7 Exploitation

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Unformatted text preview: logy Harvesting of coral reef sharks in Australia Study examined abundance of 6 species of sharks on the Great Barrier Reef in open-fishing (OF), No-Take (NT), Limited Fishing (LF) and No-Entry (NE) zones. BIO 3115 Université d’Ottawa / University of Ottawa Inferred effects of exploitation Dramatic reduction in abundance along a gradient from NE to OF, consistent with hypothesis that abundance is determined by fishing pressure. BIO 3115 Université d’Ottawa / University of Ottawa M7.6 BIO 3115 Conservation Biology Is harvesting sustainable? Estimates of population growth rate for whitetip (A) and grey sharks (B) both show that harvesting rates are unsustainable (estimated growth rate < 1) BIO 3115 Université d’Ottawa / University of Ottawa Global decline in marine predatory fish biodiversity Study examined commercial catch records for large predatory fish (skates, rays, sharks, cod, tuna, billfish, swordfish, etc.) based on catch records from 1952 to 2000. BIO 3115 Université d...
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This document was uploaded on 03/11/2014 for the course BIO 3115 at University of Ottawa.

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