200751200 - Documentation of food-web linkages in the mainstem Columbia River: towards understanding the role of invasive species and establishing a baseline trophic state

Sponsor: US Geological Survey - Cook

Short description: We propose to use stable isotopes to document food web linkages in the Bonneville Reservoir. We propose to determine isotopic signatures of representative trophic levels and use multi-source mixing models to quantify food web sources and pathways

Location: Mainstem/Systemwide province, Columbia Gorge subbasin

Budgets: FY08: $232,228 | FY09: $105,146

Primary species:
Anadromous: All Anadromous Fish
Anadromous: Pacific Lamprey
Anadromous: Lower Columbia River White Sturgeon
Resident: Freshwater Mussels
Resident: Pacific Lamprey
Resident: White Sturgeon: All Populations


ObjectiveDescriptionSubbasin planStrategies
Limit effects of invasive species on native biota From October 2004 addendum: Comment from Oregon Invasive Species Council (p. 3) states that the subbasin inventory is incomplete without describing the actions (or potential actions) to protect fish and wildlife in the subbasin from negative impacts of invasive species. Also, the introduced Asian clam and its potential effect on other species could be more fully developed. Columbia Gorge
Protect the habitat and ecological functions Protect the habitat areas and ecological functions that are at present relatively productive for the life stages of the species important to the biological objectives of this program, including for spawning, resting, rearing, and migration of salmon and steelhead and resident fish. Enhance and restore habitats and ecological functions that connect to the protected areas. Mainstem ammendments to the Fish and Wildlife program



  • ISRP: Unranked
  • Council: Not fundable
  • BPA: Not fundable