Evaluating management strategies to implement the recovery plan for Iberian hake (Merluccius merluccius); the impact of censored catch information. Jardim, E., Cervino, S., & Azevedo, M. ICES JOURNAL OF MARINE SCIENCE, 67(2):258-269, OXFORD UNIV PRESS, GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND, MAR, 2010. doi abstract bibtex Iberian hake assessment revealed an increase in. shing mortality (F) despite enforcement of a recovery plan. Recent landings exceeded the total allowable catch and discarding rates were high. Alternative management strategies based on F control were evaluated with respect to the probability of recovering spawning-stock biomass (SSB), expected profits, and robustness to uncertainty on catch information and stock dynamics. Results showed that the use of censored catch data, i.e. excluding the Gulf of Cadiz or discards, may lead to inappropriate conclusions. Reducing. shing mortality was necessary for SSB to recover. An F(max) strategy with discard reduction showed the highest probability of rebuilding SSB and led the fishery to sustainable exploitation, with an expected %SPR of 30-40% in 2025, mean individual weight in the landings of 450 g in 2015, and yield increasing by >20%. Because of uncertainty in the estimates of maximum sustainable yield, management strategies based on FMSY were least robust, but all strategies were robust to alternative stock-recruit models.
@article{ ISI:000274341200006,
Author = {Jardim, Ernesto and Cervino, Santiago and Azevedo, Manuela},
Title = {{Evaluating management strategies to implement the recovery plan for
Iberian hake (Merluccius merluccius); the impact of censored catch
information}},
Journal = {{ICES JOURNAL OF MARINE SCIENCE}},
Year = {{2010}},
Volume = {{67}},
Number = {{2}},
Pages = {{258-269}},
Month = {{MAR}},
Abstract = {{Iberian hake assessment revealed an increase in. shing mortality (F)
despite enforcement of a recovery plan. Recent landings exceeded the
total allowable catch and discarding rates were high. Alternative
management strategies based on F control were evaluated with respect to
the probability of recovering spawning-stock biomass (SSB), expected
profits, and robustness to uncertainty on catch information and stock
dynamics. Results showed that the use of censored catch data, i.e.
excluding the Gulf of Cadiz or discards, may lead to inappropriate
conclusions. Reducing. shing mortality was necessary for SSB to recover.
An F(max) strategy with discard reduction showed the highest probability
of rebuilding SSB and led the fishery to sustainable exploitation, with
an expected \%SPR of 30-40\% in 2025, mean individual weight in the
landings of 450 g in 2015, and yield increasing by >20\%. Because of
uncertainty in the estimates of maximum sustainable yield, management
strategies based on FMSY were least robust, but all strategies were
robust to alternative stock-recruit models.}},
Publisher = {{OXFORD UNIV PRESS}},
Address = {{GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Jardim, E (Reprint Author), IPIMAR Inst Nacl Recursos Biol, Ave Brasilia, P-1449006 Lisbon, Portugal.
Jardim, Ernesto; Azevedo, Manuela, IPIMAR Inst Nacl Recursos Biol, P-1449006 Lisbon, Portugal.
Cervino, Santiago, Inst Espanol Oceanog, Vigo 36201, Spain.}},
DOI = {{10.1093/icesjms/fsp233}},
ISSN = {{1054-3139}},
Keywords = {{discards; Iberian hake; management strategy evaluation; operating model}},
Keywords-Plus = {{EXPERIENCE; SIMULATION; GROWTH}},
Research-Areas = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Web-of-Science-Categories = {{Fisheries; Marine \& Freshwater Biology; Oceanography}},
Author-Email = {{ernesto@ipimar.pt}},
ORCID-Numbers = {{cervino, santiago/0000-0003-4146-0890}},
Funding-Acknowledgement = {{European Commission {[}1543/2000, 1639/2001, 1581/2004]}},
Funding-Text = {{We thank Luis Silva (IEO) for providing the data on the GoC, Neli Pereda
(IEO) for the discards data from the Spanish trawl fleet, Graca Pestana
(IPIMAR) for the discard data from the Portuguese trawl fleet, Laurie
Kell (ICCAT) and Fatima Cardador (IPIMAR) for support and valued
comments, and Verena Trenkel and Malcolm Haddon for their exhaustive
revision of the manuscript. Data collection after 2001 was funded under
the framework of the European Commission's Data Collection Regulation
(Reg. EC No. 1543/2000, 1639/2001, and 1581/2004). The work was carried
out within the scope of IPIMAR's project NeoMAv (QCA-3/MARE-FEDER,
http://ipimar-iniap. ipimar. pt/neomav).}},
Number-of-Cited-References = {{22}},
Times-Cited = {{6}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{11}},
Journal-ISO = {{ICES J. Mar. Sci.}},
Doc-Delivery-Number = {{553CB}},
Unique-ID = {{ISI:000274341200006}},
OA = {{No}},
DA = {{2017-08-17}},
}
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Recent landings exceeded the total allowable catch and discarding rates were high. Alternative management strategies based on F control were evaluated with respect to the probability of recovering spawning-stock biomass (SSB), expected profits, and robustness to uncertainty on catch information and stock dynamics. Results showed that the use of censored catch data, i.e. excluding the Gulf of Cadiz or discards, may lead to inappropriate conclusions. Reducing. shing mortality was necessary for SSB to recover. An F(max) strategy with discard reduction showed the highest probability of rebuilding SSB and led the fishery to sustainable exploitation, with an expected %SPR of 30-40% in 2025, mean individual weight in the landings of 450 g in 2015, and yield increasing by >20%. 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Results showed that the use of censored catch data, i.e.\n excluding the Gulf of Cadiz or discards, may lead to inappropriate\n conclusions. Reducing. shing mortality was necessary for SSB to recover.\n An F(max) strategy with discard reduction showed the highest probability\n of rebuilding SSB and led the fishery to sustainable exploitation, with\n an expected \\%SPR of 30-40\\% in 2025, mean individual weight in the\n landings of 450 g in 2015, and yield increasing by >20\\%. 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