Great Lakes invasive species studied

May 23, 2006

The longstanding problem of various invasive species entering the Great Lakes via the St. Lawrence Seaway is now gaining attention from scientists.

The National Academy of Sciences convened a committee of transportation, economic and environmental experts Tuesday to explore ways to halt the flow of unwanted creatures into the world's largest freshwater system, while not interfering with international shipping in the area, the Milwaukee Journal-Sentinel reported.

Most invaders enter the lakes in contaminated ballast water used to stabilize ships. Such ballast is often taken on at one port and dumped at another, the Journal-Sentinel said.

At least 180 invasive species have, so far, entered the Great Lakes and a new one is discovered about every six and a half months, the newspaper said, noting the world's ocean shipping industry is trying to develop technology that will decontaminate ships' ballast water tanks.

Conservationists are reportedly beginning to question the value of overseas shipping to the Great Lakes, given the ecological problems it is causing.

Copyright 2006 by United Press International

Explore further: Chinese, Indian airlines face EU pollution fines

add to favorites email to friend print save as pdf

Related Stories

Using sound to protect aquatic life

Apr 22, 2013

The large cargo ships that steam daily into Newark Bay unload more than the colorful containers stacked on deck - from their holds they also can release millions of gallons of water teeming with tiny sea creatures from faraway ...

New requirements for ballast water dumped by ships

Mar 29, 2013

(AP)—The Environmental Protection Agency has issued new requirements for cleansing ballast water dumped from ships, which scientists believe has brought invasive species to U.S. waters that damage ecosystems and cost the ...

Recommended for you

Chinese, Indian airlines face EU pollution fines

May 18, 2013

Eight Chinese and two Indian airlines face fines of up to several million euros for not paying for their greenhouse gas emissions during flights within the bloc, the European Commission said on Friday.

Fracking risks to ground water assessed

May 17, 2013

(Phys.org) —Extraction of "unconventional" gas from sedimentary rocks such as shale could provide a clean energy source and help some regions to become energy independent, but concerns have been raised ...

Caribbean talks conservation on Branson's island

May 17, 2013

(AP)—Surrounded by a turquoise sea and a menagerie of exotic animals on a billionaire's private island, political and business leaders gathered Friday to back an initiative aimed at expanding protection ...

User comments : 0

More news stories

Galaxy's Ring of Fire

Johnny Cash may have preferred this galaxy's burning ring of fire to the one he sang about falling into in his popular song. The "starburst ring" seen at center in red and yellow hues is not the product of ...

Earth's center is out of sync

(Phys.org) —We all know that the Earth rotates beneath our feet, but new research from ANU has revealed that the center of the Earth is out of sync with the rest of the planet, frequently speeding up and ...