Kenny D. Hoadley, Ph.D.

Kenny D. Hoadley, Ph.D.

Senior Marine Scientist I

Assistant Professor, University of Alabama, Dept. of Biological Sciences


As an eco-physiologist, I am focused on matching physiological variability with genetic diversity of photosynthetic marine algae. Specifically, I am interested in understanding the functional diversity within symbiotic dinoflagellate algae (Symbiodiniaceae) living within the host coral tissue layer and how differences in physiology influence the host’s (coral) response to climate change. I am also interested in the physiology of free-living algal species and am utilizing a combination of cellular systems-based approaches and high-resolution physiological measurements to study the green algal lineage Micromonas; a group of globally distributed and highly productive picoeukaryotes. Whether living inhospite within a coral tissue layer or within the open ocean, understanding algal ecophysiology within the context of climate change is the focus of my research.

Ph.D., Marine Studies, University of Delaware, 2016
Postdoctoral research: Monterey Bay Aquarium Research Institute
Postdoctoral research: GEOMAR: Helmholtz Centre for Ocean Research

Visit the Hoadley Lab website here. 

Research Interest

Coral symbioses and climate change

Algal ecophysiology

Primary productivity and photosynthesis

Photo-optical properties

Gene expression

Instrument development



  • 2019

    Hoadley, K.D., A. Lewis, D. Wham, D.T. Pettay, C. Grasso, R. Smith, D. Kemp, T. Lajeunesse, M.E. Warner . Specific host–symbiont combinations dictate the response of reef-building corals to thermal stress. Scientific Reports. doi:10.1038/s41598.

  • Wilken, S., C. Yung, M. Hamilton, K. Hoadley, J. Nzongo, C. Eckmann, M. Corrochano Luque, C. Poirier, and A.Z. Worden. . Accounting for cell biology in identifying predatory mixotrophs in aquatic environments. Philosophical Transactions B. doi:10.1098/rtsb.2019.0090.

  • 2018

    Yuan X, W.J. Cai, C. Meile, B.M. Hopkinson, Q. Ding, V. Schoepf, M.E. Warner, K.D. Hoadley, B. Chen, S. Liu, H. Huang, Y. Ye, and A.G. Grottoli . Quantitative interpretation of vertical profiles of calcium and pH in the coral coelenteron. Marine Chemistry, 204, 62-69.

  • Grottoli A.G., P.D. Martins, M.J. Wilkins, M.D. Johnston, M.E. Warner, W.J. Cai, T.F. Melman, K.D. Hoadley, D.T. Pettay, X. Hu, S. Levas, and V. Schoepf. Coral physiology and microbiome dynamics under combined warming and ocean acidification. PloS one, 13(1). doi:10.1371/journal.pone.0191156.

  • 2017

    Hoadley, K.D., and M.E. Warner. Use of open-source hardware and software platforms to quantify spectrally dependent differences in photochemical efficiency and functional absorption cross-section within the dinoflagellate Symbiodinium spp. Frontiers in Marine Science, Special Issue: Coral Ecophysiology. doi:10.3389/fmars.2017.00365.

  • Schoepf V., X. Hu, M. Holcomb, W.J. Cai, Q. Li, Y. Wang, H. Xu, M.E. Warner, T.F. Melman, K.D. Hoadley, D.T. Pettay, Y. Matsui, J.H. Baumann, and A.G. Grottoli . Coral calcification under environmental change: A direct comparison of the alkalinity anomaly and buoyant weight technique. Coral Reefs, 36(1), 13–25.

  • 2016

    Cai, W.J., Y. Ma, B. Hopkinson, A.G. Grottoli, M.E. Warner, Q. Ding, X. Hu, X. Yuan, H. Xu, C. Han, V. Schoepf, T. Melman, K.D. Hoadley, D.T. Pettay, Y. Matsui, J.H. Baumann, S. Levas, Y. Ying, and Y. Wang . Microelectrode characterization of coral interior pH and carbonate chemistry. Nature Communications, (7). doi:10.1038/ncomms11144.

  • Marsh, A.G., K.D. Hoadley, and M.E. Warner . Distribution of CpG motifs in upstream gene domains in a reef coral and sea anemone: Implications for epigenetics in cnidarians. PLoS One 11(3). doi:10.1371/journal.pone.0150840.

