References and Notes (original) (raw)

2016

Abstract

colonizes and rapidly dies. The upper end of sapling mortality and growth distributions in America is set by gap specialists: C. obtusifolia at BCI (12 % yearj1 mortality, 14 % yearj1 growth), C. sciadophylla at Yasuni (5.0% yearj1 mortality, 6.3 % yearj1 growth), and C. monostachya at La Planada (8.8 % yearj1 mortality, 8.2 % yearj1 growth). Diverse South-east Asian forests lacked species with such high rates (27). The most diverse tropical forests are the least diverse demographically. It remains plau-sible that demographic niches are packed more tightly in some forests than others, but this seems unlikely, because packing should depend only on population size and turnover, which do not vary much. Moreover, the successional-niche hypothesis is not favored by the strong peak in demographic rates near 1 to 2 % yearj1; if demographic niches were crucial, then rates ought to be spread evenly over the entire range (28). Instead, the similarity in demography of many species suggests tra...

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