Katerina Dontsova

Phone: 
601-868-0279
Email: 
dontsova@email.arizona.edu
Degrees/Affiliations: 
PhD, Agronomy, Purdue University, West Lafayette, IN, 2002
Title & Affiliation: 
Associate Research Professor, Biosphere 2, College of Science
Associate Research Professor (joint), Department of Soil, Water and Environmental Science

I am a soil scientist with interest in interactions between physical, chemical, and biological processes that take place in the soils. My primary focus is in soil chemistry, including dissolution, precipitation, and sorption reactions in the soils with both basic science applications including critical zone processes, mineral-organic interactions and applied research looking at fate and transport of organic contaminants and nano-particles in soils that is relevant to environmental quality.

My research in Biosphere 2 is focused on weathering processes and carbon cycling under influence of abiotic and biological factors. Specifically, we examine inorganic carbon sequestration during dissolution of basalt covering Landscape Evolution Observatory slopes and formation of spatial and temporal heterogeneity on the slopes due to its incongruent weathering. We also study biological weathering, how plants and microorganisms influence rock weathering and soil formation and how products of the weathering are compartmentalized within the ecosystem, as well as effect of climate change on these processes. I lead Biosphere 2 Biogeochemical laboratory that supports LEO and other Biosphere 2 and University of Arizona projects.

I also serve as a director of the NSF funded the Environmental and Earth Systems Research Experiences (REU) for Undergraduates Program at Biosphere. REU Website >>

Current Projects

  • Collaborative research: Coupled hydrological and geochemical process evolution at the Landscape Evolution Observatory. $486,256. National Science Foundation. 09/1/14-08/31/17. PI (Troch), Co-PIs (Niu, Dontsova, Chorover).
  • Acquisition of an instrumentation array to monitor and model land-atmosphere water, carbon and energy fluxes at the hillslope scale in the Biosphere 2 Landscape Evolution Observatory. $188,266. National Science Foundation. 09/1/14-08/31/15. PI (Troch), Co-PIs (Niu, Barron-Gafford, Tuller, van Haren, Dontsova).
  • Abiotic and biologically-driven basalt weathering and C sequestration under changing climate. $0 (ECOTRON IleDeFrance facility use time and technical support). French National Center for Scientific Research (CNSR). 05/01/14-08/31/15. PI (Dontsova), Co-PIs (van Haren, Barre, Gélabert, Daval, Pavao-Zuckerman, Niu, Meunier).
  • REU Site: The Environmental and Earth Systems Research Experiences for Undergraduates Program at Biosphere. $405,000 National Science Foundation. 01/01/13 – 12/31/15. PI (Pavao-Zuckerman), Co-PI (Dontsova).
  • Dissolution of NTO, DNAN and insensitive munitions formulations and their fates in soils. $1,350,466. DOD Strategic Environmental Research and Development Program. 3/1/12-1/31/15. PI (Dontsova), Co-PIs (Taylor, Brusseau, Pesce-Rodriguez, Simunek).
  • ETBC: Plant-microbe-mineral interaction as a driver for rock weathering and chemical denudation. $424,623. National Science Foundation. 08/01/10 – 07/31/13. PI (Dontsova), Co-PIs (Chorover, Huxman, Maier).

Past Projects

  • REU Site: Environmental and Earth Systems Research at Biosphere 2. $401,727 National Science Foundation. 01/01/10 – 12/31/12. PI (Pavao-Zuckerman), Co-PI (Dontsova).
  • Dissolution and transport of propellants in soils. $202,175. Strategic Environmental Research and Development Program. 12/16/09 - 11/22/11. PI (Dontsova), Co-PIs (Huxman, Chorover, Simunek).
  • Environmental Reactivity and Mobility of Carbon and Metal Nanoparticles in Soils. $370,000.  U.S. Army Corps of Engineers, Environmental Quality Technology Program. FY08-FY09. PI (Dontsova).
  • Perchlorate fate in soils. $120,000. U.S. Army Corps of Engineers, Environmental Quality Technology Program. FY08. PI (Dontsova), Co-PIs (Chappell, George).
  • Mechanisms of Sorption and Colloidal Transport of High Explosives in Soils. $700,000. ERDC Basic Research Program. FY06-FY08. PI (Pennington), Co-PIs (Dontsova, Simunek).

Outreach

Laboratories

Publications

2017 (Published)

CO2 diffusion into pore spaces limits weathering rate of an experimental basalt landscape . van Haren, J., Dontsova, K., Barron-Gafford, G. A., Troch, P. A., Chorover, J., Delong, S. B., Breshears, D. D., Huxman, T. E., Pelletier J. D., Saleska, S. R., Xeng, X., and Ruiz, J. (2017): Geology 45(3): 203-206.

2017 (Published)

Ecosystem Composition Controls the Fate of Rare Earth Elements during Incipient Soil Genesis . Zaharescu, D. G., Burghelea, C. I., Dontsova, K., Presler, J. K., Maier, R. M., Huxman, T., Domanik, K. J., Hunt, E. A., Amistadi, M. K., Gaddis, E. E., Palacios-Menendez, M. A., Vaquera-Ibarra, M. O. and Chorover, J. (2017): Scientific Reports 7: 43208.

2017 (Published)

Column transport studies of 3-nitro-1,2,4-triazol-5-one (NTO) in soils . Mark, N., Arthur, J., Dontsova, K., Brusseau, M., Taylor, S., Simunek, J. (2017): Chemosphere 171: 427–434.

2016 (Published)

Pore water chemistry reveals gradients in mineral transformation across a model basaltic hillslope . Pohlmann, M., Dontsova, K., Root, R., Ruiz, J., Troch, P., and Chorover, J. (2016): Geochemistry, Geophysics, Geosystems 17(6): 2054–2069.

2016 (Published)

The Effects of Rain on Elemental Transport in Soils . Schoenfeld, L.K., Hunt, E.A., Dontsova, K.M. (2016): STAR (STEM Teacher and Researcher) Program Posters.

2016 (Published)

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations . Sengupta, A. Wang, Y., Meira-Neto, A.A., Matos, K.A., Dontsova, K., Root, R., Neilson, J.W., Maier, R.M., Chorover, J., and Troch, P.A. (2016): Journal of Visualized Experiments 115: e54536.

2016 (Published)

Adsorption and attenuation behavior of 3-nitro-1,2,4-triazol-5-one (NTO) in eleven soils . Mark, N., Arthur, J., Dontsova, K., Brusseau, M., Taylor, S. (2016): Chemosphere 144: 1249–1255.

2015 (Published)

Mineral nutrient mobilization by plants from rock: influence of rock type and arbuscular mycorrhiza . Burghelea, C., Zaharescu, D. G., Dontsova, K., Maier, R., Huxman, T., Chorover J. (2015): Biogeochemistry 124(1): 187-203.

2015 (Published)

Seven Anion Comparison for the Center and West Hill Slope Systems in the Landscape Evolution Observatory (LEO) Project . Corrigan, S.C., Hunt, E.A., Dontsova, K.M. (2015): STAR (STEM Teacher and Researcher) Program Posters.

2015 (Published)

Dissolution of three insensitive munitions formulations . Taylor, S., Park, E., Bullion, K., Dontsova, K. (2015): Chemosphere 119: 342–348.

2015 (Published)

Outdoor dissolution of detonation residues of three insensitive munitions (IM) formulations . Taylor, S., Dontsova, K., Walsh, M. E., Walsh, M. R. (2015): Chemosphere 134: 250–256.

2015 (Published)

The Landscape Evolution Observatory: A large-scale controllable infrastructure to study coupled Earth-surface processes . Pangle, L.A., DeLong, S.B., Abramson, N., Adams, J., Barron-Gafford, G.A., Breshears, D.D., Brooks, P.D., Chorover, J., Dietrich, W.E., Dontsova, K., Durcik, M., Espeleta, J., Ferre, T.P.A., Ferriere, R., Henderson, W., Hunt, E.A., Huxman, T.E., Millar, D., Murphy, B., Niu, G-Y., Pavao-Zuckerman, M., Pelletier, J.D., Rasmussen, C., Ruiz, J., Saleska, S., Schaap, M., Sibayan, M., Troch, P.A., Tuller, M., van Haren, J., Zeng, X. (2015): Geomorphology 244: 190-203.

2014 (Published)

Dissolution of NTO, DNAN and Insensitive Munitions Formulations and their Fates in Soils . Dontsova, K., Taylor, S., Pesce-Rodriguez, R., Brusseau, M., Arthur, J., Mark, N., Walsh, M., Lever, J., Simunek, J. (2014): Interim Report ERDC/CRREL TR-14-23. Cold Regions Research and Engineering Laboratory, Hanover, NH, pp. 92.

2014

Monitoring and Modeling Water, Energy and Carbon Fluxes at the Hillslope Scale in the Landscape Evolution Observatory . Troch, P., Barron-Gafford, G., Dontsova, K., Fang, Y., Niu, G.-Y., Pangle, L., Tuller, M., Van Haren, J. (2014): Abstract H43L-1128 presented at 2014 Fall Meeting, AGU, San Francisco, CA, 15-19 Dec.

2014

Reactive Transport Modelling of Mineral Evolution in the Biosphere 2 Hillslope Experiment . Wu, R., Niu, G.-Y., Steefel, C., Paniconi, C., Chorover, J., Dontsova, K., Troch, P. (2014): Abstract H53A-0843 presented at 2014 Fall Meeting, AGU, San Francisco, CA, 15-19 Dec.

2014 (Published)

Impact of organic carbon on weathering and chemical denudation of granular basalt . Dontsova, K., Zaharescu, D., Henderson, W., Verghese, S., Perdrial, N., Hunt, E., Chorover, J. (2014): Geochimica et Cosmochimica Acta 139: 508–526.

