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The towering crags and peaks of the Canadian Rocky Mountains have been getting steadily greener over the past century, according to a new study.
“They are kind of becoming the needly or leafy mountains at this point,” said lead author Andrew Trant, an ecologist at the University of Waterloo.
The researchers stumbled across a collection of 120,000 historic images — mainly high-quality, glass-slide photographs — from early cartographic surveys of the Canadian Rockies, which they were able to compare with modern images of the exact same scenes taken nearly 100 years later.
“In about 90 per cent of the cases the trees are growing higher up the mountain and in greater numbers, so more individual trees,” he said.
Areas that were once covered by stands of low-lying, sideways-growing trees, gnarled and tortured by the elements, are now growing upright, they found.
“Conditions have improved enough that these same individuals have turned from a prostrate, craggly thing into an upright tree,” he said. “What’s likely is that as things are warming they are able to do something they couldn’t do before and they are starting to grow upwards.”
https://news.google.com/__i/rss/rd/articles/CBMidGh0dHBzOi8vdmFuY291dmVyc3VuLmNvbS9uZXdzL2xvY2FsLW5ld3MvY2VudHVyeS1vbGQtcGhvdG9zLXNob3ctZWZmZWN0cy1vZi1jbGltYXRlLWNoYW5nZS1pbi1yb2NreS1tb3VudGFpbi1mb3Jlc3Rz0gGiAWh0dHBzOi8vdmFuY291dmVyc3VuLmNvbS9uZXdzL2xvY2FsLW5ld3MvY2VudHVyeS1vbGQtcGhvdG9zLXNob3ctZWZmZWN0cy1vZi1jbGltYXRlLWNoYW5nZS1pbi1yb2NreS1tb3VudGFpbi1mb3Jlc3RzL3djbS80YTA4MGNmZi1jMzhjLTRkNWUtYTE0ZS02Y2NmODdjNzg0MTMvYW1wLw?oc=5
2020-07-08 23:17:27Z
CBMidGh0dHBzOi8vdmFuY291dmVyc3VuLmNvbS9uZXdzL2xvY2FsLW5ld3MvY2VudHVyeS1vbGQtcGhvdG9zLXNob3ctZWZmZWN0cy1vZi1jbGltYXRlLWNoYW5nZS1pbi1yb2NreS1tb3VudGFpbi1mb3Jlc3Rz0gGiAWh0dHBzOi8vdmFuY291dmVyc3VuLmNvbS9uZXdzL2xvY2FsLW5ld3MvY2VudHVyeS1vbGQtcGhvdG9zLXNob3ctZWZmZWN0cy1vZi1jbGltYXRlLWNoYW5nZS1pbi1yb2NreS1tb3VudGFpbi1mb3Jlc3RzL3djbS80YTA4MGNmZi1jMzhjLTRkNWUtYTE0ZS02Y2NmODdjNzg0MTMvYW1wLw
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