Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.

 

Ray Kurzweil

 

Antarctica Braces for Influx of Invasive Species

RATE THIS! +0
Posted in Science on 9th Jan, 2013 06:44 PM by AlexMuller

Antarctica and the Southern Ocean may seem very far away from civilization, but they are at great risk of losing their unique qualities due to human activities. Warmer temperatures and human visitation are increasing the likelihood that invasive species can take up residence in the Antarctic, and potentially cause major changes. Two studies have found evidence of invasions both on land (from a midge) and at sea (from crabs). The remoteness of the Antarctic can no longer protect it from potentially destructive invaders. Forget about The Thing – the scariest alien invaders in the Antarctic come from our own planet.

 

Concern about a possible crab invasion of Antarctica began in 2007, when ecologist Sven Thatje saw a few king crabs on the outer continental slope of the Antarctic Peninsula. Their presence raised immediate alarms. Unlike more famous invaders like lionfish or brown tree snakes, crabs have yet to gain notoriety as ecosystem destroyers. But in the Antarctic, cold water has long kept out crustaceans like crabs and lobsters, which cannot survive at temperatures below 1°C (just under 34°F). The result is that many seafloor creatures in the Southern Ocean today have not evolved the same defenses against crushing claws as species in other regions. So the discovery of Neolithodes yaldwyni, a species of king crab, by a submersible surveying shallower areas closer to the Antarctic Peninsula (one of the fastest warming areas in the world) was unwelcome news.

 

This indicates that the crabs are more firmly established, and have become truly invasive. The researchers who discovered the crabs estimate that there are 1.5 million crabs in the Palmer Deep. As warming of ocean water increases, the range of these crabs will expand further.



Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Science on 2017-09-23 08:31:24
    Fly me to the Moon: For some, lunar village takes shape..read more
    Posted in Software on 2017-09-23 08:22:48
    One year later, Microsoft AI and Research grows to 8k.....read more
    Posted in Science on 2017-09-23 08:14:46
    Big Antarctic iceberg edges out to sea..read more
    Posted in Business on 2017-09-22 18:42:50
    To Achieve 100% Renewable Energy, We Need Way Better.....read more
    Posted in Medicine on 2017-09-22 18:31:20
    How the poliovirus can be used to battle lethal cancers..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Scientists probe Neptune's depths to reveal secrets of icy.....read more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin cancer.....read more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not work..read more
    Posted by AlexMuller
    Artificial neural networks decode brain activity during.....read more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the nearest.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me