ARCHIVED CONTENT: In December 2020, the CZO program was succeeded by the Critical Zone Collaborative Network (CZ Net) ×


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Featured Publications


Increasing plant water stress and decreasing summer streamflow in response to a warmer and wetter climate in seasonally snow‐covered forests. Christensen L., Adams HR, Tai X, Barnard HR, Brooks PD (2020): Ecohydrology e2256 (online) Cross-CZO


Montane forest productivity across a semiarid climatic gradient. Knowles J.F., Scott R.L., Biederman J.A., Blanken P.D., Burns S.P., Dore S., Kolb T.E., Litvak M.E., Barron‐Gafford G.A. (2020): Global Change Biology (online)


Topography influences species-specific patterns of seasonal primary productivity in a semiarid montane forest. Murphy P.C., Knowles J.F., Moore D.J.P., Anchukaitis K., Potts D.L., Barron-Gafford G.A. (2020): Tree Physiology 40(10): 1343–1354


Depth and topographic controls on microbial activity in a recently burned sub-alpine catchment. Fairbanks D., Shepard C., Murphy M., Rasmussen C., Chorover J., Rich V., Gallery R. (2020): Soil Biology and Biochemistry 148: 107844


Ecosystem carbon and water cycling from a sky island montane forest. Knowles J.F., Scott R.L., Minor R.L., Barron-Gafford G.A. (2020): Agricultural and Forest Meteorology 281: 107835


Ubiquitous Fractal Scaling and Filtering Behavior of Hydrologic Fluxes and Storages from A Mountain Headwater Catchment. Dwivedi R., Knowles J.F., Eastoe C., Minor R., Abramson N., Mitra B., Wright W.E., McIntosh J., Meixner T., Ferre P.A.T., Castro C., Niu G.-Y., Barron-Gafford G.A., Stanley M., and Chorover J. (2020): Water 12(2): 613


Critical Zone Biogeochemistry. Moravec, B. and Chorover, J. (2020): In Biogeochemical Cycles (eds K. Dontsova, Z. Balogh‐Brunstad and G. Le Roux)


Where is the bottom of a watershed?. Condon L.E., Markovich K.H., Kelleher C.A., McDonnell J.J., Ferguson G., and McIntosh J.C. (2020): Water Resources Research 56(3): e2019WR026010


Vegetation source water identification using isotopic and hydrometric observations from a subhumid mountain catchment. Dwivedi R., Eastoe C., Knowles J.F., Wright W.E., Hamann L., Minor R., Mitra B., Meixner T., McIntosh J., Ferre P.A.T., Castro C., Niu G.-Y., Barron‐Gafford G.A., Abramson N., Papuga S.A., Stanley M., Hu J., Chorover J. (2020): Ecohydrology 13(1): e2167


Resolving Deep Critical Zone Architecture in Complex Volcanic Terrain. Moravec B.G., White A.M., Root R.A, Sanchez A., Olshansky Y., Paras B.K., Carr B., McIntosh J., Pelletier J.D., Rasmussen C., Holbrook W.S., Chorover J. (2020): Journal of Geophysical Research: Earth Surface 125(1): e2019JF005189 Cross-CZO


Critical Zone Science in the Anthropocene: Opportunities for biogeographic and ecological theory and praxis to drive earth science integration. Minor J., Pearl J.K., Barnes M.L., Colella T.R., Murphy P.C., Mann S., Barron-Gafford G.A. (2020): Progress in Physical Geography: Earth and Environment 44(1): 50–69


Ecological and genomic attributes of novel bacterial taxa that thrive in subsurface soil horizons. Brewer, Tess E., Emma L. Aronson, Keshav Arogyaswamy, Sharon A. Billings, Jon K. Botthoff, Ashley N. Campbell, Nicholas C. Dove, Dawson Fairbanks, Rachel E. Gallery, Stephen C. Hart, Jason Kaye, Gary King, Geoffrey Logan, Kathleen A. Lohse, Mia R. Maltz, Emilio Mayorga, Caitlin O’Neill, Sarah M. Owens, Aaron Packman, Jennifer Pett-Ridge, Alain F. Plante, Daniel D. Richter, Whendee L. Silver, Wendy H. Yang, Noah Fierer (2019): mBio Oct 2019, 10 (5) e01318-19 Cross-CZO National


New Opportunities for Critical Zone Science. Sullivan, P.L., Wymore, A.S., McDowell, W.H. et al. (2017): 2017 CZO Arlington Meeting White Booklet Cross-CZO National


