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Effects of chronic bottom trawling disturbance on benthic biomass, production and size spectra in different habitats Queirós, A.M.; Hiddink, J.G.; Kaiser, M.J.; Hinz, H. (2006). Effects of chronic bottom trawling disturbance on benthic biomass, production and size spectra in different habitats. J. Exp. Mar. Biol. Ecol. 335: 91-103 In: Journal of Experimental Marine Biology and Ecology. Elsevier: New York. ISSN 0022-0981; e-ISSN 1879-1697, meer

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Beschikbaar in	Auteurs
VLIZ: Non-open access 102932 [ aanvragen ]

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Trefwoorden

Aquatic communities > Benthos Biological production > Secondary production Catching methods > Net fishing > Trawling > Bottom trawling Dimensions > Size Equipment > Fishery industry equipment > Fishing gear Population characteristics > Biomass Production ANE, Ierse Zee [Marine Regions]; ANE, North Sea, Dogger Bank [Marine Regions] Marien/Kust

Author keywords

Bottom trawling; Infauna; Secondary production; Size spectrum

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Auteurs		Top
Queirós, A.M., meer Hiddink, J.G., meer Kaiser, M.J., meer Hinz, H., meer

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Abstract

Bottom trawling has widespread impacts on benthic communities and habitats. It is argued that the impact o f chronic bottom trawling on benthic infauna depends on the natural disturbance levels to which benthic communities are adapted. We analysed biomass, production and size structure o f two communities from a muddy and a sandy habitat, in relation to quantified gradients of trawling disturbance on real fishing grounds. We used an allometric relationship between body mass and individual production to biomass ratio to estimate community production. Chronic trawling had a negative impact on the biomass and production o f benthic communities in the muddy habitat, while no impact was identified on benthic communities from the sandy habitat. These differences are the result o f differences in size structure within the two communities that occur in response to increasing trawling disturbance.

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