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

Increasing walleye numbers cause regional concern over impacts to salmon, steelhead

The Council hosted a panel of walleye experts at its October meeting in Idaho to discuss current research and future management options.

"Just gross"— Council hears updates on invasive species from regional coordinators

The threat of invasive species continues to loom large in the Columbia River Basin, with the potential to significantly disrupt ecosystems and infrastructure. Ahead of National Invasives Species Awareness Week (February 23-27), the Council heard from a panel of regional experts on existing and emerging species of concern.

Protecting the Columbia Basin from invasive quagga mussels

Last September, quagga mussel larvae were detected in the Snake River near Twin Falls, Idaho during routine monitoring conducted by the Idaho State Department of Agriculture, the first time they had been found in the basin. Keeping them out of the basin will be a year-round, full-time effort.

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.

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