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段落1

This is Scientific American 60-Second Earth. I'm Cynthia Graber. Got a minute?

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Worldwide, rainforests are slashed for agriculture and logging.

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When a plot of land is used up, it's often abandoned.

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Which should allow the rainforest to regenerate.

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But along with roads and buildings comes lighting.

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And the artificial light may hamper forest regrowth.

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Because fruit-eating bats that ordinarily leave behind a rich trail of seeds may decrease their feeding in lit areas.

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That's according to a study in the Journal of Applied Ecology.

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Researchers looked at captive bats, able to feed from a dark compartment or one dimly lit.

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And the bats took twice as much food from the dark space as from the lit one.

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The researchers also monitored wild bats that fed on fourteen plants ripe with fruit.

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Each plant could be kept in darkness or illuminated by a street light.

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Bats harvested fruit from the dark plants quickly and thoroughly.

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But their take was delayed and decreased on the lit plants.

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The researchers conclude that light could interfere with the activities of seed-dispersing bats and thus stall rainforest regeneration.

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They recommend that artificial outdoor light in deforested tropical areas be restricted.

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So that bats will eat and let the seeds fall where they may.

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Thanks for the minute, for Scientific American 60-Second Earth. I'm Cynthia Graber.

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