Navigation Links
Global nitrogen availability consistent for past 500 years, linked to carbon levels
Date:3/21/2013

MANHATTAN -- A Kansas State University research team has found that despite humans increasing nitrogen production through industrialization, nitrogen availability in many ecosystems has remained steady for the past 500 years. Their work appears in the journal Nature.

"People have been really interested in nitrogen in current times because it's a major pollutant," said Kendra McLauchlan, assistant professor of geography and director of the university's Paleoenvironmental Laboratory. "Humans are producing a lot more nitrogen than in the past for use as crop fertilizer, and there is concern because excess levels can cause damage. The mystery, though, is whether the biosphere is able to soak up this extra nitrogen and what that means for the future."

Nitrogen is a key component of the ecosystem and the largest regulator of plant growth. It determines how much food, fuel and fiber the land can produce. It also determines how much carbon dioxide plants remove from the atmosphere, and it interacts with several components of the climate system. Excessive amounts of nitrogen in ecosystems contribute to global warming and impairment of downstream ecosystems.

McLauchlan worked with Joseph Craine, research assistant professor in biology; Joseph Williams, postdoctoral research associate; and Elizabeth Jeffers, postdoctoral research associate at the University of Oxford. The team published their findings, "Changes in global nitrogen cycling during the Holocene epoch," in the current issue of Nature.

In the study the team also looked at how nitrogen availability changed thousands of years ago.

Roughly 15,000 years ago, the Earth began to warm, melting many glaciers and ice sheets that covered the landscape. Researchers found that Earth experienced an 8,000-year long decline in nitrogen availability as temperatures rose and carbon and nitrogen became locked up in soils. According to researchers, how the nitrogen cycle
'/>"/>

