Plant respiration adapts to global warming

Plant respiration adapts to global warming

Until now, scientists believed that rising temperatures would cause trees to emit much more carbon dioxide, which would mean a constant feedback between plant respiration and global warming: at higher temperatures, more CO2 in the atmosphere, and higher CO2, more temperature.

However, a new study published in the journal Nature shows that trees are able to adapt their breathing to increases in temperature. This would imply that they play a less important role than previously suggested in accelerating climate change.

The international team of researchers examined ten North American tree species under forest conditions over a period of three to five years during which there was a warming of 3.4 ° C. The trees adapted to this change and their respiration only increased by 5%, compared to the 23% that scientists expected in the event that no acclimatization occurred.

Photo: Artur Stefanski

SINC Agency

Video: Nicolas Glynos: Using oaks to study morphological adaptations to climate change (July 2021).