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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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How far have the ecological effects of fishing in the North Sea ramified? Frid, C.L.J.; Clark, R.A.; Percival, P. (2001). How far have the ecological effects of fishing in the North Sea ramified? Senckenb. Marit. 31(2): 313-320. https://dx.doi.org/10.1007/BF03043039 In: Senckenbergiana Maritima: Wissenschaftliche Mitteilungen der Senckenbergischen naturforschenden Gesellschaft. E. Schweizerbart'sche Verlagsbuchhandlung (Nägele u. Obermiller): Stuttgart. ISSN 0080-889X, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 125389 [ download pdf ]

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Trefwoorden

Ecosystems Fishing Food webs Nutrients (mineral) Temporal variations > Long-term changes ANE, Noordzee [Marine Regions] Marien/Kust

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Auteurs		Top
Frid, C.L.J., meer Clark, R.A. Percival, P.

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Abstract

Man has been taking fish from the North Sea for 1,000s of years and intensive, mechanised fishing has been occurring for over 100 years — longer than the period of marine biological studies. It is therefore impossible to use the standard approaches to the assessment of the ecological effects of fisheries — there are no baseline/pre-impact data. In this study a variety of approaches are used to attempt to assess to what extent the direct (removal of target species) and indirect (removal of non-target species, habitat change, nutrient, organic flux changes etc.) effects of fisheries have altered the North Sea ecosystem. The approaches used include classic benthic time series, comparisons of historic records and modelling. Each approach has its flaws and limitations but by generating a synthesis of these findings it is possible to make an assessment of the ecological role of fisheries even with no pre-impact data. The results suggest that in many areas changes in the benthos have occurred as a result of fishing activities. In some areas such changes may have occurred as early as 1915–20, but in other areas changes were still occurring in the 1980s as fishing gears/intensity altered.

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