Jean-Sébastien Lauzon-Guay, Robert E. Scheibling, and Myriam A. Barbeau. 2008. Formation and propagation of feeding fronts in benthic marine invertebrates: a modeling approach. Ecology 89:3150–3162.

Appendix F. Fit of the Gaussian distribution to daily displacement distance measured for Strongylocentrotus droebachiensis.

We parameterize the redistribution kernel using a frequency distribution of daily displacement distance measured for Strongylocentrotus droebachiensis at two rocky subtidal sites with weak currents (Dumont et al. 2006). A Gaussian distribution with a mean of 0 and a standard deviation of 1.33 provided the best fit (r² = 0.97) to the data (Fig. F1).

FIG. F1. Fit of the Gaussian redistribution kernel to the daily distance displaced by urchins, Strongylocentrotus droebachiensis, on a rocky bottom, observed by Dumont et al. (2006) (n = 48).

LITERATURE CITED

Dumont, C. P., J. H. Himmelman, and M. P. Russell. 2006. Daily movement of the sea urchin Strongylocentrotus droebachiensis in different subtidal habitats in eastern Canada. Marine Ecology Progress Series 317:87–99.