2019

Biological Cycling of Potassium by Roots as a Control on Mixed-layer Clays. Austin, Jason, Paul A Schroeder, Daniel deB. Richter (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Length of Oxygen Exposure during Redox Oscillations Affects Rates of Iron Reduction, Anaerobic Carbon Mineralization, and Methane Emissions. Barcellos, Diego, Ashley Campbell, Jennifer Pett-Ridge, Aaron Thompson (2019): Soil Science Society of America International Soils Meeting, San Diego, CA, 6-9 January 2019

2019

Jump processes with deterministic and stochastic controls. Bartlett, Mark S., Amilcare Porporato, and Lamberto Rondoni (2019): Physical Review E 100(4), 042133

2019

Distinct contributions of eroding and depositional profiles to land-atmosphere CO2 exchange in two contrasting forests. Billings, Sharon A., Daniel de B. Richter, Susan E. Ziegler, Karen Prestegaard, and Anna M. Wade (2019): Frontiers in Earth Science 7: article 36

2019

The effect of accelerated soil erosion on hillslope morphology. Bonetti, Sara, Daniel D. Richter, Amilcare Porporato (2019): Earth Surface Processes and Landforms 44(15): 3007-3019

2019

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

2019

Development and deployment of a field-portable soil O2 and CO2 gas analyzer and sampler. Brecheisen, Zachary S., Charles W. Cook, Paul R. Heine, Junmo Ryang, Daniel deB. Richter (2019): PLoS ONE 14(8): e0220176

2019

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

2019

The Multiscale Signature of Ecohydrological Fluctuations on Soil Biogeochemical Cycles. Calabrese, Salvatore (2019): PhD dissertation, Princeton University

2019

The Dimensionless Groups of Chemical Weathering: Disentangling the Role of Hydroclimatic and Geological Factors. Calabrese, Salvatore, and Amilcare Porporato (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Impact of ecohydrological fluctuations on iron-redox cycling. Calabrese, Salvatore, and Amilcare Porporato (2019): Soil Biology and Biochemistry 133: 188-195 Cross-CZO

2019

Redoximorphic Bt horizons of the Calhoun CZO soils exhibit depth-dependent iron-oxide crystallinity. Chen, Chunmei, Diego Barcellos, Daniel D. Richter, Paul A. Schroeder, Aaron Thompson (2019): Journal of Soils and Sediments 19(2):785-797

2019

Geostatistical analysis of historical contingency and land use footprints in the prehistoric settlement dynamics of the South Carolina Piedmont, North America. Coughlan, Michael R., and Donald R. Nelson (2019): Journal of Archaeological Science 107: 1-9

2019

Hydrological spaces of long-term catchment water balance. Daly, E., S. Calabrese, J. Yin, A. Porporato (2019): Water Resources Research 55(12): 10747-10764

2019

Linking parametric and water-balance models of the Budyko and Turc spaces. Daly, Edoardo, Salvatore Calabrese, Jun Yin, and Amilcare Porporato (2019): Advances in Water Resources 134: 103435

2019

Rethinking the Development of the Piedmont Uplands of Southeastern North America: Pleistocene Age Colluvium and Organic-Rich Sediments Dating from Early MIS 3 to MIS 5. Ferguson, Terry A., Allan R Bacon, Martha C Eppes, Daniel deB. Richter, Debra A Willard, Michelle Nelson, Sharon A Billings, Jason Austin (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Dynamics of Soil Phosphorus Fractions over 60 Years of Forest Development. Foroughi, Maryam, Daniel Richter, and Daniel Markewitz (2019): Soil Science Society of America International Soils Meeting, San Diego, CA, 6-9 January 2019

2019

Modeling Phosphorus Losses and Distribution in Different Land Uses over Time. Foroughi, Maryam, John Mallard, Daniel Markewitz (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas

2019

Rooting Depths Change on a Global Scale in the Anthropocene. Hauser, Emma, Pamela L Sullivan, Sharon A Billings (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Natural, incidental, and engineered nanomaterials and their impacts on the Earth system. Hochella, Michael F., Jr., David W. Mogk, James Ranville, Irving C. Allen, George W. Luther, Linsey C. Marr, B. Peter McGrail, Mitsu Murayama, Nikolla P. Qafoku, Kevin M. Rosso, Nita Sahai, Paul A. Schroeder, Peter Vikesland, Paul Westerhoff, Yi Yang (2019): Science 363 (6434): eaau8299

2019

Seasonal and spatial variation in the potential for iron reduction in soils of the Southeastern Piedmont of the US. Hodges, Caitlin, John Mallard, Daniel Markewitz, Diego Barcellos, AaronThompson (2019): CATENA 180: 32-40

2019

Links between physical and chemical weathering inferred from a 65-m-deep borehole through Earth’s critical zone. Holbrook, W. Steven, Virginia Marcon, Allan R. Bacon, Susan L. Brantley, Bradley J. Carr, Brady A. Flinchum, Daniel D. Richter, & Clifford S. Riebe (2019): Scientific Reports 9: Article number 4495

2019

Looking up or looking down? Hydrologic and atmospheric perspectives on precipitation and evaporation variability. Jin, Y., and A. Porporato (2019): Geophysical Research Letters 46(21): 11968-11971

2019

Gradient‐based inverse estimation for a rainfall‐runoff model. Krapu, Christopher, Mark Borsuk, Mukesh Kumar (2019): Water Resources Research 55: 6625-6639

2019

Forgotten Interactions: Missing Link in the Ecohydrologic Prediction Puzzle. Kumar, Mukesh, Christopher Krapu, Yanlan Liu, Anthony Parolari, Gabriel George Katul, Amilcare M Porporato, Mark E Borsuk (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Detecting Climate-Stress Induced Forest Mortality Before the Canonical Symptoms Appear. Kumar, Mukesh, Yanlan Liu, Gabriel George Katul, Amilcare M Porporato (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Reduced resilience as an early warning signal of forest mortality. Liu, Yanlan, Mukesh Kumar, Gabriel G. Katul, & Amilcare Porporato (2019): Nature Climate Change 9: 880-885

2019

A coupled microscopy approach to assess the nano-landscape of weathering. Lybrand, Rebecca A., Jason C. Austin, Jennifer Fedenko, Rachel E. Gallery, Erin Rooney, Paul A. Schroeder, Dragos G. Zaharescu, & Odeta Qafoku (2019): Scientific Reports 9: Article number 5377 Cross-CZO

2019

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

2019

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

2019

Storage volume and depth drives runoff generation in a deep and highly weathered headwater watershed. Mallard, John McDevitt, Brian L McGlynn, Daniel deB. Richter (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

The Calhoun Critical Zone Observatory: historic hydrologic research in a complex socio-environmental context reinvigorated and expanded by critical zone science. Mallard, John McDevitt, Margaret A Zimmer, Daniel deB. Richter, Brian L McGlynn (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Soil C Spatial Variance within Soil Profile Pit Faces Under Three Land Uses As Measured By VNIRS. Markewitz, D., L. Sutter, D. Richter (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas

2019

How to estimate statistically detectable trends in a time series: A study of soil carbon and nutrient concentrations at the Calhoun LTSE. Mobley, M.L., Y. Yang, R.D. Yanai, K.A. Nelson, A.R. Bacon, P.R. Heine, and D.D. Richter (2019): Soil Science Society of America Journal 83(s1): S133-S140

2019

Modelling the effects of climate-responsive soil parameters on continental-scale hydrologic stores and fluxes in the Community Land Model (CLM) 50. Nash, Caroline, Alejandro N Flores, Pamela L Sullivan, Daniel Hirmas, Sharon A Billings, Li Li, Hang Wen (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

What is soil? An integrative exploration of a Critical material. Nelson, Donald R, Michael R Coughlan, Amilcare M Porporato, Daniel deB. Richter (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Land use trajectories: an empirical analysis of smallholders and the forest transition in the South Carolina Piedmont. Nelson, Donald, and Michael Coughlan (2019): Society for Applied Anthropology Annual Meeting, Portland, OR, March 19-23, 2019

2019

Bioavailability of carbon in ferrihydrite-organic matter coprecipitates transformed by Fe (II)-catalyzed recrystalization. Noor, Nadia, Aaron Thompson, Zhe Zhou, Drew E. Latta, Michelle M. Scherer, Alain F. Plante, and Thomas Borch (2019): Soil Science Society of America International Soils Meeting, San Diego, CA, 6-9 January 2019

2019

Dynamic evolution of the soil pore size distribution and its connection to soil management and biogeochemical processes. Pelak, Norman, and Amilcare Porporato (2019): Advances in Water Resources 131, 103384

2019

Scaling and dynamics of surface elevation in terrestrial landscape evolution. Porporato, A.M., M. Hooshyar, S.K. Anand (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Calhoun CZO Annual Report 2019. Richter, D., Kumar, M., McGlynn, B.L., Palmorth, S., Porporato, A. (2019): NSF Award #1331846

2019

Soil Production and the Soil Geomorphology Legacy of GK Gilbert. Richter, Daniel (2019): Soil Science Society of America International Soils Meeting, San Diego, CA, 6-9 January 2019

2019

The Soil and Critical Zone Clay Factory: How Rock Weathers to Clay and Clay-Sized Minerals. Richter, Daniel deB. (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

How to Estimate Statistically Detectable Trends in a Time Series: A Study of Soil Carbon and Nutrient Concentrations at the Calhoun LTSE (Invited). Richter, Daniel deB., Megan L. Mobley, Yang Yang, Kevin A. Nelson, Allan R Bacon, Paul Heine (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Erosional redistribution of surface soil: How has changing depth to the argillic altered hillslope interflow. Ryland, R., D Radcliffe, A Thompson, and D Markewitz (2019): Soil Science Society of America International Soils Meeting, San Diego, CA, 6-9 January 2019

2019

Quantification of mixed‐layer clays in multiple saturation states using NEWMOD2: Implications for the potassium uplift hypothesis. Schroeder, Paul A., Daniel D. Richter, and Jason C. Austin (2019): EuroClay 2019, Paris, France, 1-5 July 2019

2019

On the role of spatial resolution on snow estimates using a process‐based snow model across a range of climatology and elevation. Sohrabi, Mohammad M., Daniele Tonina, Rohan Benjankar, Mukesh Kumar, Patrick Kormos, Danny Marks, Charlie Luce (2019): Hydrological Processes 33: 1260-1275

2019

Do we need to account for dynamic changes in subsurface plumbing to project blue water stocks and fluxes?. Sullivan, Pamela L, Sharon A Billings, Daniel Hirmas, Li Li, Alejandro N Flores, Matthew G Sena, Hang Wen, Morgan Okeson, Caroline Nash, Ligia Souza, Kyler Lang (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Controls of iron abundance and crystallinity on organomineral associations under contrasting long-term land use. Thompson, Aaron, Elizabeth K Coward, Daniel Markewitz, Daniel deB. Richter, Allan R Bacon, Alain F Plante (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Saturated but Not Yet Suffocated: Seasonal Oxidation-Reduction Dynamics in Southern Piedmont Floodplains. Wade, Anna, Daniel Richter (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas

2019

Soil Carbon Stocks and Soil Moisture Regimes of Historic Sedimentation in the Southern Piedmont. Wade, Anna, Daniel Richter, Alex Cherkinsky and Paul Heine (2019): Soil Science Society of America International Soils Meeting, San Diego, CA, 6-9 January 2019

2019

Atmospheric Vs Geogenic: Using Long-Term Soil Experiments to Delineate between Lead (Pb) Sources in the Southern Piedmont. Wade, Anna, Daniel Richter, and Paul Heine (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas

2019

Tree Phosphorus Uptake from Argillic and Saprolite Horizons in a Weathered Ultisol in the Calhoun Critical Zone Observatory, USA. Wang, Z., A. Thompson, L. Sutter, and D. Markewitz (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas

2019

The energy side of Budyko: Surface‐energy partitioning from hydrological observations. Yin, Jun, Salvatore Calabrese, Edoardo Daly, and Amilcare Porporato (2019): Geophysical Research Letters 46: 7456-7463

2019

Observations of Water, Energy and CO2 Fluxes at Calhoun Critical Zone Observatory. Zhu, Modi, Yao Tang, Jingfeng Wang, Daniel Markewitz, Rafael L Bras, Weiqiang Jing (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019

2019

Intercomparing varied erosion, deposition and transport process representations for simulating sediment yield. Zi, Tan, Mukesh Kumar, and John Albertson (2019): Scientific Reports 9, Article number: 12029

2018

Modifications of 2:1 clay minerals in a kaolinite dominated Ultisol under changing land-use regimes. Austin, Jason C., Amelia Perry, Daniel D. Richter, and Paul A. Schroeder (2018): Clays and Clay Minerals 66(1): 61-73

2018

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 Cross-CZO

2018

Faster redox fluctuations can lead to higher iron reduction rates in humid forest soils. Barcellos, Diego, K. Taylor Cyle, Aaron Thompson (2018): Biogeochemistry 137 (3): 367-378 Cross-CZO

2018

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

2018

A class of exact solutions of the Boussinesq equation for horizontal and sloping aquifers. Bartlett, M.S., and A. Porporato (2018): Water Resources Research 54 (2): 767-778

2018

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

2018

Carbon isotopes reveal signals of the Anthropocene in soil carbon pools deep within the critical zone. Billings, S.A., Z.S. Brecheisen, A. Cherkinsky, C.W. Cook, C. Lehmeier, D. deB. Richter (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

On the theory of drainage area for regular and non-regular points. Bonetti, S., A.D. Bragg, A. Porporato (2018): Proceedings of the Royal Society A 474: 20170693

2018

Analysis and Modeling of Landscape Topography: Statistical Description and Evolution Under Natural and Disturbed Conditions. Bonetti, Sara (2018): PhD Dissertation, Duke University, Durham, North Carolina

