Navigation Links
Global rivers emit 3 times IPCC estimates of greenhouse gas nitrous oxide
Date:12/20/2010

ing nitrogen-enriched urbanized and agricultural watersheds, highlighting the importance of managing nitrogen before it reaches open water," Gholz says. "This new global emission estimate is startling."

Atmospheric nitrous oxide concentration has increased by some 20 percent over the past century, and continues to rise at a rate of about 0.2 to 0.3 percent per year.

Beaulieu and colleagues, say the global warming potential of nitrous oxide is 300-fold greater than carbon dioxide.

Nitrous oxide accounts for some six percent of human-induced climate change, scientists estimate.

They believe that nitrous oxide is the leading human-caused threat to the atmospheric ozone layer, which protects Earth from harmful ultraviolet radiation from the Sun.

Researchers had estimated that denitrification in river networks might be a globally important source of human-derived nitrous oxide, but the process had been poorly understood, says Beaulieu, and estimates varied widely.

While more than 99 percent of denitrified nitrogen in streams is converted to the inert gas dinitrogen rather than nitrous oxide, river networks are still leading sources of global nitrous oxide emissions, according to the new results.

"Changes in agricultural and land-use practices that result in less nitrogen being delivered to streams would reduce nitrous oxide emissions from river networks," says Beaulieu.


'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert

Page: 1 2

Related biology news :

1. Malaspina 2010, the biggest ever expedition on global change, sets sail
2. Reportlinker Adds Biometrics: Technologies and Global Markets
3. Reportlinker Adds Global Biochip Markets: Microarrays and Lab-on-a-Chip
4. Super-sized world: Conference addresses global obesity epidemic, explores policies, interventions
5. Reportlinker Adds Global Flow Cytometers Industry
6. VaxTrac Receives $100,000 Grand Challenges Explorations Grant for Innovative Global Health Research
7. Tropical forest diversity increased during ancient global warming event
8. Scientific Grand Challenges identified to address global sustainability
9. Global Leaders Combine Forces to Provide Identity Security Documents for INTERPOL
10. Entrust President and CEO Bill Conner Addresses Global Dignitaries During INTERPOL 79th General Assembly
11. Global Obesity Summit 2010 in Jackson addresses growing epidemic at ground zero
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... from Washington, Oregon, northern California, and Alaska totaled 515 ... of 2014, an increase of more than 10 percent ... Forest Service,s Pacific Northwest Research Station reported today. During ... 4 percent to 247 million board feet. , The ... than 5 percent to $390 million in the same ...
(Date:8/28/2014)... at Ludwig-Maximilians-Universitaet (LMU) in Munich have assigned a ... of predatory arthropods. These animals lived in shallow ... related forms found in Jurassic strata. , ... shallow marine habitat and were fossilized some 435 ... denizens of the Silurian seas although they ...
(Date:8/27/2014)... MADISON, Wis. The mechanical force that a single fungal ... seem vanishingly small, but it plays a heavy role in ... biology. In fact, it may not be too much of ... onto land without the ability to respond to the touch ... Jean-Michel An, a professor of agronomy at the University of ...
Breaking Biology News(10 mins):West coast log exports up, lumber exports down in second quarter of 2014 2Paleontology: Oldest representative of a weird arthropod group 2A touching story: The ancient conversation between plants, fungi and bacteria 2A touching story: The ancient conversation between plants, fungi and bacteria 3
... asked to help find out how a dog,s lifestyle affects ... its kind, aims to assess how factors such as diet ... illness. The initiative, led by the Royal (Dick) School ... of Edinburgh, aims to recruit thousands of Labrador Retriever puppies ...
... extinction of woolly mammoths and other large mammals more than ... to the same type of "trophic cascade" of ecosystem disruption ... decline of predators such as wolves, cougars, and sharks. ... by human disruption of ecosystems, a new study concludes, but ...
... up with right number of cells in all the right ... insight into how this process is co-ordinated in plants. An ... University in the USA, have linked the process of cell ... A protein called Short-root, already known to play a part ...
Cached Biology News:Pups sign up for bid to boost pet health 2'Trophic cascades' of disruption may include loss of woolly mammoth, saber-toothed cat 2'Trophic cascades' of disruption may include loss of woolly mammoth, saber-toothed cat 3'Trophic cascades' of disruption may include loss of woolly mammoth, saber-toothed cat 4Breakthrough in understanding cell development 2
(Date:8/29/2014)... August 29, 2014 The global ... billion in 2019. It is expected to grow ... 2019, and was valued at $1.8 billion in ... Transparency Market Research. , For more information regarding ... . , The research report, titled “Companion Diagnostics ...
(Date:8/29/2014)... 2014 /PRNewswire/ - iCo Therapeutics ("iCo" or "the ... results for the six months ended June 30, ... Canadian dollars and presented under International Financial Reporting ... , Announced top-line results related to ... for subjects enrolled in the Phase 2 iDEAL ...
(Date:8/29/2014)... Due to a misstatement posted by the Family Resource ... Center, LLC ( ASCTC ) was reported as an entity ... benefit ALS patients. Because of ASCTC's exclusive focus on ... therapeutic applications, FRC listed ASCTC as one of several alternatives ... not to support research that requires the death of human ...
(Date:8/28/2014)... August 28, 2014 SPIE Fellow Glenn ... and Optical Science and Director of the Center for ... Carolina at Charlotte, and co-founder and Chairman of the ... as the 2015 Vice President of SPIE, the international ... Philip Stahl announced recent election results at the Annual ...
Breaking Biology Technology:Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3iCo Therapeutics Announces Second Quarter 2014 Financial Results 2iCo Therapeutics Announces Second Quarter 2014 Financial Results 3iCo Therapeutics Announces Second Quarter 2014 Financial Results 4The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 2The Adult Stem Cell Technology Center, LLC Declines ALS Ice Bucket Challenge Donors Wishing to Support Ethical Research for New Stem Cell Therapies 3Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2
Whitewater, Wis . - Sharon Ethanol , a subsidiary of <a...
... the online social media era, there are many companies trying ... ranged from total site revamps to well thought-out, limited-term campaigns ... interesting to review some recent examples demonstrating these concepts and ... , ,With Michael Dell back at the helm, Dell ...
... note: John Wade, VP/CIO, Saint Luke's Health System of Kansas City, ... Conference May 9 and 10 in Madison. He recently spoke ... assessment of the state of health information technology. , , ... of electronic health records? , , John Wade ...
Cached Biology Technology:On the case: Web lessons for connecting with customers 2On the case: Web lessons for connecting with customers 3On the case: Web lessons for connecting with customers 4On the case: Web lessons for connecting with customers 5Visions: Wade offers straight talk on e-medical records 2Visions: Wade offers straight talk on e-medical records 3Visions: Wade offers straight talk on e-medical records 4Visions: Wade offers straight talk on e-medical records 5
... using a protein engineering approach that introduced amino ... wild-type DNase I. These changes markedly increase the ... is a versatile enzyme that has a 6-fold ... maintain at least 50% of peak activity in ...
Request Info...
Request Info...
... Ligase catalyzes the formation of a phosphodiester ... in nicked duplex DNA molecules or between ... complementary strand at 45 - 65?. Tfi ... much higher temperatures than conventional DNA ligases, ...
Biology Products: