Navigation Links
Hotspots of mercury contamination identified in eastern North America

A US and Canadian research team surveying mercury contamination in fish and birds in the northeastern United States and southeastern Canada has identified five "hotspots" where concentrations of the element exceed those established for human or wildlife health. The team focused on levels of the potent neurotoxin in yellow perch and common loons, but it also took into account contamination in other fish, birds, and mammals. In addition to these hotspots in New England, New York, and Nova Scotia, the researchers found nine "areas of concern" in these regions and in Quebec and New Brunswick. Findings from the team's analysis are summarized in the January 2007 issue of BioScience.

The hotspots are believed to result from complex processes that move atmospherically released mercury through the environment, and from site-specific characteristics such as the high sensitivity of wetlands and forested areas to mercury inputs. Local sources of mercury are also significant. Although mercury is not directly harmful at ambient levels, it is concentrated up to a millionfold and chemically modified in aquatic food chains, resulting in dangerous levels of methylmercury in some wildlife species. Fish consumption advisories responding to mercury contamination exist in all the states and provinces included in the study, and loons are adversely affected by mercury levels they experience.

The hotspots have implications for "cap and trade" approaches being implemented for regulation of emissions from coal-fired electric power stations, which, along with municipal waste incinerators, are major sources of mercury pollution. Cap and trade approaches seek to reduce the total release of mercury but could lead to static or increased emissions in some areas. Greater deposition of mercury near areas that are highly sensitive to the element or that are already affected by it could raise the risk to people and wildlife that consume fish. There is reason to believe, however, that lo
'"/>

Source:American Institute of Biological Sciences


Page: 1 2

Related biology news :

1. Study finds mercury prevalent in many western fish
2. Survey finds silver contamination in North Pacific waters
3. Albatross study shows regional differences in ocean contamination
4. Mercury contamination of fish warrants worldwide public warning
5. Asexual worm quickly adapts to soil contamination
6. Source of molecular triggers in cutaneous T cell lymphoma identified
7. Key molecule in plant photo-protection identified
8. Critical role in programmed cell death identified
9. Asthma gene clusters identified
10. Key mechanism in genetic inheritance during cell division identified
11. Two new retroviruses—transmitted from animals—identified
Post Your Comments:
(Date:9/2/2014)... When you accidentally touch a hot oven, you rapidly ... neural circuits involved in sensing and responding to such ... players. , Duke researchers have made a surprising discovery ... pain in worms, and have built a structural model ... Nature Communications , may help direct new strategies ...
(Date:9/1/2014)... the U.S. diet showed some modest improvement in the ... in the consumption of unhealthy trans fats, but the ... and the poor. , , An unhealthy diet is ... Eating a healthy diet is an important part of ... trends in diet quality is important because it can ...
(Date:9/1/2014)... the alteration of a single nucleotidethe basic building block of DNAcould ... disability. The study appears in The Journal of Cell ... by a defect in a gene on the X chromosome called ... 230 women and 1 in 360 men carry a so-called premutation, ... the FMR1 gene is slightly longer than normal. These ...
Breaking Biology News(10 mins):Surprising new role for calcium in sensing pain 2Surprising new role for calcium in sensing pain 3Quality of US diet improves, gap widens for quality between rich and poor 2Quality of US diet improves, gap widens for quality between rich and poor 3A nucleotide change could initiate fragile X syndrome 2
... University today announced a partnership to advance the use ... alternative energy source. The effort involves entrepreneurs John ... biodiesel in Afghanistan as a means to achieve multiple ... a new, sustainable economy in the country. ...
... understand the effects of climate change on the microbial ... and the tundra in Alaska, a University of Oklahoma ... of Energy grant. According to Jizhong Zhou, OU ... Institute for Environmental Genomics, the results of these studies ...
... demand for naturally raised beef continues to increase, researchers ... raised beef can be produced effectively for this niche ... to cover additional production and transportation costs. Naturally ... traditional systems take advantage of technologies the industry offers ...
Cached Biology News:Syracuse University partners with Arden-Fox to advance DOD's Net Zero Energy Initiative 2Syracuse University partners with Arden-Fox to advance DOD's Net Zero Energy Initiative 3Can naturally raised beef find its place in the industry? 2
(Date:8/31/2014)... N.J. , Aug. 31, 2014 Wockhardt ... Drug Discovery program in Anti-Infective research when two of ... coveted Qualified Infectious Disease Product (QIDP) status from U.S. ... to drugs which act against pathogens which have a ... are identified by Centre for Disease Control (a top ...
(Date:8/31/2014)... (PRWEB) August 31, 2014 This ... current state of the Epoxy Hardener industry ... basic overview of the industry, including definitions, applications ... Chinese domestic market analysis are provided with a ... of the market. A comparison between the international ...
(Date:8/29/2014)... Electronic circuits are based on electrons, but one of ... photonic circuits, i.e. circuits based on light (photons) instead ... to create a stream of single photons and control ... sorts of attempts to achieve this control, but now ... creating a steady stream of photons emitted one at ...
(Date:8/29/2014)... 29, 2014 Pittcon is pleased to ... colleague Koichiro Matsuda, Horiba Scientific, have organized a session ... 2014. JASIS , Asia’s largest analytical and scientific ... Makuhari Messe, Japan. , The four speakers in ... from Single Molecules to Single Cells” will present their ...
Breaking Biology Technology:U.S. FDA Grants QIDP Status for Wockhardt Anti-Infective Drug Discovery Program 2U.S. FDA Grants QIDP Status for Wockhardt Anti-Infective Drug Discovery Program 3Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3Breakthrough in light sources for new quantum technology 2Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2
... Wisconsin landed a federal research laboratory too long, many observers might ... Madison in 1910 when Gifford Pinchot, the first chief of the ... National Wildlife Health Center , established in Madison in 1975, has ... race against bird flu. , ,The latest addition is the ...
... NimbleGen Systems scientist Thomas Albert will lead a ... microarray technology in DNA sequence analysis, the company announced. ... be the lead investigator on a two-year, $415,000 grant ... million Cancer Genome Atlas pilot project. , ,His work ...
... the scandals of WorldCom, ENRON, and TYCO were heartless and greedy, ... on this video make them look like saints. Why? Because the ... make a living to support their families. , ,Think about all ... of years that have not been able to find a good ...
Cached Biology Technology:Federal bioenergy lab will give Wisconsin a chance to shine 2Federal bioenergy lab will give Wisconsin a chance to shine 3Federal bioenergy lab will give Wisconsin a chance to shine 4A disgusting video: U.S. companies sell out Americans 2A disgusting video: U.S. companies sell out Americans 3A disgusting video: U.S. companies sell out Americans 4
Borosilicate Glass. Certified for use with the Beacon 2000 Systems, 1,000 tubes/case...
... Engineered with new technology incorporating ... for unsurpassed flexibility, the new Varian ... advanced spectrometer available today., ,The Varian ... each transmitter and receiver channel, providing ...
Luminometers...
... Dr. P Set from different human ... More organs maybe available upon request. ... items from the whole set, and ... price. All Dr. P Set ...
Biology Products: