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Discipline Specific Core Concepts is Ecological Core Concepts -- Human impacts
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View Resource Issues in Ecology, Issue 15: Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions

It is not surprising that humans have profoundly altered the global nitrogen (N) cycle in an effort to feed 7 billion people, because nitrogen is an essential plant and animal nutrient. Food and...

View Resource Issues in Ecology, Issue 15: Press Release

This January 2012 press release introduces and describes the significance of issue #15 of ESA's Issues in Ecology series, "Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions."

View Resource Pool 28 along the Turure River in 2009 with Reference Line

Picture of Pool 28 taken in 2009 along the Turure River after the mountain road had been widened. The stream bottom is covered in sediment. Water flows from the left to the right side of the...

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View Resource Pool 28 along the Turure River in 2006

Picture of Pool 28 taken in 2006 along the Turure River before the mountain road had been widened. One can faintly see a rocky bottom to the stream. Pool 28 is downstream of Pool 17. The bottom of...

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View Resource Pool 17 along the Turure River in 2009

Picture of Pool 17 taken in 2009 along the Turure River after the mountain road had been widened. To get to the rocks along the far bank in 2005, one had to wade in waist-deep (about 3 feet) water. ...

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