Department of Environmental Conservation

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Nuisance & Invasive Species

Nuisance Species

Visit the Nuisance Wildlife Species page to identify how you can prevent and control problems with wildlife.

Invasive Species

What is an invasive species?

Invasive species are non-native species that can cause harm to the environment, the economy or to human health. Invasives come from all around the world. As international trade increases, so does the rate of invasive species introductions.

Why are invasive species a threat?

Invasive species threaten nearly every aspect of our world and are one of the greatest threats to New York's biodiversity. They cause or contribute to:

  • Habitat degradation and loss
  • The loss of native fish, wildlife and tree species
  • The loss of recreational opportunities and income
  • Crop damage and diseases in humans and livestock

NYSDEC Seeks Contractor for Croton River Hydrilla Control Project

The Department of Environmental Conservation seeks a contractor to provide field support for a long term hydrilla control and management project (2017-2021) involving extensive monitoring, sample collecting, and herbicide treatment in and around the Croton River. This contract will involve interacting with the public as well as periodic meetings and conference calls. Communication and interpersonal skills are desired. View more information about the Croton Hydrilla Control Project.

To request a copy of the invitation for bids, please contact:

NYS Department of Environmental Conservation
Division of Lands and Forests, Bureau of Invasive Species and Ecosystem Health
Catherine McGlynn
Aquatic Invasive Species Coordinator
625 Broadway, 5th Floor
Albany, NY 12233-4250
United States
Ph: 518-402-9405

Rapid Response for Invasive Species: Framework for Response

DEC Policy Available for Download

This program policy is intended to serve as an aid to resource managers who are responsible for responding to newly discovered invasive species infestations. Early detection of new invasions is critical to any rapid response. The process that we have selected ensures that managers give attention to all of the necessary components of an effective response: coordination, communication, public outreach, planning, science, information management, laws and regulations, resources and logistics. Our experiences with snakehead fish, chronic wasting disease, hydrilla, oak wilt, Asian long horned beetle, and emerald ash borer in New York State have been used to help develop and refine this framework.

Rapid Response for Invasive Species: Framework for Response (PDF, 1.3 MB)

Species Specific Information

Use the links below to find information on specific invasive species and learn what DEC is doing to combat them or refer to the Invasive Species Regulations page for a full list of prohibited and regulated species pursuant to 6 NYCRR Part 575.


Plant Diseases

Oak Wilt


Fish and Shellfish