Crop-munching pests are traveling north as the climate changes
from Grist:
Crop-munching pests are traveling north as the climate changes
By John Upton
Pests are packing their metaphorical bags and heading for fresh starts nearer the North Pole as the climate warms around them.
Beetles, moths, fungi, and other pests that afflict forests and crops in the Northern Hemisphere are expanding their ranges northward by an average of 24 feet every day.
Thats according to British scientists who studied the records of infestations of 470 pests around the world since 1960 and measured the rate at which their ranges appeared to be shifting. They say their findings reveal a potential threat to food security posed by global warming.
The northerly march is more rapid than that reported for many wild species, the scientists wrote in a paper published Sunday in the journal Nature Climate Change. And its nearly identical to what would be expected from rising temperatures. .................(more)
The complete piece is at:
http://grist.org/news/crop-munching-pests-are-traveling-north-as-the-climate-changes/