Navigation Links
Nitrogen from humans pollutes remote lakes for more than a century
Date:12/17/2011

Nitrogen derived from human activities has polluted lakes throughout the Northern Hemisphere for more than a century and the fingerprint of these changes is evident even in remote lakes located thousands of miles from the nearest city, industrial area or farm.

The findings, published in the journal Science Dec. 16, are based on historical changes in the chemical composition of bottom deposits in 36 lakes using an approach similar to aquatic archeology. More than three quarters of the lakes, ranging from the U.S. Rocky Mountains to northern Europe, showed a distinctive signal of nitrogen released from human activities before the start of the 20th century, said Gordon Holtgrieve, a postdoctoral researcher at University of Washington School of Aquatic and Fishery Sciences and lead author of the report. The UW and a dozen other research institutions contributed to the research.

"When it comes to nitrogen associated with humans, most studies have focused on local and regional effects of pollution and have missed the planetary scale changes," Holtgrieve said. "Our study is the first large-scale synthesis to demonstrate that biologically-active nitrogen associated with human society is being transported in the atmosphere to the most remote ecosystems on the planet."

Burning fossil fuel and using agricultural fertilizers are two key ways humans increase the amount of nitrogen entering the atmosphere. Once in the atmosphere, this nitrogen is distributed by atmospheric currents before being deposited back on Earth in rain and snow, often thousands of miles from the source.

"Turns out the world, for nitrogen, is a much smaller place than we'd assumed," said co-author Daniel Schindler, UW professor of aquatic and fishery sciences and the Harriet Bullitt Chair in conservation.

Although nitrogen is a vital nutrient for life so much so that farmers apply fertilizers containing it to bolster food crops too much nitrogen can b
'/>"/>

Contact: Sandra Hines
shines@uw.edu
206-543-2580
University of Washington
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Nitrogen applied
2. Lichens function as indicators of nitrogen pollution in forests
3. Cropland diversity reduces nitrogen pollution
4. Researchers call for nitrogen and phosphorus reductions to combat eutrophication in aquatic systems
5. Tree species composition influences nitrogen loss from forests
6. Illinois Soil Nitrogen Test measures microbial nitrogen
7. UC Davis begins $2.8 million in studies of agricultural nitrogens impacts
8. Nitrogen research shows how some plants invade, take over others
9. Ozone, nitrogen change the way rising CO2 affects Earths water
10. Nitrogen fixation and phytoplankton blooms in the southwest Indian Ocean
11. Is nitrogen the new carbon?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nitrogen from humans pollutes remote lakes for more than a century
(Date:2/11/2015)... , February 11, 2015 ... report "Access Control Market by Product (Cards and Readers, ... Military and Defense, Government, Industrial, Healthcare, Education) and By ... by MarketsandMarkets, the Access Control Market is ... growing at a CAGR of 10.6% between ...
(Date:2/9/2015)... , Feb. 9, 2015  Lintec of America recently ... for carbon nanotube (CNT) macrostructures, including sheets, yarns and ... (UTD). Leveraging the vast industrial resources of ... Japan , Lintec of America is forming the ... TX , focusing on scaling up the manufacturing ...
(Date:2/5/2015)... , Feb. 5, 2015  Marken is starting ... company and has launched a new marketing campaign to ... Organization (CLO).  The new campaign focuses on First ... protocol and shipments. The first headline in ... aligns Marken,s priorities with its client,s priorities. Marken recognizes ...
Breaking Biology News(10 mins):Access Control Market Worth $10.4 Billion by 2020 2Access Control Market Worth $10.4 Billion by 2020 3Access Control Market Worth $10.4 Billion by 2020 4Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 2Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 3Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 4Marken Launches New Patient-Centric Campaign 2
... and the ones that stray are biological puzzles among Pacific ... thousands of miles to sea and back to the streams ... Idaho in which an occasional male stays put and matures ... fertilize eggs at even that diminutive size, says Thomas P. ...
... In mouse models of intestinal cancer, use of an ... by a high-fat Western-style diet - even when several ... animals, say researchers from the Albert Einstein Cancer Center. ... 96th Annual Meeting of the American Association for Cancer ...
... A new study is providing scientists with a better ... patients fail to respond to treatment even when existing ... The research, published in the April issue of Cancer ... to combat drug resistance and treatment failure for children ...
Cached Biology News:To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter 2To sea or not to sea: When it comes to salmon sex, size sometimes doesn't matter 3NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses 2NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses 3Multiple-drug resistant gene expression pattern predicts treatment outcome for pediatric leukemia 2
(Date:2/26/2015)... Los Angeles, CA (PRWEB) February 26, 2015 ... organizing an online demonstration to support life extension technologies ... to 8pm UTC, Universal Coordinated Time, on March 21st ... around the world. , Eric Schulke, Founder of ... we must act with urgency. The Movement for Indefinite ...
(Date:2/26/2015)... PA (PRWEB) February 26, 2015 ... 9 -12, at the Ernest N. Morial Convention ... exhibitors (count as of February 19, 2015) displaying ... in industrial, academic, and government labs. The Exposition ... as, but not limited to, analytical chemistry; drug ...
(Date:2/26/2015)... Fla. , Feb. 26, 2015  Dyadic ... company whose patented and proprietary technologies are used ... proteins for the bioenergy, bio-based chemical, biopharmaceutical and ... report its financial results for year ending December ... 11, 2015 and will host a conference call ...
(Date:2/26/2015)... WOODLANDS, Texas , Feb. 26, 2015   Lexicon ... that Lexicon management will present at the Cowen 35 th ... at 8:40 a.m. EST in Boston . ... programs and milestones. A webcast of the presentation ... An archived version of the presentation will be available at ...
Breaking Biology Technology:Indefinite Life Extension Activists Organize Online Demonstration 2Indefinite Life Extension Activists Organize Online Demonstration 3Pittcon 2015 Announces Exposition Highlights 2Dyadic International To Announce Fourth Quarter 2014 Financial Results And Host Conference Call On Wednesday, March 11, 2015 2Dyadic International To Announce Fourth Quarter 2014 Financial Results And Host Conference Call On Wednesday, March 11, 2015 3Lexicon To Present At The Cowen 35th Annual Health Care Conference 2
... Skype , voice over IP software and service (download ... from my computer to anyone else on the Skype platform. ... wanted to evaluate the software so I could speak from ... was a soaring international phone bill. If I could circumvent ...
... Hartford, Wis. Emergency vehicle drivers have a new ... Hydro Electronic Devices dashboard video screens. Replacing the traditional ... larger than seven inches, HED has attempted to streamline controls ... to pay attention to, said Keith Schmitz of the ...
... television ad in which George Bush and Bill Clinton urge Americans ... because the appeal comes from two former presidents, but because of ... has dawned. , ,Bush and Clinton point viewers to the ... to coordinate the millions of dollars that have streamed in over ...
Cached Biology Technology:VoIP breaks out, but let's hope it doesn't become a verb 2VoIP breaks out, but let's hope it doesn't become a verb 3Hartford firm brings video to the dashboard 2Hartford firm brings video to the dashboard 3Outpouring of tsunami relief displays power of the Internet 2Outpouring of tsunami relief displays power of the Internet 3
... ,High Quality, Functionally-Validated, Ion Channel Cell Lines ... having a critical role in nerve and ... function in pain, CNS and the heart. ... investigated in therapeutic areas, such as neuropathic ...
Mouse monoclonal antibody raised against a partial recombinant ALPK3. NCBI Entrez Gene ID = ALPK3...
Mouse monoclonal antibody raised against a partial recombinant MYO7A. NCBI Entrez Gene ID = MYO7A...
... Channel Cell Lines ,High Quality, Functionally-Validated, Ion ... well known for having a critical role ... have a key function in pain, CNS ... channels have been investigated in therapeutic areas, ...
Biology Products: