Hayley Glassic

Investigating the Future of Fishes in the West

I am a fish biologist with the US Geological Survey - NOROCK. My research focuses on the potential for remote sensing data to inform prioritization and restoration of Lahontan Cutthroat Trout habitat.

I was a PhD student with Dr. Christopher Guy (USGS Co-op Unit) at Montana State University. My dissertation focused on the implications of non-native lake trout suppression on the ecology of Yellowstone Lake in Yellowstone National Park, WY.

I was a Master's student with Dr. Jereme Gaeta at Utah State University studying fishes in Bear Lake, UT-ID. My research focused on drought-induced lake level fluctuations and recruitment of the Bear Lake Sculpin as well as the interaction between drought-induced lake level fluctuations and Bonneville cutthroat trout growth rates and recruitment (thesis download).

Visit my Google Scholar or Researchgate profiles.

Selected Publications

H.C. Glassic, C.S. Guy, T.M. Koel. 2021. Diets and Stable Isotope Signatures of Native and Nonnative Leucisid Fishes Advances Our Understanding of the Yellowstone Lake Food Web. Fishes. https://doi.org/10.3390/fishes6040051

Guy, C.S., T.L. Cox, J.R. Williams, C.D. Brown, R.W. Eckelbecker, H.C. Glassic et al. 2021. A paradoxical knowledge gap in science for critically endangered fishes and game fishes during the sixth mass extinction. Science Advances. https://doi.org/10.1038/s41598-021-87871-y

Driscoll, S.C.*, H.C. Glassic, C.S. Guy, T.M. Koel. 2021. Presence of microplastics in the food web of the largest high-elevation lake in North America. Water. https://doi.org/10.3390/w13030264

Sylvester, R., J. Frye, C. Gabreski, M. Webb, and H.C. Glassic. 2021. Kootenai River White Sturgeon Acipenser transmontanus: 2009-2020 Investigations in Montana. Montana Fish, Wildlife & Parks annual report.

Briggs, M.A., L. K. Albertson, D.R. Lujan, L.M. Tronstad, H.C. Glassic, C.S. Guy, T.M. Koel. 2020. Carcass deposition to suppress invasive lake trout causes differential mortality of two common benthic invertebrates in Yellowstone Lake, Wyoming. Fundemental and Applied Limnology. https://doi.org/10.1127/fal/2020/1352

Furey, K.M.*, H.C. Glassic, C. S. Guy, T. M. Koel, J.L. Arnold, P.D. Doepke, P.E. Bigelow. 2020. Diets of Longnose Sucker in Yellowstone Lake, Yellowstone National Park, U.S.A. Journal of Freshwater Ecology. https://doi.org/10.1080/02705060.2020.1807421

Glassic, H.C., Guy, C., Rotella, J., Nagel, C., Schmetterling, D., Dalbey, S. 2020. Fort Peck Paddlefish Population Survival and Abundance in the Missouri River. Journal of Applied Ichthyology. https://doi.org/10.1111/jai.14067

Koel, T., Arnold, J., Bigelow, P., Brenden, T., Davis, J. D. , Detjens, C., Doepke, P., Ertel, H.C. Glassic, et al. 2020. Yellowstone Lake Ecosystem Restoration: A Case Study for Invasive Fish Management. Fishes. https://www.mdpi.com/2410-3888/5/2/18

Glassic, H.C. and Jereme W. Gaeta. 2020. The Influence of Multiyear Drought and Associated Reduction in Tributary Connectivity on an Adfluvial Fish Species. Ecology of Freshwater Fish. https://doi.org/10.1111/eff.12535

Glassic, H.C., Kurt C. Heim, Christopher S. Guy. 2019. Creating Figures in R that Meet the AFS Style Guide: Standardization and Supporting Script. Fisheries. https://afspubs.onlinelibrary.wiley.com/doi/full/10.1002/fsh.10272

Glassic, H.C. and Jereme W. Gaeta. 2019. Multiyear Drought-Driven Littoral Habitat Loss and the Response of an Endemic Fish Species in a Deep, Desert Lake. Freshwater Biology. https://onlinelibrary.wiley.com/doi/abs/10.1111/fwb.13231

Glassic, H. C., C.S. Guy, T.M. Koel. 2021. Comparative Feeding Ecology of Native and Nonnative Salmonids during the management of a Nonnative Apex Predator in Yellowstone Lake, Yellowstone National Park. Freshwater Biology. In review.

*denotes mentored undergraduate

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