Hopkins Marine Station Student Paper

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Title: Diversity and abundance of Polychaete and Sipunculid worms in the holdfasts of the giant kelp Macrocystis pyrifera of Hopkins Marine Life Refuge and Landels-Hill Big Creek Reserve.
Student Author(s): Fastenau, Jason
Faculty Advisor(s): Pearse, John
Pages: 13
Location: Senior Thesis UC Santa Cruz
Date: May 1996
Abstract: This study involves the examination of holdfasts of the giant kelp, Macrocystis pyrifera, in the Hopkins Marine Life Refuge (HMLR), and at the Landels-Hill Big Creek Reserve. The holdfasts were examined for both Polychaete and Sipunculid species diversity and abundance. The Polychaete diversity was considerably lower than expected, with several species heavily dominating the holdfasts. Polychaete abundance within the holdfasts was found to be highly variable, with no apparent link to holdfast size. It is also apparent that in order to obtain a accurate account of the species of worms in a given kelp bed it would be necessary to collect many more holdfasts.