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Home Journals Annals of Botany Mitigating effects of well-timed rainfall on plant mortality

Mitigating effects of well-timed rainfall on plant mortality

Global warming accelerates plant water use, increasing plant susceptibility to drought death. From this, it can be hypothesised that higher CO2 concentrations slow plant water use, and should offset the warming effects on mortality.

Experimental set-up
Experimental set-up for Hovenden et al.

Using six years of data from a field experiment, Hovenden et al. demonstrate that the timing of rainfall has a major influence on the impacts of warming and elevated CO2 on plant mortality. Elevated CO2 moderated the increase in mortality caused by warming, but only in years with few dry spells. The timing of wet spells is shown to be a crucial determinant of how climate change influences plant mortality.

Annals of Botany Officehttp://aob.oxfordjournals.com
The Annals of Botany Office is based at the University of Oxford.

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