Wildfire risks drive permanent forest ecosystem shifts in North America

Wildfire activity is driving a permanent transformation of forest ecosystems across North America. In the Western United States, researchers warn that up to 40 percent of Western conifer forests could convert into shrubland by 2100. This shift is driven by high-intensity blazes and a warming climate that prevents forests from regenerating. The loss of tree cover is expected to accelerate snowmelt, potentially exacerbating water shortages in regions that rely heavily on snowmelt for their water supply.

In British Columbia, forestry experts warn that decades of aggressive fire suppression and the loss of Indigenous cultural burning practices have created a “fire deficit.” This has left forests dense with dead trees and surface fuel, making them prone to burning with unnatural severity. Industry representatives are calling for expanded thinning and controlled burns to reduce the risk to communities and ecosystems.