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Book (series)Life cycle assessment of southern pink shrimp products from Senegal. An environmental comparison between artisanal fisheries in the Casamance region and a trawl fishery based in Dakar. 2009
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No results found.Life cycle assessment (LCA) of two Senegalese seafood products exported to Europe has been undertaken based on the functional unit of one kilogram of product (frozen whole shrimps, independent of size) plus the accompanying packaging at the point of import to Europe, i.e. transported by boat to Vigo, Spain. The products are exchangeable on the European market, but the way they reach this market from the fishery over processing is very different. One product is produced through on-board p rocessing on demersal trawlers based in Dakar fishing at sea in FAO fishing zone 34 (eastern central Atlantic), then landed and stored before being exported to Europe. The other product originates in artisanal fisheries in the Casamance River in southern Senegal. Fishing takes place to similar extents by the two fishing methods: Mujas, a fixed trawl set in the deepest part of the river from a canoe, and Félé-félé, a type of driftnet managed by three men in a canoe. The shrimps are land ed and transported to a processing plant in Ziguinchor where they are washed, packed and frozen before land transportation to Dakar, storage and finally shipment to Europe. The three fisheries included (trawl, Mujas and Félé-félé) were shown to have highly different catch compositions. Each fishing method has advantages and drawbacks from a biological point of view, i.e. proportion of discard, landed bycatch and small shrimps in the catch. LCA results showed major differences between the two final products, with regard to resource use and environmental impact, depending on their origin. For the product originating in trawling, fishing was the most important activity in all categories of environmental impact. For the product originating in the artisanal fishery, fishing was the most important activity from a biological point of view. In contrast, processing and storage dominated the two categories: global warming and ozone depletion potential. The main areas to improve regarding these categories in the production chain of the trawled product are the use of fuel and refrigerants on board, while the main areas for improvement in the chain of the artisanal product are the use of energy and refrigerants in the processing plant and the energy source used by the plant. Both on board the trawlers and in the mainland processing of artisanal shrimps, considerable amounts of refrigerants with a high global warming and ozone depletion potential are used to fre eze the shrimp products. In both chains, transportation was found to be of minor importance. Increased traceability and labelling is also desirable to enable active consumer choices between products. -
Poster, bannerInteractions between land use, water and sediment fluxes and the spread of bacterial contaminants in the uplands of northern Lao PDR 2018
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Book (series)GFCM - Report of the Workshop on Standardization of Selectivity Methods Applied to Trawling in the / CGPM - Rapport de l’atelier sur la standardisation des méthodes de sélectivité appliquées au chalutage en 2007
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No results found.A General Fisheries Commission for the Mediterranean (GFCM) Workshop on Standardization of Selectivity Methods Applied to Trawling in the Mediterranean Sea has been organized by the French Research Institute for the Exploitation of the Sea (IFREMER) with the participation of FAO regional projects, COPEMED (Cooperation Networks to facilitate Coordination to Support Fisheries Management in the Western and Central Mediterranean) and ADRIAMED (Scientific Cooperation to Support Responsi ble Fisheries in the Adriatic Sea). The examination of different selectivity studies presented to the workshop showed the technical and practical difficulties in defining a single method to apply in the various situations encountered in the Mediterranean, but the need for using common rules to facilitate the exchange and the comparison of the results was underlined. Fish behaviour, survival after escapement and experimental reliability of statistical methods were discussed. The wor kshop acknowledged that square meshes are more selective than diamond meshes. It further stressed the need to investigate the selectivity impacts of square meshes on various species of different shapes (e.g. flatfishes) and to evaluate selectivity in economical terms. The workshop recommended the realization of a practical guide for selectivity studies in the Mediterranean and the establishment of a common selectivity database including both technical elements of the experimentatio ns and parameters of selectivity obtained. The need of establishing a network of fishing technologists including the fishing sector representatives was also expressed.
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