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Plant traits – the morphological, anatomical, physiological, biochemical and phenological characteristics of plants and their organs – determine how primary producers respond to environmental factors, affect other trophic levels, influence ecosystem processes and services and provide a link from species richness to ecosystem functional diversity. Trait data(More)
A trade-off between growth and mortality rates characterizes tree species in closed canopy forests. This trade-off is maintained by inherent differences among species and spatial variation in light availability caused by canopy-opening disturbances. We evaluated conditions under which the trade-off is expressed and relationships with four key functional(More)
Tropical forest biodiversity is declining, but the resulting effects on key ecosystem services, such as carbon storage and sequestration, remain unknown. We assessed the influence of the loss of tropical tree species on carbon storage by simulating 18 possible extinction scenarios within a well-studied 50-hectare tropical forest plot in Panama, which(More)
1 We hypothesized that severe drought affects the structure of tropical forests by favouring seedlings of some species or groups at the expense of others. To test this hypothesis, we irrigated naturally occurring woody seedlings during an El Niño-related drought in seasonal moist tropical forest on Barro Colorado Island, Panama. We predicted that irrigated(More)
Comparative analyses that link information on species' traits, environmental change, and organism response have rarely identified unambiguous trait correlates of vulnerability. We tested if species' traits could predict local-scale changes in dung beetle population response to three levels of forest conversion intensity within and across two biogeographic(More)
2.1.1 Two meta-analyses of biodiversity studies published in 2006 The study of patterns in the distribution and abundance of species in relation to environmental variables in nature (e.g. Whittaker 1975), and to species interactions (Krebs 1972), has had a long tradition in ecology. With increasing concern about the consequences of environmental change for(More)
At large spatial scales, exotic and native plant diversity exhibit a strong positive relationship. This may occur because exotic and native species respond similarly to processes that influence diversity over large geographical areas. To test this hypothesis, we compared exotic and native species-area relationships within six North American ecoregions. We(More)
At more than a dozen locations along the coast of Washington, Oregon, and northern California, there is evidence of coseismic land surface lowering (due mainly to subsidence and partially to liquefaction) and tsunamis (Atwater et al., 1995); all are attributed to earthquake(s) along the Cascadia subduction zone (Fig. 1). Part of the evidence is the burial(More)