AustralieFrV1, Main, Exploration, bibRecord, 006187

Critical thresholds and tangible targets for ecosystem-based management of coral reef fisheries

Identifieur interne : 006187 ( Main/Exploration ); précédent : 006186; suivant : 006188

Critical thresholds and tangible targets for ecosystem-based management of coral reef fisheries

Auteurs : Tim R. Mcclanahan [États-Unis] ; Nicholas A. J. Graham [Australie] ; M. Aaron Macneil [Australie] ; Nyawira A. Muthiga [États-Unis] ; Joshua E. Cinner [États-Unis, Australie] ; J. Henrich Bruggemann [France] ; Shaun K. Wilson [Australie]

Source :

Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2011.

RBID : PMC:3193203

Abstract

Sustainably managing ecosystems is challenging, especially for complex systems such as coral reefs. This study develops critical reference points for sustainable management by using a large empirical dataset on the coral reefs of the western Indian Ocean to investigate associations between levels of target fish biomass (as an indicator of fishing intensity) and eight metrics of ecosystem state. These eight ecological metrics each exhibited specific thresholds along a continuum of fishable biomass ranging from heavily fished sites to old fisheries closures. Three thresholds lay above and five below a hypothesized window of fishable biomass expected to produce a maximum multispecies sustainable yield (B_MMSY). Evaluating three management systems in nine countries, we found that unregulated fisheries often operate below the B_MMSY, whereas fisheries closures and, less frequently, gear-restricted fisheries were within or above this window. These findings provide tangible management targets for multispecies coral reef fisheries and highlight key tradeoffs required to achieve different fisheries and conservation goals.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3193203

DOI: 10.1073/pnas.1106861108
PubMed: 21949381
PubMed Central: 3193203

Affiliations:

Le document en format XML

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Serveur d'exploration sur les relations entre la France et l'Australie

Critical thresholds and tangible targets for ecosystem-based management of coral reef fisheries

Critical thresholds and tangible targets for ecosystem-based management of coral reef fisheries

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