en ce moment, en est au stade de la prospection. Toutefois, pour ce qui concerne le transport d’hydrocarbures, plus de 90 000 0000 de tonnes d’hydrocarbures transitent par les côtes sénégalaises. Les modèles de dérive des nappes élaborés par la Compagnie pétrolière Woodside en relation avec le champ de Chinguetti, actuellement en cours de production au large de la Mauritanie, montrent des probabilités d’impact sur les côtes allant du golfe d’Arguin jusqu’à Dakar, en cas d’accident. La surexploitation des ressources halieutiques constitue également un problème au niveau de l’environnement marin et côtier. En effet, si une partie de la fluctuation des biomasses peut s’expliquer par les changements du régime des upwellings, la baisse des captures s’explique par un effort de pêche excessif, que ce soit dans le sous-secteur industriel ou artisanal. A cette surcapacité vient s’ajouter la présence de flottes illicites non déclarées et non réglementées. L’utilisation de certains engins ou pratiques de pêche contribue à aggraver la situation : la pêche crevettière est à l’origine de prises accidentelles qui représentent jusqu’à 85 % du total des captures, incluant des espèces protégées comme les tortues marines, et qui sont rejetés à la mer . Les chaluts de fonds, qui vont pêcher jusqu’à 800 m de profondeur, ainsi que les dragues à coquillages entraînant des dégâts structurels sur les écosystèmes De plus l’influence des marchés à l’exportation exerce des pressions sélectives sur certaines espèces, les espèces démersales de poissons, céphalopodes étant les plus recherchées sur le marché. Les changements climatiques ont également des impacts négatifs sur l’environnement marin et côtier. On sait que l’élévation du niveau marin aura des répercussions directes sur les installations humaines littorales ainsi que sur les écosystèmes insulaires et côtiers. Des zones de mangroves entières qui ne disposent pas des conditions écologiques pour s’adapter peuvent disparaître, entraînant des risques accrus d’érosion et d’inondation. Ces mêmes risques se multiplient avec la fréquence accrue des épisodes météorologiques exceptionnels tels que les ondes de tempêtes capables de drosser les pirogues à la côte ou de provoquer la rupture de cordons dunaires. On sait par ailleurs que le réchauffement de la température des mers influe négativement sur la productivité des océans et la dynamique des courants tels que le courant profond originaire de l’antarctique et qui exporte vers le Sénégal et les autres pays de la sousrégion des sels nutritifs présents dans les upwellings. On observe également une diminution de la puissance des alizés qui pourrait avoir des répercussions directes sur la force des upwellings et donc sur la productivité des pêcheries et du milieu marin en général. La stratégie de réponse proposée combine une protection des zones côtières importantes et un reboisement des dunes littorales dans les secteurs de la côte nord et de la Flèche de Sangomar particulièrement menacés. L’évaluation économique de cette stratégie montre qu’elle est coûteuse mais nettement en deçà de la valeur économique des terres qu’elle sera amenée à protéger. Des efforts complémentaires devront cependant être faits pour évaluer le coût d’autres solutions de protection telles que le nourissement artificiel des plages. Par ailleurs, la stratégie envisagée ne répondant qu’à l’un des impacts des changements climatiques, à savoir les inondations, toute une série de mesures dites d’accompagnement ont été suggérées qui visent à diminuer la vulnérabilité en gérant mieux les ressources présentes dans la zone côtière, en développant les techniques de récupération des sols salés et en prenant des mesures législatives et institutionnelles appropriées. Enfin, il est très important de souligner que ces différentes mesures ne devraient être envisagées que dans un cadre plus global de gestion intégrée des zones côtières, seul à même d’assurer la participation de l’ensemble des acteurs concernés, l’éducation, la recherche et l’information environnementales mais aussi la cohérences et le suivi des mesures.
