The Guardian | By: Calla Wahlquist | January 31, 2018:
Climate experiment shows trees release water but stop absorbing carbon in extreme heat.
Australian researchers growing trees in climate change conditions have found the leaves “sweat” to survive extreme heatwaves.
The year-long experiment showed that trees continue to release water through their leaves as an evaporative cooling system during periods of extreme heat, despite the carbon-fixing process of photosynthesis grinding to a halt.
Previously, scientists believed that photosynthesis and transpiration – the process of releasing water – were linked, meaning one would not occur without the other.
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