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Approche de l'impact écologique de la pêcherie thonière au filet maillant dérivant en Atlantique nord-est ArchiMer
Goujon, Michel; Antoine, Loic; Collet, Anne; Fifas, Spyros.
This document presents the results of a study on the impact of the french albacore tuna drift net fishery, mainly at the dolphins population level. Data collected during two embarked observers campains in 1992 and 1993 and the results of a sighting survey in 1993 give an estimation of the population size of common and striped dolphins (61 888 and 73 843) and mean values of ratio fishing of mortality (0.7 and 1.6%). A model was built in order to simulate the effect of the 5% upper limits of fishing mortality (1.5 and 3%). These values would leed to an annual rate of decrease of -1 %. It is unlikely that such values would jeopardize the survival and the presence of these species. Total incidental catches represent 15% of these total catch; albacore tuna...
Tipo: Text Palavras-chave: Impact écologique; Filets maillants; Mammifères marins; Germon; Ecological impact; Drift nets; Marine mammals; Albacore.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/1993/rapport-6862.pdf
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New developments in recirculating aquaculture systems in Europe: A perspective on environmental sustainability ArchiMer
Martins, C. I. M.; Eding, E. H.; Verdegem, M. C. J.; Heinsbroek, L. T. N.; Schneider, O.; Blancheton, Jean-paul; Roque D'Orbcastel, Emmanuelle; Verreth, J. A. J..
The dual objective of sustainable aquaculture, i.e., to produce food while sustaining natural resources is achieved only when production systems with a minimum ecological impact are used. Recirculating aquaculture systems (RASs) provide opportunities to reduce water usage and to improve waste management and nutrient recycling. RAS makes intensive fish production compatible with environmental sustainability. This review aims to summarize the most recent developments within RAS that have contributed to the environmental sustainability of the European aquaculture sector. The review first shows the ongoing expansion of RAS production by species and country in Europe. Life cycle analysis showed that feed, fish production and waste and energy are the principal...
Tipo: Text Palavras-chave: Intensive systems; Ecological impact; Waste; Water re-use; Denitrification.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00021/13190/10273.pdf
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