Navigation Links
New study focuses on nitrogen in waterways as cause of nitrous oxide in the atmosphere
Date:12/20/2010

Jake Beaulieu, a postdoctoral researcher the Environmental Protection Agency in Cincinnati, Ohio, who earned his doctorate at the University of Notre Dame, and Jennifer Tank, Galla Professor of Biological Sciences at the University, are lead authors of new paper demonstrating that streams and rivers receiving nitrogen inputs from urban and agricultural land uses are a significant source of nitrous oxide to the atmosphere.

Nitrous oxide is a potent greenhouse gas that contributes to climate change and the loss of the protective ozone layer. Nitrogen loading to river networks from urban and agricultural activities is a potentially important source of nitrous oxide emission to the atmosphere. It occurs through a microbial process called denitrification, which converts dissolved nitrate-nitrogen to nitrous oxide and dinitorgen gases.

In a paper appearing this week in the Proceedings of the National Academy of Sciences (PNAS), Beaulieu and Tank describe how they measured nitrous oxide production rates from denitrification in 72 streams draining multiple land-use types across the United States.

They found that the amount of nitrous oxide produced in streams is related to human activities that release nitrogen into the environment, such as fertilizer use and sewage discharges.

"Runoff from agricultural and urban watersheds has increased the availability of nitrogen in streams and rivers, greatly increasing nitrous oxide production rates," Beaulieu said. "This research shows that river networks play an important role in how human nitrogen use affects climate change and ozone loss."

The new study reports that streams and river networks are the source of at least 10 percent of human-caused nitrous oxide emission to the atmosphere worldwide, which is three times the amount estimated by an earlier report from the Intergovernmental Panel on Climate Change (IPCC).

Beaulieu and Tank suggest that reductions in nitrous oxide emissions from stream and river networks can be achieved through changes in urban and agricultural land use patterns, such as reduced agricultural fertilizer application.


'/>"/>

Contact: Jake Beaulieu
beaulieu.jake@epamial.epa.gov
513-569-7842
University of Notre Dame
Source:Eurekalert

Related biology news :

1. SU biologist partners with National Park Service to study bison grazing in Yellowstone
2. Despite damage, membrane protein structure can be seen using new X-ray technology, study reveals
3. CSHL study finds that 2 non-coding RNAs trigger formation of a nuclear subcompartment
4. Consortium studying mathematical modeling of influenza infection
5. Study shows garlic could protect against hip osteoarthritis
6. New study suggests almonds may help reduce risk of type 2 diabetes and heart disease
7. Study shows caffeine negatively affects children
8. New study about Arctic sea-ice, greenhouse gases and polar bear habitat
9. Opportunity leads to promiscuity among squirrels, study finds
10. UC Davis study: Wild salmon decline was not caused by sea lice from farm salmon
11. When it comes to selecting a mate, the eyes have it: Queens University study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/15/2016)... 15, 2016 --> ... Transparency Market Research "Digital Door Lock Systems Market - Global ... 2023," the global digital door lock systems market in terms ... and is forecast to grow at a CAGR of 31.8% ... and medium enterprises (MSMEs) across the world and high industrial ...
(Date:3/11/2016)... 2016 --> ... "Image Recognition Market by Technology (Pattern Recognition), by Component ... Deployment Type (On-Premises and Cloud), by Industry Vertical and ... MarketsandMarkets, the global market is expected to grow from ... by 2020, at a CAGR of 19.1%. ...
(Date:3/9/2016)... GARDENS, Fla. , March 9, 2016 /PRNewswire/ ... management authentication and enrollment solutions, today announced the ... DigitalPersona ® Altus multi-factor authentication platform. ... and InfoSec managers to step-up security where it,s ... Washington, DC . ...
Breaking Biology News(10 mins):
(Date:5/26/2016)... , May 26, 2016 Despite ... see value in this space. Today,s pre-market research on ActiveWallSt.com ... Radius Health Inc. (NASDAQ: RDUS ), Cerus Corp. ... ARWR ), and Five Prime Therapeutics Inc. (NASDAQ: ... technical briefings at: http://www.activewallst.com/ ...
(Date:5/25/2016)... ... May 25, 2016 , ... Lajollacooks4u has become a rising hotspot for ... one of its top attractions. Fortune 500 companies, such as Illumina, Hewlett-Packard, Qualcomm ... and intimate team-building experience. , Each event kicks off with an olive oil and ...
(Date:5/25/2016)... ... May 25, 2016 , ... The American Medical Informatics Association ... the National Coordinator for Health IT (ONC) outlining a measurement approach to interoperability ... available when and where it was needed. The organization of health informatics professionals ...
(Date:5/25/2016)... ... May 25, 2016 , ... Biohaven ... Administration (FDA) has granted the company’s orphan drug designation request covering BHV-4157 for ... designation granted by the FDA. , Spinocerebellar ataxia is a rare, debilitating ...
Breaking Biology Technology: