Pesticides in Snow Hageman et al. 2006

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Presentation transcript:

Pesticides in Snow Hageman et al. 2006 Snow samples collected at national parks: Sequoia, Rocky, Mount Rainier, Glacier, Denali, Noatak, and Gates of the Arctic Are pesticides in snow? Local or regional sources? Cold-condensation make worse?

Pesticides are everywhere!

Inverse Latitude Effect

Cold Condensation Hypothesis

Summary Pesticides were prevalent Sequoia National Park the worst Historical pesticides still around No support for cold-condensation Ho Almost all pesticides local/regional in source, except Arctic areas.