Bird predation on spiders: ecological mechanisms and evolutionary consequences.(Report)

From: Journal of Arachnology | Date: September 1, 2007| Author: | Copyright information

ABSTRACT. Birds are common predators of arthropods in many ecosystems but their impact on spiders has not been assessed. Therefore, the experimental evidence for bird predation effects on spider populations was examined. In particular, the present review focuses on the questions: what are the ecological mechanisms and what are the evolutionary consequences? Data from 17 field experiments, mainly in forest ecosystems, showed that spider communities were often significantly affected by bird predation. Comparisons of experimental effects were based on the ratio of mean density on ...

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