Scientists using the famous Alvin submersible were studying lifeforms living around hydrothermal vents off the NW coast of the U.S. They gathered various specimens with the sampling tools at a depth of 2.7km. The support ship then carried Alvin to the Juan De Fuca Ridge 600km to the north to get more specimens. But when they left the 1st location, there were some creatures - limpets (Lepetodrilus gordensis) - hiding on the sub, possibly in the hose's suction sampler. When they sent Alvin down in the 2nd location, they inadvertently introduced the live stowaways to a new habitat.Such invasive species can wreak havoc on marine ecosystems by transferring competitors or disease. "Hydrothermal vents are the most extreme, specialised habitats you can get - they spew out acidic, metal-rich fluids. And we could be messing with them without even knowing about it," said participating researcher Janet Voight.
__________
Previous posts mentioning invasive species:
No comments:
Post a Comment
You may add your comments here.