Fisheries & Ecological Services
Alaska Region


Environmental Contaminants

Integrated Pest Management

Invasive species affect many National Wildlife Refuges across the nation, including some in Alaska. The Service uses an integrated pest management (IPM) approach Karluk Lake, Kodiak NWR. USFWS. Click to Enlarge when controlling invasive species, employing a combination of techniques such as biological control, habitat manipulation, modification of cultural practices, and other control measures. Pesticides are used only when other control mechanisms are inadequate to achieve sufficient control of the pest species. Control measures are selected and implemented in a manner that minimizes risks to human health, beneficial and nontarget organisms, and the environment.

Contaminant specialists are responsible for approving the use of pesticides to control invasive species on refuges. This process involves detailed analyses of alternative management strategies, short- and long-term effects on water quality and wildlife, and an evaluation of resource benefits relative to potential environmental risks.


Last updated: March 23, 2010