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Effects of fishing on tropical reef associated shark populations on the Great Barrier Reef

Heupel, M.R. and Williams, A.J. and Welch, D.J. and Ballagh, A. and Mapstone, B.D. and Carlos, G. and Davies, C. and Simpfendorfer, C.A. (2009) Effects of fishing on tropical reef associated shark populations on the Great Barrier Reef. Fisheries Research, 95 (2-3). pp. 350-361.

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Article Link(s): http://dx.doi.org/10.1016/j.fishres.2008.10.005

Publisher URL: http://www.elsevier.com

Abstract

Three data sets were examined to define the level of interaction of reef associated sharks with the commercial Coral Reef Fin Fish Fishery within the Great Barrier Reef (GBR). Data were examined from fishery logbooks, an observer program within the fishery and a fishery-independent survey conducted as part of the Effects of Line Fishing (ELF) Experiment. The majority of the identified catch was comprised of grey reef (62-72%), whitetip reef (16-29%) and blacktip reef (6-13%) sharks. Logbook data revealed spatially and temporally variable landings of shark from the GBR. Catch per unit effort (CPUE) through time was stable for the period from 1989 to 2006 with no evidence of increase or decline. Data from observer and ELF data sets indicated no differences in CPUE among regions. The ELF data set demonstrated that CPUE was higher in Marine National Park zones (no fishing) when compared to General Use zones (open to fishing). The ongoing and consistent catches of reef sharks in the fishery and effectiveness of no-fishing zones suggest that management zones within the GBR Marine Park are effective at protecting a portion of the reef shark population from exploitation.

Item Type:Article
Additional Information:© Elsevier B.V.
Keywords:Coral reef fishery; reef shark; Carcharhinus; effects of fishing; logbook; bycatch; marine protected areas; Atlantic Ocean; Carcharhinus-Amblyrhynchos; northwest Atlantic; Hawaiian-islands; fishery; Australia; collapse; attacks; caught.
Subjects:Science > Statistics > Statistical data analysis
Aquaculture and Fisheries > Fisheries > Fishery research
Aquaculture and Fisheries > Fisheries > Fishery conservation
Deposited On:11 Feb 2009 03:31
Last Modified:07 Sep 2010 04:26

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