Predator biodiversity strengthens herbivore suppression.

@article{Snyder2006PredatorBS,
  title={Predator biodiversity strengthens herbivore suppression.},
  author={William E. Snyder and Gretchen B Snyder and Deborah L Finke and Cory S. Straub},
  journal={Ecology letters},
  year={2006},
  volume={9 7},
  pages={789-96}
}
Species diversity at lower trophic levels generally improves ecosystem functioning. However, the impact of greater predator diversity on herbivore regulation is uncertain because predator species both compete with and prey on each other. In a large-scale field experiment we examined the relationship between predator species diversity and the suppression of two herbivores, green peach and cabbage aphids, on collard plants. We show that, for both aphid species, the strength of herbivore… CONTINUE READING

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