Document Detail


Characterizing fishing effort and spatial extent of coastal fisheries.
MedLine Citation:
PMID:  21206903     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Biodiverse coastal zones are often areas of intense fishing pressure due to the high relative density of fishing capacity in these nearshore regions. Although overcapacity is one of the central challenges to fisheries sustainability in coastal zones, accurate estimates of fishing pressure in coastal zones are limited, hampering the assessment of the direct and collateral impacts (e.g., habitat degradation, bycatch) of fishing. We compiled a comprehensive database of fishing effort metrics and the corresponding spatial limits of fisheries and used a spatial analysis program (FEET) to map fishing effort density (measured as boat-meters per km²) in the coastal zones of six ocean regions. We also considered the utility of a number of socioeconomic variables as indicators of fishing pressure at the national level; fishing density increased as a function of population size and decreased as a function of coastline length. Our mapping exercise points to intra and interregional 'hotspots' of coastal fishing pressure. The significant and intuitive relationships we found between fishing density and population size and coastline length may help with coarse regional characterizations of fishing pressure. However, spatially-delimited fishing effort data are needed to accurately map fishing hotspots, i.e., areas of intense fishing activity. We suggest that estimates of fishing effort, not just target catch or yield, serve as a necessary measure of fishing activity, which is a key link to evaluating sustainability and environmental impacts of coastal fisheries.
Authors:
Kelly R Stewart; Rebecca L Lewison; Daniel C Dunn; Rhema H Bjorkland; Shaleyla Kelez; Patrick N Halpin; Larry B Crowder
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-12-29
Journal Detail:
Title:  PloS one     Volume:  5     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2010  
Date Detail:
Created Date:  2011-01-05     Completed Date:  2011-07-05     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e14451     Citation Subset:  IM    
Affiliation:
Protected Resources Division, National Marine Fisheries Service, Southwest Fisheries Science Center, La Jolla, California, United States of America.
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MeSH Terms
Descriptor/Qualifier:
Animals
Conservation of Natural Resources*
Ecosystem
Environmental Monitoring
Fisheries*
Fishes
Geography
Oceans and Seas
Population Dynamics
Software
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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