Warning signals of biodiversity collapse across gradients of tropical forest loss.

摘要: We evaluate potential warning signals that may aid in identifying the proximity of ecological communities to biodiversity thresholds from habitat loss—often termed “tipping points”—in tropical forests. used datasets studies Neotropical mammal, frog, bird, and insect communities. Our findings provide only limited evidence an increase variance (heteroskedasticity) biodiversity-related parameters can a general signal impending threshold changes communities, as forest loss increases. However, such apparent effect was evident for amphibians Brazilian Atlantic Forest Amazonian mammal bird suggesting some species assemblages might be predictable. consider signs help forecast drastic biodiversity.