Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




ICE WORLD
University of Alberta scientists get dirty at the Robson Glacier
by Staff Writers
Ottawa, Canada (SPX) Jul 26, 2013


Hahn and Quideau measured soil microbial community composition and functional diversity, and determined the influence of Engelmann spruce (Picea engelmannii Parry) and yellow mountain avens (Dryas drummondii Rich.) on soil microbial community succession along the glacier chronosequence.

Glacier retreat areas provide an excellent window into the evolution of microbial communities, an ideal opportunity for scientists to study how quickly soil biological functions become established and how ecosystems begin to form. Soils are not static in the landscape, but instead evolve with time under the influence of multiple environmental factors - understanding how these factors interact can lead to advancements in the science and management of soils.

Aria Hahn and Dr. Sylvie Quideau, researchers at the University of Alberta, conducted their research in Mount Robson Provincial Park along the Robson Glacier in British Columbia. Standing 3954 m tall, Mount Robson is the highest point in the Canadian Rocky Mountains and supports a large ice- and snowfield. Their study was published in the Canadian Journal of Soil Science.

"We are excited to present some of the first data documenting microbial community diversity, biomass and function along a 100-year-old soil chronosequence in a Canadian glacier retreat area," says Dr. Quideau. "These beautiful natural wonders provide an excellent opportunity to study the development of soils and the microbial communities that live within them."

Hahn and Quideau measured soil microbial community composition and functional diversity, and determined the influence of Engelmann spruce (Picea engelmannii Parry) and yellow mountain avens (Dryas drummondii Rich.) on soil microbial community succession along the glacier chronosequence. They found that while soil microbial composition remained relatively stable, total biomass and fungal activity of the community responded to changes in the soil environment and increased as the soil aged.

Correlations between microbial respiration of carbon substrates with the soil nitrogen content indicated that the soil microbial community was influencing changes in the soil environment. Yellow mountain avens, a plant known to support nitrogen fixation, increased soil microbial biomass, although this effect took 40 years after deglaciation to emerge.

"Soils and their inhabiting microbes differ greatly among glacier sites around the Earth. We believe that by understanding the natural phenomena in glaciers here at home, we can not only advance the management of Canadian ecosystems but also contribute valuable knowledge to the global community."

.


Related Links
AgriculturalInstitute of Canada
Beyond the Ice Age






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

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




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





ICE WORLD
New iceberg theory points to areas at risk of rapid disintegration
Ann Arbor MI (SPX) Jul 23, 2013
In events that could exacerbate sea level rise over the coming decades, stretches of ice on the coasts of Antarctica and Greenland are at risk of rapidly cracking apart and falling into the ocean, according to new iceberg calving simulations from the University of Michigan. "If this starts to happen and we're right, we might be closer to the higher end of sea level rise estimates for the n ... read more


ICE WORLD
Sandy's offspring: baby boom nine months after storm

Malaysia says will get tough on illegal immigrants

More steam in Fukushima reactor building: TEPCO

Fukushima steam still baffling: TEPCO

ICE WORLD
US Lawmaker Seeks to Partner with Russia to Clean Up Space

Superfluid turbulence through the lens of black holes

Perfecting digital imaging

Ancient technology for metal coatings 2,000 years ago can't be matched even today

ICE WORLD
NOAA-supported scientists find large Gulf dead zone, but smaller than predicted

Pollution plagues China's mega water diversion project

Managing waters shared across national boundaries

A life spent in the wettest place on earth

ICE WORLD
Declining sea ice strands baby harp seals

University of Alberta scientists get dirty at the Robson Glacier

Ancient ice melt unearthed in Antarctic mud

Coastal Antarctic permafrost melting faster than expected

ICE WORLD
Research team collaborate to save the bacon

France promises Malaysia no palm oil 'discrimination'

Common agricultural chemicals shown to impair honey bees' health

Full genome map of oil palm indicates a way to raise yields and protect rainforest

ICE WORLD
Devastating long-distance impact of earthquakes

Earthquakes trigger undersea methane reservoirs: study

New Notre Dame study proposes changes in New Orleans area levee systems

Tropical Storm Dorian forms in Atlantic

ICE WORLD
UN cuts back I. Coast force

Nigeria Islamists kill 20 civilians in north: military

Tunisia on brink of internal conflict after assassinations

Covert U.S. flights could signal new Somalia action

ICE WORLD
World's first IVF baby born after preimplantation genome sequencing is now 11 months old

First human tests of new biosensor that warns when athletes are about to 'hit the wall'

Extinct Ancient Ape Did Not Walk Like a Human

Japanese women retake top spot for life expectancy




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal 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. 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