2018

Impact of climate-vegetation interactions on natural and disturbed landscape evolution: insights from the Calhoun Critical Zone Observatory. Bonetti, Sara; Ferguson, Terry; Richter, Daniel; Porporato, Amilcare (2018): European Geosciences Union General Assembly, 4-13 April, 2018, Vienna, Austria

2018

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

2018

Time-series measurements of deep soil profile O2, CO2, soil moisture, and aboveground precipitation highlight differential rooting across landuse history treatments at the Calhoun Critical Zone Observatory. Brecheisen, Z.S., D. deB. Richter, C.W. Cook, P. Heine, J. Austin (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Evaluating the effect of nutrient redistribution by animals on the phosphorus cycle of lowland Amazonia. Buendía, Corina, Axel Kleidon, Stefano Manzoni, Björn Reu, and Amilcare Porporato (2018): Biogeosciences 15: 279-295

2018

Ecohydrological controls on iron redox fluctuations. Calabrese, Salvatore, and Amilcare M. Porporato (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

A dynamical system approach to soil iron and carbon cycles. Calabrese, Salvatore, and Amilcare Porporato (2018): European Geosciences Union General Assembly, 4-13 April, 2018, Vienna, Austria

2018

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

2018

The shovel – a surprisingly effective, but often overlooked tool for soil biodiversity discovery. Callaham, M.A., Jr., R. Carrera-Martínez, S.W. James, B.A. Snyder, and M.K. Taylor (2018): Ecological Society of America Annual Meeting, August 5-10, 2018, New Orleans, Louisiana

2018

Petrography of the gneisses from the Mary Lou Quarry in Clinton, SC: Implications for quantifying mineral compositions in the critical zone. Cannida, Tyler (2018): Center for Undergraduate Research Opportunities (CURO) Symposium, University of Georgia, Athens, 9 April 2018

2018

Opening a can of worms: Uncovering the diversity of native semiaquatic earthworms from the Southern Appalachian Piedmont of the US. Carrera-Martínez, R., M.K. Taylor, and M.A. Callaham, Jr. (2018): Ecological Society of America Annual Meeting, August 5-10, 2018, New Orleans, Louisiana

2018

Distribution and diversity of semiaquatic Sparganophilidae earthworms in the Southern Appalachian Piedmont, USA. Carrera-Martínez, Roberto (2018): MS Thesis, University of Georgia

2018

Ferrous iron oxidation under varying pO2 levels: The effect of Fe(III)/Al(III) oxide minerals and organic matter. Chen, Chunmei, and Aaron Thompson (2018): Environmental Science & Technology 52 (2): 597–606

2018

Influence of pO2 on iron redox cycling and anaerobic organic carbon mineralization in a humid tropical forest soil. Chen, Chunmei, Christof Meile, Jared Wilmoth, Diego Barcellos, and Aaron Thompson (2018): Environmental Science & Technology 52 (14): 7709-7719 Cross-CZO

2018

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 60(5): 1357-1366

2018

Distribution of 14C and 137 Cs in the profile of Ultisol, Calhoun CZO. Cherkinsky, Alexander, Ravi Prasad, Daniel Richter, Hai Pan (2018): International Radiocarbon Conference, June 17-22, 2018, Trondheim, Norway

2018

Gone with the witness tree: A reconstruction of historical forest cover change in the South Carolina Piedmont ca 1790-1940 using metes and bounds survey witness trees. Coughlan, M., D.R. Nelson, and M. Lonneman (2018): American Association of Geographers Annual Meeting, New Orleans, April 10-14, 2018

2018

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

2018

The relative sensitivity of forest productivity to landscape position vs microtopography. Ghasemian, S., J. Kastens, S.A. Billings (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Application of the maximum entropy production model of evapotranspiration over partially vegetated water-limited land surfaces. Hajji, I., D. F. Nadeau, B. Music, F. Anctil, and J. Wang (2018): Journal of Hydrometeorology 19: 989-1005

2018

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

2018

Tree carbon investments and soil phosphorus dividends: How do rooting systems maximize P acquisition while being thrifty with their carbon?. Hauser, E., D. deB. Richter, S.A. Billings (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Potential for iron reduction increases with rainfall in montane basaltic soils of Hawaii. Hodges, C., E. King, J. Pett-Ridge, A. Thompson (2018): Soil Science Society of America Journal 82:176-185 Cross-CZO

2018

Changes in clay mineral assemblages of legacy sediments in the Calhoun Critical Zone Observatory, SC: Evidence for anthropogenic landscape change. Jordan, Bear (2018): Center for Undergraduate Research Opportunities (CURO) Symposium, University of Georgia, Athens, 9 April 2018

2018

Examining the Role of Organic Compounds and Secondary Minerals on Ga/Al Fractionation in the Critical Zone. Justin B. Richardson*, Benjamin W. Kumpf, and Louis A. Derry (2018): Abstract 12c:345 presented at 2018 Goldschmidt Meeting, Boston, MA 12-17 August Cross-CZO

2018

Synergistic data analytics and physical modeling for improved understanding of vegetation dynamics under climatological stress: a key uncertainty in ecosystem management. Liu, Y., M. Kumar, G.G. Katul, A. Parolari, A.M. Porporato, C.-W. Huang, A. Konings (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Reduced resilience as a potential early warning signal of forest mortality. Liu, Y., M. Kumar, G.G. Katul, and A. Porporato (2018): Ecological Society of America Annual Meeting, August 5-10, 2018, New Orleans, Louisiana

2018

Terrain and subsurface influences on runoff generation and storage dynamics in a steep, deep, highly weathered landscape. Mallard, J.M., B.L. McGlynn, D.deB. Richter (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

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

2018

Anthropogenic drivers and the reconstruction of historical forest cover change in the South Carolina Piedmont ca 1790-1940. Nelson, D.R., M.R. Coughlan, and M. Lonneman (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

The ecohydrological cost of lawns. Pelak, Norman F., and Amilcare Porporato (2018): American Geophysical Union Fall Meeting, Washington, DC, December 10-14, 2018

2018

Agricultural risk management under climate variability: the role of crop diversification. Porporato, Amilcare M., Samantha R Hartzell, Mark S Bartlett (2018): American Geophysical Union Fall Meeting, Washington, DC, December 10-14, 2018

2018

Ecohydrological model for the quantification of ecosystem services provided by urban street trees. Revelli, Roberto, and Amilcare Porporato (2018): Urban Ecosystems 21(3): 489-504

2018

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, 32(10):1542-1555 Cross-CZO National

2018

Calhoun CZO Annual Report 2018. Richter, D., Kumar, M., McGlynn, B.L., Palmorth, S., Porporato, A. (2018): NSF Award #1331846

2018

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

2018

GK Gilbert: A Life in Science for the Commonstock (Invited). Richter, Daniel deB. (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Why the history of geoscience is relevant in the Anthropocene: The case of GK Gilbert . Richter, Daniel deB. (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Strengthening the biogeosciences in environmental research networks (Invited). Richter, Daniel deB. (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

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

2018

The fate of degraded biotites in the deep critical zone: Implications for the K-uplift hypothesis. Sanders, Sophia Chason (2018): Center for Undergraduate Research Opportunities (CURO) Symposium, University of Georgia, Athens, 9 April 2018

2018

Simultaneously quantifying ferrihydrite and goethite in natural sediments using the method of standard additions with X-ray absorption spectroscopy. Sun, J., Mailloux, B.J., Chillrud, S.N., van Geen, A., Thompson A., & Bostick, B.C. (2018): Chemical Geology 476: 248-259

2018

Evolution of energy, water and carbon cycles due to land-use change at Calhoun Critical Zone. Tang, Yao, and Jingfeng Wang (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018

2018

Short-range-ordered (SRO) iron minerals are dynamic, emergent representations of recent environmental conditions in soils . Thompson, Aaron (2018): American Geophysical Union 2018 Fall Meeting, Washington, DC, 10-14 Dec 2018 Cross-CZO

2018

Using nested discretization for a detailed yet computationally efficient simulation of local hydrology in a distributed hydrologic model. Wang, Dongdong, Yanlan Liu, and Mukesh Kumar (2018): Scientific Reports 8: Article number 5785

2018

Retrieval of Friction Velocity from Sensible Heat Flux Parameterized Using MEP Model over Land Surfaces (invited). Wang, J., Y. Tang, and Y. Deng (2018): American Geophysical Union Fall Meeting, Washington, DC, December 10-14, 2018

2018

Reinforcement of climate hiatus by decadal modulation of daily cloud cycle. Yin, Jun, and Amilcare Porporato (2018): arXiv:1803.01752

2018

Radiative effects of daily cloud cycle: general methodology and application to cloud fraction. Yin, Jun, and Amilcare Porporato (2018): arXiv:1803.01742

2017

Growing new generations of critical zone scientists. Wymore, Adam S., Nicole R. West, Kate Maher, Pamela L. Sullivan, Adrian Harpold, Diana Karwan, Jill A. Marshall, Julia Perdrial, Daniella M. Rempe and Lin Ma (2017): Earth Surface Processes and Landforms 42 (14): 2498-2502 Cross-CZO National

2017

An exploration of pore structure through MicroCT scans: Mathematical metrics of individual pore structure. Arroyo, Eva (2017): Poster presentation, REU in Basic and Environmental Soil Science Training, North Carolina State University, July 2017

2017

Clay mineral alterations in response to land-use change in the kaolinite dominated residual soil of the Calhoun Critical Zone Observatory. Austin, J.C.; Schroeder, P.A.; Perry, A. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017

2017

Field measurements of soil iron and carbon cycling during spring warm-up in an aggrading pine forest at the Calhoun CZO. Barcellos, D, C Hodges, D Markewitz, E. Ardington, and A Thompson (2017): Soil Science Society of America International Annual Meeting, Tampa, FL, 22-25 Oct. 2017

2017

Hot spots and hot moments for redox, iron and carbon cycling in soils across Luquillo and Calhoun CZOs. Barcellos, D., and Thompson, A. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017 Cross-CZO

2017

Drivers of redox, iron and carbon in soils from the Calhoun CZO. Barcellos, Diego, Dan Markewitz, Caitlin Hodges, Aaron Thompson (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Rainfall-runoff response informed by exact solutions of Boussinesq equation on hillslopes. Bartlett, M. S., Jr.; Porporato, A. M. (2017): American Geophysical Union 2017 Fall Meeting, 11-15 Dec. 2017, New Orleans, LA

2017

Hydrological/landscape modeling of CCZO. Bastola, Satish, and Cheng Yao (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Deep and persistent consequences of long-term changes in land cover. Billings, S.A., Richter, D.D., Sullivan, P.L., Lehmeier, C.A., Bagchi, S., Min, K., Hauser, E., Stair, R., Flournoy, R. (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC

2017

Soil biogeochemistry reveals the importance of deep roots as biotic controls of CZ evolution: a belowground analog to Ruddiman’s hypothesis. Billings, S.A., Sullivan, P.L., Richter, D.D., Lehmeier, C.A., Min, K., Bagchi, S., Flournoy, R., Hauser, E. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017

2017

Soil weathering agents are limited where deep tree roots are removed, even after decades of forest regeneration. Billings, Sharon A, Daniel deB. Richter, Daniel Hirmas, Christoph Lehmeier, Samik Bagchi, Zachary Brecheisen, Pamela L Sullivan, Kyungjin Min, Emma Hauser, Rena Stair, Rebecca Flournoy (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Topographic controls on vegetation patterns. Bonetti, S., and Porporato, A. (2017): SIAM Conference on Applications of Dynamical Systems, Snowbird, UT, 21-25 May 2017

2017

On the dynamic smoothing of mountains. Bonetti, S., and Porporato, A. (2017): Geophysical Research Letters 44(11): 5531-5539

2017

Forward and backward evolution of the Calhoun CZO: the effect of natural and anthropogenic disturbances. Bonetti, S.; Porporato, A. M. (2017): American Geophysical Union 2017 Fall Meeting, 11-15 Dec. 2017, New Orleans, LA

2017

Designing a network of critical zone observatories to explore the living skin of the terrestrial Earth. Brantley, S.L., McDowell, W.H., Dietrich, W.E., White, T.S., Kumar, P., Anderson, S., Chorover, J., Lohse, K.A., Bales, R.C., Richter, D., Grant, G., and Gaillardet, J. (2017): Earth Surface Dynamics, 5, 841–860 Cross-CZO National

2017

Ordering interfluves: quantifying critical zone landscape structure and function. Brecheisen, Zachary S., Seulgi Moon, Patrick Halpin, Daniel deB. Richter (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017

2017

Landuse legacies of old-field succession and soil structure at the Calhoun Critical Zone Observatory in SC, USA. Brecheisen, Zachary Scott, Daniel deB. Richter, Mac Callaham, Roberto Carrera-Martinez, Paul Heine (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Old-field succession: Land-use legacies and below-ground respiration. Brecheisen, Zachary, Daniel Richter, Will Cook, Paul Heine (2017): Ecological Society of America Annual Meeting, Portland, OR, 6-11 August 2017

2017

Regeneration of critical zone structure: Macroporosity and soil gasses in old-field forest soils of the southeastern US. Brecheisen, Zachary, Mac A. Callaham Jr., Daniel deB. Richter (2017): Soil Science Society of America International Annual Meeting, Tampa, FL, 22-25 Oct. 2017

2017

Ordering interfluves: an analytical framework for hierarchical patterns in landscape structure and function. Brecheisen, Zachary, Seulgi Moon, Daniel Richter, Patrick Halpin (2017): American Association of Geographers Annual Meeting, Boston, MA, 7 April 2017

2017

Multiple outflows, spatial components, and nonlinearities in age theory. Calabrese, S., and Porporato, A. (2017): Water Resources Research, 53 (1): 110-126

2017

Hydrologic transport of dissolved inorganic carbon and its control on chemical weathering. Calabrese, S., Porporato, A., and Parolari, A.J. (2017): Journal of Geophysical Research: Earth Surface 122 (10): 2016-2032

2017

Stochastic dynamics of clay translocation and formation of argillic horizons. Calabrese, Salvatore, Daniel deB. Richter, Amilcare M Porporato (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Impact of stochastic bioturbation and transport on the formation of argillic horizons. Calabrese, Salvatore, Daniel Richter, Amilcare Porporato (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Hydrologic controls on chemical weathering in the Critical Zone. Calabrese, Salvatore, Tony Parolari, Amilcare Porporato (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Past, present and future earthworm-related research at the Calhoun CZO. Callaham, Mac, Roberto Carrera-Martínez, Zach Brecheisen, Melanie Taylor, Dan Markewitz, and Dan Richter (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Insights into the base of the critical zone from geophysical logging and groundwater flow testing at US Critical Zone Observatories (CZO) and critical zone study sites (CZs). Carr, Bradley, Ye Zhang, Shuangpo Ren, Brady A Flinchum, Andrew Parsekian, W Steven Holbrook, Clifford S Riebe, Bryan G Moravec, Jon Chorover, Jon D Pelletier, Daniel deB. Richter (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017 Cross-CZO

2017

The impact of O2 concentrations and organic matter on Fe(II) oxidation and the resulting Fe(III) solids in the presence of Fe/Al oxide sorbents. Chen, C., and Thompson, A. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017

2017

Iron reduction potential in upland soils in CCZO. Chen, Chunmei, Nadia Noor, Diego Barcellos, Caitlin Hodges, and Aaron Thompson (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Understanding the Role of Model Structure and Watershed Properties on Streamflow Response. Chen, Xing (2017): PhD Dissertation, Duke University, Durham, North Carolina

2017

Impact of gullying on hillslope hydrology at the Calhoun Critical Zone Observatory. Chen, Xing, Mukesh Kumar, Daniel deB. Richter, Yair Mau (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

On the effectiveness of recession analysis methods for capturing the characteristic storage-discharge relation: An intercomparison study. Chen, Xing, Mukesh Kumar, Stefano Basso, Marco Marani (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

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. (2017): 2nd International Radiocarbon in the Environment Conference, Debrecen, Hungary, 3-7 July 2017

2017

AMS and IRMS studies of different soil organic matter fractions in Ultisol profiles, Calhoun CZO, South Carolina USA. Cherkinsky, A., G.V.R. Prasad, H. Pan, D. Richter (2017): 14th International Conference on Accelerator Mass Spectrometry, Ottawa, Canada

2017

Estimation of soil respiration rates and soil gas isotopic composition for the different land use of Ultisols from Calhoun CZO. Cherkinsky, Alexander, Zachary Brecheisen, Daniel deB. Richter, Hong Sheng (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Update on tree age distribution at the Calhoun CZO. Cook, C.W. (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Historical landuse 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): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

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

2017

Soil organic matter stabilization by Fe-C interactions in temperate and tropical soils: A cross-CZO comparison. Coward, E.K., Thompson, A., and Plante, A.F. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017 Cross-CZO

2017

Influence of Linked Hydrologic and Geomorphic Processes on the Terrestrial Carbon Cycle. Dialynas, Ioannis Minas (Yannis) (2017): Doctoral dissertation, School of Civil and Environmental Engineering, Georgia Institute of Technology Cross-CZO

2017

Hydro-geomorphic perturbations on the soil-atmosphere CO2 exchange: How (un)certain are our balances?. Dialynas, Y. G., R. L. Bras, and D. deB. Richter (2017): Water Resources Research 53(2): 1664-1682

2017

Hydrologic drivers of soil organic carbon erosion and burial: Insights from a spatially-explicit model of a degraded landscape at the Calhoun Critical Zone Observatory. Dialynas, Yannis G., Rafael L. Bras, Daniel deB. Richter (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Implications of 1930s Piedmont research by the Soil Conservation Service for the Calhoun CZO. Ferguson, Terry A. (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Soil Phosphorous redistribution in the Calhoun CZO. Foroughi, M., and D. Markewitz (2017): Warnell Graduate Student Symposium, University of Georgia, Athens, GA

2017

Soil Phosphorus distribution in contrasting land-use history. Foroughi, Maryam, and Daniel Markewitz (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Soil phosphorus distributions in the Calhoun CZO landscape. Foroughi, Maryam, Lori Sutter, and Daniel Markewitz (2017): Soil Science Society of America 2017 Annual Meeting

2017

The view from Rose Hill: Landscape and memory in the Piedmont. Giesen, James C. (2017): Southern Forum on Agricultural, Rural, and Environmental History, Rice University, February, 2017

2017

Illuminating pathways of forest nutrient provision: relative release from soil mineral and organic pools. Hauser, Emma, and Sharon A Billings (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017 Cross-CZO

2017

Water and carbon influence the distribution of iron reduction at the Calhoun CZO. Hodges, C., Mallard, J., Markewitz, D., and Thompson, A. (2017): University of Georgia Plant and Soil Symposium, Athens, GA

2017

Seasonal variation of Fe reduction at the Calhoun CZO. Hodges, Caitlin, John Mallard, Dan Markewitz, Aaron Thompson (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Revisiting the global surface energy budgets with maximum-entropy-production model of surface heat fluxes. Huang, S.-Y., Y. Deng, and J. Wang (2017): Climate Dynamics 49 (5-6): 1531-1545

2017

Increasing atmospheric humidity and CO₂ concentration alleviate forest mortality risk. Liu, Yanlan, Anthony J. Parolari, Mukesh Kumar, Cheng-Wei Huang, Gabriel G. Katul, and Amilcare Porporato (2017): PNAS 114 (37): 9918-9923

2017

Increasing atmospheric humidity and CO₂ concentrations alleviate forest mortality risk. Liu, Yanlan, Anthony Parolari, Mukesh Kumar, Cheng-Wei Huang, Gabriel Katul, Amilcare Porporato (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Detection of early warning signals of forest mortality in California. Liu, Yanlan, Mukesh Kumar, Gabriel George Katul, Amilcare M Porporato (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Reorganizing land and labor: Exploring agricultural land use change in the postbellum South Carolina Piedmont using an agent-based model. Lonneman, M. (2017): Integrative Research and Ideas Symposium, University of Georgia, Athens, GA

2017

From slavery to wage labor: Livelihood change and land use transitions in the US Piedmont, 1850-1880. Lonneman, M. (2017): Society for Applied Anthropology annual meeting, Santa Fe, NM

2017

Cross-scale perspectives on mineral weathering in the Critical Zone (Invited Presentation). Lybrand, Rebecca, Jason Austin, Paul A. Schroeder, Dragos Zaharescu, Rachel Gallery (2017): Geological Society of America Annual Meeting, Seattle, WA, 22-25 October, 2017 Cross-CZO

2017

Terrain and subsurface influences on runoff generation in a steep, deep, highly weathered system. Mallard, John McDevitt, Brian L McGlynn, Daniel deB. Richter (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Subsurface, terrain, and anthropogenic influences on shallow groundwater dynamics in deep soil landscapes. Mallard, John, Brian McGlynn, and Daniel Richter (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Subsurface and terrain controls on runoff generation in deep soil landscapes. Mallard, John, Brian McGlynn, and Daniel Richter (2017): European Geosciences Union General Assembly 2017, Vienna, Austria, 23–28 April 2017

