Sharon Billings

Senior Scientist
Primary office:
Higuchi Hall


Dr. Billings' research characterizes the features governing nitrogen, carbon and water fluxes in terrestrial ecosystems, and how these dynamics are influenced by environmental change.

Selected Publications

Billings, S.A., Richter, D.deB., Ziegler, S.E., Prestegaard, K., Wade, A.M. 2019. Distinct contributions of eroding and depositional profiles to land-atmosphere CO2 exchange in two contrasting forests. Frontiers in Earth Science 7 doi: 10.3389/feart.2019.00036.

Min, K., Buckeridge, K., Ziegler, S.E., Edwards, K.A., Bagchi, S., Billings, S.A. 2019. Temperature sensitivity of biomass-specific microbial exo-enzyme activities and CO2 efflux is resistant to change across short- and long-term timescales. Global Change Biology 25: 1793-1807.

Brewer, T.E., Aronson, E.L., Arogyaswamy, K., Billings, S.A., Botthoff, J.K., Campbell, A.N., Dove, N.C., Fairbanks, D., Gallery, R.E., Hart, S.C., Kaye, J., King, G., Logan, G., Lohse, K.A., Maltz, M.R., Mayorga, E., O’Neill, C., Owens, S.M., Packman, A., Pett-Ridge, J., Plante, A.F., Richter, D.deB., Silver, W.L., Yang, W.H., Fierer, N. 2019. Ecological and genomic attributes of novel bacterial taxa that thrive in subsurface soil horizons. mBio 10: e01318-19.

Richter, D. D., Billings, S. A., Groffman, P. M., Kelly, E. F., Lohse, K. A., McDowell, W. H., White, T. S., Anderson, S., Baldocchi, D. D., Banwart, S. Brantley, S., Braun, J. J., Brecheisen, Z. S., Cook, C. W., Hartnett, H. E., Hobbie, S. E., Gaillardet, J., Jobbagy, E., Jungkunst, H. F., Kazanski, C. E., Krishnaswamy, J., Markewitz, D., O’Neill, K., Riebe, C. S., Schroeder, P., Siebe, C., Silver, W. L., Thompson, A., Verhoef, A., and Zhang, G.  2018.  Ideas and perspectives: Strengthening the biogeosciences in environmental research networks. Biogeosciences 15: 4815-4832. doi: 10.5194/bg-15-4815-2018.

Philben, M., Butler, S., Billings, S.A., Benner, R., Edwards, K.A., Ziegler, S.E.  2018.  Biochemical and structural controls on the decomposition dynamics of boreal upland forest moss tissues.  Biogeosciences 15: 6731-6746. doi: 10.5194/bg-15-6731-2018.

Ballantyne, F., Billings, S.A.  2018.  Model formulation of microbial CO2 production and efficiency can significantly influence short and long term soil C projections.  The ISME Journal. doi: 10.1038/s41396-018-0085-1.

Ballantyne, F., Billings, S.A.  2018.  Model formulation of microbial CO2 production and efficiency can significantly influence short and long term soil C projections.  The ISME Journal. doi: 10.1038/s41396-018-0085-1.

Billings, S.A., Hirmas, D., Sullivan, P.L., Lehmeier, C.A., Bagchi, S., Min, K., Brecheisen, Z., Hauser, E., Stair, R., Flournoy, R., Richter, D. deB.  2018.  Loss of deep roots limits biogenic agents of soil development that are only partially restored by decades of forest regeneration.  Elementa: Science of the Anthropocene 6: 34. doi: 10.1525/elementa.287.

Philben, M., Billings, S.A., Edwards, K.A., Podrebarac, F.A., van Biesen, G., Ziegler, S.E.  2018. Amino acid δ15N indicates lack of N isotope fractionation during soil organic nitrogen decomposition.  Biogeochemistry. doi: 10.1007/s10533-018-0429-y.

Ziegler, S., Benner, R., Billings, S., Edwards, K., Philben, M., Zhu, X., and Laganiere, J. 2017. Climate warming can accelerate carbon fluxes without changing soil carbon stocks. Frontiers in Earth Science. doi: 10.3389/feart.2017.00002

Billings, S., Min, K., Ballantyne, F., Chen, Y., and Sellers, M. 2016. Aging exo-enzymes can create temporally shifting, temperature-dependent resource landscapes for microbes. Biogeochemistry 131(1-2): 163-172.

Billings, S., Glaser, S., Boone, A., and Stephen, F. 2016. Nonlinear tree growth dynamics predict resilience to disturbance. Ecosphere. doi:doi:10.1890/ES15-00176.1

Lehmeier, C., Ballantyne, F., IV, Min, K., and Billings, S. 2016. Temperature-mediated changes in microbial carbon use efficiency and 13C discrimination. Biogeosciences 13: 3319-3329.

Dialynas, Y., Bastola, S., Bras, R., Billings, S., Markewitz, D., and Richter, D. 2016. Topographic variability and the influence of soil erosion on the carbon cycle. Global Biogeochemical Cycles. doi:10.1002/2015GB005302.

Billings, S., Boone, A., and Stephen, F. 2016. Tree-ring δ13C and δ18O, leaf δ13C and wood and leaf N status demonstrate tree growth strategies and predict susceptibility to disturbance. Tree Physiology, 36(5): 576-88.

Min, K., Lehmeier, C. A., F. B., IV, and Billings, S. A. 2016. Carbon availability modifies temperature responses of heterotrophic microbial respiration, carbon uptake affinity, and stable carbon isotope discrimination. Frontiers in Microbiology 7: 2083.

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I focus on global-scale perturbations (e.g., changed precipitation patterns and temperature regimes, elevated carbon dioxide, altered nitrogen availability) in an effort to predict how Earth's biogeochemical cycles--and their dependencies on each other--will function in the future. Such work is critical for understanding the atmospheric composition and ecosystem production of our planet.



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