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Community structure and production of the macrobenthic infauna in relation to the micro-distribution of trawling effort
Craeymeersch, J.A.; Piet, G.J.; Rijnsdorp, A.D. (2004). Community structure and production of the macrobenthic infauna in relation to the micro-distribution of trawling effort. Rapport Rijksinstituut voor Visserijonderzoek, C019/04. RIVO: Yerseke. 10 pp.
Part of: Rapport Rijksinstituut voor Visserijonderzoek. Rijksinstituut voor Visserijonderzoek (RIVO): Ijmuiden, more

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Keyword
    Marine/Coastal

Authors  Top 
  • Craeymeersch, J.A., more
  • Piet, G.J., more
  • Rijnsdorp, A.D., more

Abstract
    The longer term effects of beam trawl fisheries depend on the benthic species composition and the life history characteristics. Beam trawling may have caused a shift in the benthic community from low-productive, long-lived species to high-productive, short-lived species. The effects may be inferred from comparisons of areas under different levels of fishing disturbance. Craeymeersch et al. (2000) focused on two sub-areas on the Dutch Continental Shelf. The authors indeed found a significant difference in species composition between intensively fished and less heavily fished areas but the found relationship might be largely correlative. It has been suggested that the scale at which the study was done was too small. A re-analysis of the data on a larger scale did not result in a significant relationship between species composition and fishing effort. There seems to be no straight relationship between fishing effort and infaunal productivity. It is concluded that this not necessarily points to the non-existence of such relationship but to the need of more detailed analyses taking into account the temporal and spatial dynamics of fishermen, target species and benthic species.

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