Invasive and Non-Native Species

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Invasive and non-native species imperil native species in the Pacific Northwest’s ecosystems through predation, competition for food, interbreeding, disease transmission, food web disruption, and physical habitat alteration. In its Columbia River Basin Fish and Wildlife Program, the Council acknowledges invasive and non-native species pose direct threats to fish and wildlife restoration efforts through competition, predation, and habitat modification.

News/blog posts on invasive species

Idaho Acts Quickly After Detecting Quagga Mussel Larvae in the Snake River

The mussels were first detected in the Snake River near Twin Falls, Idaho in September during routine monitoring conducted by the Idaho State Department of Agriculture, prompting officials to spring into action.

Invasive Species Prevention in the Columbia River Basin

When invasive and non-native species become introduced into a location, the results can be devastating. From aquatic mussels to wild pigs, they can spread disease, feed on endangered species, compete for resources, overwhelm native species, reduce diversity, and often create cascading effects to the food web.

Mussel Alert: Invasive Species Found In Popular Aquarium Product

Moss balls sold to clean aquarium water were found to contain invasive Zebra mussels, prompting action by Northwest state agencies.

Upper Columbia Tribes Gather Experts To Strategize About Accelerating The Attack On Northern Pike

The problem of invasive Northern Pike in the Columbia River Basin is one of those problems that is someone else’s until it becomes yours.

Washington And Partners Use Early-detection Monitoring To Locate And Control Invasive Aquatic Species

Washington state is watching carefully for signs that invasive species like Northern Pike and zebra and quagga mussels don’t expand (pike) or take hold (mussels) in the state.

Montana, Tribes Seek Partners to Help in Fight Against Invasive Freshwater Mussels

Accelerated effort would include longer hours for boat inspection stations and additional funding.

Northern Pike Could Be Devastating to Salmon and Steelhead, Scientists Warn in Report on Predation

Salmon and steelhead populations could collapse if Northern Pike escape Lake Roosevelt and establish downstream.

Registration Opens For September International Columbia River Conference

The conference in Kimberley, British Columbia, will address key issues including the Columbia River Treaty and climate change, and is being co-hosted by the Columbia Basin Trust and the Northwest Power and Conservation Council.

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