Columbia River Fisheries Program Office
Pacific Region

Aquatic Nuisance Species

Prevent the Pathway!The introduction and establishment of invasive or nuisance species is considered one of the greatest threats to global biodiversity, second only to habitat destruction.  Invasive species have been identified as the cause in decline of at least 48% of species listed as threatened or endangered under the United States Endangered Species Act.  Aquatic nuisance species may reduce the diversity and abundance of native species, degrade aquatic habitats, threaten water quality and availability, alter important ecological processes and pose a general threat to commercial, agricultural and recreational industries.  An estimated $120 billion is spent annually in the United States to deal with the multitude of problems associated with Invasive Species.  Aquatic nuisance species are introduced or spread to new locations a number of ways, but humans remain the primary vector of dispersal.  Prevention is the most cost effective means of managing invasive species.  One of the most effective ways to prevent or reduce the introduction, spread and impact of invasive species is public education.

Columbia River Aquatic Nuisance Species Trunk

Aquatic Nuisance Species of concern

Resources (Links to Fact Sheets and other ANS Materials)

YouTube Videos

Last updated: July 11, 2013
Columbia River Fisheries Program Office
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