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

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:5/5/2015)... May 5, 2015, NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market, reminds investors and media ... Officer, is presenting  at CARTES SECURE CONNEXIONS AMERICA 2015, held ... The three-day conference is organized into a ... in is themed Global Fraud: Where is the Trust ...
(Date:4/27/2015)... Apr. 27, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market, announces ... pre-order customers the first week of May, 2015 and ... of May. Gino Pereira , ... for the company as Wocket® enters the consumer market. ...
(Date:4/21/2015)... 21, 2015 High crime ... are boosting access control systems market in ... a recently published report by TechSci Research " Saudi ... access control systems market in Saudi Arabia ... 2020.The access control systems market in the Kingdom is ...
Breaking Biology News(10 mins):NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 2Wocket, the Smartest Wallet You Will Ever Own, Announces Shipment to Pre-order Customers 3Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 2Saudi Arabia Access Control Systems Market to Touch USD1.2 Billion by 2020 Says TechSci Research 3
... 30, 2014 Scientists from the Florida campus of ... $1.8 million from the National Cancer Institute of the ... that underlie lung cancer and to use this information ... TSRI associate professor, will be principal investigator of the ...
... Researchers at the National Institute of Standards and Technology ... model of a simplified cell membrane to accurately detect ... disease, bacterial vaginosis (BV), at extraordinarily low concentrations. The ... to improve disease diagnosis. Caused by the bacteria ...
... (Lebanon, NH, 1/30/14) Dartmouth researchers developed a new biological ... (PHPN), to identify underlying genetic connections between different diseases ... The PHPN mines the data present in large ... or pathways and expresses them in a visual form. ...
Cached Biology News:NIST cell membrane model studied as future diagnostic tool 2Dartmouth researchers develop new tool to identify genetic risk factors 2
(Date:5/26/2015)... 2015 Pharmaco-Kinesis Corporation (PKC) announced today that ... Shutters on the Beach in Santa Monica, ... the Company,s innovative Metronomic Biofeedback Pump (MBP), a fully ... over time to a target site of the human ... system in real-time.  ...
(Date:5/26/2015)... , May 26, 2015  Asterias Biotherapeutics, Inc. ... emerging field of regenerative medicine, today announced that all ... 2014 were exercised prior to their expiry on June ... of $11.7 million. "We thank our shareholders ... President and CEO of Asterias. "This exercise of warrants ...
(Date:5/26/2015)... , May 26, 2015 US-Australian drug discovery and development ... it will present at the 2015 Marcum MicroCap Conference ... at the Grand Hyatt Hotel. The ... CEO, is scheduled to begin at 9.30 a.m. ET and will ... to http://wsw.com/webcast/marcum3/nvgn . The annual Marcum MicroCap ...
(Date:5/25/2015)... Where is the universe expanding to? ... honest answer is that nobody is entirely sure." , ... the month of June, starting with the ULI Florida ... to top tech trends. And one of the most ... universe is expanding to. According to Einstein’s theory of ...
Breaking Biology Technology:Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 2Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 3Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 4Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 5Asterias Biotherapeutics Receives $11.7 Million in Proceeds from Exercise of Warrants 2Asterias Biotherapeutics Receives $11.7 Million in Proceeds from Exercise of Warrants 3Novogen to Present at the 2015 Marcum Microcap Conference 2Novogen to Present at the 2015 Marcum Microcap Conference 3Novogen to Present at the 2015 Marcum Microcap Conference 4Futurist Jack Uldrich Says Embracing Our Ignorance is the Key to Unlearning 2Futurist Jack Uldrich Says Embracing Our Ignorance is the Key to Unlearning 3
... 26 Campbell Alliance, the leading,management consulting firm ... that George Schmidt, Vice President,in the firm,s Sales ... Force Effectiveness (SFE) conference. The event will be ... Convencions Internacional in Barcelona, Spain., Mr. Schmidt,s ...
... CLAREMONT, Calif., March 26 /Xinhua-PRNewswire-FirstCall/,-- Kiwa Bio-Tech Products ... for the year ended December 31, 2007 were,$9,129,779 ... Net sales from continuing operations were $9,129,779 ... 2007 and 2006, respectively,representing an increase of $6,623,064 ...
... Md., March 26 PharmAthene, Inc.,(Amex: ... the development and,commercialization of medical countermeasures against ... has been awarded a contract,modification providing an ... of Protexia(R), the Company,s broad spectrum chemical ...
Cached Biology Technology:Campbell Alliance Sales Practice to Conduct Workshop at EyeForPharma SFE Europe Conference 2Campbell Alliance Sales Practice to Conduct Workshop at EyeForPharma SFE Europe Conference 3Kiwa Bio-Tech Year-End Revenues Increase 264% - Exceed $9.1 Million 2Kiwa Bio-Tech Year-End Revenues Increase 264% - Exceed $9.1 Million 3Kiwa Bio-Tech Year-End Revenues Increase 264% - Exceed $9.1 Million 4Kiwa Bio-Tech Year-End Revenues Increase 264% - Exceed $9.1 Million 5Kiwa Bio-Tech Year-End Revenues Increase 264% - Exceed $9.1 Million 6Kiwa Bio-Tech Year-End Revenues Increase 264% - Exceed $9.1 Million 7Department of Defense Awards $5.8 Million Contract Modification Providing Additional Funding for PharmAthene's Protexia(R) Program 2Department of Defense Awards $5.8 Million Contract Modification Providing Additional Funding for PharmAthene's Protexia(R) Program 3Department of Defense Awards $5.8 Million Contract Modification Providing Additional Funding for PharmAthene's Protexia(R) Program 4
Antibodies were affinity purified using epitopes specific to USP33 immobilized on solid support....
... antibody recognizes 30% of IgM-rheumatoid ... It does not cross-react with IgM, ... factor nor with pooled F(Ab)2 fragments. ... ELISA to detect rheumatoid factor. Product ...
...
...
Biology Products: