Cooperative Fish and Wildlife Research Units Program: Alaska
Education, Research and Technical Assistance for Managing Our Natural Resources

Alaska Project


A rapid assessment method to estimate the distribution of juvenile Chinook salmon in an interior Alaska river basin

January 2014 - August 2016


Personnel

Participating Agencies

  • Alaska Department of Fish and Game
Allison Matter searches for juvenile Chinook salmon in Monument Creek, Alaska

Identification and protection of water bodies used by anadromous species in Alaska are critical in light of increasing threats to fish populations, yet challenging given budgetary and logistical limitations. Non-invasive, rapid assessment sampling techniques may reduce costs and effort while increasing species detection efficiencies. This project was a collaboration between the University of Alaska Fairbanks and the Alaska Department of Fish and Game. The combination of habitat modeling, occupancy estimation based on eDNA, and snorkel surveys provided a useful, rapid-assessment method to predict and subsequently quantify the distribution of juvenile salmon in previously unsampled tributary habitats in the Chena River, Alaska. These methods will provide tools for managers to rapidly and efficiently map critical rearing habitats and prioritize sampling efforts to expand the known distribution of juvenile salmon in interior Alaska streams.

Research Publications Publication Date
Matter, A.N., Falke, J.A., López, J.A., and J.W. Savereide. 2018. A rapid- assessment method to estimate the distribution of juvenile Chinook salmon in tributary habitats using eDNA and occupancy estimation. North American Journal of Fisheries Management 38: 223-236. DOI: 10.1002/nafm.10014. 2018-01-31
Presentations Presentation Date
Martin, A.N., Falke, J.A., Pomeranz, J.F., and J.W. Saveride. 2014. Habitat potential for juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Chena River basin, Alaska. Alaska Chapter American Fisheries Society Annual Meeting, Juneau, Alaska, 21-24 October 2014. 2014-10-21
Martin, A.N., Falke, J.A., Savereide, J.W., and J.A. Lopez. 2015. Estimating the distribution of juvenile Chinook Salmon (Oncorhynchus tshawytscha) using habitat modeling and eDNA in an interior Alaska river basin. Alaska Chapter American Fisheries Society Annual Meeting, Homer, Alaska, 4-6 November, 2015. 2015-11-04
Martin, A.N., Falke, J.A., Savereide, J.W., and J.A. Lopez. 2016. Estimating the Distribution of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) Using Habitat Modeling and eDNA in an Interior Alaska River Basin. Annual Meeting of the American Fisheries Society, Kansas City, MO, 22-26 August 2016. 2016-08-22
Theses and Dissertations Publication Date
Matter, A. N. 2016. A rapid assessment method to estimate the distribution of juvenile Chinook salmon (Oncorhynchus tshawytscha) in an interior Alaska river basin. Unpublished Master's thesis. School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska. 66 pp. 2016-08-31