Contact: Kendra McLauchlan
mclauch@k-state.edu
785-532-6155
Kansas State University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Novo Nordisk and BGI establish global collaboration framework
2. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
3. Global warming threat to coral reefs: Can some species adapt?
4. 1 solution to global overfishing found
5. Young researcher taking fight against global killer to the next level in Vietnam
6. Heightened Security Threats and Economic Issues Provide Fillip to Global Civil and Military Biometrics Market, Says Frost & Sullivan
7. Global Information Inc. Announces Discounted Conference Registration For Bio-IT World Asia and Biodetection Technologies 2012
8. Global effort launched to save turtles from extinction
9. New Biotech and Pharmaceutical Market Research from Global Information Inc Forecasts Strong Growth Coming Out of Recession
10. 2012 Forecast for US Molecular Diagnostics Market Now Available From Global Information Inc.
11. Desert to Rainforest global classroom links future teachers, classrooms in Phoenix and Panama
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... Calif. , Nov. 20, 2014   Atmel® ... leader in microcontroller (MCU) and touch technology solutions, today ... temperature sensors with the widest V cc ... higher temperature accuracy and faster I 2 C bus ... and serial EEPROM memory making them ideal for consumer, ...
(Date:11/15/2014)... YORK , Nov. 13, 2014  While we may ... technology Doctor McCoy used in "Star Trek" to gain instant ... tools designed to work with smartphones and tablets for monitoring ... of the healthcare world. This may seem a tad Orwellian ... ready to adopt some of these technological opportunities into their ...
(Date:11/7/2014)... 2014  In conjunction with the Glendale ... Community Foundation of the Verdugos has announced the " ... a $250,000 initiative to keep the Verdugo Regional Crime Lab ... six months of existence, the Lab has processed more than ... law enforcement. "Because our number one priority is ...
Breaking Biology News(10 mins):Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2
... With only two weeks to go and almost a ... 2013 have reached their final stages. This year,s conference ... Simons will deliver the opening keynote lecture and explain ... cells work. In further keynote lectures, Hans Clevers will ...
... 9, 2013 Cytos Biotechnology Ltd (SIX:CYTN) today ... CYT003, a first-in-class immune modulator in clinical development as a ... data published in the March issue of The Journal ... at the European Respiratory Society Annual Congress in ...
... 2013 Disease-causing bacteria stink literally and the ... the basis for a faster and simpler new way to ... here today at the 246th National Meeting & Exposition of ... The new test produces results in 24 hours, compared ...
Cached Biology News:All set for The EMBO Meeting 2013 2Cytos Biotechnology Presents Additional Results From Phase 2a Study of CYT003 for the Treatment of Allergic Asthma 2Cytos Biotechnology Presents Additional Results From Phase 2a Study of CYT003 for the Treatment of Allergic Asthma 3Cytos Biotechnology Presents Additional Results From Phase 2a Study of CYT003 for the Treatment of Allergic Asthma 4Cytos Biotechnology Presents Additional Results From Phase 2a Study of CYT003 for the Treatment of Allergic Asthma 5New 'artificial nose' device can speed diagnosis of sepsis 2
(Date:11/27/2014)... -- Research and Markets  has announced ... Report 2014" report to their offering. ... Palmitic Acid Industry Report 2014 is a professional and ... palmitic acid industry. The report provides a ... and industry chain structure. The palmitic acid market analysis ...
(Date:11/26/2014)... 21, 2014 (PRWEB) November 26, 2014 ... communications network, today announced the organization has won a ... Club Awards. Digitas Health LifeBrands was honored with a ... other PHCG agencies received eight Awards of Excellence. ... aspects of pharmaceutical advertising and promotion. The Awards provide ...
(Date:11/26/2014)... The announced sales of three healthcare units ... to expand in non-healthcare areas, says Kalorama Information. Siemens ... firm says that  Siemens is the third largest company ... the IVD market , with 5.5 billion in IVD ... would likely affect IVD market shares.  ...
(Date:11/26/2014)... PMG Research, Inc. announced today the ... network of sites that provide clinical research services to pharmaceutical ... lives through its partnerships with large physician practices and integrated ... locations in the Southeastern United States and spans over 60 ... board will be held by: Dr. Robert Holmes, MD, ...
Breaking Biology Technology:Global Palmitic Acid Industry Report 2014 2Publicis Healthcare Wins 20 Rx Club Awards 2Publicis Healthcare Wins 20 Rx Club Awards 3Kalorama: Sale of Three Siemens Healthcare Units Raises Questions About Firm's IVD Future 2PMG Research Names Medical Advisory Board 2PMG Research Names Medical Advisory Board 3
... ... ... --> ... var first_result; // Results are keyed by longUrl, so we need to grab the first one. for (var ...
... ... ... ... are keyed by longUrl, so we need to grab the first one. for (var r in data.results) { first_result ...
... 27 PDL BioPharma, Inc. (PDL, ... it has entered into separate privately negotiated exchange agreements under ... the Company,s outstanding 2.00% Convertible Senior Notes due February 15, ... holders of the 2012 Notes will receive $92.0 million in ...
Cached Biology Technology:Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 2Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 3Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 4Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 5Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 6Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 7Enerkem Successfully Meets Federal Environmental Assessment Requirements for its Mississippi Waste-to-Ethanol Plant 8The New deCODE Map of the Human Genome 2The New deCODE Map of the Human Genome 3The New deCODE Map of the Human Genome 4The New deCODE Map of the Human Genome 5The New deCODE Map of the Human Genome 6The New deCODE Map of the Human Genome 7The New deCODE Map of the Human Genome 8The New deCODE Map of the Human Genome 9PDL BioPharma Announces Exchange to Retire 2.00% Convertible Senior Notes Due February 15, 2012 2PDL BioPharma Announces Exchange to Retire 2.00% Convertible Senior Notes Due February 15, 2012 3
EML1 (K-16)...
Bovine Coronary Artery Endothelial Cells (BCAEC) (>500,000 cells)...
Bovine Coronary Artery Smooth Muscle Cells (BCASMC) (>500,000 cells)...
Bovine Pulmonary Artery Endothelial Cells (BPAEC) (>500,000 cells)...
Biology Products: