TY - RPRT TI - Long-term population dynamics and conservation risk of migratory bull trout in the upper Columbia River basin AU - Ryan Kovach AU - Jonathan Armstrong AU - David Schmetterling AU - Robert Al-Chokhachy AU - Clint C. Muhlfeld PY - 2018 DO - 10.1139/cjfas-2017-0466 UR - https://pubs.usgs.gov/publication/70210225 ID - 70210225 ER -