FN Archimer Export Format
PT Rapport
TI Selective fishing and balanced harvest in relation to fisheries and ecosystem sustainability. Report of a scientific workshop organized by the IUCN-CEM Fisheries Expert Group (FEG) and the European Board of Conservation and Development (EBCD) in Nagoya (Japan) 14-16 October 2010
BT 
AF Garcia, Serge
   Kolding, Jeppe
   RICE, Jake
   ROCHET, Marie-Joelle
   Zhou, Shijie
   Arimoto, Takafumi
   Borges, Lisa
   BUNDY, Alida
   Dunn, Daniel
   Graham, Norman
   Hall, Martin
   HEINO, Mikko
   LAW, Richard
   Makino, Mitsutaku
   RIJNSDORP, Adriaan D.
   Simard, François
   Smith, Anthony D.M.
   Symons, Despina
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FF 1:;2:;3:;4:PDG-DOP-DCN-EMH;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;17:;18:;
SI NANTES
SE PDG-DOP-DCN-EMH
UR https://archimer.ifremer.fr/doc/00026/13697/10775.pdf
LA English
DT Report
AB The conventional selectivity paradigm is briefly reviewed and its performance examined from an ecosystem perspective. It is stressed that the overall (cumulative) selectivity of the harvest process in an ecosystem is the result of nested selection by fishers and fisheries of: (i) habitats; (ii) species assemblages; (iii) populations and (iv) individuals. A range of ecosystem models predict a strong impact of concentrated fishing (selective fishing) on the ecosystem structure stability, resilience and productivity. There seem to be advantages (in both yield and maintenance of ecosystem structure and functioning) to distribute fishing pressure broadly across available species and ecosystem compartments. Balanced harvesting was therefore defined by the workshop as a strategy that distributes fishing pressure across the wider possible range of trophic levels, sizes and species, in proportion to their natural productivity, reducing fishing pressure where it is excessive. The few attempts to verify the impacts predicted by models in real ecosystems with empirical data had limited success, indicating that such demonstration might be a significant challenge. Data from African small-scale fisheries were presented as a possible example of the capacity of multiple fisheries targeting an extremely broad range of species and sizes to extract high yield with limited impact on ecosystem structure. There are also a number of examples of surprising consequences of selectivity regulations resulting in either operational changes in the fishery or to unexpected shifts in the ecosystem. Emerging research priorities and management implications are reviewed.
PY 2011
PD JAN
ID 13697
ER

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