    Description: Ministère de l'Environnement, de la Protection de la Nature, des Bassins de Rétention et des Lacs Artificiels, Dakar (Sénégal)
    Description: Published
    Description: écosystéme marin; technique de pêche; filet; érosion côtière; pollution; pêche; flore; environnement; migration; pêcheur; oiseau d'eau; tortue marine; lamantin; requin; mammifére marin; réglementation; mangrove; écosystème; estuaire; delta
    Keywords: Deltas ; Ecosystems ; Marine environment ; Aquatic birds ; Fishermen ; Fisheries ; Mangroves ; Coastal erosion ; Flora ; Fishing nets ; Deltas ; Ecosystems ; Mangroves ; Coastal erosion ; Marine environment ; Marine mammals ; Shark fisheries ; Turtle fisheries ; Aquatic birds ; Fishermen ; Migrations ; Flora ; Fisheries ; Marine pollution ; Fishing nets ; Climatic changes
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 1456859 bytes
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    Format: 71
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  • 47
    Publication Date: 2021-01-30
    Description: Published
    Description: pêche par espéce; crustacé
    Keywords: Fisheries ; Artisanal fishing ; Capture fishery economics ; Fisheries ; Fishery statistics
    Repository Name: AquaDocs
    Type: Report
    Format: 1546887 bytes
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    Format: 122
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  • 48
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    FAO
    Publication Date: 2021-01-30
    Description: Published
    Description: Eritrea
    Keywords: Fisheries
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
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  • 49
    Publication Date: 2021-01-30
    Description: Published
    Description: pêche artisanale; pêche industrielle; pêche par espéce
    Keywords: Fishery oceanography ; Fisheries ; Fishery economics ; Fishery statistics ; Fishery oceanography ; Commercial fishing ; Artisanal fishing ; Fish catch statistics ; Fisheries
    Repository Name: AquaDocs
    Type: Report
    Format: 792055 bytes
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    Format: 129 pp
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  • 50
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    Publication Date: 2021-01-30
    Description: This document presents the Senegalese maritime fishing statistics in 2004 with the catch from the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish product and processed products. The document also shows fisheries statistics by marine areas.
    Description: Ministère de l'Economie Maritime et des Transports Maritimes Internationaux, Direction des Pêches Maritimes, Dakar (Sénégal)
    Description: Published
    Description: statistique, pêche artisanale, pêche industrielle, commercialisation, pêche maritime, pêche par espéce
    Keywords: Fisheries ; Demersal fisheries ; Marine fisheries ; Marine resources ; Marketing ; Coastal fisheries ; Pelagic fisheries ; Multispecies fisheries ; Artisanal fishing ; Fish catch statistics ; Fisheries ; Coastal fisheries ; Demersal fisheries ; Pelagic fisheries ; Marine fisheries ; Marine molluscs ; Marine resources ; Marketing ; Capture fishery economics ; Multispecies fisheries
    Repository Name: AquaDocs
    Type: Report
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  • 51
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    Publication Date: 2021-01-30
    Description: This document presents the Senegalese maritime fishing statistics in 2006 with the catch from the artisanal fisheries, the industrial fisheries as well as exports and the value of commercial coating.The document also informs on the number of estimated canoes , the estimated number of fishermen, consumption of fresh fish product and processed products. The document also shows fisheries statistics by marine areas.
