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The importance of habitat quality for marine reserve fishery linkages

Rodwell, L D, Barbier, E B, Roberts, C M and McClanahan, T R (2003) The importance of habitat quality for marine reserve fishery linkages. Canadian Journal of Fisheries and Aquatic Sciences. pp. 171-181. ISSN 0706-652X

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We model marine reserve - fishery linkages to evaluate the potential contribution of habitat-quality improvements inside a marine reserve to fish productivity and fishery catches. Data from Mombasa Marine National Park, Kenya, and the adjacent fishery are used. Marine reserves increase total fish biomass directly by providing refuge from exploitation and indirectly by improving fish habitat in the reserve. As natural mortality of the fish stock decreases in response to habitat enhancement in the reserve, catches increase by up to 2.6 tonnes (t).km(-2).year(-1) and total fish biomass by up to 36 t.km(-2). However, if habitat-quality improvement reduces the propensity of fish to move out of the reserve, catches may fall by up to 0.9 t.km(-2).year(-1). Our results indicate that habitat protection in reserves can underpin fish productivity and, depending on its effects on fish movements, augment catches.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2003 NRC Canada
Institution: The University of York
Academic Units: The University of York > Environment (York)
Depositing User: Sherpa Assistant
Date Deposited: 22 Mar 2005
Last Modified: 24 Apr 2016 23:27
Published Version: http://dx.doi.org/10.1139/F03-009
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/342

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