Science Daily reports on a recent study by the U.S. Geological Survey and University of Montana that shows the impact of a decreasing snowpack in the Arizona Mountains on plants and animals. Here are some of their findings that show an ecological cascade of events:
- Climate chnage leads to a decreased snowpack
- Decreased snowpack leads to winter access to high elevation trees
- Elk browse trees at higher elevations
- Over browsing leads to decline in deciduous trees
- Decline in deciduous trees leads to decreased habitat for birds
- Decreased habitat and bird population lead to increased predation on remaining bird nests
And maybe the top of the list could be human behaviors causing climate change?
Science Daily Dramatic links found between climate change, elk, plants, and birds.
Nature Climate Change Climate impacts on bird and plant communities from altered animal–plant interactions
- Green Blog: Songbirds as a Casualty of Warming (green.blogs.nytimes.com)