Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Earth Science News .




ICE WORLD
Invasive species said threat to Antarctica
by Staff Writers
Birmingham, England (UPI) Dec 18, 2012


disclaimer: image is for illustration purposes only

An invasive species, a tiny insect, has the potential to drastically alter Antarctic ecosystems isolated for millions of years, British researchers say.

Scientists at the British Antarctic Survey say the midge, well-suited to thrive in the extreme conditions, has released large volumes of nutrients into the soil and has altered the manner in which native species had lived and evolved.

The non-biting insect Eretmoptera murphyi has, in effect, removed certain controls on the development of the native community, they said.

"In terms of function, their job is litter turnover -- they help things decay in the soil -- and the population density of this thing in the area where it has been introduced is responsible for more litter turnover than the community that was already there," researcher Peter Convey said.

He was presenting the research at the annual meeting of the British Ecological Society in Birmingham, the BBC reported Tuesday.

"So basically it is bringing a function into an ecosystem that is not very active already," Convey said. "In principle, it can be a fundamental change in the way that ecosystem works."

"If you widen [this issue] beyond this particular species then probably the biggest risk is that we could drive locally or generally extinct some of the unique species that already exist in part of the Antarctic," he told the BBC.

.


Related Links
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
Australia plans drill of ancient Antarctic ice core
Sydney (AFP) Dec 15, 2012
Australia Saturday announced plans to drill a 2,000 year-old ice core in the heart of Antarctica in a bid to retrieve a frozen record of how the planet has evolved and what might be in store. The Aurora Basin North project involves scientists from Australia, France, Denmark and the United States who hope it will also advance the search for the scientific "holy grail" of the million-year-old ... read more


ICE WORLD
China opens disaster research laboratory

Doomsday cult arrests surpass 400 in China

Signs of evolving US gun debate after school tragedy

China cracks down on doomsday rumours: state media

ICE WORLD
Samsung is top 2012 phone brand, ousting Nokia

Instagram yields to user outrage over policy change

Rice uses light to remotely trigger biochemical reactions

Apple losses bid for US ban on Samsung smartphones

ICE WORLD
Disputed fish quota cuts lead to tough EU talks

Russian center to study 'killer' waves

Report warns of Colorado River supply

Will climate change cause water conflict?

ICE WORLD
Top Officials Meet at ONR as Arctic Changes Quicken

Invasive species said threat to Antarctica

Australia plans drill of ancient Antarctic ice core

More ice loss through snowfall on Antarctica

ICE WORLD
Building better barley

Argentine corn exports blocked by China

Fertile soil doesn't fall from the sky

Brazil fears mad cow case will force cut in beef prices

ICE WORLD
Ecuador volcano spews lava, ash

Trail of destruction after Cyclone Evan hits Fiji

Great Nepalese quake of 1255 points to Himalayan risk

Ecuador declares volcano alert

ICE WORLD
Kenyans brace for another violent election

French push Algeria to join Mali incursion

Troops patrol Nigeria city after death of governor

DR Congo leader says defence top priority after rebel takeover

ICE WORLD
Study: Early humans had a taste for grass

Tracing humanity's African ancestry may mean rewriting 'out of Africa' dates

Technology has spawned 'new brain'

What howler monkeys can tell us about the role of interbreeding in human evolution




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