András Kelemen, Péter Török, Orsolya Valkó, Tamás Miglécz and Béla Tóthmérész Mechanisms shaping plant biomass and species richness: plant strategies and litter effect in alkali and loess grasslands Journal of Vegetation Science 24
We found a humped-back relationship between total biomass and species richness. A negative litter effect on species richness was detected at much lower scores (from 400 g/m2) than reported in former studies. Our study revealed that litter can shape species richness along the whole biomass gradient, thus it is one of the major factors in structuring grassland biodiversity.
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