
Jonathan Koop
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Sep 8, 2026
How Megafires are Transforming Conifer Forests
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12:35Susan MoranHOST
forested landscapes And what would you say are the sort of where the consensus is as to what the main drivers are of this kind of trend?

Jonathan KoopGUEST
Yeah, well, there are the first driver is actually the absence of fire for many of these systems for in some places over a century, right? So with sort of American and European colonization of parts of the Western U.S., That brought with it the removal or displacement of indigenous peoples who were oftentimes managing landscapes with fire.

Jonathan KoopGUEST
It often brought with it also super extensive livestock grazing that removed surface fuels that formed the basis of surface fire regimes.

Jonathan KoopGUEST
And then along came Smokey Bear and this mentality or policy of fire suppression.

Jonathan KoopGUEST
Mostly more fuels, more continuous fuels from the surface to the canopy and more continuous fuels as you go over distances in these forests, more continuous ground fuels.

Jonathan KoopGUEST
And so when we do get fires now, oftentimes these are fires that easily move from the ground up into the treetops and then can spread from treetop to treetop.
9 MINS LATER