CO2 helps cancel drying out of grasslands

Australian Broadcasting Corporation: Balancing act As the climate changes, warmer temperatures will dry out grasslands but raised CO2 levels will offset this by making plants more efficient at using water, say researchers. Biogeochemist, Dr Feike Dijkstra, from the University of Sydney, and colleagues report their findings today in the journal Nature. "We found that when you have elevated CO2 combined with warming, that elevated CO2 completely offsets the drying effect of warming," says Dijkstra. Rising temperatures are known......

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