Three elements commonly found at elevated levels in an Appalachian river polluted by runoff from mountaintop coal mining have distinctive chemistries that can be traced back to their source, according to a Duke University-led ...
Environment
Aug 15, 2013
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A new report projects that by the middle of this century there will be an average 56 percent drop in the amount of water stored in peak snowpack in the McKenzie River watershed of the Oregon Cascade Range - and that similar ...
Earth Sciences
Jul 26, 2013
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We rely on our physical environment for many things – clean water, land for crops or pastures, storm water absorption, and recreation, among others. Yet it has been challenging to figure out how to sustain the many benefits ...
Environment
Jul 1, 2013
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Predicted increases in temperature and drought in the coming century may make it more difficult for conifers such as ponderosa pine to regenerate after major forest fires on dry, low-elevation sites, in some cases leading ...
Environment
Jun 28, 2013
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No-till management practices can reduce soil erosion, but evidence suggests they can also lead to increased runoff of dissolved phosphorus from soil surfaces. Meanwhile, farmers looking to avoid herbicides often have to combat ...
Environment
Jun 11, 2013
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At least in the case of Verde Valley, downstream irrigators are willing to pay for restoration of a forest they cannot see to preserve a resource that is currently free.
Environment
May 31, 2013
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The results of a four-year study, published in the journal Ecosystem Services this month, has revealed that cloud forests are responsible for filtering almost half of all surface water in tropical dam watersheds, despite ...
Environment
Apr 25, 2013
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Dissolved organic matter in streams and rivers can be broken down by sunlight or bacteria, providing a fuel source for aquatic ecosystems and affecting carbon dioxide and carbon monoxide concentrations as the organic matter ...
Environment
Apr 15, 2013
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Plants need nitrogen to grow, and nitrate is a common fertilizer ingredient, but high levels of nitrate contamination in drinking water sources can cause health problems. It is generally known that nitrogen flows through ...
Environment
Mar 15, 2013
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Aging sewer systems are spilling a considerable amount of nitrogen into urban watersheds, diminishing both the quality of water and ecosystems' habitats. However, many studies documenting the impacts of nitrogen on urban ...
Environment
Mar 11, 2013
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