Chandalar River chum salmon (Oncorhynchus keta) riverscape-scale salmon habitat assessment and monitoring.

Project Description

An increase in mining exploration and the effects of climate change have raised concerns about the future of Chandalar River chum salmon among local community members and state and Federal fisheries managers. Yukon fall chum rely on systems that are spring fed or have geologically significant hyporheic groundwater upwellings, since these locations provide stable water temperatures for eggs and juveniles throughout the winter months. However, limited information is available on the spatial distribution and frequency of these upwellings on the Chandalar River. The goals of this project are to identify the longitudinal patterns of groundwater upwellings, as measured by thermal variability, and the relationship between the spatial distribution of spawning salmon and groundwater discharge patterns. This project is funded by U.S. Fish and Wildlife Service Subsistence Management Program.

Project Funding

U.S. Fish and Wildlife Service
Start Date: 0000-00-00
End Date: 0000-00-00


Publications and products

Clawson, C., Falke, J., Rose, J., Martin, A., Cristóbal, J., and A. Prakash. (2015). "Chandalar River Chum Salmon (Oncorhynchus keta) riverscape-scale salmon habitat assessment and monitoring". Alaska Chapter American Fisheries Society Annual Meeting, November 4-6, 2015. Homer, AK. Poster presentation.


Research Team

Jeffrey Falke

Jeffrey Falke

Principal Investigator

Associate Professor


  • Freshwater fish ecology and conservation biology
  • Landscape and spatial ecology of freshwater systems
  • Ecology and evolutionary biology of salmonids
  • Climate change impacts on aquatic systems
  • Impacts of introducted species on native aquatic fauna

Full Profile
Research Student

Chelsea Clawson