MTPR

invasive species

Divers with the U.S. Fish & Wildlife Service and Montana FWP prepare to dive at Tiber Dam to look for adult zebra and/or quagga mussels, August 7, 2017.
Beth Saboe - MontanaPBS

Scuba divers from the U.S. Fish and Wildlife Service have spent the past three days in north-central Montana, scouring the waters of Tiber Dam for any signs of aquatic invasive mussels.

Last October, a juvenile mussel was found in a water sample from Tiber Reservoir by the Bureau of Reclamation, and suspicious samples were discovered in Canyon Ferry Reservoir, near Townsend. Since then, the state has ramped up its efforts to stave off a potentially destructive infestation of non-native quaqqa and zebra mussels.

Phil Matson collects a water sample from Flathead Lake for use in e-DNA testing for quagga and zebra mussels.
Nicky Ouellet

Wherever you go, you leave behind a tiny trace of yourself, a fingerprint even smaller than a cell that says you were here. Every organism does this, including the invasive quagga and zebra mussels the state is trying to keep out of Montana. This summer, a team of scientists in the Flathead Valley is using cutting-edge technology to detect the mussels’ genetic fingerprints sooner. They say early detection may offer the only hope for eradicating the mussels if they do get here.

Saskatchewan's CL215, or "super scooper," is decontaminated of potential invasive species after fighting the Bridge Coulee Fire on the east side of the continental divide.
Nicky Ouellet

Montana faces twin threats this summer: On land, crews are battling some of the biggest and most destructive fires in the country. In the water, officials are staving off the spread of invasive mussels that could cause millions of dollars of damage to hydropower dams and irrigation lines. These threats come together for wildland firefighters, who often use equipment that travels across the country and has the potential to carry invasive hitchhikers with it. But firefighters are tackling the potential contamination head on.

FWP has inspected more than 23,000 watercraft as part of its effort to keep the mussels, which can cause millions of dollars of damage to hydropower dams and irrigation systems, out of Montana’s waterways.
Katrin Frye

The latest sampling results testing Flathead Lake for invasive quagga and zebra mussels are in, "and I'm happy to tell you that we have no detections," says Jim Elser, director of the University of Montana’s Flathead Lake Biological Station. Elser announced his lab’s latest data from samples taken in April.

Glacier National Park recently reopened Lake McDonald to some motorboat users, following a months-long quarantine to keep invasive mussels out of the lake.
Nicky Ouellet

This summer one tiny-shelled invertebrate has dominated the conversation about keeping non-native species out of Montana.

Since zebra and quagga mussel larvae were detected in Tiber Reservoir last summer, local, state, tribal and federal agencies have scrambled to enact programs and policies to keep the mussels out of Montana’s waterways.

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