A new study finds that invasive grass species are making wildfires more frequent, especially in California.
The study highlights twelve different species that are rapidly spreading across much of the United States due to climate changes and warmer weather in new areas. Regions with invasions of these grasses were found to have fires three times as frequently. One of these grasses, cheatgrass, covers nearly one third of the Intermountain West.
Researchers explain that the grasses function like kindling, causing fires to catch more readily. The areas currently burning in California are more shrubs and grasses than forests. As climate change continues unabated and invasive species spread, frequent fires such as those that now burn in California will continue to catch around the globe.
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