Insects are on the decline because of the combined effects of climate change and intense agriculture, with the worst-hit areas seeing a 49 per cent drop in insect numbers
The combined effects of climate change and agriculture may be responsible for large declines in insect populations around the world, with worst-hit regions seeing a 49 per cent drop in numbers.
across a total of 6095 sites around the world. The studies covered 17,899 insect species including beetles, wasps, butterflies and crickets, with data collected between 1992 and 2012. They found that in regions with the highest temperature rises and high-intensity agriculture, there were 49 per cent fewer insects than in regions where the effects of climate change are minimal and there is little human activity. What’s more, in the regions worst affected by climate change and farming, there were 27 per cent fewer insect species than in regions little affected by climate change and farming.
“Insects in temperate regions are much closer to their cold limits than their warm limits, whereas in the tropics, places are just getting too hot for them,” says Outhwaite.
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