    Description: Ministère de l'Economie Maritime, Direction des Pêches Maritimes, Dakar (Sénégal)
    Description: Published
    Description: statistique, pêche artisanale, pêche industrielle, commercialisation, pêche maritime,
    Keywords: Fisheries ; Demersal fisheries ; Fishery data ; Marine fisheries ; Coastal fisheries ; Commercial fishing ; Cephalopod fisheries ; Coastal fisheries ; Demersal fisheries ; Fisheries ; Fish catch statistics ; Fishery economics ; Fishery industry ; Fishery data ; Fishery statistics ; Fishing vessels statistics ; Marine fisheries
    Repository Name: AquaDocs
    Type: Report
    Format: 104
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  • 52
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    Unknown
    Publication Date: 2021-01-30
    Description: Published
    Description: pêche artisanale; pêche industrielle; pêche par espéce; Saint-Louis; Thiès; Louga; Dakar; Ziguinchor
    Keywords: Fishery products ; Fisheries ; Capture fishery economics ; Fishery economics ; Fishery statistics ; Fishery products ; Fisheries ; Artisanal fishing
    Repository Name: AquaDocs
    Type: Book
    Format: 950233 bytes
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  • 53
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    In:  Other Sources
    Publication Date: 2019-08-28
    Description: The videotape includes footage of the following: Voyagers to Jupiter, Pioneer to Saturn, High Energy Astronomy Observatory, space telescope, space shuttle, astronauts Young and Crippen, 10th anniversary of Apollo 11, Skylab reentry, Landsat, satellite freeze warning, Fire Fighting Module, SAGE, wind generators, Solar Energy Project, electric car research, XV-15, HiMAT, and crash worthiness tests.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: ASR-178 , NASA-TM-109443 , NONP-NASA-VT-93-190240
    Format: text
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  • 54
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    In:  CASI
    Publication Date: 2019-08-28
    Description: The proceedings of a news conference on the Voyager 2 Jupiter project are presented. Topics include the instrumentation on the Voyager 2, Jupiter's atmosphere and magnetic field, the Jupiter moons, and the observations of lightning on Jupiter.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-80854 , P79-10189
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  • 55
    Publication Date: 2019-08-28
    Description: The spatial distribution of major units of uniform relative age exposed in the far eastern maria and Mare Humorum was determined using a crater density mapping technique. Correlation of crater densities and radiometric ages of Apollo and Luna landing sites provided estimates of the absolute ages for the units. The combination of such data with relative age data from previous crater morphology studies produced a complete map of the distribution of major age units in the lunar near-side maria. The map shows that there are young (2.5 + or - 0.5 billion years old) mare basalts in the eastern maria, although most young flows occur in the western maria. The vents for the young flows generally are found along the edges of basins. Because old mare units (greater than 3.5 billion years old) are also commonly found around the edges of the basins, it is suggested that the basins were subsiding during filling, probably as a result of isostatic compensation due to the weight of the lava.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 13, 1978 - Mar 17, 1978; Houston, TX
    Format: text
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  • 56
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    In:  CASI
    Publication Date: 2019-08-28
    Description: The Viking spacecraft are described as well as the instruments carried to accomplish the combined goal of studying the atmosphere and geology of the entire planet, and to analyze the Martian soil and search for life in two specific locations. Imagery received from the spacecraft illustrate discussions of the planetary surface, composition, and winds. Suggestions for further reading are included along with a list of available NASA film. Experiments and activities for classroom use are described.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: EP-146
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  • 57
    Publication Date: 2019-08-28
    Description: Mass spectrometer experiments installed on the descent vehicles of the Venera-11 and the Venera-12 are described. Data on the chemical composition of the lower atmosphere of Venus is discussed with emphasis on the isotope state of the basic components (carbon, oxygen, nitrogen) and of the inert gases.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75477
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  • 58
    Publication Date: 2019-08-28
    Description: Eight analyses of the atmosphere of Venus were made beginning at an altitude of 42 km right down to the surface of the planet. The following were detected in the atmosphere of Venus: nitrogen in concentrations of 2.5 plus or minus 0.5 volumetric %, argon ir concentrations (4 plus or minus 2) x 10 to the minus 3 power volumetric %, CO--(2.8 plus or minus 1.4) x 10 to the minus 3 power volumetric % and SO2 in concentrations (1.3 plus or minus 0.6) x 10 to the minus 2 power volumetric %. The upper limits were estimated for the content of oxygen and water equal to 2 x 10 to the minus 3 power and 10 to the minus 2 power volumetric %, respectively.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75476
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  • 59
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    Publication Date: 2019-08-28
    Description: A NASA News Release is presented which contains the following: (1) general release; (2) two views of Voyager 2 flight past Jupiter; (3) Voyager mission summary; (4) Voyager 1 science results; (5) Jupiter science objectives; (6) Jupiter the planet and its satellites; (7) Voyager experiments; (8) planet comparison; (9) a list of Voyager science investigators and (10) the Voyager team.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-NEWS-RELEASE-79-86 , P79-10088
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  • 60
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    In:  Other Sources
    Publication Date: 2019-08-28
    Description: Altitudes and relative ages of mare surface units were compared to test if a systematic correlation in height of lava eruption surfaces and age might reflect a corresponding increase in depth of the magma chamber with time; in addition the altitudes were studied to shed light on the time and place of warping of mare surfaces. The laser altimeter data from the Apollo missions and relative age data based on crater erosion models and crater counts were used for the study. The data were correlated by using the image data bank of the Lunar Geoscience Consortium. Results of the first part of the study are inconclusive as no systematic increase in height of lavas with time could be shown. The data of the second part of the study support the conclusion that mare surfaces may have warped throughout most of the time represented by sample ages from the Apollo missions, and that the lithosphere may have become strong enough to remain stable after the time of Apollo 12 samples around 3 b.y. ago.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Science Conference; Mar 19, 1979 - Mar 23, 1979; Houston, TX
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  • 61
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    In:  CASI
    Publication Date: 2019-08-28
    Description: An overview of the Viking Mars probe is presented. The Viking spacecraft is described and a brief history of the earlier observations and exploration of Mars is provided. A number of the Viking photographs of the Martian surface are presented and a discussion of the experiments Viking performed including a confirmation of the general theory of relativity are reported. Martian surface chemistry is discussed and experiments to study the weather on Mars are reported.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-EP-146
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  • 62
    Publication Date: 2019-08-28
    Description: Altitude profiles of the concentrations of the atmospheric components measured by the on board mass spectrometers during the descent of Viking lander are discussed by assuming that temperature has a smoother profile, and the eddy mixing coefficients are smaller at altitudes of 120 to 170 km than those formally determined. The influence of acoustic gravitational waves and errors in measurements and calculations are discussed in relation to the convolutions in the altitude profiles of the concentrations of the atmospheric components and the temperature of the atmosphere.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75717 , PR-343
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  • 63
    Publication Date: 2019-08-28
    Description: A numerical simulation of the process of formation of the terrestrial planets is carried within the framework of a new theory for the accumulation of planetary and satellite systems. The numerical simulation permitted determining the parameters of the protoplanetary disk from which Mercury, Venus and the Earth were formed as result of the evolution. The acquisition of a slow retrograde rotation for Venus was discovered during the course of the investigation, whereas Mercury and the Earth acquired direct rotation about their axes. Deviations of the semimajor axes of these three planets as well as the masses of the Earth and Venus from the true values are small as a rule (l 10%). It is shown that during the accumulation of the terrestrial planets, there existed a profound relationship between the process of formation of the orbits and masses of the planet and the process of formation of their rotation about their axes. Estimates are presented for the radii of the initial effective bodies and the time of evolution for the terrestrial accumulation zone.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75641 , PREPRINT-135
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  • 64
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Scientific objectives and mission strategies for a flyby of Halley's comet and rendezvous with Tempel-2 are discussed. Instrumentation to be carried by both the rendezvous spacecraft and the coma probe payload are listed. Known characteristics of both comets are summarized.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-80542
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  • 65
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Physical features of the planet Venus, including its rotational characteristics and the surface properties observed by NASA's Deep Space Network radar scanner and Soviet spacecraft are examined. Atmospheric composition and circulation and the nature of the Venus clouds are also discussed in this instructional pamphlet. A reading list and student projects are included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-79954 , NF-86/12-77
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  • 66
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    In:  CASI
    Publication Date: 2019-08-28
    Description: General scientific questions and measurement objectives that can be addressed on a first comet mission relate to: (1) the chemical nature and the physical structure of comet nuclei as well as the changes that occur as functions of time and orbital position; (2) the chemical and physical nature of the atmospheres and ionospheres of comets, the processes which occur in them, and the development of these atmospheres and ionospheres as functions of time and orbital position; and (3) the nature of comet tails, the processes by which they are formed, and the interaction of comets with the solar wind. Capabilities of the various instruments required are discussed.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-80543
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  • 67
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    In:  CASI
    Publication Date: 2019-08-28
    Description: An overview of the Voyager mission to Jupiter, Saturn, and possibly Uranus is presented. Scientific instruments onboard the spacecraft are described as well as methods used for their calibration and evaluation during the cruise phase of the mission. Experiments to be performed cover the following areas: imaging science, radio science, cosmic rays, ultraviolet spectroscopy, photopolarimetry, planetary radio astronomy, magnetic fields, low-energy charged particles, plasma science, and infrared radiometry and spectroscopy. A list of the satellites of Jupiter and their diameters, distances, and periods is included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-NEWS-RELEASE-79-23 , P79-10024
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  • 68
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    In:  CASI
    Publication Date: 2019-08-28
    Description: The Galileo Jupiter orbiter and its science investigations are briefly described as a baseline design for a Saturn orbiter.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: JPL The Saturn System; p 379-384
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  • 69
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    In:  CASI
    Publication Date: 2019-08-28
    Description: The current state of asteroid science is assessed. Future space missions to gain more knowledge on asteroid relationship to solar system formation are outlined.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CP-2053 , Jan 19, 1978 - Jan 21, 1978; Chicago
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  • 70
    Publication Date: 2019-08-28
    Description: Global mean distributions of Martian atmospheric components concentrations from the planet's surface up to an altitude of 250 km are calculated. Improved data on the turbulent mixing coefficient, as a function of altitude, on temperature distribution and on chemical and photochemical reaction rates are used. The model data agree well with available measurements of some components concentrations. Variations of composition due to long-period variations of temperature, moisture and turbulent mixing are investigated. The relative significance of different catalytic cycles and the important role of excited atoms 0 (d-1) are revealed.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75048
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  • 71
    Publication Date: 2019-08-28
    Description: Formation of the equatorial jet of the Jovian surface was explained as a consequence of the Taylor-Proudman theorem. The asymptotic theory of motion of low viscosity fluids in a rotating spherical shear layer was included. The model shows the straited structure of the Jovian surface as the outflow of convective cells having the shape of axisymmetric rolls extended along the axis of rotation in the meridional direction. Depth of the layer was found to be of the order of 1000 kilometers.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75247
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  • 72
    Publication Date: 2019-08-28
    Description: The science objectives of a first comet mission are reviewed and related to what is known or can be expected to be learned in the near future from ground-based and near earth observations. A set of instruments and their science objectives are defined for a mission to Comet Halley during its 1985/86 apparition. The benefits from a fast flyby, a slow flyby, or a rendezvous mission and the relative impact of each on the instrument payload were assessed. The relative scientific value of encounters with the comet at distances from the sun ranging from 1 AU to 2.5 AU, including possible tradeoffs between flyby velocity and distance was considered. Pre- and post-perihelion encounters were likewise evaluated.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-78420
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  • 73
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    In:  CASI
    Publication Date: 2019-08-28
    Description: The NASA Voyager mission to explore planets of the outer solar system is summarized. The mission schedule and profiles for encounters with Jupiter and Saturn, and possibly with Uranus and Pluto are included along with a description of the spacecraft and its trajectories. Scientific investigations to be made and the instruments carried are also discussed.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-SP-420
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  • 74
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    In:  Other Sources
    Publication Date: 2019-08-28
    Description: Theoretical understanding of geologic processes of all planets and satellites is the ultimate goal of comparative geologic studies, simply because it is not possible to sample and study all bodies in the solar system in situ. Theories must make verifiable predictions, be able to test the aptness of terrestrial analogs, and ultimately should provide direction for future planetary research.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: A Geol. Basis for the Exploration of the Planets; p 85-106
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  • 75
    Publication Date: 2019-08-28
    Description: The atmosphere and topography of Venus were studied in detail from the Venera-9 and Venera-10. Research on plasma around the Sun was also carried out. Information on pressure, temperature and gas composition of the atmosphere in five regions of the planet was obtained. The Venera-9 and Venera-10 transmitted useful information for several months, making a detailed study possible. Radio waves and fluoroscopy were used as the research methods.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75578
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  • 76
    Publication Date: 2019-08-28
    Description: This bibliography cites publications submitted by 484 principal investigators and their associates who were supported through NASA's Office of Space Sciences Planetary Geology Program. Subject classifications include: solar system formation, comets, and asteroids; planetary satellites, planetary interiors, geological and geochemical constraints on planetary evolution; impact crater studies, volcanism, eolian studies, fluvian studies, Mars geological mapping; Mercury geological mapping; planetary cartography; and instrument development and techniques. An author/editor index is provided.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-79732
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  • 77
    Publication Date: 2019-08-28
    Description: The history of naming the details of the relief on the near and reverse sides of the moon is examined. The book contains lists of the names of craters of the reverse side of the moon in Russian and the Latin spellings.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75035
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  • 78
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    Publication Date: 2019-08-28
    Description: Numerous questions generated by past Soviet and U.S. Venus missions regarding the climate and history of Venus have stimulated the initiation of a new U.S. program of Venus probes and orbiters. Among the issues that these missions are intended to resolve are the intensity of sunlight reaching the surface of the planet, the extent and composition of the cloud layer, and the mechanisms responsible for the extremely high surface temperatures measured by earlier probes. Also of interest are the reasons for the sharply differing terrains revealed by the Soviet probes Venera 9 and 10. Clarification of such questions may be expected to improve understanding of the origin of life on earth.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Natural History; 85; June-Jul
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  • 79
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    Publication Date: 2019-08-28
    Description: Staffing, financing and budget controls, and research grant allocations of NASA are reviewed with emphasis on NASA-supported research in planetary geological sciences: studies of the composition, structure, and history of solar system planets. Programs, techniques, and research grants for studies of Mars photographs acquired through Mariner 6-10 flights are discussed at length, and particularly the handling of computer-enhanced photographic data. Scheduled future NASA-sponsored planet exploration missions (to Mars, Jupiter, Saturn, Uranus) are mentioned.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Sky and Telescope; 51; Jan. 197
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  • 80
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Various phases of planetary operations related to the Viking mission to Mars are described. Topics discussed include: approach phase, Mars orbit insertion, prelanding orbital activities, separation, descent and landing, surface operations, surface sampling and operations starting, orbiter science and radio science, Viking 2, Deep Space Network and data handling.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-NEWS-RELEASE-76-116
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  • 81
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    Publication Date: 2019-08-28
    Description: The scientific goals of the Viking mission are described. The science investigations to be carried out are explained and a timetable of planetary operations is outlined. Descriptions of the Viking orbiter and lander systems are presented including explanations of the Viking experimental instrument subsystems.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-NEWS-RELEASE-76-103 , P76-10101
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  • 82
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Abstracts of reports which summarize work conducted by Planetology Program Principal Investigators are presented. Full reports of selected abstracts were presented to the annual meeting of Planetology Program Principal Investigators at the Center for Astrogeology, U.S. Geological Survey, Flagstaff, Arizona, March 8, 9, 19, 1976.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-X-3364
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  • 83
