Navigation Links
Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows

Seabirds are the surprising culprits in delivering pollutants ?through their guano ?to seemingly pristine northern ecosystems, a new Canadian study shows.

The most common form of wildlife in the Arctic, seabirds are responsible for transporting most of the human-made contaminants to some coastal ecosystems, the researchers found. "The effect is to elevate concentrations of pollutants such as mercury and DDT to as much as 60 times that of areas not influenced by seabird populations," says team member John Smol, a biology professor at Queen's University and Canada Research Chair in Environmental Change.

The multidisciplinary study, led by Dr. Jules Blais, professor of environmental toxicology at the University of Ottawa, will be published July 15 in the journal Science.

Other team members are Marianne Douglas from the University of Toronto, D.McMahon and Linda Kimpe from the University of Ottawa, Bronwyn Keatley from Queen's University, and Mark Mallory from the Canadian Wildlife Service (Iqaluit).

Calling it a "boomerang" effect, Dr Blais says: "These contaminants had been washed into the ocean, where we generally assumed they were no longer affecting terrestrial ecosystems. Our study shows that sea birds, which feed in the ocean but then come back to land, are returning not only with food for their young but with contaminants as well. The contaminants accumulate in their bodies and are released on land."

The study took place at Cape Vera on northern Devon Island in the Canadian High Arctic, far from industrial and agricultural sources of pollutants. However, chemicals are emitted into the air and oceans from the populated parts of the globe, and are transported by air and ocean currents toward cold areas like the Arctic.

"Some chemicals will build up in the food webs that comprise northern traditional diets," says Ms Kimpe. "As a result, some of our northern Canadian populations are among the most mercury and PCB-expose
'"/>

Source:Queen's University


Page: 1 2

Related biology news :

