Navigation Links
Eggs show arctic mercury cycling may be linked to ice cover
Date:1/20/2011

An international research team working with National Institute of Standards and Technology (NIST) scientists at the Hollings Marine Laboratory (HML) in Charleston, S.C., has suggested for the first time that mercury cycling in the flora and fauna of the Arctic may be linked to the amount of ice cover present. Their study* is the latest work reported from the Seabird Tissue Archival and Monitoring Project (STAMP), a multiyear joint effort of NIST, the U.S. Fish and Wildlife Service (USFWS), the U.S. Geological Survey (USGS) and the Bureau of Indian Affairs to track trends in pollutants in northern marine environments using seabird eggs.

Overall mercury levels in northern environments have been documented for some 20 years. However, the new study marks the first time that the tracking has been done using a sophisticated analysis of mercury isotopes (forms of the same atom that have different atomic masses) and an effect called "mass-independent fractionation" or MIF.

MIF is a relatively unusual change in the relative abundance of different isotopes of the same element (fractionation) that can be the result of photochemical reactions. Determining the relative amount of the MIF isotopes of mercury is considered valuable because the data can be used to trace the reactions in nature that led to the fractionationand in turn, provide a better understanding of how the reactions work and how they impact the cycling of mercury in the environment.

Ultraviolet radiation from sunlight can fractionate mercury on the ocean surface via a process known as photodegradation. Laboratory research has shown that this reaction preferentially selects for some isotopes of mercury to move into the atmosphere while others become more abundant in the ocean. Plankton absorb the water-borne mercury, fish eat the plankton, and finally, sea birds eat the fish and pass the ingested mercury into their eggs. Therefore, the eggs are key tissues for mercury monitoring
'/>"/>

Contact: Michael E. Newman
michael.newman@nist.gov
301-975-3025
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Researchers brave icy waters to study Arctic food web
2. VIMS team returns to Antarctic Peninsula
3. New study about Arctic sea-ice, greenhouse gases and polar bear habitat
4. Ancient forest emerges mummified from the Arctic
5. High-tech software, umanned planes allow scientists to keep tabs on Arctic seals
6. NSFs Nathaniel B. Palmer sails with Swedens Oden to study Antarctic Peninsula ecosystem
7. As Arctic temperatures rise, tundra fires increase, researchers find
8. International think tank to examine Arctic issues
9. Arctic soil study turns up surprising results
10. FDA Clears Medivances Arctic Sun 5000 for Fastest, Easiest Therapeutic Temperature Management
11. Marine animals suggest evidence for a trans-Antarctic seaway
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Eggs show arctic mercury cycling may be linked to ice cover
(Date:9/2/2014)... September 2, 2014 A study published in ... of the American Academy of Child and Adolescent ... with a psychiatric diagnosis had an increased risk ... antipsychotics. , Using data from the nationwide Danish ... Ren Ernst Nielsen, Psychiatry, Aalborg University Hospital, Denmark, ...
(Date:9/2/2014)... of lithographic limestone is well known as a ... that area (for example, Archaeopteryx). Now, for the ... the French equivalent of these outcrops - discoveries ... known water treader. , Despite the abundance of ... have been obtained from the Late Kimmeridgian equivalents ...
(Date:9/1/2014)... in the U.S. has improved steadily in recent yearsspurred ... dietary quality remains poor and disparities continue to widen ... study from Harvard School of Public Health (HSPH). , ... that the extensive efforts by many groups and individuals ... but it also indicates that these efforts need to ...
Breaking Biology News(10 mins):Risk of diabetes in children and adolescents exposed to antipsychotics 2Exceptionally well preserved insect fossils from the Rhône Valley 2Quality of US diet shows modest improvement, but overall remains poor 2Quality of US diet shows modest improvement, but overall remains poor 3
... in German . It,s a quick process, ... seconds, a laser beam has welded the casing and speedometer cover ... is a perfect weld seam scarcely visible to the naked eye. ... welding. What,s more: the resulting heat is confined to a minimal ...
... Columbia have been able to pinpoint more of the ... valuable compounds to the roasting process. Lead author ... the prevailing antioxidants present in dark roasted coffee brew ... high temperatures. Their findings will appear in ...
... of Zaragoza (UNIZAR) has studied precipitation trends in Spain,s ... The results show that precipitation has declined overall between ... of the rainy season. The rains are heavier in ... ,Since 1946, the average precipitation falling on Spanish hydrological ...
Cached Biology News:Laser welding in the right light 2Roasting coffee beans a dark brown produces valued antioxidants: UBC food scientists 2Rain in Spain is on the decline 2
(Date:9/1/2014)... Albany, NewYork (PRWEB) September 01, 2014 ... Pharma, Biotech and Diagnostics report provides comprehensive understanding ... and agreements entered into by the worlds leading ... detailed understand and analysis of how and why ... flexibility of a prospective partner’s negotiated deals terms ...
(Date:8/31/2014)... 31, 2014 2014 Market ... a professional and in-depth research report on ... Polyacrylamide information, including Polyacrylamide definition, classification, application, ... industry overview. This research covers the international ... as global industry analysis covering macroeconomic environment ...
(Date:8/29/2014)... SAN DIEGO, Aug. 29, 2014  Pfenex Inc. ... in the development of high-value and difficult to ... business update and reported financial results for the ... "With the successful completion of our initial public ... advance our biosimilar product candidates, derived from our ...
(Date:8/29/2014)... According to a new market report published by Transparency ... valued at USD 3,754.6 million in 2012 and is estimated ... CAGR of 5.9% from 2013 to 2019. , Nearly half ... by bone and joint disorders, and this number is expected ... will continue to increase the demand for orthobiologics. Other factors ...
Breaking Biology Technology:Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 2Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 3Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 4International Polyacrylamide Industry & Copper Iodide Market Data Analysis Now Available at DeepResearchReports.com 2International Polyacrylamide Industry & Copper Iodide Market Data Analysis Now Available at DeepResearchReports.com 3Pfenex Reports Second Quarter 2014 Results and Provides Business Update 2Pfenex Reports Second Quarter 2014 Results and Provides Business Update 3Pfenex Reports Second Quarter 2014 Results and Provides Business Update 4Pfenex Reports Second Quarter 2014 Results and Provides Business Update 5Pfenex Reports Second Quarter 2014 Results and Provides Business Update 6Pfenex Reports Second Quarter 2014 Results and Provides Business Update 7Pfenex Reports Second Quarter 2014 Results and Provides Business Update 8Global Orthobiologics Market to Reach $5,519.9 Million by 2019: Transparency Market Research 2Global Orthobiologics Market to Reach $5,519.9 Million by 2019: Transparency Market Research 3
... Researcher Provides Extensive Experience In Molecular DiagnosticsSALT LAKE ... company revolutionizing spine care through the development of ... Macina, Ph.D., has joined the executive management team ... and Development. Dr. Macina will report directly to ...
... Feb. 24 Innovative Biosensors, Inc., and ProGenTech ... diagnostics, today announced an agreement to jointly develop ... incorporate Innovative Biosensor,s proprietary Cellular Analysis and Notification ... cell-based approach for quickly detecting various pathogens, into ...
... the gene that ultimately controls the production of tooth ... to the repair of damaged enamel, a new concept ... of replacement teeth. , The gene, called Ctip2, is ... several functions - in immune response, and the development ...
Cached Biology Technology:Axial Biotech Appoints Dr. Roberto Macina to Vice President of Research and Development 2Innovative Biosensors and ProGenTech Partner to Develop a Rapid Diagnostics System 2Innovative Biosensors and ProGenTech Partner to Develop a Rapid Diagnostics System 3Genetic discovery could lead to advances in dental treatment 2
... designed to rapidly and reliably amplify unknown ... Technology. APAgene provides hassle-free, ready-to use components, ... ingredients are provided in each kit. The ... gap filling, localized cloning of genomic DNA, ...
No description available in Ensembl. Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
Rabbit polyclonal to Yaf9 ( Abpromise for all tested applications)....
... is designed to deparaffinize and perform Heat ... paraffin-embedded tissue sections mounted on glass microscope ... paraffin at the high temperature used in ... of the paraffin by detergent. Formaldehyde fixation ...
Biology Products: