Past disturbances, such as logging, can obscure the effects of climate change on forest ecosystems. So reports a study just published in the Proceedings of the National Academy of Sciences. The paper, exploring nitrogen dynamics, ...
Environment
Mar 5, 2012
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Intensive agriculture practices developed during the past century have helped improve food security for many people but have also added to nitrate pollution in surface and groundwaters. New research has looked at water quality ...
Environment
Dec 19, 2011
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Melting glaciers in the American West are releasing chemicals that cause ecosystem changes in alpine lakes, including large quantities of nitrogen that reduces biodiversity, according to an international research team led ...
Environment
Oct 12, 2010
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A comprehensive study of pollutants in a major Chesapeake Bay tributary revealed troublesome levels of nitrogen and copper that could flow into the Bay, according to U.S. Department of Agriculture (USDA) scientists and their ...
Environment
Aug 20, 2010
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