Fitness components versus total demographic effects: evaluating herbivore impacts on a perennial herb.

@article{Ehrln2003FitnessCV,
  title={Fitness components versus total demographic effects: evaluating herbivore impacts on a perennial herb.},
  author={Johan Ehrl{\'e}n},
  journal={The American naturalist},
  year={2003},
  volume={162 6},
  pages={796-810}
}
I examined the long-term effects of cryptic mollusk herbivory on seven fitness components in the perennial herb Lathyrus vernus and also calculated measures of total fitness effects. Natural correlations and experimental exclusion of mollusks showed that herbivory is associated with an increased probability of dying or staying dormant, poorer growth, and a lower probability of flowering. The average yearly reduction in population growth rate (lambda) caused by mollusks in the experiment was 0… CONTINUE READING

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