Navigation Links
Dodds contributes to new national study on nitrogen water pollution
Date:12/20/2010

MANHATTAN, KAN. -- A Kansas State University professor is part of a national research team that discovered that streams and rivers produce three times more greenhouse gas emissions than estimated by the Intergovernmental Panel on Climate Change.

Through his work on the Konza Prairie Biological Station and other local streams, Walter Dodds, university distinguished professor of biology, helped demonstrate that nitrous oxide emissions from rivers and streams make up at least 10 percent of human-caused nitrous oxide emissions -- three times greater than current estimates by the climate change panel.

"This research deals with two important issues," Dodds said. "First, nitrous oxide is a potent greenhouse gas. Second, nitrous oxide also destroys ozone in the upper atmosphere, exposing us to more ultra violet radiation."

The research, "Nitrous oxide emission from denitrification in stream and river networks," appears in this week's Online Early Edition of the Proceedings of the National Academy of Sciences.

For the article, researchers from 23 institutions -- including K-State -- measured nitrous oxide production in 72 streams that drain native, urban or agricultural lands. Nine of those streams were in the Manhattan area, with three at Konza.

The level of nitrous oxide in streams and rivers is related to human activities that can release nitrogen into the environment, such as sewage runoff or crop fertilization. When this nitrogen reaches rivers and streams, it undergoes denitrification, a microbial process that converts nitrogren to nitrous oxide gas, called N2O, and an inert gas called dinitrogen, or N2.

As a greenhouse gas, nitrous oxide has global warming potential that is 300-fold greater than carbon dioxide. In the past century, concentration of atmospheric nitrous oxide has increased 20 percent, making it a strong contributor to climate change and ozone destruction.

