caa a22 4500 469097272 CHVBK 20180323133034.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00317226 doi (NATIONALLICENCE)springer-10.1007/BF00317226 Drought and biodiversity in Grasslands [Elektronische Daten] [D. Tilman, A. El Haddi] Summary: The local species richness of four different grassland fields fell an average of 37% during a 1988 drought that decreased above-ground living plant mass by an average of 47%. Despite the return to more normal plant mass and precipitation during the next two years, there was no significant recovery in species richness in the 46 permanent plots, suggesting that local species richness became recruitment limited. The drought led to the loss of annual species independent of their abundance. For perennial grasses, perennial forbs, legumes and woody species, the probability of a species being lost from a plot was significantly negatively correlated with its predrought abundance. These results demonstrate that environmentally extreme conditions can limit species richness by causing the local extinction of rare species. Because droughts of this intensity occur about every 50 years in the prairie, periodic drought may have limited prairie diversity. Moreover, if the accumulation of greenhouse gases leads to a more variable or extreme climate, it could cause increased rates of species extinctions. Springer-Verlag, 1992 Drought nationallicence Extinctions nationallicence Species richness nationallicence Diversity nationallicence Colonization nationallicence Tilman D. Department of Ecology, Evolution and Behavior, University of Minnesota, 318 Church St. SE, 55455, Minneapolis, MN, USA aut El Haddi A. Department of Ecology, Evolution and Behavior, University of Minnesota, 318 Church St. SE, 55455, Minneapolis, MN, USA aut Oecologia Springer-Verlag 89/2(1992-02-01), 257-264 0029-8549 89:2<257 1992 89 442 https://doi.org/10.1007/BF00317226 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317226 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tilman D. Department of Ecology, Evolution and Behavior, University of Minnesota, 318 Church St. SE, 55455, Minneapolis, MN, USA aut NATIONALLICENCE 700 1- El Haddi A. Department of Ecology, Evolution and Behavior, University of Minnesota, 318 Church St. SE, 55455, Minneapolis, MN, USA aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/2(1992-02-01), 257-264 0029-8549 89:2<257 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer