Herbivores Rule

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Science  30 Jul 2004:
Vol. 305, Issue 5684, pp. 619-621
DOI: 10.1126/science.1101848

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For decades, ecologists have strived to elucidate the causes of high species diversity in tropical regions. In his Perspective, Marquis discusses the results of a recent field study in the Peruvian Amazon ( Fine et al.) that clearly demonstrates how herbivorous predators, such as insects, influence tropical forest diversity by reinforcing specialization of plant species to different soil habitats.