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Expanding forests darken the outlook for butterflies, study shows

for other species of butterflies."

Only a few species of butterflies are threatened in the Canadian Rockies, but many more are threatened in Europe, where the problem of shrinking alpine meadows is older and more acute. Roland believes the results of his study can inform conservation biologists in Europe to help them save their butterflies.

As for protecting the butterflies in the Canadian Rockies, Roland would like to see more prescribed burning of forests to increase the number and size of alpine meadows. However, unlike the park areas, the unprotected land areas are often used for commercial purposes and are therefore less likely to be allowed to burn.

"They do prescribed burning in the national parks for general maintenance, but they also do it to increase the meadow areas, which animals such as sheep and elk like to inhabit. The offshoot is that it also helps smaller animals, such as the butterflies," Roland said.


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Source:University of Alberta


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