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

























470 Men and Women Worlds - Game on for Olympic Qualification by 470 International Association Class,












A complete recap of the most successful Melges 20 World Championship by International Audi Melges 20 Class Association,




ISAF Santander - Upwards path for Austrian women's 470 crew + video by Luissa Smith, International 470 Class Association,


























Rolex Big Boat Series 2014 - Ready for another 50 years
2014 Rolex Big Boat Series - Farr 40 Day 4
2014 Rolex Swan Cup - Eleventh-hour victories
Extreme Sailing Series - Kiwis clinch Act win in Istanbul + Video
2014 Rolex Big Boat Series - Two long races today for the J70 fleet
2014 Rolex Big Boat Series - Impressive to sail out of the Golden Gate
Extreme Sailing Series - Istanbul delivers four days of great racing
Extreme Sailing Series: Emirates Team NZ bounces back for series win
Santander 2014 ISAF Worlds - Light winds and current test six classes
ISAF Sailing World Championships - Solid Day 3 for US Sailing Team
ISAF Sailing World Championships - Day 3 images by Jesus Renedo
Marseille One Design 2014 - GC32 Armin Strom blitzes final day
Volvo Ocean Race 2014-15 - Una Etapa 0 complicada para todos
Santander 49ers: Olympic Gold Medallist says two into 90 does not go!! *Feature
GBR aiming for first ever Nacra 17 Games berth at Santander Worlds
Volvo Ocean Race: Man and sail overboard as Leg 0 serves up drama
ISAF Sailing World Championships Santander 2014 – Images by Dan Ibsen
Santander Worlds – already a spectator success
ISAF Sailing World Championships Santander 2014 - Day 3 morning report
Volvo Ocean Race 2014-15 - Tales from the extreme
Volvo Ocean Race: Latest starter wins opening race   
2014 J/70 World Championship - Healy, Abdullah, Becker and Borges win   
2014 Rolex Big Boat Series - Full-blown, once again   
ISAF Worlds - Americans jump up Laser and Laser Radial leaderboard   
2014 Rolex Big Boat Series - Farr 40 Day 3   
America's Cup: Luna Rossa sailing with two foiling AC45's + Video   
Extreme Sailing: Emirates Team NZ retain second overall   
ISAF Sailing Worlds, Santander - Rio Olympic Laser spots snapped up   
Rolex Swan Cup - All set for final showdown   
Upper Midwest sailors need help to take it to the next level   
ISAF Sailing World Championships - RS:X action begins in Santander   
ISAF Sailing Worlds, Santander - Americans rise in Laser and Radial   
Extreme Sailing Series - A remarkable penultimate day’s racing + Video   
Marseille One Design - GC32 GDF Suez unstoppable in the light   
Rolex Swan Cup - Day 3 images by Carlo Borlenghi   
ISAF Sailing World Championships - Images of the leaders in Santander   
Rolex Big Boat Series - Good day for Double Trouble   
Rolex Big Boat Series - Day 2 images by Erik Simonson   
Royal Cup Marina Ibiza - TP52 fleet ready for tricky race tracks   
Rolex Big Boat Series - Plenty maintains lead   


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