Tree cover varies enormously across tropical ecosystems—from arid savannas to closed rain forests—and yet a general predictive theory of tropical tree cover remains elusive. Here we use the maximum‐entropy method to predict the most likely sample frequency distribution of ecosystems with different tree and grass fractional cover if balance between water supply and demand were the dominant constraint on community assembly. Assu...

Summary Biomass production for bioenergy may change soil microbes and influence ecosystem properties. To explore the impact of different bioenergy cropping systems on soil microorganisms, the compositions and quantities of soil microbial communities (16S rRNA gene) and N‐cycling functional groups ( nifH , bacterial amoA , archaeal amoA and nosZ genes) were assessed under maize, switchgrass and Miscanthus x giganteus at seven s...