Like students, plants give up after years of failure, too


By Famartin (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)%5D, via Wikimedia Commons
“The plant life of Australia’s outback may have “given up”, according to satellite-based maps tracking the impact of changing climatic conditions, such as rainfall and temperature, on the world’s ecosystems.

“The study suggests the vegetation of our interior does not respond to sudden increases in rainfall because it has “learned” that drought will soon follow. . . .

“‘Sometimes when you subject an ecosystem to some kind of disturbance, such as a drought or fire, they behave differently depending on their past,’ he explained. . . .

“‘They don’t care if it is good favourable conditions now, because they know it is temporary and it is not worth investing in growing more at this time because they become bigger and it is a lot more to care of when the drought returns,’ he said.”

–Dani Cooper, “Global satellite map highlights sensitivity of Australia’s plants to changes in rainfall and temperature” on ABC Science News

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