神马文学网Scientific American: Plants Don‘t Like Greenhouse Effect
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Plants Don‘t Like Greenhouse Effect
Fossil remains indicate that insects actually eat more plant material when the planet is warmer. Karen Hopkin reports.
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Seems like every week brings news that global warming is goingto be bad for some poor animal or other. But plants? Well, I guess Iwas thinking that plants would welcome the heat. I mean, global warmingis caused by greenhouse gases. And plants live in greenhouses. Soeveryone’s happy. Well, according to a new study, published in theFebruary 12 issue of the Proceedings of the National Academy ofSciences, I was wrong. Or at least not quite right. Because plants,too, are likely to face problems as the earth heats up. And theirbiggest problem is likely to be: insects.
Scientists were looking at the fossilized remains of leaves that felloff trees about 55 million years ago. At that time, the planet wasundergoing a period of warming. The scientists found that as thetemperatures rose, the leaves looked more…nibbled. Seems that with moreCO2 in the atmosphere, plants take up more carbon. That actually makestheir leaves less nutritious for plant-munching bugs—so the insectsjust eat more. So, a warmer planet will be home to some hungry bugs.Which I daresay will not please the trees. Or anyone else who relies onplants for food—which includes, ultimately, all of us.
—Karen Hopkin
Fossil remains indicate that insects actually eat more plant material when the planet is warmer. Karen Hopkin reports.
',1)">
Download
Seems like every week brings news that global warming is goingto be bad for some poor animal or other. But plants? Well, I guess Iwas thinking that plants would welcome the heat. I mean, global warmingis caused by greenhouse gases. And plants live in greenhouses. Soeveryone’s happy. Well, according to a new study, published in theFebruary 12 issue of the Proceedings of the National Academy ofSciences, I was wrong. Or at least not quite right. Because plants,too, are likely to face problems as the earth heats up. And theirbiggest problem is likely to be: insects.
Scientists were looking at the fossilized remains of leaves that felloff trees about 55 million years ago. At that time, the planet wasundergoing a period of warming. The scientists found that as thetemperatures rose, the leaves looked more…nibbled. Seems that with moreCO2 in the atmosphere, plants take up more carbon. That actually makestheir leaves less nutritious for plant-munching bugs—so the insectsjust eat more. So, a warmer planet will be home to some hungry bugs.Which I daresay will not please the trees. Or anyone else who relies onplants for food—which includes, ultimately, all of us.
—Karen Hopkin
Scientific American: Plants Don‘t Like Greenhouse Effect
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