A knowledge-based model for evaluating the impact of gear-based management measures under Europe's new Common Fisheries Policy. Wise, L., Fonseca, P., Murta, A. G., Silva, C., Mendes, H., Carvalho, J. P., Borges, M. d. F., & Campos, A. ICES JOURNAL OF MARINE SCIENCE, 72(4):1140-1151, OXFORD UNIV PRESS, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND, MAY, 2015. 2nd Fishery Dependent Information Conference, Rome, ITALY, MAR 02-06, 2014
doi  abstract   bibtex   
A model combining qualitative and historical quantitative data in an innovative rule-based fuzzy cognitive map framework is used to assess and compare the long-term bioeconomic impact of adopting gear modifications aimed at reducing bycatch in the Portuguese crustacean trawl fishery. The impact of codend-related changes (mesh size and shape) and the introduction of a sorting device (sorting grid system) on the main target crustacean species (deepwater rose shrimp Parapenaeus longirostris and Norway lobster Nephrops norvegicus) and the main fish bycatch species (blue whiting Micromesistius poutassou, horse mackerel Trachurus trachurus, and European hake Merluccius merluccius) were evaluated. Horse mackerel was the only fish species for which changing codends negatively affected landings per unit of effort by large percentages. The use of a sorting grid system, only evaluated for blue whiting and Norway lobster, led to a strong decrease in landings per unit of effort, especially for the former species. The impact of gear alterations was negligible on fish spawning-stock biomass, but was significant for crustaceans, particularly rose shrimp. A straightforward evaluation of the economic impact (fishers' revenues) of the three bycatch reduction options showed these to be negligible or small.
@article{ ISI:000356232900002,
Author = {Wise, Laura and Fonseca, Paulo and Murta, Alberto G. and Silva, Cristina
   and Mendes, Hugo and Carvalho, Joao P. and Borges, Maria de Fatima and
   Campos, Aida},
Title = {{A knowledge-based model for evaluating the impact of gear-based
   management measures under Europe's new Common Fisheries Policy}},
Journal = {{ICES JOURNAL OF MARINE SCIENCE}},
Year = {{2015}},
Volume = {{72}},
Number = {{4}},
Pages = {{1140-1151}},
Month = {{MAY}},
Note = {{2nd Fishery Dependent Information Conference, Rome, ITALY, MAR 02-06,
   2014}},
Abstract = {{A model combining qualitative and historical quantitative data in an
   innovative rule-based fuzzy cognitive map framework is used to assess
   and compare the long-term bioeconomic impact of adopting gear
   modifications aimed at reducing bycatch in the Portuguese crustacean
   trawl fishery. The impact of codend-related changes (mesh size and
   shape) and the introduction of a sorting device (sorting grid system) on
   the main target crustacean species (deepwater rose shrimp Parapenaeus
   longirostris and Norway lobster Nephrops norvegicus) and the main fish
   bycatch species (blue whiting Micromesistius poutassou, horse mackerel
   Trachurus trachurus, and European hake Merluccius merluccius) were
   evaluated. Horse mackerel was the only fish species for which changing
   codends negatively affected landings per unit of effort by large
   percentages. The use of a sorting grid system, only evaluated for blue
   whiting and Norway lobster, led to a strong decrease in landings per
   unit of effort, especially for the former species. The impact of gear
   alterations was negligible on fish spawning-stock biomass, but was
   significant for crustaceans, particularly rose shrimp. A straightforward
   evaluation of the economic impact (fishers' revenues) of the three
   bycatch reduction options showed these to be negligible or small.}},
Publisher = {{OXFORD UNIV PRESS}},
Address = {{GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND}},
Type = {{Article; Proceedings Paper}},
Language = {{English}},
Affiliation = {{Wise, L (Reprint Author), Inst Portugues Mar \& Atmosfera, Av Brasilia, P-1449006 Lisbon, Portugal.
   Wise, Laura; Fonseca, Paulo; Murta, Alberto G.; Silva, Cristina; Mendes, Hugo; Borges, Maria de Fatima; Campos, Aida, Inst Portugues Mar \& Atmosfera, P-1449006 Lisbon, Portugal.
   Wise, Laura; Carvalho, Joao P., INESC ID, P-1000029 Lisbon, Portugal.
   Carvalho, Joao P., Univ Tecn Lisboa, Inst Super Tecn, P-1049001 Lisbon, Portugal.}},
DOI = {{10.1093/icesjms/fsv002}},
ISSN = {{1054-3139}},
EISSN = {{1095-9289}},
Keywords = {{crustacean trawling; evaluation tool; knowledge-based model; rule-based
   fuzzy cognitive map; selectivity; southern Portuguese coast}},
Keywords-Plus = {{CRUSTACEAN-TRAWL FISHERY; BY-CATCH REDUCTION; LOBSTER
   NEPHROPS-NORVEGICUS; PORTUGUESE SOUTH COAST; MESH COD ENDS;
   PARAPENAEUS-LONGIROSTRIS; SIZE-SELECTIVITY; BEHAVIOR; STRATEGIES;
   DISCARDS}},
Research-Areas = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Web-of-Science-Categories  = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Author-Email = {{lwise@ipma.pt}},
ResearcherID-Numbers = {{Fonseca, Paulo/A-5418-2008
   }},
ORCID-Numbers = {{Fonseca, Paulo/0000-0003-4177-8196
   Carvalho, Joao Paulo/0000-0003-0005-8299
   Silva, Cristina/0000-0002-0280-2213}},
Funding-Acknowledgement = {{European Union {[}265401]; national funds through Fundacao para a
   Ciencia e a Tecnologia (FCT) {[}UID/CEC/50021/2013]}},
Funding-Text = {{We would like to thank three anonymous reviewers for their useful
   comments and suggestions. The research leading to these results has
   received funding from the European Union's Seventh Framework Programme
   (FP7/2007-2013) under grant agreement no. 265401-EcoFishMan and was
   partially supported by national funds through Fundacao para a Ciencia e
   a Tecnologia (FCT) with reference UID/CEC/50021/2013.}},
Number-of-Cited-References = {{56}},
Times-Cited = {{2}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{19}},
Journal-ISO = {{ICES J. Mar. Sci.}},
Doc-Delivery-Number = {{CK4ZW}},
Unique-ID = {{ISI:000356232900002}},
OA = {{No}},
DA = {{2017-08-17}},
}

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