1. A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide
2. Bird brains shrink from exposure to contaminants
3. A new portable biosensor detects traces of contaminants in food more quickly and cheaply
4. Anti-bacterial additive widespread in U.S. waterways
5. HIV-1 spread through six transmission lines in the UK
6. Reservoirs may accelerate the spread of invasive aquatic species, researchers say
7. Undesirable expatriates: Preventing the spread of invasive animals
8. Nanobacteria in clouds could spread disease, scientists claim
9. Rabies spread speeds up
10. New understanding of cell movement may yield ways to brake cancers spread
11. VCU Massey Cancer Center study shows enzyme linked to spread of breast cancer cells
Post Your Comments:
(Date:11/4/2014)... marketing directed at children on the interior and ... the majority of black, middle-income and rural communities ... Authored by Arizona State University researcher Punam Ohri-Vachaspati ... to examine the use of child-directed marketing on ... and its relationship to demographics. It adds to ...
(Date:11/3/2014)... Cancer Center study published in this month,s ... describes the activity of a recently discovered communication molecule ... It has been known to limit inflammation and the ... system: IL-37 inhibits the ability of the immune system ... mechanism that underlies IL-37,s effect on the immune system ...
(Date:11/2/2014)... fascinating to put a flashlight up to our palms ... University in St. Louis engineers are using a similar ... improve imaging of cancerous tissues and to develop potential ... Beare Distinguished Professor of Biomedical Engineering at the School ... time-reversal technology that allows researchers to better focus light ...
Breaking Biology News(10 mins):Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3PNAS: From HIV to cancer, IL-37 regulates immune system 2Improving imaging of cancerous tissues by reversing time 2
... team of researchers from the United States, Korea, and France ... strains of E. coli bacteria, one used to ... research or practical applications. The findings will help guide future ... understanding of classical research that is the foundation of our ...
... research is suggesting new ways to aid recovery after ... recovery rate and show how to make stem cell ... presented at Neuroscience 2009, the annual meeting of the ... emerging news on brain science and health. In ...
... of tons of fruits and vegetables in the United States ... to the U.S. Department of Agriculture? A Georgia State ... produce and flowers fresh for longer periods of time. ,Microbiologist ... larger than the width of a human hair to ...
Cached Biology News:Genomes of 2 popular research strains of E. coli sequenced 2Genomes of 2 popular research strains of E. coli sequenced 3Researchers find ways to encourage spinal cord regeneration after injury 2GSU professor develops new method to help keep fruit, vegetables and flowers fresh 2
(Date:11/15/2014)... Collaborative Consulting, a privately held, employee-based professional ... the Boston Globe’s “Top Places to Work 2014”. ... to receive the honor. , The Boston Globe’s ‘Tops ... their most valuable resource: the people who work for ... based on an array of criteria, including the caliber ...
(Date:11/15/2014)... The International Society for Cardiovascular ... society’s Governing Board has grown with the additions ... officer and Dr. Charles Simonton, divisional vice president, ... Mr. Rowe and Dr. Simonton are both medical ... , Dr. Nabil Dib, ISCTR President stated, “We ...
(Date:11/15/2014)... November 14, 2014 The "Operating ... Surgical, Performance), by Application (Perioperative, Preoperative, operating room ... (Web-Based, On-Premise) - Global Forecast to 2019.” defines ... an analysis and forecast of value by product, ... Along with this, the value and volumes of ...
(Date:11/15/2014)... 2014 The report “Laboratory ... End-User - Global Forecasts to 2019”, defines ... an analysis and forecast of value by ... Osmosis. Along with this, the value of ... regions are also discussed in the report. ...
Breaking Biology Technology:Collaborative Consulting Honored with Boston Globe Top Places to Work 2014 2International Society for Cardiovascular Translational Research Governing Board Adds Medical Industry Leaders 2Operating Room Management Market Worth $4,551.1 Million by 2019 - New Report by MarketsandMarkets 2Operating Room Management Market Worth $4,551.1 Million by 2019 - New Report by MarketsandMarkets 3Operating Room Management Market Worth $4,551.1 Million by 2019 - New Report by MarketsandMarkets 4Laboratory Filtration Market worth $2,532.6 Million by 2019 - New Report by MarketsandMarkets 2Laboratory Filtration Market worth $2,532.6 Million by 2019 - New Report by MarketsandMarkets 3Laboratory Filtration Market worth $2,532.6 Million by 2019 - New Report by MarketsandMarkets 4
... 21 Eli Lilly and,Company (NYSE: LLY ) ... the successful completion of the previously announced tender offer,by Lilly,s ... at a price of $70.00 per share in cash. ... 2008. , The depositary ...
... Intellect Neurosciences, Inc. ( OTC Bulletin Board ... therapeutic agents for the treatment and prevention of Alzheimer,s disease released ... Chairman and CEO. , , ... my privilege to serve as Chairman and CEO of Intellect Neurosciences ...
... Wyeth (NYSE: WYE ) today,announced that ... President,Technical Operations & Product Supply (TO&PS). Dr. ... operations and product supply for,Wyeth, including its Pharmaceutical, ... succeeds Charles Portwood, 58, who has been,appointed to ...
Cached Biology Technology:Lilly Completes Cash Tender Offer for ImClone Systems 2Lilly Completes Cash Tender Offer for ImClone Systems 3Intellect Neurosciences, Inc. Issues Letter to Shareholders From Its Chairman and CEO 2Intellect Neurosciences, Inc. Issues Letter to Shareholders From Its Chairman and CEO 3Intellect Neurosciences, Inc. Issues Letter to Shareholders From Its Chairman and CEO 4Intellect Neurosciences, Inc. Issues Letter to Shareholders From Its Chairman and CEO 5Wyeth Names Michael Kamarck President, Technical Operations & Product Supply 2
... a base medium for preparation of minimal and ... but does not contain amino acids. Both bulk ... pouch contains reagents to prepare 500 ml of ... of 10X YNB for S. cerevisiae media. Store ...
... The RapidCycler is the first instrument engineered ... and is used by thousands of research ... LightCycler Capillary tubes which are ideally suited ... thin walls and extremely high surface-area-to-volume ratio. ...
... Monoclonal Antibody is a mouse monoclonal ... the 26 kDa glutathione-S-transferase (GST) domain ... antibody is suitable for detecting fusion ... in E. coli , yeast, mammalian, ...
... produces output at 470 nm; includes interface cable ... or installed into rack or desktop boxes ... is an LED that produces either pulsed or ... region -- for fluorescence measurements. The source is ...
Biology Products: