Invasive Species: A Threat to Lake George

Invasive species are non-native plants and animals that outcompete native plants, and native wildlife for resources and can crowd out the native species.

They also affect humans by degrading boating, fishing, and recreational areas and by reducing lakeshore property values and tourism. (Click for more information about what invasive species are and how they spread.)

Education and spread prevention are the most cost-effective ways to control invasive wildlife in Lake George, which is why the Lake George Association invests in invasive species protection as well as education.

The 6 known aquatic invasive species in Lake George

Asian clams, Eurasian watermilfoilZebra mussels,  Chinese mystery snails, spiny water fleas, and curly-leaf pondweed are all known to be established in the waters of Lake George.  Click on the images below for more information about each species:

The asian clam, an invasive species of Lake George

Lake George invasive species: eurasian milfoil

 zebra mussels in Lake George

The spiny water flea is an invasive species now found in Lake George

curly leaf pondweed, a non-native species found in Lake George

Invasive Wildlife in Lake George includes the chinese mystery snail.

Potential aquatic invasive species

The following species threaten to invade Lake George:

Terrestrial Invasive Species

The water is not the only place where invasive wildlife can become established. The Lake George watershed is also susceptible to invasive species.

In fact, terrestrial invasive wildlife are the second leading factor in biodiversity loss. The following plants have been identified by the Lake George Land Conservancy as the “top five terrestrial invasive plants of the Lake George Watershed.”

  • Common reed grass
  • Garlic mustard
  • Japanese knotweed
  • Purple loosestrife
  • Shrubby honeysuckles

Other significant terrestrial invaders in the Lake George watershed include black locust, white sweetclover, spotted knapweed, Asiatic bittersweet, multiflora rose, winged euonymous (or burning bush), coltsfoot, black swallowwort, and velvetleaf.  The New York State Department of Environmental Conservation regulates the distribution of plants known to be invasive species in New York, you can see the list of prohibited and regulated plants here.

If you are planning gardening or landscaping activities in the Lake George watershed, check out our tips for landscaping with native plants, and be a part of Lake-Friendly Living!  If you would like to be a part of monitoring and managing the spread of invasive wildlife, check out our Citizen Science programs.

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All the money raised by the Lake George Association goes to projects and programs that benefit the Lake and the watershed, protecting Lake George water quality now and in the future.
Lake George Association

Lake George Association