Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native mussels are in precipitous decline across North America. As part of the Confederated Tribes of the Umatilla Indian Reservation’s (CTUIR) First Foods management framework that places significant value on the cultural importance of traditional food resources, they have been identified as a top conservation priority in the Pacific Northwest. Freshwater mussels are a vital component of river ecosystems, a historic food resource, and were used for adornment, jewelry, tools, and trade. Yet, little is known about the basic biology and ecology of these organisms, including where they are, how many of them remain, and what habitat characteristics (e.g., water temperature, flow, etc.) are important to them. There is a pressing need to [...]