Navigation Links
Elevated nitrogen and phosphorus still widespread in much of the nation's streams and groundwater
Date:9/27/2010

Elevated concentrations of nitrogen and phosphorus, nutrients that can negatively impact aquatic ecosystems and human health, have remained the same or increased in many streams and aquifers across the Nation since the early 1990's, according to a new national study by the U.S. Geological Survey.

"This USGS report provides the most comprehensive national-scale assessment to date of nitrogen and phosphorus in our streams and groundwater," said Marcia McNutt, USGS Director. "For years we have known that these same nutrients in high concentrations have resulted in 'dead zones' when they reach our estuaries, such as during the spring at the mouth of the Mississippi, and now we have improved science-based explanations of when, where, and how elevated concentrations reach our streams and aquifers and affect aquatic life and the quality of our drinking water."

"Despite major Federal, State and local efforts and expenditures to control sources and movement of nutrients within our Nation's watersheds, national-scale progress was not evident in this assessment, which is based on thousands of measurements and hundreds of studies across the country from the 1990's and early 2000's," said Matthew C. Larsen, USGS Associate Director for Water.

According to the U.S. Environmental Protection Agency, nutrient pollution has consistently ranked as one of the top three causes of degradation in U.S. streams and rivers for decades.

USGS findings show that widespread concentrations of nitrogen and phosphorus remain two to ten times greater than levels recommended by the EPA to protect aquatic life. Most often, these elevated levels were found in agricultural and urban streams. These findings show that continued reductions in nutrient sources and implementation of land-management strategies for reducing nutrient delivery to streams are needed to meet EPA recommended levels in most regions.

Nutrients occur naturally in water and are need
'/>"/>

Contact: Kara Capelli
kcapelli@usgs.gov
571-420-9408
United States Geological Survey
Source:Eurekalert

0

GOOD

Page: 1 2 3

Related biology news :

