News tagged with nitrate concentrations
From decade to decade: What's the status of our groundwater quality?
There was no change in concentrations of chloride, dissolved solids, or nitrate in groundwater for more than 50 percent of well networks sampled in a new analysis by the USGS that compared samples from 1988-2000 to samples ...
Apr 30, 2012 |
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Prairie restoration also helps restore water quality
U.S. Department of Agriculture (USDA) scientists are studying the overall improvement in water quality when native prairie vegetation is restored to fields once cropped with corn and soybeans. Agricultural ...
Mar 08, 2012 |
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In forests, past disturbances obscure warming impacts
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, explor ...
Mar 05, 2012 |
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What are the prospects for sustaining high-quality groundwater?
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 ...
Dec 19, 2011 |
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High nitrate concentrations in U.S. Rockies' high elevation lakes caused by melting glaciers
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 ...
Oct 12, 2010 |
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CEAP study examines nitrogen, copper levels in Bay watershed
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 ...
Aug 20, 2010 |
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