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Paddlefish Study Project

Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL

www.umesc.usgs.gov — Paddlefish (Polyodon spathula) have been lost from four states and Canada, and 11 of 22 states within the remaining species range now list the paddlefish as endangered, threatened, or a species of special concern. Restoration of paddlefish populations is a shared goal of many state and federal agencies. UMESC scientists, in collaboration with the More...

  • Image of a Paddlefish (Polyodon spathula)

Beulah Reservoir (2001) - Food-Based Studies for Bull Trout

Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL

wfrc.usgs.gov — Bull trout were listed by the U.S. Fish and Wildlife Service as a threatened species throughout the Columbia and Klamath river basins in 1998, and Oregon has listed the North Fork Malheur River population "Of Special Concern". Reasons for the decline of bull trout in the Malheur River likely include habitat degradation, habitat fragmentation, and More...

  • Catch and release of bull trout at Beulah Reservoir.

Evaluate Status of Coastal Cutthroat Trout in the Columbia River Basin Above Bonneville Dam

Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL

wfrc.usgs.gov — The goal of this project is to provide vital information on the current status of cutthroat trout (Oncorhynchus clarkii) populations as a necessary prerequisite to determining need and type of future recovery efforts. Coastal cutthroat trout were petitioned for listing under the Endangered Species Act in 1997.

  • cutthroat trout (Oncorhynchus clarkii)

Water Quality and Other Environmental Variables Associated With Variations in Population Densitites of the Santa Ana Sucker

Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL

wfrc.usgs.gov — The Santa Ana sucker (Catostomus santaanae), was recently identified by the U.S. Fish and Wildlife Service (FWS) as a species of special concern. This sucker is endemic to the Los Angeles, San Gabriel, and Santa Ana river drainages of southern California. The purpose of this study was to develop a better understanding of environmental factors More...

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