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Anglers enlisted in water fight
Great Lakes Echo (6/29)
A recent study by researchers at Cornell University, in N.Y., revealed that anglers in the Great Lakes region are aware of and concerned about the threat of aquatic invasive species (AIS).

Lake State opens Sea Grant office
Sault Ste. Marie Evening News (6/29)
Lake Superior State University officially welcomed its new Michigan Sea Grant office to campus with a ribbon cutting ceremony Monday morning.

Stone Lab hosts series of experts to discuss lake
Port Clinton News Herald (6/28)
In Ohio, people looking to learn more about the issues facing Lake Erie will have several opportunities this summer to hear firsthand from the experts in the field who deal with those issues every day.

Goal of UWM habitat study is to help restore fisheries in river
Milwaukee Journal Sentinel (6/25)
Led by University of Wisconsin-Milwaukee's School of Freshwater Sciences, a habitat study's goal is to identify habitat that supports estuary fish and recommend strategies to protect, encourage and connect these habitats in harbor revitalization and habitat restoration plans.

Funding milestone reached for Aquatic Research Lab expansion
The Sault Ste. Marie Evening News (6/13)
Both houses of Michiganís legislature have approved nearly $9 million in funding for an expansion of Lake Superior State Universityís successful Aquatic Research Lab (ARL).

Students dive, document Sheboygan shipwreck
Sheboygan Press (6/13)
A team of budding nautical archaeologists from East Carolina University dove below the waves of Lake Michigan to discover what treasures lay hidden on the sandy bottom.

TEACH Calendar of Events
What's going on in your neighborhood this month? Meet other people and learn together at recreational and educational events! Our new dynamic calendar is updated daily with current educational events.
TEACH Invasive Species

table of contents
Introduction
The Zebra Mussel
Other species making headlines
How do invasive species get here?
Prevention and control
How can you prevent the spread of nonindigenous species?
References and more information

If you live on the Great Lakes or in a similar coastal area, you've no doubt heard of zebra mussels or sea lamprey. Chances are you've also seen patches of purple loosestrife growing in your community or on the side of a local highway. You might not have recogized this attractive flowering plant as a non-native species, but it is. Although pretty to look at, these purple stalks are choking out native plant species by overtaking and altering their habitat.

Sea Lamprey. Click to see larger image.These are just three of the more than 140 nonindigenous, or invasive, species that have become established in and around the Great Lakes since the 1800s. In fact, due in large part to increases in the volume of shipping traffic, the introduction of new "exotic" species has increased dramatically over the past 50 years. More than 87 nonindigenous aquatic species have been accidentally introduced into the Great Lakes in the 20th Century alone. Once introduced, invasive species must be managed and controlled, as they are virtually impossible to eradicate.

While many non-native species have no serious ecological impact, the introduction of a single key species can, as in the example of the sea lamprey, cause a sudden and dramatic shift in the entire ecosystem's structure. New species can significantly change the interactions between existing species (and between those species and their non-living environment), creating ecosystems that are unstable and unpredictable.

Graphic: Sea Lamprey shown attached to a lake trout. Courtesy U.S. Fish & Wildlife Service.

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