  • Russell, B., H. Dierssen, T. Lajeunesse, K.D. Hoadley, M.E. Warner, D.W. Kemp, and T. Bateman . Spectral reflectance of palauan reef-building coral with different symbionts in response to elevated temperature. Remote Sensing, 8(3). doi:10.3390/rs8030164.

  • Hoadley, K.D., D.T. Pettay, D. Dodge, and M.E. Warner. Contrasting physiological plasticity in response to environmental stress within different cnidarians and their respective symbionts. Coral Reefs, 35(2), 529–542.

  • Hoadley, K.D., D.T. Pettay, A.G. Grottoli, W. Cai, T.F. Melman, S. Levas, V. Schoepf, X. Hu, Q. Li, H. Xu, Y. Wang, Y. Matsui, J. Baumann, and M.E. Warner. High-temperature acclimation strategies within the thermally tolerant endosymbiont Symbiodinium trenchii and its coral host, Turbinaria reniformis, differ with changing pCO2 and nutrients. Marine Biology, 163(6), 1–13.

  • Hawkins, T.D., J. Hagemeyer, K.D. Hoadley, A.G. Marsh, and M.E. Warner. Partitioning of respiratory demand in a model animal-algal symbiosis is determined by the interaction of symbiont species and biomass. Frontiers in Physiology, 128(7). doi:10.3389/fphys.2016.00128.

  • Hoadley, K.D. P. Vize, and S.J. Pyott. Current understanding of the molecular mechanisms behind cnidarian behavioral and physiological responses to natural light cycles. In: Goffredo S, Dubinsky Z. (eds) The Cnidaria, Past, Present and Future. Springer, pp511–520.

  • 2015

    Levas, S., A.G. Grottoli, M.E. Warner, W. Cai, J. Bauer, V. Schoepf, J.H. Baumann, Y. Matsui, C. Gearing, T.F. Melman, K.D. Hoadley, D.T. Pettay, X. Hu, Q. Li, H. Xu, and Y. Wang. Organic Carbon Fluxes Mediated by Corals at Elevated pCO2 and Temperature. Marine Ecology Progress Series, 519:153-164.

  • Hoadley, K.D., D.T. Pettay, A.G. Grottoli, W. Cai, T.F. Melman, V. Schoepf, X. Hu, Q. Li, H. Xu, Y. Wang, Y. Matsui, J. Baumann, and M.E. Warner. Physiological response to elevated temperature and pCO2 varies across four Pacific coral species: Understanding the unique host+symbiont response. Scientific Reports, doi:10.1038/srep18371.

  • Hoadley, K.D., D. Rollison, D.T. Pettay, and M.E. Warner. Differential carbon utilization and asexual reproduction under experimental ocean acidification in the model anemone, Exaiptasia pallida, hosting different symbionts. Limnology and Oceanography, doi:10.1002/lno.10160.

  • Leal, M.C., K.D. Hoadley, D.T. Pettay, A. Grajales, R. Calado, and M.E. Warner. Symbiont type influences trophic plasticity of a model cnidarian-algal symbiosis. Journal of Experimental Biology, 218(6), 858-863.

  • Tilney, C., K.D. Hoadley, and M.E. Warner. Comparing the diel vertical migration of Karlodinium veneficum (dinophyceae) and Chattonella subsalsa (Raphidophyceae): PSII photochemistry, circadian control, and carbon assimilation. Journal of Photochemistry and Photobiology B: Biology, 143, 107–119.

  • 2013

    Schoepf, V., A.G. Grottoli, M.E. Warner, W-J. Cai, T.F. Melman, K.D. Hoadley, D.T. Pettay, X. Hu, Q. Li, H. Xu, Y. Wang, Y. Matsui, and J.H. Baumann. Coral energy reserves and calcification in a high-CO2 world at two temperatures. PLoS One, 8(10), doi:10.1371/journal.pone.0075049.

  • 2011

    Hoadley, K.D., A. Szmant, and S. Pyott. Circadian clock gene expression in the coral Favia fragum over diel and lunar reproductive cycles. PLoS One, 6(5), doi: 10.1371/journal.pone.0019755.

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