Prevalence and magnitude of groundwater use by vegetation: a global stable isotope meta-analysis. Jaivime Evaristo and Jeffrey J. McDonnell (2017): Scientific Reports 7 Cross-CZO National


Common Critical Zone Observatory (CZO) Infrastructure and Measurements. J. Chorover, S. Anderson, A. K. Aufdenkampe, R. C. Bales, S. L. Brantley, W. Dietrich, P. Kumar, K. A. Lohse, W. McDowell, D. Richter, T. White (2015): A Guide Prepared By CZO PIs, May 05, 2015 Cross-CZO National


Common questions of the US NSF–supported Critical Zone Observatories. Dietrich, W.E. and Lohse, K. (2014): A Guide Prepared By CZO PIs Cross-CZO National


Graduate Research Group White Paper: Cross-CZO Research Potential. Harpold, A.A., D. Karwan, J. Perdrial, J.A. Marshall, J. Driscoll, A. Neal, and C. Phillips (2013): Internal CZO publication Cross-CZO National



Targeting Extreme Events: Complementing Near-Term Ecological Forecasting With Rapid Experiments and Regional Surveys. Redmond M.D., Law D.J., Field J.P., Meneses N., Carroll C.J.W., Wion A.P., Breshears D.D., Cobb N.S., Dietze M.C. and Gallery R.E. (2019): Frontiers in Environmental Science 7: 183

Mountain‐Block Recharge: A Review of Current Understanding. Markovich K.H, Manning A.H., Condon L.E., McIntosh J.C. (2019): Water Resources Research 55(11): 8278-8304

Allometric relationships for Quercus gambelii and Robinia neomexicana for biomass estimation following disturbance. Krofcheck D.J., Litvak M.E., Hurteau M.D. (2019): Ecosphere 10(10): e02905

Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment. White A., Moravec B., McIntosh J., Olshansky Y., Paras B., Sanchez R.A., Ferré T.P.A., Meixner T., and Chorover J. (2019): Hydrology and Earth System Sciences 23(11): 4661-4683

Soil Fluid Biogeochemical Response to Climatic Events. Olshansky Y., Knowles J.F., Barron‐Gafford G.A., Rasmussen C., Abramson N., Chorover J. (2019): Journal of Geophysical Research: Biogeosciences 124(9): 2866-2882

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Catalina-Jemez CZO Annual Report 2019. Chorover J.D., Breshears D.D., McIntosh J.C., Pelletier J.D., Rasmussen C. (2019): University of Arizona

Catalina-Jemez CZO Annual Report 2018. Chorover J.D., Breshears D.D., McIntosh J.C., Pelletier J.D., Rasmussen C. (2018): Catalina-Jemez CZO, University of Arizona

More Reports/Proposals >

Undergrad Theses

Assessing eolian contributions to soils in the Boulder Creek Catchment, Colorado,. MacCarthy, James A. (2011): Thesis submitted in partial fulfillment of the requirements for the Degree of Bachelor of Arts With Honors in Geosciences(Williams College)

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Identifying the organic and inorganic products of incipient weathering in natural environments. Lybrand, Rebecca, Jason Austin, Rosalie Kae Chu, Odeta Qafoku, Tom Resch, Erin Rooney, Paul A Schroeder, Malak M Tfaily, Jason Toyoda, Vaithiyalingam Shutthanandan, Dragos George Zaharescu, Maya Bergmann, Benjamin Pierce, Rachel E Gallery (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019 Cross-CZO

Ice Formation and Microbes: A Microscale Perspective on Interactive Biophysical Weathering Agents in the Critical Zone. Lybrand, Rebecca, George Dragos Zaharescu, Jason Austin, Swarup China, Rachel E. Gallery, Paul A. Schroeder, Daniel Veghte, and Odeta Qafoku (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas Cross-CZO

Signatures of obliquity and eccentricity in soil chronosequences. Shepard, C, Pelletier, J.D., Schaap, M.G., Rasmussen, C. (2018): Abstract EP53F-1981 presented at 2018 AGU Fall Meeting, Washington, D.C., 10-14 Dec

More Talks/Posters >


Understanding Quaternary Soil Formation Using a Synthesis of Soil Chronosequences. Shepard C. (2018): Disertation in Soil, Water & Environmental Science. University of Arizona, Tucson, Arizona, 272 pp

Patterns of Primary Productivity in a Semiarid Montane Forest. Murphy P. (2018): MS Thesis, Geography, University of Arizona, Tucson, Arizona, 51 pp

Quantifying biomass from point clouds by connecting representations of ecosystem structure. Hendryx S.M. (2017): MS Thesis, Natural Resources, University of Arizona, Tucson, Arizona, 58 pp

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