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Trinity Hamilton

Assistant Professor


Our lab studies the functions and interactions of microorganisms in natural and engineered systems and how microbial communities respond and adapt to environmental change. We are particularly interested in life at the fringe including redox gradients and temperature extremes.  We use traditional microbiology and molecular techniques as well as next generation -omics approaches in combination with high resolution geochemical and geological data. The integration of these data results in a multidisciplinary approach to examine the in situ dynamics of microbial interactions and the affect of these interactions on local and global biogeochemical cycles. Ongoing projects in the lab include: 1) microbial primary productivity in the Proterozoic oceans; 2) the limits of chlorophototrophy (from glaciers to hot springs); 3) competitive interactions and microbial community assembly; 4) the Ecology and Physiology of toxin-producing Cyanobacteria. For more information, please visit the lab's website.

Select recent publications

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  • Hamilton, T.L., Welander, P., Albrecht, H.L., Fulton, J.M., Schaperdoth, I., Bird, L., Summons, R., Freeman, K.H., Macalady, J.L. Microbial communities and organic biomarkers in a Proterozoic-analog sinkhole environment. In Press. Geobiology. (doi: 10.1111/gbi.12252)
  • Havig, J.R., Grettenberger, C., Hamilton#, T.L. Geochemistry and microbial community composition across a range of acid mine drainage impact and implications for the Neoarchean-Paleoproterozoic transition. Journal of Geophysical Research: Biogeosciences. 122: 1404–1422. (doi:10.1002/ 2016JG003594)
  • de Beer, D., Weber, M., Chennu, A., Hamilton, T.L., Lott, C., Macalady, J.L., Klatt, J. (2017) Oxygenic and anoxygenic photosynthesis in a microbial mat from an anoxic spring, Little Salt Spring. Environmental Microbiology. 19: 1251–1265. (doi: 10.1111/1462-2920.13654)
  • Hotaling, S., Hood, E., Hamilton#, T.L. Microbial ecology of the alpine cryosphere: glaciers, subglacial environments, and meltwater streams. In press. Environmental Microbiology. (doi: 10.1111/1462-2920.13766)
  • Hamilton, T.L., Havig, J.R. (2016) Supraglacial primary productivity in glaciers on stratovolcanoes of the Pacific Northwest. In press. Geobiology. (doi:10.1111/gbi.12219)
  • Harrold, Z.R., Skidmore, M., Hamilton, T.L., Desch, L., Amada, K., van Gelder, W., Roden, E., Boyd, E.S. (2015) Aerobic and anaerobic thiosulfate oxidation by a cold-adapted, subglacial chemoautotroph. Applied and Environmental Microbiology. 82:1486-1495. (doi: 10.1128/AEM.03398-15)
  • Hamilton, T.L., Bovee R.J., Sattin S.R., Mohr, W., Gilhooly III, W.P., Lyons, Pearson, A., Macalady, J.L. (2016) Carbon and sulfur cycling below the chemocline in a meromictic lake and the identification of a novel taxonomic lineage in the FCB superphylum, Candidatus Aegiribacteria. 7: 00598. Frontiers in Microbiology. (doi: 10.3389/fmicb.2016.00598)
  • Telling, J., Boyd, E.S., Bone, N., Jones, E., Tranter, M., J.L., MacFarlane, Martin, P., Wadham, J., LaMarche-Gagnon, G., Skidmore, M.L., Hamilton, T.L., Hill, E., Jackson, M., Hodgson, D.A. (2015) Rock comminution as a source of hydrogen for subglacial ecosystems. Nature Geoscience. 8, 851–855. (doi:10.1038/ngeo2533)
  • Havig, J., McCormick, M.L., Hamilton, T.L., Kump, L.R. (2015) The behavior of biologically important trace elements across the oxic/euxinic transition of meromictic Fayetteville Green Lake, New York, USA. Geochimica et Cosmochimica Acta. 165:389-406. (doi: 10.1016/j.gca.2015.06.024)