University of Connecticut University of UC Title Fallback Connecticut

Recent Publications

2017

Brittingham, Alex, Michael T. Hren, and Gideon Hartman. “Microbial alteration of the hydrogen and carbon isotopic composition of n-alkanes in sediments.” Organic Geochemistry 107 (2017): 1-8.

Wang, C., Hren, M. T., Hoke, G. D., Liu-Zeng, J., & Garzione, C. N. (2017). Soil n-alkane δD and glycerol dialkyl glycerol tetraether (GDGT) distributions along an altitudinal transect from southwest China: Evaluating organic molecular proxies for paleoclimate and paleoelevation. Organic Geochemistry, 107, 21-32.

Royer, Dana L., and Michael T. Hren. “Carbon Isotopic Fractionation Between Whole Leaves And Cuticle.” Palaios 32.4 (2017): 199-205.

2016

Beard, J. A., Bush, A. M., Fernandes, A. M., Getty, P. R., & Hren, M. T. (2016). Stratigraphy and paleoenvironmental analysis of the Frasnian-Famennian (upper Devonian) boundary interval in Tioga, north-central Pennsylvania. Palaeogeography, Palaeoclimatology, Palaeoecology.

Carl Heron, Shinya Shoda, Adrià Breu Barcons, Janusz Czebreszuk, Yvette Eley, Marise Gorton, Wiebke Kirleis, Jutta Kneisel, Alexandre Lucquin, Johannes Müller, Yastami Nishida, Joon-ho Son & Oliver E. Craig. (2016) “First molecular and isotopic evidence of millet processing in prehistoric pottery vessels”. Scientific Reports 6, Article number: 38767

Montañez, I. P., McElwain, J. C., Poulsen, C. J., White, J. D., DiMichele, W. A., Wilson, J. P., Griggs, G., & Hren, M. T. (2016). Climate, pCO2 and terrestrial carbon cycle linkages during late Palaeozoic glacial-interglacial cycles. Nature Geoscience 9:824-828

Ouimet, W. B., Hren, M. (2016). Keck Connecticut Project: Holocene Environmental Change and Human Impacts in southern New England. Connecticut: Proceedings of the Twenty-Ninth Annual Keck Research Symposium in Geology. http://keckgeology.org/symposiumvolumes

Oakes, A., Hren, M. (2016) Temporal variations in the δD of leaf n-alkanes from four riparian plant species. Organic Geochemistry DOI information: 10.1016/j.orggeochem.2016.03.010

Eley, Y., Dawson, L., & Pedentchouk, N. (2016). Investigating the carbon isotope composition and leaf wax n-alkane concentration of C 3 and C 4 plants in Stiffkey saltmarsh, Norfolk, UK. Organic Geochemistry, 96, 28-42.

Lucquin, A., Gibbs, K., Uchiyama, J., Saul, H., Ajimoto, M., Eley, Y., Radini, A., Heron, C.P., Shoda, S., Nishida, Y. and Lundy, J., (2016). Ancient lipids document continuity in the use of early hunter–gatherer pottery through 9,000 years of Japanese prehistory. PNAS, p.201522908.

Nathan D. Sheldon, Stephen T. Grimes, Jerry J. Hooker, Margaret E. Collinson, Melanie J. Bugler, Michael T. Hren, Gregory D. Price, Paul A. Sutton, (2016) Coupling of marine and continental oxygen isotope records during the Eocene-Oligocene transition. Geological Society of America Bulletin, DOI: 10.1130/B31315.1

2015

Wilson, J.P., White, J.D., DiMichele, W.A., Hren, M.T., Poulsen, C.J., McElwain, J.C., Montañez, I.P., (2015). Reconstructing extinct plant water use for understanding vegetation–climate feedbacks: Methods, synthesis, and a case study using the Paleozoic-era medullosan seed ferns. The Paleontological Society Papers 21, 167-195.

Cotton, J., Sheldon, N., Hren, M., Gallagher, T. (2015). Positive feedback drives carbon release from soils to atmosphere during Paleocene/Eocene warming. American Journal of Science, 315(doi: 10.2475/04.2015.03), 337-361. http://www.ajsonline.org/content/current

Mulch, A., Chamberlain, C. Page, Cosca, M.A., Teyssier, C., Hren, M., Graham, S. A. (2015). Rapid change in western North American high-elevation rainfall patterns during the Middle Eocene Climatic Optimum (MECO). American Journal of Science, 315(doi: 10.2475/04.2015.03), 317-336.

Defliese, W., Lohmann, K., Hren, M. (2015). Compositional and temperature effects of phosphoric acid fractionation on Δ47 analysis and implications for discrepant calibrations. Chemical Geology, 396, 51-60.

2014

Hoke, G.D., Liu-Zheng, J., Hren, M.T., Wissink, G.K., Garzione, C.N. (2014) Stable isotopes reveal high southeast Tibetan Plateau margin since the Paleogene. Earth Planet. Sci. Lett. 394. 270-278.

2013

Lechler, A.R., Niemi, N.A., Hren, M.T., Lohmann, K.C. (2013) Paleoelevation estimates for the northern and central proto-Basin and Range from carbonate clumped isotope thermometry. Techtonics DOI: 10.1002/tect.20016

Hren, M.T., Collison, M., Grimes, S., Sheldon, N., Lohmann, K. (2013) Δ47 reconstruction of climatic and hydrologic changes across the Eocene-Oligocene boundary. PNAS 10.1073/pnas.1210930110

Dirghangi, S., Pagani, M., Hren, M.T., Tipple, B.J. (2013) Distribution of glycerol dialkyl glycerol tetraethers in soils from two environmental transects in the U.S., Organic Geochemistry 06/2013; 59(1):49-60

2012

Lin, W., Hagen, E., Fulcher, A., Hren, M.T., Augé, B. Cheng, Z. (2012) Overexpressing the ZmDof1 gene in Populus does not improve growth and nitrogen assimilation under low nitrogen conditions. Plant Cell & Tissue Culture 113, 51-61 DOI: 10.1007/s11240-012-0250-6

Hren, M.T. and Sheldon, N.D. (2012) Temporal variations in lake water temperature: Paleoenvironmental implications of lake carbonate δ18O and temperature records. Earth & Planetary Science Letters 338, 77-84.

Chamberlain, C.P., Mix, H.T., Mulch, A., Hren, M.T., Kent-Corson, M.L., Davis, S.J., Horton, T.W., Graham, S.A. (2012) The Cenozoic Climatic and Topographic Evolution of the Western North American Cordillera, American Journal of Science, DOI 10.2475/04.2011.0