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Data derived from Mariners 6, 7, and 9, Russian Mars probes, and photographic and radar observations conducted from earth are used to develop engineering models of Martian surface properties. These models are used in mission planning and in the design of landing and exploration vehicles. Optical models needed in the design of camera systems, dielectric properties needed in the design of radar systems, and thermal properties needed in the design of the spacecraft thermal control system are included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-SP-8020-REV
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  • 84
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Pioneer 11's encounter with Jupiter is discussed in detail. The scientific experiments carried out on the probe are described along with the instruments used. Tables are included which provide data on the times of experiments, encounters, and the distances from Jupiter. Educational study projects are also given.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-X-66833 , ISSUE-7
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  • 85
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    In:  CASI
    Publication Date: 2019-08-28
    Description: The evolution of Jupiter and Earth are discussed along with their atmospheres, the radiation belts around both planets, natural satellites, the evolution of life, and the Pioneer 10. Educational study projects are also included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-X-66829 , ISSUE-3
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  • 86
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Pioneer 10's encounter with Jupiter is discussed along with the interplanetary space beyond the orbit of Mars. Other topics discussed include the size of Jupiter, the Galilean satellites, the magnetic field of Jupiter, radiation belts, Jupiter's weather and interior, and future exploration possibilities. Educational projects are also included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-X-66832 , ISSUE-6
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  • 87
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    Publication Date: 2019-08-28
    Description: The planet Jupiter, its planetary mass and atmosphere, radio waves emitted from Jupiter, thermal radiation, internal structure of Jupiter, and the possibility of life on Jupiter are discussed. Educational study projects are included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-X-66828 , ISSUE-2
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  • 88
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    In:  CASI
    Publication Date: 2019-08-28
    Description: Jupiter, its relationship to the other planets in the solar system, its twelve natural satellites, solar orbit and the appearance of Jupiter in the sky, and the sightings and motions of Jupiter in 1973 are discussed. Educational study projects for students are also included.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-X-66827 , ISSUE-1
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  • 89
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    Publication Date: 2019-08-28
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar Science Inst., Abstracts of Papers Presented at a Special Session of the Seventh Annual Lunar Science Conference on Utilization of Lunar Materials and Expertise for Large Scale Operations in Space; p 55-60
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  • 90
    Publication Date: 2019-08-28
    Description: More than 20 local Martian dust clouds and two global dust storms were observed with the Viking Orbiter camera. Sixteen of the local clouds were imaged in two colors or were observed with other instruments confirming their identification as dust clouds. These Viking results are compared with earth-based observations of Martian dust storms and with Mariner 9 data. Most of the dust activity seen by Viking occurred during southern hemisphere spring and early summer, when Mars was near perihelion and insolation was near maximum. About half the local clouds occurred near the edge of the southern polar cap, where winds are presumably enhanced by a strong regional temperature gradient. The other half occurred mainly in the southern hemisphere near regions where circulation models incorporating topography predict positive vertical velocities. Although dust clouds observed from earth show a similar partial correlation with models, some ambiguity exists concerning interpretation of regions near Hellespontus that have spawned the most spectacular Martian dust storms on record.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research; 84; June 10
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  • 91
    Publication Date: 2019-08-28
    Description: The spring-summer retreat of the south polar cap of Mars is portrayed in photomosaics obtained by Viking Orbiter 2 during 1977. Comparisons of these data to Mariner 9 photos and to the record of telescopic observations attest that the polar retreat viewed by Viking was significantly slower than those previously reported. A global dust storm which occurred at an unusually early season may have effected this retarded recession by introducing dust into the atmosphere of Mars which modified the polar energy balance through scattering of incident radiation. The composition of the south residual cap cannot be unambiguously determined at this time; however, some data suggest that CO2 or clathrate survived the entire summer viewed by Viking.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research; 84; June 10
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  • 92
    Publication Date: 2019-08-28
