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Bottom Trawling and Dredging by Marine Ecoregion

Dates

Original Data Basin Creation Date
2011-11-03 18:00:00
Original Data Basin Modified Date
2014-04-07 10:06:13

Summary

Amount of fish and shellfish caught using bottom trawling and dredging (1955-2004), by marine ecoregion. The map shows trawling and dredging fishing pressure by marine ecoregion between 1955 and 2004, using fish and shellfish catch data from the University of British Columbia (SAUP 2007). Our analysis of the catch data was limited to species caught by bottom trawl or dredge gear (Watson et al. 2006a). We calculated the annual total tonnage of catch for all species caught by these gears in each ecoregion. To account for recovery of benthic systems over time, we applied a decay factor of 2 percent for each year before 2004 to the total catch (implying a full recovery in fifty years). We then calculated the cumulative total catch for [...]

Contacts

Data Owner :
TNC GIS Staff
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  • Data Basin

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Provenance

Data source
<a href="http://nature.org">The Nature Conservancy</a>
Harvested on Fri May 23 09:38:10 MDT 2014 from Data Basin Service

Additional Information

Identifiers

Type Scheme Key
UniqueKey Data Basin ef537b0e4a764e01beb3e8fce3d5a14f

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