Subscribe free to our newsletters via your
. 24/7 Space News .




Subscribe free to our newsletters via your




















ICE WORLD
Microbe study highlights Greenland ice sheet toxicity
by Staff Writers
Copenhagen, Denmark (SPX) Jul 12, 2017


The researchers took samples from multiple surface ice locations on the Greenland ice sheet, which they analysed using metagenomic data and binned genomes. Their results show that the microbial communities found in the ice sheets have the potential to resist and degrade contaminants.

The Greenland ice sheet is often seen as a pristine environment, but new research has revealed that may not be the case. A Danish-led study, published in the journal Environmental Research Letters, examined how microbes from the ice sheet have the potential to resist and degrade globally-emitted contaminants such as mercury, lead, PAH and PCB.

Dr Aviaja Hauptmann, from the University of Greenland, led the research. She said: "Globally emitted contaminants accumulate in the Arctic and are stored in the frozen environments of the cryosphere, essentially meaning they have become reservoirs of toxic chemicals.

"Our understanding of how biological processes interact with contamination in the Arctic is limited, which is why we hope our study represents a large step forward in the understanding and solving of this problem."

The researchers took samples from multiple surface ice locations on the Greenland ice sheet, which they analysed using metagenomic data and binned genomes. Their results show that the microbial communities found in the ice sheets have the potential to resist and degrade contaminants.

Dr Hauptmann said: "The microbial potential to degrade anthropogenic contaminants, including polychlorinated biphenyls (PCB), polycyclic aromatic hydrocarbons (PAHs), and the heavy metals mercury and lead, was found to be widespread, and not limited to regions close to human activities."

They also found that binned, or grouped, genomes showed close resemblance to microorganisms isolated from contaminated habitats. Since the genetic potential of contaminant resistance and degradation usually indicates the presence of the relevant contaminants, their results indicate that, from a microbiological perspective, the Greenland ice sheet is not a pristine environment.

Dr Hauptmann added: "More attention needs to be paid to the potential release of anthropogenic contaminants in this fast-changing environment. As the ice sheets melt due to climate change, they have the potential not only to increase sea level, but also pollute the environment around them through the release of other anthropogenic pollutants that have accumulated in them."

Research paper

ICE WORLD
US need for four polar icebreakers 'critical,' warns report
Washington (AFP) July 11, 2017
The rapid pace of global warming and ice melting at the poles have underscored the "critical" need for the United States to build four new polar icebreaker ships, US officials said Tuesday. The cost for each of the new ships is estimated to be $791 million, said the report from the National Academies of Sciences, Engineering, and Medicine. Congress called for the report amid concerns abo ... read more

Related Links
IOP Publishing
Beyond the Ice Age

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

ICE WORLD
In Gulf of Mexico, NASA Evaluates How Crew Will Exit Orion

Space Tourist From Asian Country to Travel to ISS in 2019

NASA Awards Mission Systems Operations Contract

ULA to launch Dream Chaser for cargo runs to ISS for Sierra Nevada

ICE WORLD
Elon Musk says successful maiden flight for Falcon Heavy unlikely

Russia to Supply Largest Ever Number of Space Rocket Engines to US This Year

ISRO Develops Ship-Based Antenna System to Track Satellite Launches

Aerojet Rocketdyne tests Advanced Electric Propulsion System

ICE WORLD
Panorama Above 'Perseverance Valley'

Sol 1756: Closing time

Hubble sees Martian moon orbiting the Red Planet

Curiosity Mars Rover Begins Study of Ridge Destination

ICE WORLD
China develops sea launches to boost space commerce

Chinese satellite Zhongxing-9A enters preset orbit

Chinese Space Program: From Setback, to Manned Flights, to the Moon

Chinese Rocket Fizzles Out, Puts Other Launches on Hold

ICE WORLD
LISA Pathfinder: bake, rattle and roll

ASTROSCALE Raises a Total of $25 Million in Series C Led by Private Companies

Korean Aerospace offices raided in anti-corruption probe

Iridium Poised to Make Global Maritime Distress and Safety System History

ICE WORLD
Cleanup Time: Russia Launches Satellite to Remove Space Junk from Orbit

Spacepath Communications Announces Innovative Frequency Converter Systems

Sorting complicated knots

Nature-inspired material uses liquid reinforcement

ICE WORLD
Eyes Wide Open for MASCARA Exoplanet Hunter

Ancient worm burrows offer insights into early 'ecosystem engineers'

Molecular Outflow Launched Beyond Disk Around Young Star

A New Search for Extrasolar Planets from the Arecibo Observatory

ICE WORLD
NASA's New Horizons Team Strikes Gold in Argentina

Juno spots Jupiter's Great Red Spot

New Horizons Video Soars over Pluto's Majestic Mountains and Icy Plains

New evidence in support of the Planet Nine hypothesis




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement