Due to higher temperatures and water scarcity brought on by climate change, death rates of Western U.S. forests have doubled over the last two to three decades, according to an article in the Washington Post. These findings are part of a new U.S. replica cartier Tank Francaise Chronograph watches Geological Survey study, which will be published today in the online journal Science. Summers are getting longer and hotter in the West, subjecting trees to greater stress from droughts and attacks by insect infestations. “It’s very likely that mortality rates will continue to rise,” co-author Nathan L. Stephenson told the Washington Post.
A team of 11 researchers examined 76 long-term forest plots in three regions of the West, discovering similar shifts in old-growth forests and documenting die-offs in Northern California, Oregon, Washington, southern British Columbia, Colorado, and Arizona. Troubling news in the Pacific Northwest: death rates have doubled over the last 17 years. Things aren’t much better in Colorado, where increases in wildfires and temperatures, replica cartier Tank Style Watches Tank Divan watches and the rise of bark beetles have devastated sub-alpine forests. “Our society needs to devise policies that will help us to adapt to the changes that are underway,” co-author Thomas T. Veblen told the Washington Post.Survey authors warned that things could deteriorate even further, suggesting accelerated tree mortality rates might cause forests to shift from being a carbon sink that take greenhouse gases out of the atmosphere to actually emitting carbon dioxide.--Ivan Miller
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