The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs. From beaver ...

We investigated several key limiting factors that control alpine tundra productivity by developing an ecosystem biogeochemistry model. The model simulates the coupled cycling of carbon (C), nitrogen ...

Forests of spruce trees and shrubs in parts of northern Canada are taking over what were once tundra landscapes–forcing out the species that lived there. This shift can happen at a much faster speed ...

Change detection studies using remote sensing and plot-based sampling show that Arctic vegetation is changing. Most studies have focused on the proliferation oftall shrubs, but increased productivity ...