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Ecosystem trends: evidence for agreement between fishers' perceptions and scientific information
Rochet, M.-J.; Prigent, M.; Bertrand, J.A.; Carpentier, A.; Coppin, F.; Delpech, J.-P.; Fontenelle, G.; Foucher, É.; Mahé, K.; Rostiaux, E.; Trenkel, V.M. (2008). Ecosystem trends: evidence for agreement between fishers' perceptions and scientific information. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 65(6): 1057-1068.
In: ICES Journal of Marine Science. Academic Press: London. ISSN 1054-3139, more
Peer reviewed article  

Available in  Authors 

Author keywords
    eastern English Channel, ecosystem approach to fisheries management, fisher knowledge, hypothesis testing, stakeholder interview

Authors  Top 
  • Rochet, M.-J.
  • Prigent, M.
  • Bertrand, J.A.
  • Carpentier, A.
  • Coppin, F.
  • Delpech, J.-P.
  • Fontenelle, G.
  • Foucher, É.
  • Mahé, K.
  • Rostiaux, E.
  • Trenkel, V.M.

    The results of a survey on fishers' perceptions of recent changes in the eastern English Channel ecosystem carried out in 2006 were compared with fishery and bottom-trawl survey data. A hypothesis-testing framework was used, testing the null hypothesis that fishers' statements were true, which permitted evaluation of both agreement and disagreement. Overall good agreement between fishers' statements and scientific data was found, and both sources suggested that the fish community in the Channel is undergoing large changes, among which are decreases in some commercially important species; in addition, a number of human pressures impact the ecosystem. Fishers had an accurate perception of changes and their time-frames, but not necessarily of their causes. They had a greater power than survey data to detect recent changes, showing that fishers' perceptions have great potential as early warning signals.

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