Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 422044
Title Ecological and economic trade-offs in the management of mixed fisheries: a case study of spawning closures in flatfish fisheries
Author(s) Rijnsdorp, A.D.; Overzee, H.M.J. van; Poos, J.J.
Source Marine Ecology Progress Series 447 (2012). - ISSN 0171-8630 - p. 179 - 194.
DOI http://dx.doi.org/10.3354/meps09519
Department(s) IMARES Visserij
Aquaculture and Fisheries
WIAS
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) north-sea plaice - pleuronectes-platessa l - life-history evolution - evolving fish stocks - demersal fisheries - ecosystem approach - reaction norms - adult plaice - impact - communities
Abstract As a contribution to the ecosystem approach to fisheries management, we estimated the effects of spawning closures on stock status, ecosystem impacts and economic performance. We focused on the flatfish fishery in the North Sea and explored how spawning closures for plaice and sole contribute to sustainable management of 4 target species (sole, plaice, turbot and brill). Seasonal patterns in fishing effort and catchability by age group and area were estimated to quantify the effect of different spawning closure scenarios on the selection pattern. The scenario performance was evaluated using indicators of stock status (spawning stock biomass), economic performance of the fishery (yield, revenue) and ecosystem impact (discards, bycatch of cod and rays, seabed integrity, fisheries-induced evolution). In a single-species context, spawning closures may be beneficial for the target species, while in a mixed fisheries and ecosystem context, negative effects may occur. A spawning closure for plaice combines positive effects on the plaice stock and the revenue with reductions of the negative impact for several ecosystem indicators and only a small negative effect on sea bed integrity. The effects did not differ when evaluated at current levels of effort or at maximum sustainable yield (MSY) effort. Tailor-made solutions are required that need to be developed in stakeholder consultation to trade-off the ecological and economic objectives. Mixed-species MSY was lower than the sum of the single-species MSYs.
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