This Month at WFRC

Release Date:

This page contains WFRC "Highlights" reported August, 2019


USGS Participates in Panel on Science Careers: On August 6, 2019, USGS Western Fisheries Research Center Director Jill Rolland will participate on a panel at George Washington University in Washington DC. The panel is focused on scientists in non-academic careers.

Contact: Jill Rolland,

Press Inquiries/Media

On July 24, USGS Western Fisheries Research Center was mentioned in an article of the Yakima Herald about a study to determine how sockeye salmon overcome adverse conditions to make their way upstream to Roza Dam on the Yakima River. WFRC has been collaborating with U.S. Bureau of Reclamation and the Yakima Tribe to collect and analyze data that will be used to inform the Yakima Basin Integrated Plan for sockeye salmon.

Contact: Toby Kock,

New Publications

New Report Investigates the Effects of Cyanobacteria Blooms on Endangered Suckers in the Upper Klamath Lake, OR: Historically, populations of Lost River suckers of the Upper Klamath Basin were so numerous that they were commercially harvested; however, declining numbers throughout the 20th century led to the listing of the species under the United States Endangered Species Act in 1988. Habitat destruction, poor water quality, competition with (and predation by) nonnative species are hypothesized as primary causes of population decline. Age data indicate that almost all adult suckers presently in Upper Klamath Lake spawning populations were hatched in the early 1990s. Consistently high mortality during the first year of life may be preventing the recruitment of young adults. The specific causes of juvenile sucker mortality are unknown; however, the absence of juvenile suckers in trap net catches coincides with degraded water quality associated with the decay of cyanobacteria blooms and exposure to toxic microcystin produced by Microcystis cyanobacteria. In a recent USGS report, prepared in cooperation with the U.S. Fish and Wildlife Service and Bureau of Reclamation, scientists examine the effects of environmentally relevant doses of microcystin on the survival and health of hatchery-reared juvenile Lost River suckers.

Martin, B.A., K.R., Echols, D.G. Elliott, K. Feltz, C.M. Conway, and S.M. Burdick. 2019. Effects of microcystin-LR on juvenile Lost River suckers (Deltistes luxatus) during feeding trails, Upper Klamath Lake, Oregon, 2014-16: U.S. Geological Survey Open-File Report 2019-1079, 22 p., DOI:

Contact: Barbara Martin,