    Description: The retreat of Mars' south polar cap during spring and summer was observed in detail by Viking orbiters. This regression was significantly slower than those observed previously by telescope and by Mariner 9. The retardation may have been caused by a reduction in surface insolation brought about by aerosols produced in an unusually early global dust storm.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: In: Evolution of planetary atmospheres and climatology of the earth; International Conference; Oct 16, 1978 - Oct 20, 1978; Nice; France
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  • 93
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    Publication Date: 2019-08-28
    Description: As a result of the Apollo program and other lunar probes, questions that remained unsolved during centuries of speculation and scientific study can now be answered concerning the composition, core, surface, age, and history of the moon. Data obtained from lunar samples and instruments on the lunar surface are being used to gain insight into the history of the earth and the other planets, planetary evolution, the development of planetary magnetic fields, the nature of the solar wind, and how the Sun operates. Projects suggested for using the moon to increase understanding of geophysics are described.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-EP-131
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  • 94
    Publication Date: 2019-08-28
    Description: Data received from Venera 11 and 12 experiments involving the electrical activity of the atmosphere of Venus show that the electrical discharges occur in the cloud layer. Their energy is roughly the same as in terrestrial lightning, but with a pulse repetition frequency of the discharges which is much greater.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-75639
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  • 95
    Publication Date: 2019-08-28
    Description: The evolution of Jupiter, as well as its rotation, atmosphere and magnetosphere are described in this third in a series of publications on the exploration of the outer planets by the Voyager spacecraft. Activities for student participation are included with a selected reading list.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-79953 , NF-89
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  • 96
    Publication Date: 2019-08-28
    Description: From near-infrared photometry (JHKL) of small bodies in the outer solar system a previously unrecognized class of planetary satellites is identified which may have surfaces mostly free of frosts of water, methane, or ammonia. These bodies - including two satellites of Uranus (Titania and Oberon), and one each of Saturn (Hyperion) and Neptune (Triton) - have surfaces characterized by neutral reflectance between J and H (1.25 and 1.60 microns) and rapidly decreasing reflectance at K (2.2 microns) and L (3.5 microns). It is pointed out that the 15 solid bodies in the outer solar system that have been satisfactorily observed (excluding the asteroids) fall into six classes according to spectral reflectance. The presence of water frost or ice on the surface of Enceladus is established.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Astrophysical Journal; vol. 217
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  • 97
    Publication Date: 2019-08-28
    Description: In September 1977, a crater studies workshop was held for the purpose of developing standard data analysis and presentation techniques. This report contains the unanimous recommendations of the participants. This first meeting considered primarily crater size-frequency data. Future meetings will treat other aspects of crater studies such as morphologies.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-TM-79730
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  • 98
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    Publication Date: 2019-08-28
    Description: The article gives a general discussion of the state of knowledge concerning the composition, structure, and history of the moon, with attention focused on the new data obtained from the study of the results of Apollo and Luna experiments. The general characteristics of the lunar rocks are mentioned and compared with those of the earth. A possible structure for the lunar interior, as revealed by data on moonquakes, heat flow measurements, and meteorite impacts is sketched. A scenario for the history of the moon is outlined.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Sky and Telescope; 53; Mar. 197
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  • 99
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    Publication Date: 2019-08-28
    Description: The purpose of the present paper is to review all asteroid diameter measurements, current through mid-1976, and to combine them in a consistent way to give the best available estimates for a sample totalling 187 objects. From these diameters it is possible to determine the size-distributions of minor planets down to diameters of 50 km in the inner belt and 100 km in the outer belt. The associated albedos further indicate the distribution of objects of the C, S, and M classes throughout the belt.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: International Colloquium; Aug 17, 1976 - Aug 20, 1976; Lyons; France
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  • 100
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    In:  CASI
    Publication Date: 2019-08-28
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-NEWS-RELEASE-77-203 , P77-10201
    Format: application/pdf
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