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

Big Boat Series - It's not the size, it's the length by Erik Simonson, Pressure-Drop.US,




















470 Men and Women Worlds - Champs take over leaderboard by 470 International Association Class,






































ISAF Sailing World Championships - Watch medal races live here by Dan Ibsen, Sail-World Europe & UK editor,








470 Men and Women Worlds - Vadlau and Ogar into pole position
2014 Chicago Match Cup - Defending champion on top
ISAF Sailing Worlds, Santander - Strong competition for RS:X fleets
ISAF Sailing Worlds, Santander - Big breeze on day 6 + Video
ISAF Sailing Worlds, Santander - Buckingham into Laser Medal Race
U.S. Multihull Championship - Hobie Alter Trophy to be decided
ISAF Sailing Worlds - The kind of form most sailors only dream about
Royal Cup Marina Ibiza - Quantum Racing ahead of target
ISAF Worlds Santander - 19 Rio 2016 Laser Radial spots awarded
Santander 2014 ISAF Worlds - 21 broadcasters to take live coverage
Rolex Swan Cup - Looking forward to the next 30 years
America’s Cup: The Future is foiling – AC45s to be modified
Volvo Ocean Race: Win a stopover trip by designing an ECsix T-Shirt
Red Bull 49erFX: On the eve of the Worlds in Santander
America's Cup: Ben Ainslie Racing launches partnership with Yamaha
2014 Chicago Match Cup - Starts tomorrow
Rio 2016 Daylight the issue for Olympic sailing regatta
ISAF Sailing World Championships - USA 470's and Lasers battle at top
ISAF Sailing World Championships - Santander - Day 5 video highlights
ISAF Sailing World Championships - Santander images by Jesús Renedo
PWA Cold Hawaii World Cup - No action on day 2   
470 Men and Women Worlds - Game on for Olympic Qualification   
ISAF Sailing World Championships: Finns off to slow start in Santander   
ISAF Sailing World Championships - Seesaw Day 5 in Santander + Video   
ISAF Sailing World Championships - 470 sailors shine in Santander   
Royal Cup Marina Ibiza - Kiwi Ray Davies returns to TP52 fleet   
Starboard Hatteras Wave Jam - No windsurfing action on day 1   
A complete recap of the most successful Melges 20 World Championship   
Rolex Big Boat Series - Prizegiving images by Chuck Lantz   
ISAF Santander - Upwards path for Austrian women's 470 crew + video   
18ft skiffs: Carnage compilation from the glory days of the Grand Prix   
ISAF Worlds: Video from the British Sailing Team   
Bart's Bash expected to set new records this weekend   
PWA Cold Hawaii World Cup - Marcilio Browne wins Super Session   
470 Men and Women World Championships - Racing abandoned on day 2   
ISAF Sailing World Championships - Day 4 images from Santander   
ISAF Sailing Worlds, Santander: Emerging Nations Program sailors shine   
ISAF Sailing Worlds, Santander - Teasing winds play havoc on day 4   
ISAF Sailing World Championships: Hot conditions in Santander on day 4   
Santander ISAF Sailing World Championships joins Bart’s Bash   


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 NEW US
LocalAds   DE  ES  FR  IT