Ecological Archives E089-182-A6

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).


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.

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