sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery
Sail-World.com : Are Antarctic visitors introducing invasive alien plant species?
Are Antarctic visitors introducing invasive alien plant species?

'Hairy bitter cress found at King Edward Point.'    British Antarctic Survey ©

Seeds attached to visitors’ (including sailors') clothing and bags may introduce invasive alien plant species that could damage the Antarctic continent’s ecosystems, according to information published in the journal Proceedings of the National Academy of Science (PNAS) this week.

An international team of scientists, including environmental scientist Dr. Kevin A. Hughes from the British Antarctic Survey (BAS), sampled, identified and mapped the sources and destinations of more than 2,600 plant propagules—structures like seeds or plant fragments that allow plant to establish—hitching a ride to Antarctica on scientists and tourists during 2007-2008.

The researchers assessed the likelihood that these alien species would survive and establish in Antarctica, both now and by the year 2100, using current climate data and projections based on emission scenarios from the Intergovernmental Panel on Climate Change (IPCC).

Invasive alien species are among the primary causes of biodiversity change worldwide. Lead author Prof. Steven Chown, Director of the DST-NRF Centre of Excellence for Invasion Biology based at Stellenbosch University in South Africa said, 'We wanted to assess the risks for Antarctica as a whole, by finding out which seeds are being brought in, where they originate from and where they are most likely to establish.'

Although the authors found that the average visitor carries less than ten seeds to the Antarctic, several alien species have already become established on the Western Antarctic Peninsula, in a region where future climate-related changes along the coast are likely to aid the plants’ survival. Furthermore, because travellers often visit other cold places prior to arriving in Antarctica, as many as half of the alien propagules that reach the continent are from cold-adapted species that could withstand conditions at some Antarctic destinations.

The findings, along with others in the study, represent a comprehensive risk assessment of invasive species in Antarctica and a blueprint to mitigate future threats. The study highlights the risks posed by invasive species, even in remote areas, and how these risks may grow with climate change.

Dr. Kevin A. Hughes, at BAS says, 'Crucially, the data in this study will inform management decisions aimed at conserving Antarctica’s biodiversity from invasive alien species. In the future, increased numbers of tourists and scientists are expected to visit the continent, so as a community we need to implement effective practices to reduce the number of alien species getting there.'

The study was a consortium effort of the International Polar Year (IPY 2007–9) ‘Aliens in Antarctica’ project. In practical terms, about 2% of the 33,000 tourists and 7,000 scientific team members who visited Antarctica in 2007 during the first season of IPY were sampled and asked questions about their previous travel. The process included the fine-combing and vacuuming of camera bags, outer clothing and other baggage.


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=95016

10:06 PM Sun 18 Mar 2012GMT


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 - Mothballed on day 4 + Video by Mark Jardine / YachtsandYachting.com,




Gladwell's Line: A change of direction needed in the America's Cup *Feature by Richard Gladwell/Sail-World.com/nz,
























Anna Tunnicliffe set to compete at the CrossFit Games by Anna Tunnicliffe, Pittsburgh, PA
























Final day shakes up standings at Cape Panwa Hotel Phuket Raceweek by Cape Panwa Hotel Phuket Race Week 2014,








2014 Cape Panwa Hotel Phuket Raceweek - Waiting game on Day 3
International Moth Worlds: Thunderstorms delay racing on Day 1
Fuerteventura World Cup - Impressive tricks on day 1
2014 Governor's Cup - Two former winners in the finals
America's Cup: Iain Murray explains reasons for Australian withdrawal *Feature
Wilson and Roble remain number one match racers in U.S.
2014 ISAF Youth Match Racing World Championship - Set to start
PWA Pozo World Cup - Moreno twins dominate home spot
ISAF Youth Worlds - Record breaking regatta in Tavira + Video
Melges 32 European Championship - Robertissima remains out front
Farr 40 West Coast Championship - Italians take one-point lead
Melges 32 European Championship - Day 3 images by Carlo Borlenghi
New York Yacht Club Race Week - Marstrom 32 fleet off to anxious start
Melges 32 European Championship - Day 3 images by Max Ranchi
CYC Race to Mackinac - Cruising fleet sets sail in 106th edition
Team Alvimedica getting a touchup
PWA Pozo World Cup - Plenty of drama on day 5
ISAF Youth Sailing World Championship - Day 5 Videos
NYYC Race Week - High performance classes put on shoreside show
2014 Pacific Cup - 'Invisible Hand' the first boat to finish
Clipper Round the World Yacht Race - B.C.'s Eric Holden skippers wins   
America's Cup: Updates on Team Australia withdraw   
J/70 North American titles - Brian Keane moves to top of leaderboard   
2016-2017 America's Cup - Team Australia withdraws   
VX One North American Championship - Chris Alexander takes charge   
America's Cup: Team NZ disappointed, but on track after Australians go   
America's Cup: Hamilton Island decides not to proceed with Challenge.   
America's Cup: Challenger of Record withdraws from Regatta   
WWA Wakeboard National Championships head to Waco   
Farr 40 West Coast Championship - Day 2   
RP52 Scarlet Runner sails in San Francisco   
2014 Governor's Cup - Nevin Snow and team on form   
ISAF Youth Worlds - Americans claim silver medals in Tavira   
2014 Cape Panwa Hotel Phuket Raceweek - Day 1   
Melges 32 European Championship - Day 2 images by Carlo Borlenghi   
Windsurfing and Kiteboarding World Cup to take place on Fuerteventura   
ISAF Youth Worlds - Medals decided in thrilling Tavira conclusion   
7th Annual Swim for Cystic Fibrosis to take place July 21st   
Melges 32 European Championship - Day 2 images by Max Ranchi   
Cape Panwa Hotel Phuket Raceweek, Day 2 - It just keeps getting better   


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