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Last updated on April 19, 2014 at 5:20 EDT

Latest Eutrophication Stories

2008-07-18 03:00:27

By Hammond, John White, Philip Continuing our series on plant nutrition, John Hammond and Philip White look at the environmental impact of phosphorus pollution from agriculture and consider what can be done to mitigate it The availability of clean water is essential for our sustainable futures. People use large amounts of water in domestic, amenity, agricultural and industrial activities, which increases the nutrient status of rivers and lakes. Increasing the amount of nutrients,...

2008-03-12 19:25:00

Tiny organisms play a powerful role in removing nitrate, a form of nitrogen pollution caused by human activity, in streams, according to a study by a team led by Oak Ridge National Laboratory and published in Nature. In the first phase of the study, which involved 31 aquatic scientists from across the United States, researchers added small amounts of an uncommon non-radioactive isotope of nitrogen to 72 streams across the U.S. and Puerto Rico. Using this tracer, the team's objective was to...

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2008-03-12 15:50:00

The plight of the world's oceans is dire, according to recent studies, through insults from human-derived activities depopulating and damaging reefs, altering coastlines, and creating pollutants, such as nitrogen runoff from terrestrial watersheds. A study by 31 aquatic biologists involving 72 stream sites in the United States and Puerto Rico has found that one critical buffer to excess nitrogen run off from agricultural and urban areas turns out to be small streams and rivers. The findings...

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2008-02-06 11:00:00

Impact of nitrogen on natural ecosystems could influence climate change A study by UC Irvine ecologists finds that excess nitrogen in tropical forests boosts plant growth by an average of 20 percent, countering the belief that such forests would not respond to nitrogen pollution.Faster plant growth means the tropics will take in more carbon dioxide than previously thought, though long-term climate effects are unclear. Over the next century, nitrogen pollution is expected to steadily rise,...

2008-01-24 14:13:10

Like bank accounts, the nutrient cycles that influence the natural world are regulated by inputs and outputs. If a routine withdrawal is overlooked, balance sheets become inaccurate. Over time, overlooked deductions can undermine our ability to understand and manage ecological systems. Recent research by the Universit© de Montr©al (Canada) and the Cary Institute of Ecosystem Studies (Millbrook, New York) has revealed an important, but seldom accounted for, withdrawal in the global...

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2007-12-17 15:15:00

By HENRY C. JACKSON JEFFERSON, Iowa - Because of rising demand for ethanol, American farmers are growing more corn than at any time since the Depression. And sea life in the Gulf of Mexico is paying the price. The nation's corn crop is fertilized with millions of pounds of nitrogen-based fertilizer. And when that nitrogen runs off fields in Corn Belt states, it makes its way to the Mississippi River and eventually pours into the Gulf, where it contributes to a growing "dead zone" - a...

2007-07-09 17:43:42

COLONIAL BEACH, Va. - Virginia plans to install a monitoring station in the Potomac River that will help boaters and fishermen while assisting marine biologists studying the Chesapeake Bay and its tributaries. The monitoring station is planned at the mouth of Monroe Bay in a section of the Potomac plagued by fish kills. It will collect water-quality information every 15 minutes and post it on a Virginia Institute of Marine Science Web site. The station, which should be in place next month, is...

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2007-06-13 06:00:00

CHARLESTON, Ill. _ Kayaking in green algae is not Ron Easter's idea of the pleasant outing he seeks as he sets out three or four evenings a week to paddle the Embarras River in the farmlands of eastern Illinois. But on journeys up the Embarras last summer, algae are what Easter, 52, a high school biology teacher, found himself gliding through. "You wonder what is washing off those farm fields," he said while pulling his kayak out of the river recently. What is washing off those fields is...

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2005-06-14 06:56:58

MADISON, Wis. -- Farmers' routine application of chemical fertilizers and manure to the land poses a far greater environmental problem to freshwater lakes than previously thought, potentially polluting the water for hundreds of years, according to research published Monday. Phosphorus in those substances has built up in the soil and will slowly end up in many lakes, where the nutrients lead to plant and algae growth in the water. The environmental problem, known as eutrophication, can turn...