Reducing bycatch in the South African pelagic longline fishery: the utility of different approaches to fisheries closures

Grantham, Hedley S., Peterson, Samantha L. and Possingham, Hugh P. (2008) Reducing bycatch in the South African pelagic longline fishery: the utility of different approaches to fisheries closures. Endangered Species Research: international and multidisciplinary journal, 5 2-3: 291-299. doi:10.3354/esr00159


Author Grantham, Hedley S.
Peterson, Samantha L.
Possingham, Hugh P.
Title Reducing bycatch in the South African pelagic longline fishery: the utility of different approaches to fisheries closures
Journal name Endangered Species Research: international and multidisciplinary journal   Check publisher's open access policy
ISSN 1863-5407
1613-4796
Publication date 2008-12-01
Sub-type Article (original research)
DOI 10.3354/esr00159
Open Access Status DOI
Volume 5
Issue 2-3
Start page 291
End page 299
Total pages 9
Place of publication Oldendorf/Luhe, Germany
Publisher Inter-Research
Language eng
Abstract Seabirds, turtles and sharks are often of conservation concern because they are frequently bycatch in fisheries. Fisheries managers shifting from a target species focus to an ecosystem-based approach are being required to consider the impact of fisheries on non-target species. There are a range of complementary management tools that help reduce bycatch, such as gear restrictions, temporal restrictions, and bycatch reduction devices. One management approach that is increasingly being considered is fisheries closures. We tested the utility of 3 closure approaches for the improved protection of bycatch species in the South African pelagic longline fishery. As there was some variation where and when different groups of bycatch species were caught, we found that temporary spatial closures were the most effective strategy for both protecting bycatch and minimizing the cost to fishers. This is logical because having mobile closures in space and time provides more flexibility than permanent spatial closures or seasonal closures. However these benefits need to be traded off against the costs and problems of implementing temporary spatial closures. Of the 2 sub-optimal strategies, we discovered that seasonal closures are significantly less effective than spatial closures.
Keyword Bycatch
Marine protected area
Conservation planning
Ecosystem-based fisheries management
Fisheries closure
Threatened species
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes International and multidisciplinary jounal

 
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Created: Wed, 15 Apr 2009, 19:25:12 EST by Gail Walter on behalf of School of Biological Sciences