| Spatial patterns of fishing effort off San Diego: implications for zonal management and ecosystem function. | |
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MedLine Citation:
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PMID: 21265452 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The essence of ecosystem-based management is managing human practices to conserve the ecosystem. Ecologists focus on understanding the ecosystem, but there are fundamental information gaps including patterns of human exploitation. In particular, the spatial distribution of fishing effort must be known at the scales needed for ecologically relevant management. Fishing is a primary impact on coastal ecosystems, yet catch distribution at scales relevant to habitats and processes are not well known for many fisheries. Here we utilized photographic time series, logbook records, and angler surveys to estimate the intensity and spatial pattern of commercial and recreational fishing. Effort was clearly aggregated for most types of fishing, the motivating factors for effort distribution varied among areas, and effort was coupled or uncoupled to habitat depending on the area and type of fishing. We estimated that approximately 60% and approximately 74% of private recreational and recreational charter vessel fishing effort, respectively, were concentrated into two small areas that also included approximately 78% of commercial sea urchin effort. Exploitation and effort were considerably greater in one kelp forest, which has important implications for patterns of kelp persistence, productivity, and ecosystem function. Areas subject to the greatest recreational fishing pressure appeared to have lower diversity. Our results indicate that fine-scale patterns of fishing effort and exploitation have profound consequences for ecosystem functioning and biodiversity. 'Ecosystem-based management of nearshore ecosystems depends on an understanding of the fine-scale patterns of exploitation. |
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Authors:
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P Ed Parnell; Paul K Dayton; Rachelle A Fisher; Cina C Loarie; Ryan D Darrow |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Ecological applications : a publication of the Ecological Society of America Volume: 20 ISSN: 1051-0761 ISO Abbreviation: Ecol Appl Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2011-01-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889808 Medline TA: Ecol Appl Country: United States |
Other Details:
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Languages: eng Pagination: 2203-22 Citation Subset: IM |
Affiliation:
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Scripps Institution of Oceanography, Integrative Oceanography Division, Mail Code 0227, University of California-San Diego, 9500 Gilman Drive, La Jolla, California 92093-0227, USA. edparnell@ucsd.edu |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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