Coevolution of poisonous plants and large herbivores on rangelands.

  title={Coevolution of poisonous plants and large herbivores on rangelands.},
  author={William A. Laycock},
  journal={Journal of Range Management},
  • W. Laycock
  • Published 1 September 1978
  • Environmental Science
  • Journal of Range Management
Highlight: Early literature generally described toxic plant substances as waste products. However, more recent publications in entomology, plant biochemistry, and other fields suggest that toxic secondary compounds in plants may be defense systems against insects and other herbivores. The pertinence of these discussions to range management is the subject of this paper. If plant poisons have evolved as defense mechanisms, various ways that they might function include: (I) extreme toxicity; (2… 

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