Wednesday, June 4, 2008

Cars, Cows, and Checkerspot Butterflies

Here is a link to the paper I mentioned in class that investigates the effects of N-deposition on serpentine grassland communities. You can also read about how N-deposition from air pollution is changing other ecosystems, including coastal sage scrub in southern California, and desert scrub in the Mojave, by allowing invasion of non-native annual grasses, which are in turn altering fire regimes. These are great examples of the complex interactions ecologists investigate and the challenges faced by ecosystem managers.

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