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Article: Effects of experimental harvest on red sea urchins (Strongylocentrotus franciscanus) in northern Washington.
- Article from:
- Fishery Bulletin
- Article date:
- October 1, 2002
- Author:
CopyrightCOPYRIGHT 2002 National Marine Fisheries Service. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract--Commercial harvest of red sea urchins began in Washington state in 1971. Harvests peaked in the late 1980s and have since declined substantially in Washington and other areas of the U.S. west coast. We studied effects of experimental harvest on red sea urchins in San Juan Channel (SJC), a marine reserve in northern Washington. We recorded changes in density and size distribution of sea urchin populations resulting from three levels of experimental harvest: 1) annual size-selective harvest (simulating current commercial urchin harvest regulations), 2) monthly complete (non-size-selective) harvest, and 3) no harvest (control) sites. We also examined recolonization ...
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