News tagged with river ecosystems

Urban impacts on phosphorus in streams

Although phosphorus is an essential nutrient for all life forms, essential amounts of the chemical element can cause water quality problems in rivers, lakes, and coastal zones. High concentrations of phosphorus in aquatic ...

dateAug 11, 2011 in Environment
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Beetle may pack a big punch in curbing salt cedar

(PhysOrg.com) -- Non-native vegetation’s infiltration to the greater Southwest has caused its share of ecosystem concerns over the years. Now Heather Bateman is looking at the effectiveness of some of ...

dateApr 01, 2011 in Ecology
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Some Canadian rivers at risk of drying up

(PhysOrg.com) -- Some Canadian rivers are at risk of drying up as impacts of climate change intersect with growing water demand from the country's cities, industries and agriculture, a new WWF report has found.

dateOct 15, 2009 in Environment
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Shifting Baselines Confound River Restoration

Steep reductions in the abundance of fish, shellfish, and other aquatic fauna in recent centuries are not restricted to animals that live in the sea: historical records show that species in rivers and lakes worldwide also ...

dateSep 01, 2009 in Ecology
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The Amazon River is 11 million years old

The Amazon River originated as a transcontinental river around 11 million years ago and took its present shape approximately 2.4 million years ago. These are the most significant results of a study on two ...

dateJul 07, 2009 in Earth Sciences
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