Geometry and scale in species–area relationships

Last year, I blogged about a Nature paper by Fangliang He and Stephen Hubbell, which claims that conventional extinction predictions based on species-area relationships are overestimated. They suggest extinction-area relationships as more appropriate to estimate extinction risk from habitat loss. My old post can be found here. After two short replies by Brooks and colleagues…

Diversity-prodictivity relationship revisited

A recent paper by P. Adler et al., “Productivity Is a Poor Predictor of Plant Species Richness” deals with the relationship between productivity and diversity. The authors examine an old and, not surprisingly, debated doctrine of ecology, which is that there is generally a hump-shaped relationship between productivity and diversity (as an example of such…

Controversy about species-area versus endemics-area relationships for calculating extinction rates

I’m lagging a little behind the news, but maybe it’s also an advantage to write about this issue after the first smoke has cleared. The topic is a paper by Fangliang He and Stephen Hubbell that appeared in Nature two weeks ago and that has sparked considerable controversy. Basically, the authors claim that “conventional” extinction…