Potential Burrowing Habitat for Lamprey Larvae in the Umpqua River Basin, Oregon

Release Date:

Lampreys in the Umpqua River basin face multiple threats, including predation by nonnative fish such as smallmouth bass.

USGS and Tribal researchers developed a spatially explicit framework to support the conservation of Western brook lamprey and Pacific lamprey in the Umpqua River. The framework identified 18 percent of the river network as likely to support potential burrowing habitat for lamprey larvae based on geomorphic conditions. Average August water temperatures were suitable for smallmouth bass over  32 percent of potential lamprey burrowing habitat, which increased to 42 percent with projected 2040 temperatures. At finer spatial scales, potential burrowing habitat was influenced by channel features, such as large wood, pools, and local channel slope and width. These results provide an initial template for identifying locations in river networks likely to have potential burrowing habitat, considering the overlap between threats and habitats, and planning conservation actions to support native lampreys.  

Jones, K.L., Dunham, J.B., O'Connor, J.E., Keith, M.K., Mangano, J.F., 2020, River network and reach scale controls on larval lamprey habitat in the Umpqua River Basin, Oregon: North American Journal of Fisheries Management, https://doi.org/10.1002/nafm.10487 

Related Content

Filter Total Items: 2
Date published: September 26, 2018
Status: Active

Controls on Habitat for Native Lampreys in the Umpqua River Basin

Native lampreys are culturally significant fishes for tribal communities in Oregon. As such, the USGS has begun working with the Cow Creek Band of Umpqua Tribe of Indians to study changes that may be affecting habitat for native Pacific and western brook lampreys in the Umpqua River basin.

Date published: November 20, 2017
Status: Active

Aquatic & Landscape Ecology Research Team (FRESC)

Fresh waters are one of the most valuable and threatened resources worldwide. They supply critical services to society and harbor many of the world’s most imperiled species. We conduct research and provide technical assistance to address challenges to fresh waters. Our research focuses on ecological processes in freshwater and terrestrial systems and the effects of those processes on landscape...