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Hannah Caroll

Hannah M. Carroll

Assistant Professor of Environmental Science and Ecology


Ph.D., Iowa State University, Ecology & Evolutionary Biology (EEB) and Environmental Science (ENVS) (co-majors), 2020
B.S., University of Washington - Tacoma, Environmental Science, 2008


I grew up in a small town in southwest Missouri. I received my BS in Environmental Science from University of Washington-Tacoma, with a thesis project focused on marine larval ecology. I earned my PhD from Iowa State University with co-majors in Ecology and Evolutionary Biology (EEB), and Environmental Science (ENVS). My dissertation research focused on plant communities at regional to sub-continental scales and how they have interacted with climate over geologic time. I completed a postdoctoral fellowship in the IRACDA@UCLA faculty training program, and am a UCLA Center for Diverse Leadership in Science Early Career Fellow. My postdoctoral research involved improving statistical and methodological techniques for the calibration of paleoclimate signals, and writing open-source software to allow for community-wide implementation of reproducible statistical methods in clumped isotope paleothermometry.

I am passionate about undergraduate and graduate science education, and my teaching interests center around evidence-based teaching methods aimed at promoting equity and inclusion in STEM.

What most excites you about your field?

Studying the ecology and climate of the past is exciting, because it’s the closest we can get to having a time machine. I enjoy trying to piece together clues left behind by ancient organisms to better understand what happened thousands or tens of thousands of years ago. It gives us context for what we are experiencing now, and what we will experience in the future as our climate continues to change.

What is your favorite thing about the Gunnison Valley?

I love the rugged beauty of the Gunnison Valley

Courses Taught

  • BIOL 130: Environmental Biology
  • ENVS 301: Science of Sustainability
  • BIOL 606: Ecological Research Methods
  • BIOL 697: Scientific Computing


  • Taylor, B., H.M. Carroll, and R. Bingham. In press. The Reproductive Ecology of Astragalus microcymbus. Aquilegia Magazine. Colorado Native Plant Society.
  • Román-Palacios, C., H.M. Carroll, and A. Tripati. 2023. ‘bayclumpr’: Bayesian Analysis of Clumped Isotope Datasets. R package version 0.1.0. https://cran.r-project.org/package=bayclumpr
  • Lucarelli, J.K, H.M. Carroll, R.N. Ulrich, B. Elliott, T.B. Coplen, R. Eagle, and A. Tripati. 2023. Equilibrated gas and carbonate standard-derived dual (Δ47 and Δ48) clumped isotope values. Geochemistry, Geophysics, Geosystems 24(2):e2022GC010458. DOI: https://doi.org/10.1029/2022GC010458
  • Houston, D.D., J.D. Satler, T.K. Stack*, H.M. Carroll, A.M. Bevan*, A.L. Moya*, and K.D. Alexander. 2022. A Phylogenomic perspective on the evolutionary history of the stonefly genus Suwallia (Plecoptera: Chloroperlidae) revealed by ultraconserved genomic elements. Molecular Phylogenetics and Evolution 166:107320. DOI: https://doi.org/10.1016/j.ympev.2021.107320
  • Upadhyay, D., J. Lucarelli, A. Arnold, R. Flores, H. Bricker, R.N. Ulrich, G. Jesmok, L. Santi, W. Defliese, R. Eagle, H.M. Carroll, J. Bateman, V. Petryshyn, S. Loyd, J. Tang, A. Priyadarshi, B. Elliott, and A. Tripati. 2021. Carbonate clumped isotope analysis (Δ47) of 21 carbonate standards determined via gas source isotope ratio mass spectrometry on four instrumental configurations using carbonate-based standardization and multi-year datasets. Rapid Communications in Mass Spectrometry 35(17):e9143. DOI: http://dx.doi.org/10.1002/rcm.9143
  • Ulrich, R.N., M. Guillermic, J. Campbell*, A. Hakim*, R. Han*, S. Singh*, J.D. Stewart, C. Román-Palacios, H.M. Carroll, I. De Corte, R.E. Gilmore, W. Doss, A. Tripati, J.B. Ries, and R.A. Eagle. 2021. Patterns of trace element incorporation in carbonate biominerals recapitulate phylogeny for diverse marine organisms. Frontiers in Earth Science – Geochemistry 9:641760. DOI: https://doi.org/10.3389/feart.2021.641760
  • Wamboldt, J.J., A.D. Wanamaker, H.M. Carroll, R. Schultz, and J.E. Morris. 2020. Trophic dynamics of a reservoir fishery following an introduction of a top predator: Insights from stable carbon and nitrogen isotopes. Fisheries Management and Ecology. 27:531–539. DOI: http://dx.doi.org/10.1111/fme.12445
  • Carroll, H.M., A.D. Wanamaker, L.G. Clark, and B.J. Wilsey. 2020. Ragweed and sagebrush pollen can distinguish between vegetation types at broad spatial scales. Ecosphere 11(5):e03120 DOI: https://doi.org/10.1002/ecs2.3120
  • Carroll, H.M., D.D. Houston, S. Ankerstjerne, and A.D. Wanamaker, Jr. 2019. Using light stable isotopes to assess stream food web ecology in a general ecology laboratory course. Journal of Biological Education. DOI: https://doi.org/10.1080/00219266.2019.1707263

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