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Registros recuperados: 5
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Combining indicator trends to assess ongoing changes in exploited fish communities: diagnostic of communities off the coasts of France ArchiMer
Rochet, Marie-joelle; Trenkel, Verena; Bellail, Robert; Coppin, Franck; Le Pape, Olivier; Mahe, Jean-claude; Morin, Jocelyne; Poulard, Jean-charles; Schlaich, Ivan; Souplet, Arnauld; Verin, Yves; Bertrand, Jacques.
We present a method for combining individual indicator results into a comprehensive diagnostic of fishing impacts on fish populations and communities. A conceptual framework for interpreting combined trends in a set of simple indicators is proposed, relying beforehand on qualitative expectations anchored in ecological theory. The initial state of the community is first assessed using published information. Which combinations of trends are acceptable or undesirable is decided, depending on the initial status. The indicators are then calculated from a time-series and their time trends are estimated as the slopes of linear models. Finally, the test results are combined within the predefined framework, providing a diagnostic on the dynamics of fishing impacts...
Tipo: Text Palavras-chave: Scientific surveys; Multispecies fisheries; Indicators; Ecosystem approach to fisheries management.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-773.pdf
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Etude sur le savoir écologique des pêcheurs artisans des petits pélagiques en Afrique du Nord-Ouest OceanDocs
Sall, A..
Agriculture, Nature and Food Quality, Den Haag (Netherlands); Ministerie Van Buitenlandse Zaken, Brussel (Belgium); Wageningen International, Wageningen (Netherlands)
Tipo: Report Palavras-chave: Fisheries; Artisanal fishing; Fishermen; Fishing effort; Canoe fisheries; Coastal zone; Fishery engineering; Protected resources; Pelagic fisheries; Cycles; Sexual reproduction; Multispecies fisheries; Stocks; Ocean currents; Winds; Biomass; Upwelling; Ecosystems; Maritime legislation; Size; Biomass; Ecosystems; Fisheries; Fishermen; Stocks; Ocean currents; Winds; Size; Fishing effort; Pelagic fisheries; Sexual reproduction; Multispecies fisheries; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_12883; Http://aims.fao.org/aos/agrovoc/c_8401; Http://aims.fao.org/aos/agrovoc/c_7093; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_26876; Http://aims.fao.org/aos/agrovoc/c_4987.
Ano: 2009 URL: http://hdl.handle.net/1834/3671
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L'état des communautés exploitées au large des côtes de France. Application d'indicateurs à l'évaluation de l'impact de la pêche. ArchiMer
Bertrand, Jacques.
Since about twenty years, Ifremer have carried out fishery surveys along the French coasts. A dynamic indicator-based approach to the assessment of multi-stock fisheries has been applied to these data series. Reference points for non-commercial populations and community indicators are seldom available, but reference directions are well established: it is known whether fishing will increase or decrease the indicator, hence the direction that should be avoided. A set of simple indicators of fishing impacts on fish populations and communities were estimated from time-series data provided by scientific surveys (population abundance and average length, community total biomass and number, average length and weight, and size spectrum). Trends in these indicators...
Tipo: Text Palavras-chave: Approche écosystémique pour la gestion des pêches; Pêcheries multi-spécifiques; Campagnes scientifiques; Indicateurs.; Ecosystem approach to fisheries management; Multispecies fisheries; Scientific surveys; Indicators.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/00326/43763/43320.pdf
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Résultats généraux de la pêche maritime sénégalaise 1999 OceanDocs
Les captures globales dans la Zone Economique Exclusive ( ZEE) ont augmenté, passant de 443 651 tonnes en 1998 à 479 308 tonnes en 1999, soit une hausse de l’ordre de 8 %. 1- PECHE ARTISANALE: Les débarquements ont baissé de 3,5 % en volume et 8 % en valeur. Ce fléchissement est lié à la forte baisse enregistrée dans la région de Thiès qui assure plus de 70 % de la production. La composition des captures laisse apparaître une prédominance des sardinelles (plus de 60 % ). L’année 1999 a enregistré une production record de poulpe sur la grande côte, avec une hausse de 220 %. Le parc piroguier n’a pas connu d’évolution significative. 2- PECHE INDUSTRIELLE Le nombre de navire en activité dans la ZEE (Sénégalais et...
Tipo: Report Palavras-chave: Fishery statistics; Multispecies fisheries; Fishery industry; Artisanal fishing; Demersal fisheries; Demersal fisheries; Multispecies fisheries; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4987.
Ano: 2000 URL: http://hdl.handle.net/1834/1527
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Résultats généraux des pêches maritimes 2004 OceanDocs
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.
Tipo: Report Palavras-chave: 1603; Artisanal fishing; Fish catch statistics; Fisheries; Coastal fisheries; Demersal fisheries; Pelagic fisheries; Marine fisheries; Marine molluscs; Marine resources; Marketing; Capture fishery economics; Multispecies fisheries; Fisheries; Demersal fisheries; Marine fisheries; Marine resources; Marketing; Coastal fisheries; Pelagic fisheries; Multispecies fisheries; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_28012; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_4987.
Ano: 2007 URL: http://hdl.handle.net/1834/2249
Registros recuperados: 5
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