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Featured Publications


Mercury sourcing and sequestration in weathering profiles at six Critical Zone Observatories. Richardson, Justin B., Arnulfo A. Aguirre, Heather L. Buss, A. Toby O'Geen, Xin Gu, Daniella M. Rempe, and Daniel deB. Richter (2018): Global Biogeochemical Cycles, doi: 10.1029/2018GB005974 Cross-CZO National


The formation of clay‐enriched horizons by lessivage. Calabrese, Salvatore, Daniel D. Richter, and Amilcare Porporato (2018): Geophysical Research Letters 45(15): 7588-7595


Loss of deep roots limits biogenic agents of soil development that are only partially restored by decades of forest regeneration. Billings, S.A., D. Hirmas, P.L. Sullivan, C.A. Lehmeier, S. Bagchi, K. Min, Z. Brecheisen, E. Hauser, R. Stair, R. Flournoy, D. deB. Richter (2018): Elementa Science of the Anthropocene 6(1): 34


Clays in the Critical Zone. Paul A. Schroeder (2018): Cambridge University Press Cross-CZO National


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


Influences of Native American land use on the Colonial Euro-American settlement of the South Carolina Piedmont. Coughlan, Michael R., and Donald R. Nelson (2018): PLoS ONE 13(3): e0195036


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


Historical land use dynamics in the highly degraded landscape of the Calhoun Critical Zone Observatory. Coughlan, Michael R., Donald R. Nelson, Michael Lonneman, and Ashley E. Block (2017): Land 6(2), 32


Boom and bust carbon-nitrogen dynamics during reforestation. Parolari, A.J., M.L. Mobley, A.R. Bacon, G.G. Katul, D.deB. Richter, and A. Porporato (2017): Ecological Modelling 360: 108-119


Special issue of The Earth Scientist about the Critical Zone and the US NSF Critical Zone Observatory (CZO) program. CZO Education/Outreach team (2016): The Earth Scientist, Volume XXXII, Issue 3, Fall 2016 Cross-CZO National


Geophysical imaging reveals topographic stress control of bedrock weathering. St. Clair, J., S. Moon, W. S. Holbrook, J. T. Perron, C. S. Riebe, S. J. Martel, B. Carr, C. Harman, K. Singha, D. deB. Richter (2015): Science, 30 October 2015, Vol. 350, no. 6260, pp. 534-538 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



Micro-topographic roughness analysis (MTRA) highlights minimally eroded terrain in a landscape severely impacted by historic agriculture. Brecheisen, Zachary S., Charles W. Cook, Paul R. Heine, and Daniel deB. Richter (2019): Remote Sensing of Environment 222: 78-89

Carbon and oxygen isotope composition in soil carbon dioxide within deep Ultisols at the Calhoun CZO, South Carolina, USA. Cherkinsky A., Brecheisen Z , Richter D. (2018): Radiocarbon

Unified representation of the C3, C4, and CAM photosynthetic pathways with the Photo3 model. Hartzell, Samantha, Mark S. Bartlett, and Amilcare Porporato (2018): Ecological Modelling 384: 173-187

Similarities in the evolution of plants and cars. Hartzell, Samantha, Mark Bartlett, Jun Yin, Amilcare Porporato (2018): PLoS ONE 13(6): e0198044

State dependent jump processes: Ito–Stratonovich interpretations, potential, and transient solutions. Bartlett, M.S., and A. Porporato (2018): arXiv:1807.01848

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A tale of two CZ’s: Comparing shallow and deep old-field forest regeneration at the Calhoun CZO. Brecheisen Z., Richter D., Cook C., and Heine P. (2018): Goldschmidt Conference, Boston, MA, 12-17 August 2018

Decadal restructuring of soil carbon and nitrogen in a regenerating forest on long cultivated land in the southern piedmont of the USA. Richter, Daniel, Megan Mobley, Sharon Billings, Daniel Markewitz, Anna Wade (2018): North American Forest Soils Conference – International Symposium on Forest Soils, Quebec City, Quebec, Canada, June 10-16, 2018

Detecting change over time with depth in forest soils: an example from the Calhoun Critical Zone Observatory, USA. Mobley, Megan, Kevin Nelson, Daniel Richter, Ruth Yanai (2018): North American Forest Soils Conference – International Symposium on Forest Soils, Quebec City, Quebec, Canada, June 10-16, 2018

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Biogeochemical cycling of iron and carbon in humid (sub)tropical forest soils under fluctuating redox conditions. Barcellos, Diego (2018): PhD Dissertation, Department of Crop and Soil Sciences, University of Georgia

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