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An increasing body of evidence indicates that the association between different plant species may lead to a reduction in insect herbivory, i.e. associational resistance. This might be due to a top–down regulation of herbivores by increased numbers of natural enemies or to a disruptive bottom–up influence of lower host plant accessibility. In particular, the richer plant communities release more diverse...
A first study on the biodiversity of non-vascular epiphytes in cacao (Theobroma cacao L.) plantations in western Ecuador yielded 112 species (51 bryophytes, 61 lichens). Epiphyte assemblages of cacao plantations resembled those of tropical rain forests but species richness was usually lower and individual species were found at lower heights on the trunks. The vast majority of the species are widespread...
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