Navigation Links
To climate-change worries, add 1 more: Extended mercury threat
Date:1/7/2009

GAINESVILLE, Fla. Mercury pollution has already spurred public health officials to advise eating less fish, but it could become a more pressing concern in a warmer world.

So suggests a paper that appears in a recent issue of the journal Oecologia.

Sue Natali, a postdoctoral associate in botany at the University of Florida and the paper's lead author, compared mercury levels in soils under trees growing in air enriched with carbon dioxide to soil beneath trees in ambient air. Carbon dioxide, the main greenhouse gas, has increased nearly 40 percent since the industrial revolution and is expected to continue climbing unless power plant and other emissions are restricted or curtailed.

Natali's main finding: Soil samples from the carbon dioxide-enriched soil contained almost 30 percent more mercury apparently because the soil had greater capacity than soil in today's atmosphere to trap and hold on to mercury.

On the one hand, Natali said, that increased capacity could slow the mercury's release into water its main conduit to aquatic wildlife and the fish that pose a hazard to people. On the other, it means that even if policy makers manage to ban or severely restrict mercury emissions, the metal will remain a source of pollution for a long time.

"From the time you cut off mercury emission to the time it positively affects fish, you might have this lag, because the soils hold on to the mercury better," Natali said.

Global mercury emissions today range from 4,400 to 7,500 tons per year, according to the Environmental Protection Agency. Natural sources such as volcanoes account for about half, with coal-fired power plants, smelters and incinerators contributing the remainder.

When mercury is belched into the air, it returns to Earth via rain, with bacteria and other natural processes converting it to methylmercury in lakes, rivers and oceans. Methylmercury builds up through the food chain, with t
'/>"/>

Contact: Sue Natali
natali@ufl.edu
352-392-1894
University of Florida
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Oregons Rogue River Basin to face climate-change hurdles
2. Climate-change set-back for acidified rivers
3. Green coffee-growing practices buffer climate-change impacts
4. UC Davis researcher leads climate-change discovery
5. Extended cyclone relief efforts aided from space
6. UK research community gets extended access to ScienceDirect
7. Extended wakefulness, combined with alcohol, severely impairs driving performance
8. New model predicts hot spots for mercury in fish
9. Shrimp trawling may boost mercury in red snapper, study suggests
10. Pitt researchers use fluorescence to develop method for detecting mercury in fish
11. Methylmercury warning
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... Spanish researchers have detected an unknown interaction between microorganisms ... introduced into a droplet of salt water and is ... to create biomineralogical biosaline 3D morphologically complex formations, where ... are revived. The discovery was made by chance with ... the Astrobiology journal and may help to ...
(Date:7/24/2014)... sobering examples of how wildlife loss leads to conflict ... by Wildlife Conservation Society (WCS) Health & Ecosystems: ... calls for an interdisciplinary approach to tackle global biodiversity ... about 15% of the world,s people and provides protein ... It should come as no surprise that today,s unprecedented ...
(Date:7/24/2014)... 2014) Scientists at The New York Stem ... closer to creating a viable cell replacement therapy ... , For the first time, NYSCF scientists ... skin samples of patients with primary progressive multiple ... to induce these stem cells into becoming oligodendrocytes, ...
Breaking Biology News(10 mins):Bacteria manipulate salt to build shelters to hibernate 2New study draws links between wildlife loss and social conflicts 2NYSCF scientists 1 step closer to cell therapy for multiple sclerosis patients 2
... One of the remaining challenges for evolutionary developmental studies ... teeth, is how their tooth shape is altered during ... their Japanese colleagues from the University of Kioto now ... of tooth shape features called cusps. Position and shape ...
... a new detailed map of the three-dimensional terrain of ... critical for communication in the brain and nervous system. ... resolved at nanometer scale, or one-billionth of a meter, ... of the synaptic landscape. , Using the map as ...
... When it comes to the deadly skin cancer ... may better provide insight into the disease's development, ... Medical Institute predoctoral fellow at Stanford University School ... associated with melanoma development, scientists have not been ...
Cached Biology News:Mechanism regulating tooth shape formulation found 2The synapse is a shotgun 2The synapse is a shotgun 3Researchers use RNAi libraries to identify regulators of apoptosis and chemoresistance 2Researchers use RNAi libraries to identify regulators of apoptosis and chemoresistance 3
(Date:7/25/2014)... , July 25, 2014 Research ... "Global Metabolomics Market 2014-2018" report to ... Metabolomics or Metabonomics is the ... has become a new experimental technique that is ... environmental sciences. Metabolites are small molecules that are ...
(Date:7/25/2014)... Lawrence Livermore scientists Charles Westbrook and William Pitz ... The World's Most Influential Scientific Minds ." , Westbrook ... were identified by analyzing citation data over the last ... work (2002-2012 and 2012-2013). The two were selected from ... , "This recognition is a great honor for Charlie ...
(Date:7/25/2014)... , July 25, 2014 Sinovac Biotech Ltd. (Nasdaq: ... in China , today announced that it ... ended June 30, 2014, after market close on Thursday, August ... prior to the market opening on Friday, August 15, 2014, ... p.m. China Standard Time) to review the Company,s financial results ...
(Date:7/24/2014)...  Now available is a stem cell therapy that ... , located in Guadalajara, Mexico , ... new health option: stem cell therapies for sports ... suffer from joint and muscle injuries due to professional ... rotator cuff, tennis elbow, and knee injuries. Throughout life ...
Breaking Biology Technology:Global Metabolomics Market 2014-2018: Key Vendors are Agilent, Bio-Rad, Bruker, Human Metabolome and Metabolon 2Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4Sinovac to Host Conference Call to Report Second Quarter 2014 Unaudited Financial Results 2Stem Cells In Sports Injuries, Joints And Muscular Pain 2Stem Cells In Sports Injuries, Joints And Muscular Pain 3
... faculty members will explore energy from the ocean, manufacturing ... to prestigious Faculty Early Career Development (CAREER) Awards from ... million over five years, went to assistant professors Yannis ... and Wheeler Ruml of the computer science department. ...
... Calif., Feb. 21, 2012  Life Technologies Corporation (NASDAQ: ... Barclays Capital Global Healthcare Conference on Wednesday, March 14 ... Vice President and Chief Financial Officer, will present on ... presentation, which will be available for three weeks following ...
... leaders from the medical community in Europe and the U.S. ... liver disease and sepsis, and in cardiac surgery, during ... "Albumin in Clinical Fluid Management ." (Logo: ... a frank and provocative exchange about the uses and effectiveness ...
Cached Biology Technology:NSF CAREER grants support ocean energy, microforming, computer planning 2Life Technologies to Present at Barclays Capital Global Healthcare Conference 2Medical Experts Who Participated in CSL Behring's Key Issues Dialogue Prefer Albumin for Fluid Management 2Medical Experts Who Participated in CSL Behring's Key Issues Dialogue Prefer Albumin for Fluid Management 3
Human endothelial progenitor cells, For immunohistochemistry (IHC) Cell Chip with Human Peripheral Blood Dendritic Cells and EPCs...
Plasmacytoid dendritic cells, BDCA-4+, For immunohistochemistry (IHC) Cell Chip with Human Umbilical Cord Blood Dendritic Cells...
...
...
Biology Products: