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Trophic implications of a phenological paradigm shift: bald eagles and salmon in a changing climate

Dates

Start Date
2017-01-01
End Date
2018-09-30

Summary

Climate change influences apex predators in complex ways, due to their important trophic position, capacity for resource plasticity, and sensitivity to numerous anthropogenic stressors. Bald eagles, an ecologically and culturally significant apex predator, congregate seasonally in high densities on salmon spawning rivers across the Pacific Northwest. One of the largest eagle concentrations is in the Skagit River watershed, which connects the montane wilderness of North Cascades National Park to the Puget Sound. Using multiple long-term datasets, we evaluated the relationship between local bald eagle abundance, chum and coho salmon availability and phenology, and the number and timing of flood events in the Skagit River. We analyzed [...]

Child Items (3)

Contacts

Principal Investigator :
Madeleine A Rubenstein
Co-Investigator :
Roger Christophersen, Jason I. Ransom
Funding Agency :
National CASC

Attached Files

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BaldEagle_SkagitRiver_2015_JasonRansom_NPS.jpg
“Bald eagle with fish carcass on Skagit River; Credit: Jason Ransom, NPS”
thumbnail 196.9 KB
Bald eagle with fish carcass on Skagit River; Credit: Jason Ransom, NPS
Bald eagle with fish carcass on Skagit River; Credit: Jason Ransom, NPS

Communities

  • National CASC
  • National and Regional Climate Adaptation Science Centers

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Wildlife and Plants

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