2017

Patterns in soil electrical resistivity across land uses in the Calhoun Critical Zone Observatory landscape. Markewitz, Daniel, Lori Sutter, Daniel deB. Richter (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Estimating soil erosion potential at the Calhoun Critical Zone Observatory using a spatially-explicit RUSLE model. Martin C., K.P. O’Neill (2017): Virginia GIS/LIS Conference. Blacksburg VA, April 5, 2017

2017

Iron cycling under oscillatory redox conditions: from observations to processes (Invited). Meile, Christof D, Chunmei Chen, Diego Barcellos, Jared Wilmoth, Aaron Thompson (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Land use legacies in the Calhoun CZO: The implications of human behavior for Critical Zone processes. Nelson, Donald R., Daniel D. Richter Jr., Michael Coughlan, Michael Lonneman, Zachary Brecheisen (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Integration of fuzzy logic and image analysis for the detection of gullies in the Calhoun Critical Zone Observatory using airborne LiDAR data. Noto, L. V., S. Bastola, Y. G. Dialynas, E. Arnone, and R. L. Bras (2017): ISPRS Journal of Photogrammetry and Remote Sensing 126: 209-224

2017

Cultivating a sense of place in the southern Piedmont using Esri Story Maps. O'Neill, Katherine P., Jane F. Rice, and Daniel deB Richter (2017): In The Trenches, Volume 7, Oct 2017

2017

Water resources and the Earth’s critical zone: Diving below the surface to reach far across the standards. O’Neill K.P., T. Poelzing (2017): Virginia Environmental Education Conference, Virginia Environmental Education Association, Front Royal, VA, Oct. 11, 2017

2017

Digging deep within the Earth’s critical zone to reach across the disciplines. O’Neill KP, T. Poelzing (2017): Copenhaver Institute "21st century skills: Inspiring creativity in the classroom", Salem VA, June 2017

2017

Exploring landscape processes in South Carolina's southern piedmont using data from the Calhoun Critical Zone Observatory. O’Neill, K.P., D. DeB. Richter (2017): South Carolina Science Council, Nov. 10, 2017

2017

Fine earth aggregates and aggregating particles at the Calhoun Critical Zone Observatory. Pachon, Julio Cesar, Allan Roy Bacon, Daniel deB. Richter (2017): Soil Science Society of America International Annual Meeting, Tampa, FL, 22-25 Oct. 2017

2017

A new way to look at soil aggregation and aggregating particles: What laser diffraction tells us. Pachon, Julio, Allan Bacon, Kayci Kowalski, and Joshua Butterick, Dan Richter, Aaron Thompson, Madison K. Akers, Joshua Cucinella, Rosvel Bracho-Garrillo, John M. Davis, Sabine Grunwald, Eric J Jokela, Michael Kane, Marshall A. Laviner, Daniel Markewitz, Timothy Martin, Gary F. Peter, C. Wade Ross, and Jason G. Vogel (2017): Southeastern Biogeochemistry Symposium, Athens, GA, 31 March-2 April 2017

2017

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

2017

Impact of seasonal variability in water, plant and soil nutrient dynamics in agroecosystems. Pelak, N. F., III; Revelli, R.; Porporato, A. M. (2017): American Geophysical Union 2017 Fall Meeting, 11-15 Dec. 2017, New Orleans, LA

2017

A dynamical systems framework for crop models: Toward optimal fertilization and irrigation strategies under climatic variability. Pelak, Norman, Roberto Revelli, and Amilcare Porporato (2017): Ecological Modelling 365: 80-92

2017

Developing a "sense of place": Exploring the Earth's critical zone using ESRI Story Maps. Rice J., and K.P. O'Neill (2017): Virginia STEM Conference: Inspiring teachers, Lexington VA, Oct. 4, 2017

2017

Mercury in soils of the Calhoun Critical Zone Observatory: Importance of redox features in sequestration. Richardson, J.B. and D. deB. Richter (2017): Soil Science Society of America International Annual Meeting, Tampa, FL, 22-25 Oct. 2017

2017

Annual Report 2017: Human and Natural Forcings of Critical Zone Dynamics and Evolution at the Calhoun Critical Zone Observatory. Richter, D. (2017): NSF Award #1331846

2017

Soil production, Earth’s critical zone, and the Anthropocene (Keynote talk for Theme 2: Climate Change). Richter, D. (2017): Wageningen Soil Conference 2017, 'Soil Science in a Changing World', 27-31 August 2017, Wageningen, The Netherlands

2017

Gilbert's soil production and the soil clay factory. Richter, D. deB. (2017): Soil Science Society of America International Annual Meeting, Tampa, FL, 22-25 Oct. 2017

2017

What do Darwin and Lyell have to do with 21st century ecosystem and critical zone science? (Keynote). Richter, D. deB. (2017): International Long Term Ecological Research Network & LTER-France (Zones Ateliers Network & Critical Zone Observatories) joint conference, Nantes, France, 2-4 October 2017

2017

Gilbert's soil production paradigm and the critical zone. Richter, D. deB. (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

Calhoun CZO as an ancient geobiologic and land-use altered time machine. Richter, D. deB., J. Wang, R. Bras, D. Markewitz, D. Nelson, J. Austin, P. Schroeder, S.A. Billings, K. O’Neill, J. Giesen, W.S. Holbrook, and B. Carr (2017): Critical Zone Science: Current Advances and Future Opportunities, workshop in Arlington, VA, 4-6 June, 2017

2017

Gilbert’s soil production paradigm and a critical zone’s size-dependent fractionation of particles. Richter, D.deB., J. Austin, R. Anderson, A. Bacon, S. Brantley, Z. Brecheisen, A. Cherkinsky, W.S. Holbrook, V. Marcon, J.Pachon, P. Schroeder, A. Thompson, and A. Wade (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017 Cross-CZO

2017

Every rural resident knows that the geosciences matter!. Richter, Daniel deB. (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Mapping depth to the argillic horizon on historically farmed hillslopes in the Calhoun CZO. Ryland, R.C. (2017): Crop and Soil Science Graduate Student Seminar, University of Georgia, Athens, GA

2017

Erosion alters depth to the argillic horizon: What impacts on hillslope interflow?. Ryland, Rachel, Daniel Markewitz, David E. Radcliffe, Aaron Thompson, and Lori Sutter (2017): Soil Science Society of America 2017 Annual Meeting, Tampa, FL

2017

Forward and backward evolution of the Calhoun CZO landscape. Sara Bonetti and Amilcare Porporato (2017): Critical Zone Science: Current Advances and Future Opportunities, workshop in Arlington, VA, 4-6 June, 2017

2017

Quantifying mineral transformations in the Calhoun Critical Zone Observatory (CCZO): What is it and how much is there?. Schroeder, Paul A., Jason C. Austin, and Daniel deB. Richter (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017

2017

Fostering Collaboration Across the US Critical Zone Observatories Network. Sharkey, S. and White, T. (2017): 2017 American Geophysical Union Fall Meeting, New Orleans, LA, 11-15 Dec Cross-CZO National

