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Science 5 August 1983:
Vol. 221. no. 4610, pp. 570 - 572
DOI: 10.1126/science.221.4610.570
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Articles

Population Density of Tropical Forest Frogs: Relation to Retreat Sites

MARGARET M. STEWART 1 and F. HARVEY POUGH 2

1 Department of Biological Sciences, State University of New York at Albany, Albany 12222
2 Section of Ecology and Systematics, Cornell University, Ithaca, New York 14853

The forest frog Eleutherodactylus coqui defends specific sites for retreats and nests in the Luquillo Forest, Puerto Rico. The hypothesis that shortages of nest and retreat sites limit population size was tested by placing 100 bamboo frog houses in plots measuring 100 square meters in areas of high frog density. These new sites were readily adopted by adult frogs. After one year, experimental plots had significantly more nests and frogs of all sizes than did control plots.

Submitted on December 9, 1982
Revised on May 9, 1983


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