Plant Call-to-Arms Against Climate Change : Discovery News

Florida's vegetation has changed its structure over the last century in response to rising atmospheric carbon dioxide and ecologists see the change as a plant-based call-to-arms, heralding dry times to come.

Plants breath in air and breath out moisture through tiny pores called stomata. Comparing a variety of contemporary plants growing in Florida with museum samples and peat bogs dating back 150 years ago, an international team of ecologists found that as the amount of carbon dioxide in the air has increased, the number of stomata on plants' leaves have decreased.
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The team predicts that further increases in carbon dioxide will halve the amount of water lost to the atmosphere.

That reduction in water could have serious effects on rainfall and other weather events.

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