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

Heupel, M.R., Williams, A.J., Welch, D.J., Ballagh, A., Mapstone, B.D., Carlos, G., 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). pp. 350-361.

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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 ID: 7976
Item Type: Article (Refereed Research - C1)
Keywords: coral reef fishery; reef shark; Carcharhinus; effects of fishing; logbook; bycatch
ISSN: 1872-6763
Funders: Great Barrier Reef Marine Park Authoity, CRC Reef Research Centre, Queensland Department of Primary Industries and Fisheries, Fisheries Research and Development Corporation, James Cook University
Date Deposited: 26 Jan 2010 22:36
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050209 Natural Resource Management @ 33%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070403 Fisheries Management @ 33%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070499 Fisheries Sciences not elsewhere classified @ 34%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8302 Fisheries - Wild Caught > 830299 Fisheries- Wild Caught not elsewhere classified @ 100%
Citation Count from Web of Science Web of Science 25
Downloads: Total: 10
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