The effect of management choices on the sustainability and economic performance of a mixed fishery: a simulation study. Kraak, S. B. M., Buisman, F. C., Dickey-Collas, M., Poos, J. J., Pastoors, M. A., Smit, J. G. P., van Oostenbrugge, J. A. E., & Daan, N. ICES JOURNAL OF MARINE SCIENCE, 65(4):697-U3, OXFORD UNIV PRESS, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND, MAY, 2008.
doi  abstract   bibtex   
Alternative management scenarios were evaluated in a simulation framework that mimicked the recent exploitation of sole and plaice in the North Sea. A large proportion of plaice is taken as bycatch of the beam trawl fleet targeting sole, yet current management of the two stocks assumes no interaction in their exploitation. The evaluation criteria included biological and economic sustainability, and stability in the management measures. The fishery was assumed to respond to management restrictions by dropping the least profitable trips. We investigated two contrasting management strategies, single-species total allowable catches, and effort regulation. Under the assumptions made, the latter strategy performed better. The results suggest that, given assessment error and bias, a strategy that accounts for the mixed nature of a fishery and that occasionally results in perceived underexploitation may work best. Stability in fishing mortality reinforces itself, through lower assessment bias, and management corrections become less frequent. The common assumption in many stock assessments in EC waters that fishing mortality in the most recent year should resemble the value obtained in previous years (''shrinkage'') had a negative effect on the stability of control measures.
@article{ ISI:000255816900020,
Author = {Kraak, S. B. M. and Buisman, F. C. and Dickey-Collas, M. and Poos, J. J.
   and Pastoors, M. A. and Smit, J. G. P. and van Oostenbrugge, J. A. E.
   and Daan, N.},
Title = {{The effect of management choices on the sustainability and economic
   performance of a mixed fishery: a simulation study}},
Journal = {{ICES JOURNAL OF MARINE SCIENCE}},
Year = {{2008}},
Volume = {{65}},
Number = {{4}},
Pages = {{697-U3}},
Month = {{MAY}},
Abstract = {{Alternative management scenarios were evaluated in a simulation
   framework that mimicked the recent exploitation of sole and plaice in
   the North Sea. A large proportion of plaice is taken as bycatch of the
   beam trawl fleet targeting sole, yet current management of the two
   stocks assumes no interaction in their exploitation. The evaluation
   criteria included biological and economic sustainability, and stability
   in the management measures. The fishery was assumed to respond to
   management restrictions by dropping the least profitable trips. We
   investigated two contrasting management strategies, single-species total
   allowable catches, and effort regulation. Under the assumptions made,
   the latter strategy performed better. The results suggest that, given
   assessment error and bias, a strategy that accounts for the mixed nature
   of a fishery and that occasionally results in perceived
   underexploitation may work best. Stability in fishing mortality
   reinforces itself, through lower assessment bias, and management
   corrections become less frequent. The common assumption in many stock
   assessments in EC waters that fishing mortality in the most recent year
   should resemble the value obtained in previous years ({''}shrinkage{''})
   had a negative effect on the stability of control measures.}},
Publisher = {{OXFORD UNIV PRESS}},
Address = {{GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Kraak, SBM (Reprint Author), Wageningen IMARES, POB 68, NL-1970 AB Ijmuiden, Netherlands.
   Kraak, S. B. M.; Dickey-Collas, M.; Poos, J. J.; Pastoors, M. A.; Daan, N., Wageningen IMARES, NL-1970 AB Ijmuiden, Netherlands.
   Buisman, F. C.; Smit, J. G. P.; van Oostenbrugge, J. A. E., Agr Econ Res Inst LEI, NL-2502 LS The Hague, Netherlands.}},
DOI = {{10.1093/icesjms/fsn045}},
ISSN = {{1054-3139}},
Keywords = {{economic performance; effort regulation; management strategy evaluation;
   mixed fishery; North Sea plaice; North Sea sole}},
Keywords-Plus = {{NORTH-SEA PLAICE; STOCK ASSESSMENT; FISHING EFFORT; ADVICE; EXPERIENCES;
   UNCERTAINTY; STRATEGIES; TRENDS; IMPACT}},
Research-Areas = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Web-of-Science-Categories  = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Author-Email = {{sarah.kraak@wur.nl}},
ResearcherID-Numbers = {{Dickey-Collas, Mark/A-8036-2008
   Poos, Jan Jaap/B-9940-2009}},
ORCID-Numbers = {{Poos, Jan Jaap/0000-0002-8507-5751}},
Number-of-Cited-References = {{31}},
Times-Cited = {{31}},
Usage-Count-Last-180-days = {{3}},
Usage-Count-Since-2013 = {{16}},
Journal-ISO = {{ICES J. Mar. Sci.}},
Doc-Delivery-Number = {{300IG}},
Unique-ID = {{ISI:000255816900020}},
OA = {{No}},
DA = {{2017-08-17}},
}

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