sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery

 

Sail-World.com : Antarctic grass thrives in a changing climate

Antarctic grass thrives in a changing climate

'Antarctic Hairgrass (Deschampsia antarctica)'    British Antarctic Survey ©

One plant species that grows in Antarctica appears to be thriving according to a team of UK scientists. Antarctic Hairgrass (Deschampsia antarctica) is more effective at absorbing organic nitrogen from the soil than the mosses that it lives alongside. This finding has implications for understanding how the nitrogen cycle works and is published this week in the first issue of the journal Nature Climate Change – part of the Nature series.

Samples were collected from the ice-free areas around British Antarctic Survey’s (BAS) Signy Research Station in the sub-Antarctic.

Lead author Dr Paul Hill from Bangor University said, 'We think of the Antarctic as a land of snow and ice. But, in summer on the Antarctic Peninsula, and the islands surrounding the frozen centre of the continent, the snow melts and many areas become green with mosses and two species of native flowering plant. As summer air temperatures in the maritime Antarctic have increased by about 1°C over the last 50 years, and Antarctic summers have become longer and warmer, one of these flowering plants, Antarctic Hairgrass (Deschampsia antarctica), has become increasingly widespread.'

Antarctic Hairgrass (Deschampsia antarctica) -  British Antarctic Survey?nid=82312 ©  
Author and principal investigator Professor Davey Jones from Bangor University said, 'Plants need nitrogen to grow successfully. In coastal Antarctica, much of the nitrogen is locked in organic matter in the soil, which has been slow to decompose in the cold conditions. This is now becoming more available as temperatures increase.'

Plants absorb nitrogen from organic matter that breaks down in stages, forming peptides, amino acids and then inorganic nitrogen. The team made the discovery that Antarctic Hairgrass uses its roots to access nitrogen directly as peptides, thus bypassing the final stage and using a shorter sequence. By injecting a trackable nitrogen substance into the soil under the Antarctic Hairgrass the team monitored it being absorbed by the plant.

BAS author Kevin Newsham said, 'These findings have ramifications far beyond Antarctica. If the roots of plants in temperate and tropical regions are consistently found to absorb organic nitrogen in this way, then it could have implications for the management of agriculture in the future.'

British Antarctic Survey website




by British Antarctic Survey

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=82312

12:09 PM Mon 11 Apr 2011 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.


News - USA and the World

































































International Moth Worlds: Rashley ahead as Aussies close in by Mark Jardine / YachtsandYachting.com,


ISAF Youth Match Racing Worlds - American unbeatable on day 1
RS Feva World Championships - All set at Yacht Club de Carnac
ISAF Rolex World Sailor of the Year Awards - Nominations now open
BIC Techno 293 Worlds - Steady winds on day 2 + Video
29er North American Open Championship - Qualifying series wraps up
Opening ceremony O'pen Bic World Cup, Travemunde Week, Germany
Six Metre Europeans - Wind fails to make an appearance on day 2
Edgartown Race Weekend - Let the sailing (and good times) begin
ISAF Youth Match Racing World Championship - Action commences July 23
International Moth Worlds - Mothballed on day 4 + Video
Spirits high as Team Alvimedica completes Transatlantic crossing
Gladwell's Line: A change of direction needed in the America's Cup *Feature
29er North American Championship - Day 1 in Kingston
Red Bull 49erFX: First look at the Olympic sailing venue at Rio
Fuerteventura Kiteboarding Grand Slam - Classic conditions on day 3
NYYC Race Week Part II images by Rolex/Daniel Forster
Drowning or electric shock? What you need to know to help save a life
BIC Techno 293 Worlds 2014 - Day 1
Six Metre European Championship - Blazing sunshine on opening day
National Sailing Hall of Fame to present Lifetime Achievement Award
International Moth Worlds: Greenhalgh and Rashley tied at the top   
PWA Pozo World Cup - Fantastic finale determines winners   
Six Metre Class British Open Championship - Llanoria and Valhalla win   
Anna Tunnicliffe set to compete at the CrossFit Games   
America's Cup: Oracle Team USA holds foiling camp at Wangi SC   
Volvo Ocean Race: Abu Dhabi OR completes double Atlantic crossing   
Volvo Ocean Race: Team SCA has a 'pull through day' off the Canaries   
No tiller sailing - how to steer using just the sails + Video   
International Moth Worlds: Three bullets in a row for Greenhalgh   
U.S. Junior Women’s Singlehanded Championship - Sophia Reineke wins   
BIC Techno 293 Worlds 2014 - Day 0 Opening   
Fuerteventura World Cup - Slalom action highlights day 2   
2014 Governor's Cup - Sam Gilmour of RFBYC victorious again   
Farr 40 West Coast Champ - Skipper Alberto Rossi leads Enfant Terrible   
Flying Dutchman World Championships - Magyars are the Masters   
Final day shakes up standings at Cape Panwa Hotel Phuket Raceweek   
2014 -15 Volvo Ocean Race: Team Alvimedica pushing towards Southampton   
NYYC Race Week - Saving the best for last   
VX One North American Championship - Chris Alexander commands   
2014 Cape Panwa Hotel Phuket Raceweek - Waiting game on Day 3   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL WAS US
LocalAds   DE  ES  FR  IT