Talk of Alaska: Plants and Climate Change
Tue, August 21, 2007
Posted in Talk of Alaska
The spruce bark beetle may just be the beginning of major changes to the trees, shrubs and tundra vegetation on the Last Frontier. Alaska’s changing climate is having an effect on our plants and these effects are predicted to increase. Wildlife habitat, water quality, temperature and other environmental factors are modulated by plant life. Join the conversation about plant extinction, biodiversity and more on the next Talk of Alaska.
HOST: Steve Heimel
GUESTS:
- Jay Gulledge, Staff Scientist, Pew Center on Global Climate Change
- Live callers statewide
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Steve mentioned “proxy measures” used to measure climate change. Some measurements, such as stable nuclide analysis (isotopes and major, minor, trace metals) elicit information from the direct observers of past change. That is, the plant and animal remains in soils or museums were present and sampling the environment when they were alive. From there, the chemical composition (the recorded previous environment) can be proxies for the human environment of that time period.