2017

Earthcasting controls of vegetation on solute fluxes and soil development in the critical zone. Sullivan, P.L., Goddéris, Y., Li, L., Billings, S., Macpherson, G.L., Shi, Y., Schott, J., Brantley, S.L. (2017): Critical Zone Science: Current Advances and Future Opportunities, Arlington, VA, 4-6 June, 2017 Cross-CZO

2017

Historical data digitization and micrometeorological measurements at Calhoun Critical Zone Observatory (CCZO). Tang, Yao, Sabina Shahnaz, Yawen Shen, Jinge Huo, Minjae Kim, Shih-Yu Huang, Husayn El Sharif, Cheng Yao, Satish Bastola, Rafael Bras, Jingfeng Wang (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

The potential for iron reduction in upland soils in Calhoun Critical Zone Observatory. Thompson, Aaron, Chunmei Chen, Nadia Noor, Caitlin Anne Hodges, Diego Barcellos, Daniel deB. Richter (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Influence of land-use on the abundance of soil mineral reactivity at the Calhoun CZO. Villanueva, R.C., Mantripragada, N., and Thompson, A. (2017): University of Georgia Young Scholars Conference, Athens, GA

2017

Legacy sediments as novel soil profiles. Wade, A., and D. deB. Richter (2017): Soil Science Society of America International Annual Meeting, Tampa, FL, 22-25 Oct. 2017

2017

Legacy sediments in Holcombe's Branch: a complicated dataset. Wade, Anna, Dan Richter, Allan James, Alex Cherkinsky, Will Cook (2017): Calhoun CZO 2017 Summer Science Meeting, Union, SC, 17-18 May 2017

2017

A layered past: The transformation and development of legacy sediments as alluvial soils. Wade, Anna, Daniel deB. Richter (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017

2017

Diurnal cloud cycle biases in climate models. Yin, Jun, and Amilcare Porporato (2017): Nature Communications 8: 2269

2016

Clay mineralogy of the deep core. Austin, J.C. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Changes in clay mineralogy of the Calhoun related to changes in land-use. Austin, J.C. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Semi-quantitative deep regolith clay mineralology of the Calhoun Critical Zone Observatory using NEWMOD 2. Austin, J.C.; P.A. Schroeder; and D.deB. Richter (2016): Clay Minerals Society Annual Meeting, Atlanta, GA

2016

Critical zone science for research and education on the Atlantic coastal plain. Bacon, A. (2016): NSF CZO Network Review Meeting, Arlington, VA, 14-15 November 2016

2016

Integrating soil ecological knowledge into restoration: How relevant is theory to practice?. Baer, S.B., and M.A. Callaham (2016): Ecological Society of America Annual Meeting, Ft. Lauderdale, FL, USA, August 2016

2016

Beyond the SCS-CN method: Theoretical framework for spatially-lumped rainfall-runoff response. Bartlett, M.S., A.J. Parolari, J.J. McDonnell, and A. Porporato (2016): Water Resources Research 52(6): 4608-4627

2016

Framework for event-based semidistributed modeling that unifies the SCS-CN method, VIC, PDM, and TOPMODEL. Bartlett, M.S., A.J. Parolari, J.J. McDonnell, and A. Porporato (2016): Water Resources Research 52 (9): 7036-7052

2016

Mean field approach to watershed hydrology. Bartlett, M.S., and A. Porporato (2016): European Geophysical Union General Assembly 2016, Vienna, Austria

2016

Crop water use and runoff in agricultural watersheds under hydro-climatic variability. Bartlett, M.S., and A. Porporato (2016): Invited talk at North Carolina State University, Raleigh, NC July 14, 2016

2016

Mean field approach to watershed hydrology. Bartlett, M.S., and A. Porporato (2016): CUAHSI 2016 Biennial Colloquium, Shepherdstown, WV

2016

A mean field approach to the watershed response under stochastic seasonal forcing. Bartlett, M.S., I. Rodriguez-Iturbe, and A.M. Porporato (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Vegetation control on gully erosion. Bastola, S., Y.G. Dialynas, R.L. Bras, and L.V. Noto (2016): Calhoun CZO 2016 Summer Science Meeting

2016

The role of vegetation on gully stabilization at a severely degraded landscape: a case study from Calhoun experimental critical zone observatory. Bastola, S., Y.G. Dialynas, R.L. Bras, L.V. Noto, and E. Istanbulluoglu (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

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

2016

Soil C transformations and translocation at the Calzone. Billings, S.A. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Projecting soil feedbacks to atmospheric CO2 following erosion and deposition on centennial timescales in two contrasting forests: A study of critical zone-atmosphere exchange. Billings, S.A., D. Richter, S.E. Ziegler, K.L. Prestegaard (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

The dynamical system of weathering: deterministic and stochastic analysis. Calabrese, S., A. Parolari, A.M. Porporato (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Soil formation and weathering modeling. Calabrese, S., A.J. Parolari, A. Porporato (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Assessment of the timing of daily peak streamflow in a snow dominated watershed. Chen, X., Kumar, M., Wang, R., Winstral, A., and D. Marks (2016): Journal of Hydrometeorology 17: 2225-2244 Cross-CZO

2016

Impact of gullying on hillslope hydrology at the Calhoun Critical Zone Observatory. Chen, Xing, and Mukesh Kumar (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

14C comparative analyses of different SOM fraction in Ultisol, Calhoun CZO. Cherkinsky, A., and R. Ehlinger (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Effect of agriculture and reforestation on turnover rates SOM in ultisol profiles, Calhoun CZO. Cherkinsky, A., and R. Ehlinger (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Tree age distribution at the Calhoun CZO. Cook, C.W. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Historical land use and land use change in and around the Calzone. Coughlan, M. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Human niche construction and legacy effects at the Calhoun CZO: The relationship of land use legacies and historical settlement patterns. Coughlan, M., and D. R. Nelson (2016): Southeastern Archaeological Conference, Athens, GA

2016

Transitioning from livelihood fire to fire suppression in the US Southeast: Causes and consequences of fire regime transition in two forested landscapes. Coughlan, M., D. R. Nelson, and T. Gragson (2016): International Fire Ecology and Management Congress, San Antonio, TX

2016

Soil organic matter stabilization by Fe-C interactions in temperate and tropical soils: A cross-CZO comparison. Coward, E.K., Thompson, A., Markewitz, D., Richter, D. deB., and Plante, A.F. (2016): Soil Science Society of America Annual Meeting, Phoenix, AZ, 6-9 November 2016 Cross-CZO

2016

Substrate quality influences organic matter accumulation in the soil silt and clay fraction. Cyle, K.T., N. Hill, K. Young, T. Jenkins, D. Hancock, P.A. Schroeder, A. Thompson (2016): Soil Biology and Biochemistry 103: 138-148

2016

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

2016

Topographic variability and the influence of soil erosion on the carbon cycle. Dialynas, Y. G., S. Bastola., R. L. Bras, S. A. Billings, D. Markewitz, and D. deB. Richter (2016): Global Biogeochemical Cycles 30(5): 644-660

