A recent United States Geological Survey-led study published in Science reports on an unsettling trend of tree death rates in western US old-growth forests. The study found that the rate of tree death has doubled over the last two decades across a variety of forest types, tree species and sizes, and at all elevations across the western United States. Regional increases in temperature appears to be correlated with tree death rates.
For more see:
- Tree Deaths Have Doubled Across the Western U.S. — Regional Warming May be the Cause at the USGS Newsroom
The Physical Environment links: The Forest Biome