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News stories tagged with "invasives"

Pseudomonas fluorescens kills invasive mussels
Pseudomonas fluorescens kills invasive mussels

A silver bullet for zebra mussels?

New York researchers say they've found something that will kill invasive zebra and quagga mussels. The mussels got into the U.S. in the ballast of foreign ships. Since then they've spread throughout the country. Rebecca Williams reports.  Go to full article

Zebra mussels 20 years later

The invasive zebra mussel has disrupted food chains and caused billions of dollars in damage across the country. This year marks the twentieth anniversary of the discovery of zebra mussels. Mark Brush reports.  Go to full article
Didymo or "rock snot" has reached Washington County (Source: NYDEC)
Didymo or "rock snot" has reached Washington County (Source: NYDEC)

Invasive species hit North Country from all sides

This month, biologists in New York and Vermont are spreading a chemical in a half-dozen rivers and deltas near the shore of Lake Champlain. The chemical is designed to kill an invasive organism called sea lamprey. The parasites have decimated native trout and freshwater salmon in the lake. But the lamprey battle is only one front in a growing region-wide war against invasive species. Dozens of alien organisms have arrived in the North Country, some carried in the ballast tanks of freighters on the St. Lawrence Seaway, others introduced as garden plants or bait fish. As Brian Mann reports, researchers say these invasive organisms could have a cumulative impact on lakes, rivers and forests that is far more rapid and perhaps more profound than global climate change.  Go to full article
Jonathan Cale and Celia Evans examine scale on a beech tree near Paul Smiths
Jonathan Cale and Celia Evans examine scale on a beech tree near Paul Smiths

Tracking beech bark disease in the Adirondacks

When it comes to tree ailments you've likely heard of Dutch elm, oak wilt and chestnut blight. But a little-known disease has biologists scratching their heads and spending time in the woods this summer. It's called beech bark disease and it was discovered in Maine and Nova Scotia decades ago. The disease has killed beech trees throughout the Northeast, and it's spreading. Todd Moe has more.  Go to full article

Fed court okays ballast law

A federal judge has upheld the constitutionality of a state law restricting ballast water on ships entering the Great Lakes. As Rachel Lippmann reports, the ruling clears the way for other states to take similar action to control the spread of invasive species.  Go to full article

Tracking the ash borer

New York scientists have been watching for signs of the emerald ash borer since it was discovered in Detroit in 2002. Millions of ash trees have been destroyed in failed attempts to stop the spread. DEC researchers fear it's only a matter of time before it's found here. In 2005, Gregory Warner went to Syracuse for one field trip.  Go to full article

Toxin kills endangered birds

A toxin that has killed tens of thousands of shorebirds throughout the Great Lakes is back. Type-E botulism is spread up the food chain by invasive species. And as Bob Allen reports, the toxin recently killed four birds on the endangered species list.  Go to full article

Citizen lawsuit targets foreign ships

For decades foreign ships have brought tiny stowaways called invasive species into the United States. And once they get loose, they upend ecosystems and cause billions of dollars in damage. The shipping industry has yet to seriously address the problem, and now conservation and environmental groups are suing the companies they say are most at fault. Mark Brush has more.  Go to full article

New virus threatens fish

Alarming fish kills in the St. Lawrence River and Lake Ontario are blamed on a new virus that's spreading quickly. Viral hemorrhagic septicemia has already been found in Lake Erie, the Niagara River and--this week state environmental officials confirmed--the virus killed fish in Conesus and Skaneateles in the Finger Lakes. It's also spread to Canada, Michigan and Wisconsin. As its name suggests, the virus causes uncontrolled internal bleeding. In some species, it's easy to tell if you've caught an infected fish. They start to turn dark, almost black, as they're dying, which is likely due to hemorrhaging beneath the skin that makes their color darker. Steve LaPan is the Lake Ontario Unit Leader with the Department of Environmental Conservation. He says the St. Lawrence and Great Lakes ecosystems are already starting to suffer because of the virus. Jonathan Brown reports.  Go to full article
VHS infection zone in orange, buffer zone in yellow
VHS infection zone in orange, buffer zone in yellow

Ontario works to slow fish virus

In Ontario, the Ministry of Natural Resources has drawn up maps to indicate a VHS zone along the border, a buffer zone above that and a VHS-free zone--which still includes most of the province. Ottawa correspondent Lucy Martin has more on containment efforts there.  Go to full article

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