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Jill Janak

Jill Janak

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352


Jill Janak is a Post Masters Research Associate who joined the Ecology group in 2010. Jill assists with the maintenance and care of the Aquatic Research Laboratory (ARL), where salmonids, sturgeon, and other fish species are raised and held for use in laboratory and field studies. Jill’s main area of research is fish hard part geochemistry, which uses the hard parts of fish such as otoliths (ear bones) and fin rays to determine provenance, migratory, and environmental history. Jill also supports a variety of research projects that assess the effects of hydropower on fish, including radio and acoustic telemetry studies to assess survival of migrating salmon passing through hydropower facilities, as well as biological responses of fish to tagging and surgery.

Research Interests

  • Life history strategies of salmonids
  • Pacific salmon ecology
  • Otolith geochemistry
  • Aquaculture

Education and Credentials

  • B.S., Biology, University of Texas at Brownsville, 2009.
  • M.S., Environmental Science, Washington State University, 2017.

PNNL Publications


  • Garavelli L., T.J. Linley, B.J. Bellgraph, B.M. Rhode, J.M. Janak, and A. Colotelo. 2019. "Evaluation of Passage and sorting of Adult Pacific Salmonids through a Novel Fish Passage Technology." Fisheries Research 212. PNNL-SA-136651. doi:10.1016/j.fishres.2018.12.010


  • Mueller R.P., J.M. Janak, S.A. Liss, R.S. Brown, Z. Deng, and R.A. Harnish. 2017. "Retention and Effects of Miniature Transmitters in Juvenile American Eels." Fisheries Research 195. PNNL-SA-120628. doi:10.1016/j.fishres.2017.06.017


  • Janak J.M., R.S. Brown, A.H. Colotelo, B.D. Pflugrath, J.R. Stephenson, Z. Deng, and T.J. Carlson, et al. 2012. "The Effects of Neutrally Buoyant, Externally Attached Transmitters on Swimming Performance and Predator Avoidance of Juvenile Chinook Salmon." Transactions of the American Fisheries Society 141, no. 5:1424-1432. PNNL-SA-82928. doi:10.1080/00028487.2012.688915


Additional Information