along with tundra regions, treeless shrublands north of the boreal forest that play a significant role in regulating the Earth's climate. The boreal forest, covering much of Canada and Alaska ...

Higuera's research is important because other evidence indicates that as the climate has warmed in the past 50 to 100 years, shrubs have expanded across the world's tundra regions. "There is ...

along with tundra regions, treeless shrublands north of the boreal forest that play a significant role in regulating the Earth’s climate. Tundra regions have already seen new plants colonising ...