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Higher River Levels Predicted As More Carbon Dioxide Makes Plants Less Thirsty

Date:
September 11, 2007
Source:
University of Exeter
Summary:
Rising carbon dioxide levels will increase river levels in the future. The findings suggest that increasing carbon dioxide will cause plants to extract less water from the soil, leaving more water to drain into rivers which will add to the river flow increases already expected due to climate change.

Researchers expect that increasing carbon dioxide will cause plants to extract less water from the soil, leaving more water to drain into rivers which will add to the river flow increases already expected due to climate change.
Credit: Michele Hogan

Rising carbon dioxide levels will increase river levels in the future, according to a team of scientists from the Met Office Hadley Centre, the University of Exeter and the Centre for Ecology & Hydrology.

The findings, published on 30 August 2007 in the journal Nature, suggest that increasing carbon dioxide will cause plants to extract less water from the soil, leaving more water to drain into rivers which will add to the river flow increases already expected due to climate change.

Last year, members of the research team showed that this effect can already be seen in historical river flow records.

This new study shows that the effect of plant responses to carbon dioxide could be as important as those of increased rainfall due to man-made climate change.

Co-author Peter Cox, Professor of Climate System Dynamics in the University’s School of Engineering, Computing and Mathematics said: "Plants become more economical with water as carbon dioxide increases. We must factor this effect into predictions of future water resources if we are to make good decisions about climate change adaptation."


Story Source:

The above story is based on materials provided by University of Exeter. Note: Materials may be edited for content and length.


Cite This Page:

University of Exeter. "Higher River Levels Predicted As More Carbon Dioxide Makes Plants Less Thirsty." ScienceDaily. ScienceDaily, 11 September 2007. <www.sciencedaily.com/releases/2007/09/070905083617.htm>.
University of Exeter. (2007, September 11). Higher River Levels Predicted As More Carbon Dioxide Makes Plants Less Thirsty. ScienceDaily. Retrieved September 21, 2014 from www.sciencedaily.com/releases/2007/09/070905083617.htm
University of Exeter. "Higher River Levels Predicted As More Carbon Dioxide Makes Plants Less Thirsty." ScienceDaily. www.sciencedaily.com/releases/2007/09/070905083617.htm (accessed September 21, 2014).

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