a marine scientist specializing in fisheries management who resides in Umbria, Italy. Paul Dayton and Jeremy Jackson are marine ecologists at the Scripps Institution of Oceanography, University of Calif omia San Diego, La Jolla, California 92037, USA. e-mail: [email protected] The authors declare compe

a marine scientist specializing in fisheries management who resides in Umbria, Italy. Paul Dayton and Jeremy Jackson are marine ecologists at the Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92037, USA. e-mail: [email protected] The authors declare compe

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