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Science 16 December 2005:
Vol. 310. no. 5755, p. 1737
DOI: 10.1126/science.310.5755.1737f
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Since the seminal work of MacArthur and Wilson on the theory of island biogeography, studies on this topic have focused mainly on the relation of species richness with island parameters such as area, distance, and habitat variability. The population biology of individual species in the island context has received much less attention. Schoener et al. (p. 1807; see the Perspective by Thorpe) report results from an experiment using Anolis lizards and an introduced lizard predator on small islands in the Bahamas archipelago. In the absence of the predator, there was a highly regular (decreasing) correlation of lizard survival to a key habitat variable (vegetation height). In the presence of the predator, the situation was nearly reversed, such that prey survival was highest in the tallest vegetation.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)