Overview The climate is changing. As a result, the frequency and severity of wildfires is increasing throughout much of the West. In addition, climate change is altering the way that ecosystems recover after wildfires. Scientists are concerned that the changes in wildfire and recovery patterns will force ecosystems over critical thresholds – so called tipping points – wherein the dominant vegetation permanently shifts from forests to shrubs. The 25-million acre (10 million hectare) Klamath region of Oregon and California is an area of particular concern. Such a shift in the Klamath would impair its unparalleled botanical diversity (e.g. there are 29 species of conifer trees in the Klamath!) and release massive amounts of greenhouse gases as some of the most carbon dense forests in North America transition to low-carbon shrub-chaparral. |