2014 (Published)

Incipient subsurface heterogeneity and its effect on overland flow generation – insight from a modeling study of the first experiment at the Biosphere 2 Landscape Evolution Observatory . Niu, G.-Y., Pasetto, D., Scudeler, C., Paniconi, C., Putti, M., Troch, P. A., DeLong, S. B., Dontsova, K., Pangle, L., Breshears, D. D., Chorover, J., Huxman, T. E., Pelletier, J., Saleska, S. R., and Zeng, X. (2014): Hydrology and Earth System Sciences 18(5): 1873-1883.

2014 (Published)

Cracking the Code of Soil Genesis. The Early Role of Rare Earth Elements . Zaharescu, D., Dontsova, K., Burghelea, C., Maier, R., Huxman, T., Chorover, J. (2014): Abstract B32D-03 presented at 2014 Fall Meeting, AGU, San Francisco, CA, 15-19 Dec.

2014

Rapid CO2 consumption during incipient weathering of a granular basaltic hillslope in the Landscape Evolution Observatory, Biosphere 2 . Ruiz, J., Van Haren, J., Dontsova, K., Barron-Gafford, G., Troch, P., Chorover J. (2014): Abstract V23A-4778 presented at 2014 Fall Meeting, AGU, San Francisco, CA, 15-19 Dec.

2013

Precipitation pulse dynamics of carbon sequestration and efflux in highly weatherable soils . Barron-Gafford, G., Minor, R., Van Haren, J.L., Dontsova, K., Troch, P.A. (2013): Abstract EP13C-0879 presented at 2013 Fall Meeting, AGU, San Francisco, CA, 9-13 Dec.

2013 (Published)

Insights into the dissolution and the three-dimensional structure of insensitive munitions formulations . Taylor, S., Ringelberg, D. B., Dontsova, K., Daghlian, C. P., Walsh, M. E., Walsh, M. R. (2013): Chemosphere 93: 1782–1788.

2012 (Published)

Green leaf volatiles and oxygenated metabolite emission bursts from mesquite branches following light–dark transitions . Jardine, K., Barron-Gafford, G. A., Norman, J. P., Abrell, L., Monson, R. K., Meyers, K. T., Pavao-Zuckerman, M., Dontsova, K., Kleist, E., Werner, C., Huxman, T. E. (2012): Photosynthesis Research 113(1): 321-333.

2012 (Published)

Abiotic Factors Shape Microbial Diversity in Sonoran Desert Soils . Andrew, D. R., Fitak, R.R., Munguia-Vega, A., Racolta, A., Martinson, V. G., and Dontsova, K. (2012): Applied and Environmental Microbiology 78(21): 7527-7537.

2012 (Published)

Dissolution Rate of Propellant Energetics from Nitrocellulose Matrices . Taylor, S., Dontsova, K., Bigl, S., Richardson, C., Lever, J., Pitt J., Bradley, J.P., Walsh, M., and Simunek, J. (2012): ERDC/CRREL TR-12-9, Cold regions Research and Engineering Laboratory, Hanover, NH, pp. 117.

2011 (Published)

Twelve testable hypotheses on the geobiology of weathering . Brantley, S.L., Megonigal, J.P., Scatena, F.N., Balogh-Brunstad, Z., Barnes, R.T., Bruns, M.A., Van Cappellen, P., Dontsova, K., Hartnett, H.E., Hartshorn, A.S., Heimsath, A., Herndon, E., Jin, L., Keller, C.K., Leake, J.R., McDowell, W.H., Meinzer, F.C., Mozdzer, T.J., Petsch, S., Pett-Ridge, J., Pregitzer, K.S., Raymond, P.A., Riebe, C.S., Shumaker, K., Sutton-Grier, A., Walter, R., Yoo, K. (2011): Geobiology 9(2): 140-65.

2011 (Published)

Uptake of Cesium (Cs+) by Building Materials in Aqueous Batch Systems . Deng, B., Medina, V., Reed, C., Bednar, A., Griggs, C., Dontsova, K., and Nestler, C. (2011): Journal of Environmental Engineering 137(11): 990-995.

2009 (Published)

Dissolution and transport of 2,4-DNT and 2,6-DNT from M1 propellant in soil . Dontsova, K. M., Pennington, J. C., Hayes, C., Šimunek, J., Williford, C. W. (2009): Chemosphere 77: 597–603.

2009 (Published)

Sorption of High Explosives to Water-Dispersible Clay: Influence of Organic Carbon, Aluminosilicate Clay, and Extractable Iron . Dontsova, K.M., Hayes, C., Pennington, J.C., and Porter, B. (2009): Journal of Environmental Quality 38(4): 1458-1465.

2009 (Published)

Surfactive stabilization of multi-walled carbon nanotube dispersions with dissolved humic substances . Chappell, M.A., George, A.J., Dontsova, K.M., Porter, B.E., Price, C.L., Zhou, P., Morikawa, E., Kennedy, A.J., Steevens, J.A. (2009): Environmental Pollution 157(4): 1081-1087.

2009 (Published)

Solid phase evolution in the Biosphere 2 hillslope experiment as predicted by modeling of hydrologic and geochemical fluxes . Dontsova, K., Steefel, C.I., Desilets, S., Thompson, A., Chorover, J. (2009): Hydrology and Earth System Sciences 13: 2273-2286..