On mountains in western North America, plants are moving an average of 67 metres higher per decade, more than four times faster than previously reported in mountain plants
Shutterstock/Gaspar Janos
To learn more about the rate of vegetation shift, Kellner and his colleagues compared NASA Landsat satellite images of nine mountain ranges in western North America between 1984 and 2011.“We’re talking about an absolutely enormous region of the world here, all the way from southern Mexico to the Canadian Rockies,” says Kellner.
“It’s pretty hard to think about any explanation for this [pattern] other than something that is operating consistently across nine mountain ranges between Mexico and Canada,” says Kellner. Climate change has also impacted the amount and timing of precipitation in some ranges, but the pattern hasn’t been steady across all regions.
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