1. Elevated water temperature and acidity boost growth of key sea star species: UBC researchers
2. Newly identified enzymes help plants sense elevated CO2 and could lead to water-wise crops
3. In elevated carbon dioxide, soybeans stumble but cheatgrass keeps on truckin
4. Nitrogen applied
5. Lichens function as indicators of nitrogen pollution in forests
6. Cropland diversity reduces nitrogen pollution
7. Researchers call for nitrogen and phosphorus reductions to combat eutrophication in aquatic systems
8. Tree species composition influences nitrogen loss from forests
9. Illinois Soil Nitrogen Test measures microbial nitrogen
10. UC Davis begins $2.8 million in studies of agricultural nitrogens impacts
11. Nitrogen research shows how some plants invade, take over others
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/17/2013)... Patients in Vietnam and other locations with central nervous ... of a newly discovered virus, according to a study ... open-access journal of the American Society for Microbiology. Researchers ... percent of 642 patients with central nervous system infections ... percent of fecal samples from pigs and poultry, suggesting ...
(Date:6/17/2013)... kids eat their food may turn out to be just ... study out of St. Michael,s Hospital. , The study, ... significant association between poor eating habits in kids ages ... "bad" cholesterol, putting them at risk for cardiovascular disease ... Canadian Medical Association Journal today. , "We ...
(Date:6/17/2013)... of improving original foundations with more modern elements. Using ... Pittsburgh,s Kenneth P. Dietrich School of Arts and Sciences ... drug delivery, gas storage, and gas transport more efficient ... in the latest issue of the Journal of ... The recent work builds upon Pitt Associate Professor of ...
Breaking Biology News(10 mins):New virus discovered in patients with central nervous system infections 2New virus discovered in patients with central nervous system infections 3Poor eating behaviors may put preschoolers at risk for later health problems 2'Chemical architects' build materials with potential applications in drug delivery and gas storage 2
... circles that rural peasant activities are at odds ... In fact, the opposite is often true, argue ... Perfecto. , Combining case studies with ecological ... farming practices encouraged by grassroots movements such as ...
... mechanism that regulates how many new cells are produced ... in the latest issue of the prestigious scientific journal, ... for things like neurological disorders and anaemia," says Professor ... old cells are continually being replaced by new. If ...
... reaching age 90 with preserved cognition, according to a ... Journal of Geriatric Psychiatry. The study, which was conducted ... to identify genetic links to cognitive longevity. , "Successful ... focused on individuals who had reached at least 90 ...
Cached Biology News:Agriculture and tropical conservation: rethinking old ideas 2Agriculture and tropical conservation: rethinking old ideas 3New stem-cell findings can help the body to cure itself 2New research examines genetics of successful aging 2
(Date:6/18/2013)... June 18, 2013 Kitware , ... announces a new Fast-Track award from the U.S. Department ... environment (IDAE) for the nuclear power industry. , Construction ... more than 30 years, but the United States’ nuclear ... gains in power plant utilization through improved refueling, maintenance, ...
(Date:6/17/2013)... Belvoir, VA (PRWEB) June 17, 2013 ... annual Basic Research Technical Review at the Waterford in ... More than 300 grant awardees will present technical details ... Technical sessions will cover a broad range of counter ... (2) Cognitive, Information and Network Science; (3) Science for ...
(Date:6/17/2013)... (PRWEB) June 17, 2013 With the huge ... launch of the Chief Medical Officer Summit for Emerging Life ... will take place in San Francisco on November 4-5, 2013 ... the first time, West Coast Chief Medical Officers at biotechs ... Elizabeth Stoner, Managing Director of MPM Capital. Valerie Bowling, Executive ...
(Date:6/17/2013)... June 17, 2013 ... announced the addition of the "North ... Formulations [Liposomes, Microspheres, & Nanoparticles], Devices [Disposables ... Free & Auto Injectors] & Therapeutics- Forecasts ... ,      (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , ...
Breaking Biology Technology:Kitware to Develop an Open-Source HPC Design-Analysis Environment for Nuclear Energy Research 2Invitation to Register: Annual Defense Threat Reduction Agency Basic Research Technical Review 2Chief Medical Officer Summit for Biotechs Goes West 2Chief Medical Officer Summit for Biotechs Goes West 3North America Injectable Drug Delivery Market - by Formulations, Devices & Therapeutics- Forecasts to 2017 2North America Injectable Drug Delivery Market - by Formulations, Devices & Therapeutics- Forecasts to 2017 3
... , , ... , , , ... analysis.,By comparing the separated bands,of an unknown sample to a ... fragment,can be estimated. The Agilent,2100 bioanalyzer is an instrument,which utilizes ...
... , , ... , , , Whereas in ... molecules, the development of soft ionization methods,such as matrix-assisted laser desorption/ionization ... the analysis of proteins up to 300 kDa using MS has,become ...
... , , , ... , , , , ... studying functional,assays requiring the transfection of small interfering RNA (siRNA),into a cell, ... given cell lines would be of great value.,Three to four siRNA sequences ...
Cached Biology Technology:High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 2High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 3High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 4High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 5Using the Agilent 2100 bioanalyzer for,quality control of protein samples prior to,MS-analysis 2Using the Agilent 2100 bioanalyzer for,quality control of protein samples prior to,MS-analysis 3Using the Agilent 2100 bioanalyzer for,quality control of protein samples prior to,MS-analysis 4Using the Agilent 2100 bioanalyzer for,quality control of protein samples prior to,MS-analysis 5siRNA transfection optimization,with the Agilent 2100 bioanalyzer 2siRNA transfection optimization,with the Agilent 2100 bioanalyzer 3siRNA transfection optimization,with the Agilent 2100 bioanalyzer 4siRNA transfection optimization,with the Agilent 2100 bioanalyzer 5siRNA transfection optimization,with the Agilent 2100 bioanalyzer 6siRNA transfection optimization,with the Agilent 2100 bioanalyzer 7
ANTI L-DOPA...
The Light Diagnostics Calicivirus Genotype 1&2 Typing OligoDetect assay is applicable for the qualitative detection of calicivirus RNA generated by an in-house validated in vitro nucleic acid amplifi...
Recombinant Rat CINC-2 alpha, CF...
sodium channel, nonvoltage-gated 1 alpha,...
Biology Products: