Date of Award

1974

Document Type

Thesis

Degree Name

Master of Science (M.S.)

Department

Marine Sciences

First Advisor

Steven Obrebski

First Committee Member

Victor Loosanoff

Second Committee Member

Edmund H. Smith

Third Committee Member

James A. Blake

Fourth Committee Member

Dwight W. Taylor

Abstract

Life history patterns of individual organisms are the result of natural selection and should be correlated with particular physical and biological characteristics of habitats in which they live. The littoral fringe is known to be the most severe physical habitat in the intertidal zone, and it is expected that organisms in it should have population characteristics associated with selective response to physical adversity rather than biological interaction. Ecological studies of populations of Littorina planaxis were made in the Dillon Beach and Bodega Head areas. The study localities differed principally in extent of wave exposure rather than geographical location.

Pages

159

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