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We used manipulative field exclusion experiments to investigate the effects of dung beetles on the spatial aggregation of emerging seedlings of two tropical tree species. The results provide the first direct demonstration that tropical dung beetles reduce seedling clustering, with important implications for plant densities and demography.
Conspecific negative density dependence (CNDD) is one of the main mechanisms influencing diversity maintenance in tropical forests. Tropical highland forests, in contrast to most lowland forests, are commonly dominated by a few tree species, and testing the importance of density dependence effects on seedling establishment of dominant trees may provide insights on the mechanisms regulating population...
We examined predispersal granivory in common and rare bird‐dispersed plants in two tropical and two temperate communities. Our results show that the prevalence and intensity of predispersal granivory are higher in tropical communities and for smaller seeds. Results also show no effect of plant species’ relative abundance on granivory.
Abstract in Spanish is available with online material.
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