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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.
African Swine Fever Update: Biosecurity is the Key
Pennsylvania State University. Cooperative Extension.
AIS Action Plan: Didymo (Jun 2011) (PDF | 193 KB)

Pennsylvania Fish and Boat Commission.

See also: Aquatic Invasive Species for more action plans
AIS Action Plan: Water Chestnut (Jun 2011) (PDF | 130 KB)
Pennsylvania Fish and Boat Commission.
See also: Aquatic Invasive Species for more action plans
AIS Species and Identification
Montana Fish, Wildlife, and Parks.
Animal Diseases - Exotic Newcastle Disease
Montana Department of Livestock. Animal Health Division.
Anthracnose Diseases of Dogwood (PDF | 313 KB)
University of Arkansas. Cooperative Extension Service.
See also: Common Disease Problems for more fact sheets.
Aquatic Invasive Species
Nebraska Game and Parks Commission.
Aquatic Invasive Species (AIS)
Pennsylvania Fish and Boat Commission.
Scroll to view list of aquatic species banned in Pennsylvania.
Aquatic Invasive Species - Rules & Stations
New Mexico Department of Game & Fish.
See also: New Rules to Battle Aquatic Invasive Species Now in Effect for more information.
Aquatic Invasive Species Stamp
Nebraska Game and Parks Commission.
In 2016, Nebraska implemented an Aquatic Invasive Species Stamp to fund programs aimed at combating aquatic invasive species. Boaters who register their motorized watercraft in Nebraska will notice a $5 fee added to their three-year boater registration fee. Boaters who register their motorized watercraft in any other state will be required to obtain a $15 Aquatic Invasive Species Stamp each year that they boat in Nebraska. This stamp is available for purchase online. A temporary stamp may be purchased at some state parks and recreation areas.
Aquatic Plants and Algae: Curly-Leaf Pondweed
Pennsylvania State University. Cooperative Extension.
Aquatic Plants and Algae: Eurasian Water Milfoil
Pennsylvania State University. Cooperative Extension.
Archives of the Center for Invasive Species Management
Montana State University.
The Center for Invasive Species Management closed in 2015. Archives of relevant materials are available here.
Arkansas Forest Health

Arkansas Agriculture Department. Arkansas Forestry Commission (AFC).

AFC aims to maintain healthy, productive forest ecosystems by preventing, detecting, and suppressing damaging insects and diseases across all land ownerships.
Arkansas Honey Bees & Africanized Honey Bees

Arkansas Agriculture Department. Arkansas State Plant Board.
Arkansas Invasive Pests
University of Arkansas. Cooperative Extension Service.
Provides information to find out how you can help stop the spread of invasive animals, diseases, insects, and plants.
Arkansas Plant Diseases Database
University of Arkansas. Cooperative Extension Service.
The collection of digital images is provided as a service to Arkansas agriculture. These images represent symptoms of both pathological (infectious) and non-pathological (physiological/environmental) disorders of agronomic row crops and horticultural crops that grow in Arkansas. These photos are useful as an identification tool to growers of the crops listed.
Arkansas State Plant Board

Arkansas Agriculture Department.

The mission of the Arkansas State Plant Board is to protect and serve the citizens of Arkansas and the agricultural and business communities by providing information and unbiased enforcement of laws and regulations thus ensuring quality products and services.
Asian Longhorned Beetle - UVM Public Awareness
University of Vermont. Entomological Research Laboratory.