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U.S. Department of Agriculture
National Invasive Species Information Center
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Invasive Species Resources

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A Brief Guide to Kentucky's Non-Native, Invasive Species, Common Weeds, and Other Unwanted Plants (PDF | 4.7 MB)
Louisville Water Company.
All About Birds - European Starling
Cornell Laboratory of Ornithology.
Note: Nesting Behavior
Anthracnose of Flowering Dogwood (PDF | 424 KB)
Cornell University. Cooperative Extension of Suffolk County. Horticulture Diagnostic Laboratory.
See also: Tree and Shrub Disease for more fact sheets.
Aquatic Invasive Species - European Green Crab
Washington Department of Fish and Wildlife.
Aquatic Invasive Species - New Zealand mudsnail
Washington Department of Fish and Wildlife.
Asian Clams - Lake George Fact Sheet No. 53 (Feb 2014) (PDF | 143 KB)
Fund for Lake George (New York).
Biological Control: A Guide to Natural Enemies in North America
Cornell University. Agriculture and Life Sciences.
This guide provides photographs and descriptions of biological control (or biocontrol) agents of insect, disease, and weed pests in North America. It is also a tutorial on the concept and practice of biological control and integrated pest management (IPM). Whether you are an educator, a commercial grower, a student, a researcher, a land manager, or an extension or regulatory agent, we hope you will find this information useful.
Biology and Silvicultural Management of Sirex Woodwasp (2009) (PDF | 207 KB)
Cornell University Cooperative Extension. Department of Natural Resources.
See also: ForestConnect Fact Sheet Series for more factsheets.
Bird Flu (Avian Influenza) - Frequently Asked Questions About Bird Flu
New York Department of Environmental Conservation.
Brown Tree Snake Program
Commonwealth of Northern Mariana Islands. Division of Fish and Wildlife.
Chinese Mitten Crab Facts
Washington Sea Grant.
Chinese Mitten Crab in the Hudson River Estuary
New York Department of Environmental Conservation.
Class A Noxious Weed: Garlic Mustard
Washington State Noxious Weed Control Board.
Class A Noxious Weed: Giant Hogweed
Washington State Noxious Weed Control Board.
Class A Noxious Weed: Hydrilla
Washington State Noxious Weed Control Board.
Class A Noxious Weed: Johnsongrass
Washington State Noxious Weed Control Board.
Class A Noxious Weed: Kudzu
Washington State Noxious Weed Control Board.
Class A Noxious Weed: Purple Starthistle
Washington State Noxious Weed Control Board.
Class B Noxious Weed: Brazilian Elodea
Washington State Noxious Weed Control Board.
Class B Noxious Weed: Common Reed
Washington State Noxious Weed Control Board.