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As extreme fires transform Alaska s boreal forest, aspen and birch put a brake on carbon loss and how fast the forest burns The Conversation 2 hrs ago Jill Johnstone, Adjunct Professor of Biology, University of Saskatchewan, Xanthe Walker, Assistant Research Professor, Northern Arizona University, Heather Dawn Alexander, Assistant Professor of Forest Ecology, Auburn University, and Michelle C. Mack, Professor of Ecosystem Ecology, Northern Arizona University © Michael Risinger/U.S. Army National Guard A helicopter drops water on a forest fire in Alaska. Fire is a hot topic these days, particularly when it comes to the boreal forest, the vast expanse of trees that stretches across Alaska, Canada and other cold northern regions. Large fires have been burning more frequently and severely in these remote landscapes, driven by longer seasons of hot, dry weather and more lightning strikes as the climate warms.

United statesVictoro leshykJill johnstonePaxson woelber flickrNatural sciencesStrategic environmental researchNorthern arizona university deciduousMichael risinger us army national guardFire science programEngineering research councilSherman hogue us army alaskaDevelopment programUs forest serviceNational guardFlickr deciduousEcosystem science