"We show that river netw
'/>"/>

Contact: Walter Dodds
wkdodds@k-state.edu
785-532-6998
Kansas State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Scientists discover why a mothers high-fat diet contributes to obesity in her children
2. Deranged calcium signaling contributes to neurological disorder, UT Southwestern researchers find
3. New research shows high-quality protein in eggs contributes to power, strength and energy
4. IFAR contributes to study that finds genes that influence the start of menstruation
5. Scientists discover new genetic variation that contributes to diabetes
6. Texas A&M spring graduate contributes to mental retardation research published in Nature
7. Think saturated fat contributes to heart disease? Think again
8. Scientists discover molecular switch that contributes to cellular aging process
9. BIO-key(R) International To Exhibit at Oracle OpenWorld
10. Sentara begins international trial -- open at only 24 US locations
11. UW science photo takes second in national contest
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... Neuregulin 1 (NRG1) is a pleiotropic factor characterized ... alternative splicing of exons that confer to the ... role for both the myelination occurring during development ... the peripheral nerve: axon degeneration, axon regrowth, remyelination ... Western Australia have discovered that the soluble NRG1 ...
(Date:7/25/2014)... development of diffusion tensor tractography (DTT), which is ... and estimation for three motor tracts, such as ... corticoreticular pathway became possible. The corticospinal tract is ... motor function in the human brain. Several studies ... by transtentorial herniation. In addition, some studies have ...
(Date:7/25/2014)... at the Stowers Institute for Medical Research ... receptors, and found pheromones crucial to triggering the mating ... receptors helps a male mouse detect pheromones that indicate ... receptors lets him know if the female mouse is ... are critical to trigger mating. Stowers, researchers believe mice ...
Breaking Biology News(10 mins):It takes two to court 2It takes two to court 3
... and Yuh Nung Jan, PhD, of the Howard Hughes ... will jointly receive the 2012 Neuroscience Prize of The ... contributions to the field of molecular neurobiology, particularly their ... activity and on how brain cells diversify and specialize ...
... Calif.) You pick up your cell phone and dial ... At. A. Time. Because you haven,t actually typed the number ... sequence of distinct movements. After dialing the number a ... a series of three successive bursts of movement: the area ...
... use plants as ,green phones, for communication with other ... same plants insects are also able to leave ,voicemail, ... via their effects on soil fungi. Researchers from the ... discovered this unique messaging service in the ragwort plant. ...
Cached Biology News:UCSF pair win Gruber Foundation Neuroscience prize 2UCSF pair win Gruber Foundation Neuroscience prize 3UCSF pair win Gruber Foundation Neuroscience prize 4Study by UC Santa Barbara psychologists reveals how brain performs 'motor chunking' tasks 2Study by UC Santa Barbara psychologists reveals how brain performs 'motor chunking' tasks 3Voicemail discovered in nature 2
(Date:7/24/2014)... trained personnel, and detection dogs to safeguard airports ... revolutionary new electronic chip with nano-sized chemical sensors ... , The groundbreaking nanotechnology-inspired sensor, devised by Prof. ... of Chemistry and Center for Nanoscience and Nanotechnology, ... up the scent of explosives molecules better than ...
(Date:7/24/2014)... to materialise. Yet, scientists are making progress in ... One such approach relies on quantum dotsa kind ... electric field. A new study demonstrates that changing ... (TQDs) with electrical impulses can help better control ... be used as quantum information units, which would ...
(Date:7/24/2014)... to settle into equilibriuma state of unchanging balance ... of non-equilibrium conditions where new possibilities lie. Non-equilibrium ... such as temperature fluctuations, freezing and melting, or ... body temperature, airplanes to fly, and the Earth ... even though these conditions exist naturally and are ...
(Date:7/24/2014)... Research and Markets has announced the addition ... Market 2014-2018" report to their offering. ... the study of the gene and its functions and ... of proteomes or sets of proteins by using molecular ... mapping of genes and DNA sequencing to understand the ...
Breaking Biology Technology:Nano-sized chip 'sniffs out' explosives far better than trained dogs 2New approach to form non-equilibrium structures 2Global Genomics and Proteomics Analytical Instruments Market 2014-2018: Key Vendors are Agilent, Bio-Rad , F. Hoffmann, La Roche, Illumina, PerkinElmer and Thermo Fisher Scientific 2
... WA and VANCOUVER, Nov. 5 /PRNewswire-FirstCall/ - OncoGenex,Pharmaceuticals (NASDAQ: ... financial results will be released on Monday, November 10, ... and live webcast at 4:30,p.m. EDT that afternoon. Management ... update on the business and product pipeline., To ...
... 4 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc.,(TSX:ONC, NASDAQ:ONCY) ... results for the three and nine-month periods ... Decision, Oncolytics made a decision in ... randomized trial using the combination of REOLYSIN(R) ...
... N.J., Nov. 4 Cambrex,Corporation (NYSE: CBM ) reports third ... (Logo: http://www.newscom.com/cgi-bin/prnh/20000613/CAMBREXLOGO ), -- Sales increased ... third quarter 2007. -- Adjusted EBITDA for the quarter was ... $9.7 million last year. -- Debt, net of cash was ...
Cached Biology Technology:OncoGenex Pharmaceuticals to Release Third Quarter Financial Results 2Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 2Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 3Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 4Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 5Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 6Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 7Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 8Oncolytics Biotech Inc. Announces 2008 Third Quarter Results 9Cambrex Reports Third Quarter 2008 Results 2Cambrex Reports Third Quarter 2008 Results 3Cambrex Reports Third Quarter 2008 Results 4Cambrex Reports Third Quarter 2008 Results 5Cambrex Reports Third Quarter 2008 Results 6Cambrex Reports Third Quarter 2008 Results 7Cambrex Reports Third Quarter 2008 Results 8Cambrex Reports Third Quarter 2008 Results 9Cambrex Reports Third Quarter 2008 Results 10Cambrex Reports Third Quarter 2008 Results 11Cambrex Reports Third Quarter 2008 Results 12Cambrex Reports Third Quarter 2008 Results 13Cambrex Reports Third Quarter 2008 Results 14
... loxP-PGK-gb2-neo-loxP template is designed to allow ... cells. The loxP-PGK-gb2-neo-loxP template encodes ... a prokaryotic promoter (gb2) for expression ... a eukaryotic promoter (PGK) for expression ...
... depletion cocktail is tailored to ... from suspensions of rat spleen ... the StemSep (or compatible 0.5 ... system. The CD4+ T cell ...
Standard Fluka For microscopy (Hist.) redox indicator...
... The VSOS-4 Orbital Shaker is designed ... to provide a uniform motion that is both ... The VSOS-4 Orbital Shaker provides a smooth, quiet, ... for a wide range of laboratory applications such ...
Biology Products: