invasive species

Non-native plants are crowding out native ones in the Pacific Northwest and posing new challenges for the organizations that manage them.

The state has trapped more than 900,000 of the crustaceans, which pose a threat to native wildlife, the shellfish industry and shoreline habitats.

The Idaho State Department of Agriculture announced Monday it had detected invasive quagga mussel larvae in the Snake River in Twin Falls. Centennial Waterfront Park in Twin Falls is closed.

Shellfish growers in Willapa Bay in southwest Washington, the self-styled "Oyster Capital of the World," are alarmed by an invasion of potentially destructive non-native European green crabs.

State wildlife officials are requesting more than $8.5 million in emergency funding from the Legislature to boost the fight against invasive European green crabs. A new tool might make that more effective: environmental DNA.

Gov. Jay Inslee has issued an emergency order to address the exponential population growth of the invasive European green crab within the Lummi Nation’s Sea Pond, Makah Bay, Grays Harbor, and Willapa Bay.

European green crabs were found in Washington’s inland waters in 2016, prompting extensive monitoring. Now state officials say this destructive invasive…

At a public boat launch on Black Lake, south of Olympia, Sgt. Pam Taylor holds dozens of small, dark black shells in the palm of her hand. At her side is…

Invasive green crabs are prolific all over the world. Officially called European green crabs, they are known for outcompeting native shellfish. On the…

Feral pigs are a problem in 39 U.S. states and the Northwest is not immune. That’s why officials from four Washington agencies issued a reminder to...