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dc.contributor.author Ambrose, Richard F. en
dc.contributor.author Engle, John M. en
dc.contributor.author Coyer, James A. en
dc.contributor.author Nelson, Bobette V. en
dc.date.accessioned 2011-02-11T23:13:23Z en
dc.date.available 2011-02-11T23:13:23Z en
dc.date.issued 1993 en
dc.identifier.citation Ambrose, Richard. F, John M. Engle, James A. Coyer, and Bobette V. Nelson. "Changes in Urchin and Kelp Densities at Anacapa Island, California." In: 3rd California Islands Symposium. 1987. 199-209. en
dc.identifier.uri http://hdl.handle.net/10139/3178 en
dc.description.abstract The densities of three species of sea urchins and the giant kelp (Macrocystis pyrifera) were monitored at a site near Anacapa Island, California. Although the study site had previously supported a dense kelp bed, from 1981-1983 it was dominated by urchins and coralline algae, and Macrocystis was restricted to a narrow band in shallow water. After limited recruitment in 1984, Macrocystis recruited heavily throughout the study site in 1985, resulting in an extensive kelp bed; the recruitment event was not accompanied by a sharp decline in urchin densities. However, high existing urchin densities, accompanied by unusually heavy urchin recruitment in 1985, resulted in the gradual decline of the kelp bed. By 1987, the kelp bed was again restricted to a narrow band in shallow water. en
dc.language.iso en_US en
dc.publisher National Park Service en
dc.subject California Islands en
dc.subject Channel Islands en
dc.subject kelp forest dynamics en
dc.subject urchin grazing en
dc.title Changes in Urchin and Kelp Densities at Anacapa Island, California en
dc.type Article en


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