SCATMAN
Tests the hypothesis of prey-selectivity based on random samples of predator scats.
Link, W.A. and Karanth, K.U. (1994). Correcting for overdispersion in tests
of prey selectivity. Ecology 75: 2456-2459.
Run SCATMAN online
REFERENCES
Chesson, J. (1989). The effect of alternative prey on the functional response of Notonecta
hoffmani . Ecology 70: 1227-1235.
Link, W.A. and Karanth, K.U. (1994). Correcting for overdispersion in tests of prey selectivity.
Ecology 75: 2456-2459.
Manly, B.F.J., Miller, P., and Cook, L.M. (1972). Analysis of a selective predation experiment.
American Naturalist 106: 719-736.
If you have questions, problems or comments with this program please contact:
Jim Hines via jhines@usgs.gov
or snail mail to:
Jim Hines
U.S. Geological Survey
Patuxent Wildlife Research Center
12100 Beech Forest Rd. #212
Laurel, Md. 20708-4039
Phone:(301)497-5661
Sample Data
species frequency μ-dens σ-dens μ-scat
SBR 118.5 1.8 0.62 22.553
PIG 35 1.28 .23 11.48
CHT 143 5.94 .81 14.085
GAR 82.5 .84 .34 23.867
MJK 24 3.8 1.55 7.463
LGR 16 4.77 .63 3.54
Input Data
Enter the number of iterations for the bootstrap variance estimation:
Enter a seed number for the bootstrap variance estimation:
(enter 0 for a random seed)
run
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