For caribou, growth of woody plants like alders and willows means problems. Caribou depend on tundra plants like lichen and mosses; the shrubs and trees taking over the terrain are reducing the ...

More: ・Historically: The New York Times explains that for millennia, the moss, lichens, and other vegetation of the tundra have taken in carbon dioxide and stored it, as all plants do.

Tundra swan subspecies also winter in Europe ... These large birds feed by dipping their heads underwater to pluck aquatic plants, tubers, and roots. They also eat shellfish and are developing ...