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Journal of Animal Ecology 2006
 

Summary: Journal of Animal
Ecology 2006
75, 350­357
© 2006 The Authors.
Journal compilation
© 2006 British
Ecological Society
Blackwell Publishing Ltd
Contrasting cascades: insectivorous birds increase pine but
not parasitic mistletoe growth
KAILEN A. MOONEY* and YAN B. LINHART
University of Colorado, Department Ecology and Evolutionary Biology, Boulder, CO 80309-0334, USA
Summary
1. Intraguild predation occurs when top predators feed upon both intermediate
predators and herbivores. Intraguild predators may thus have little net impact on her-
bivore abundance. Variation among communities in the strength of trophic cascades
(the indirect effects of predators on plants) may be due to differing frequencies of
intraguildpredation.Lessisknownabouttheinfluenceof variationwithincommunities
in predator­predator interactions upon trophic cascade strength.
2. We compared the effects of a single predator community between two sympatric

  

Source: Agrawal, Anurag - Department of Ecology and Evolutionary Biology & Entomollogy, Cornell University

 

Collections: Environmental Sciences and Ecology