WASHINGTON (Reuters) - Fast-growing weeds have evolved over a few generations to adapt to climate change, which could signal the start of an "evolution explosion" in response to global warming, scientists reported on Monday.
This means that the weeds will likely keep up with any attempts to develop crops that can adapt to global warming, said Arthur Weis, a professor of ecology and evolutionary biology at the University of California, Irvine.
But some long-lived species -- like the venerated California redwood tree, with a life-span of hundreds of years -- will not have the capacity to adapt so quickly, because their life cycles are so long, Weis said in a telephone interview.
The quick-growing weedy plant known as field mustard showed the ability to change reproductive patterns over a period of just seven years, Weis said. "If you take a climate shift, such as we've had here in southern California, in a very few number of generations you can get a change in ecologically important traits that can allow these fast-growing weedy species to hang on and actually do well despite the change in environments," he said.
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