(full paper is archived in the Miller Library)
Title: The effect of substrate on movement and density of the snail Littorina planaxis
Student Author(s): Fox, Christine
Faculty Advisor(s): Denny, Mark
%E Watanabe, Jim
Location: Final Papers Biology 175H
Date: June 1995
Abstract: Littorina planaxis, an intertidal snail, is abundant on a variety of substrata. Two rocks, granite and basalt, were examined to determine if the rock type or the roughness of the rock influenced the movement pattern or population density of the snail. A diffusion model was used to quantify the spread of the snail across the rock in rough, intermediate and smooth areas on each rock type. Additionally, the fractal dimension of the rock was measured on each site in an attempt to quantify the topography of the rock and to provide a less subjective estimate of roughness or smoothness.