2016

Influence of erosion and deposition on soil organic carbon dynamics. Dialynas, Y.G., Bras, R.L., and Richter, D.deB. (2016): Calhoun CZO 2016 Summer Science Meeting

2016

Impact of hydrologically driven hillslope erosion and landslide occurrence on soil organic carbon dynamics in tropical watersheds. Dialynas,Y.G., Bastola, S., Bras, R.L., Marin-Spiotta, E., Silver, W.L., Arnone, E., and Noto, L.V. (2016): Water Resources Research 52(11): 8895-8919 Cross-CZO

2016

AMS analysis of soil organic matter fractions of Ultisol separated by density and size. Ehlinger, R. and A. Cherkinsky (2016): University of Georgia Center for Undergraduate Research Opportunities Symposium

2016

Chemical composition of Calhoun streams 2014 to 2016. Foroughi, M. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Topographic influences on phosphorus redistribution in the Calhoun CZO, South Carolina. Foroughi, M., and D. Markewitz (2016): Workshop: Phosphorus Cycling in Terrestrial Ecosystems: Advancing our fundamental understanding through a model-data connection, May 23-25, 2016, Townsend, TN

2016

Variation of iron reduction with depth over time at the Calhoun CZO. Hodges, C. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Probing iron reduction from cm to km scales in forested ecosystems. Hodges, C., and A. Thompson (2016): Soil Science Society of America Annual Meeting, Minneapolis, MN

2016

Linking spatial and temporal patterns of soil moisture with iron reduction at the Calhoun CZO. Hodges, C., D. Markewitz, and A. Thompson (2016): Soil Science Society of Georgia Annual Meeting, Athens, GA

2016

Linking spatial and temporal patterns of soil moisture with iron reduction at the Calhoun CZO. Hodges, C., D. Markewitz, and A. Thompson (2016): University of Georgia Agronomy Graduate Student Association Annual Poster Session, Athens, GA

2016

Temporal variation of water and carbon influence the distribution of upland iron reduction in soils. Hodges, C., Mallard, J., Markewitz, D., Thompson, A., and McGlynn, B. (2016): Soil Science Society of America Annual Meeting, Phoenix, AZ, 6-9 November 2016

2016

Critical zone architecture and processes: a geophysical perspective. Holbrook, W. Steven (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA Cross-CZO National

2016

A coupled force-restore model of surface temperature and soil moisture using the maximum entropy production model of heat fluxes. Huang, S.-Y., and J. Wang (2016): Journal of Geophysical Research Atmospheres 121(13): 7528-7547

2016

Impact of deforestation and recovery on streamflow recession statistics. Krapu, Christopher, and Mukesh Kumar (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

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

2016

Role of meteorological controls on interannual variations in wet‐period characteristics of wetlands. Liu, Y. and Kumar, M. (2016): Water Resources Research 52(7): 5056-5074

2016

Increasing atmospheric humidity and CO2 concentration alleviate forest hydraulic failure risk. Liu, Y.; Parolari, A.; Kumar, M.; Porporato, A. M.; Katul, G. G. (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Parcel-level land use change at the Calhoun CZO. Lonneman, M. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Agent-based modeling of land use decision-making and soil erosion. Lonneman, M. (2016): Society for Applied Anthropology conference, Athens, GA

2016

Subsurface and terrain controls on runoff generation in deep soil landscapes. Mallard, J.M., B.L. McGlynn, and D. Richter (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Hydrologic and biologic influences on stream network nutrient concentrations: Interactions of hydrologic turnover and concentration-dependent nutrient uptake. Mallard, J.M., B.L. McGlynn, and T.P. Covino (2016): European Geosciences Union General Assembly 2016, Vienna, Austria

2016

Optimal control solutions to sodic soil reclamation. Mau, Y. and A. Porporato (2016): Advances in Water Resources 91: 37-45

2016

Carbon availability modifies temperature responses of heterotrophic microbial respiration, carbon uptake affinity, and stable carbon isotope discrimination. Min, Kyungjin, Christoph A. Lehmeier, Ford Ballantyne IV, and Sharon A. Billings (2016): Frontiers in Microbiology 7, Article 2083

2016

Clay mineral concentration with depth and land use history in the critical zone in Calhoun, South Carolina. Moraes, Anthony, Schroeder, Paul A. and Austin, Jason (2016): Geological Society of America Annual Meeting in Denver, Colorado, USA

2016

Human behavior and the CZO. Nelson, D.R. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Learning from the "deep changes in the land": The Critical Zone perspective in environmental science education. O'Neill, K., and Richter, D. (2016): The Earth Scientist 32 (3): 25-27 Cross-CZO National

2016

Where ‘life meets rock’: A Critical Zone perspective on water management. O'Neill, K.P. (2016): National Capital Region American Water Resources Associatio, Washington, DC, April 8, 2016

2016

Teaching in the zone: Engaging students through place-based, interdisciplinary science and research at the Calhoun Critical Zone Observatory. O'Neill, K.P. (2016): Association of Environmental Studies and Sciences, Washington, DC, June 10, 2016

2016

Place-based exploration of the southern Piedmont: The Calhoun Critical Zone Observatory. O'Neill, K.P. (2016): North Carolina Science Teachers’ Association, Greensboro, NC, October 21, 2016

2016

Exploring landscape processes in South Carolina’s southern Piedmont using data from the Calhoun Critical Zone Observatory. O'Neill, K.P. (2016): South Carolina Science Council Conference, Columbia SC, Nov 3, 2016

2016

Adventures in the Earth's critical zone: The Calhoun Critical Zone Observatory. O'Neill, K.P., and H. Morrison (2016): Virginia Association of Science Teachers, Williamsburg VA, Nov. 17, 2016

2016

Soil Particle Size Distribution and Landscape Position. Osota, E.O.; Ryland, R; Thompson, A. (2016): University of Georgia] Undergraduate Research Symposium, Athens, GA

2016

Social-ecological modeling. Parolari, A.J. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Forest soil carbon and nitrogen cycles under biomass harvest: Stability, transient response, and feedback. Parolari, A.J., Porporato, A. (2016): Ecological Modelling 326: 64-76

2016

Projected changes of rainfall seasonality and dry spells in a high greenhouse gas emissions scenario. Pascale, S.; Lucarini, V.; Feng, X.; Porporato, A.; Hasson, S. (2016): Climate Dynamics 46(3): 1331-1350

2016

Bistable plant-soil dynamics and biogenic controls on the soil production function. Pelak, N.F., A.J. Parolari, and A. Porporato (2016): Earth Surface Processes and Landforms 41(8): 1011-1017

2016

Mean field approach to watershed hydrology. Porporato, A., M. Bartlett (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Propagation of hydroclimatic variability through the critical zone. Porporato, A.M., S. Calabrese, and A. Parolari (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Soil Particle Fractionation Variances by Depth and Toposequence at Calhoun CZO. Powell, I.; Ryland, R.; Thompson, A. (2016): University of Georgia Young Scholar Program, Athens, GA

2016

Annual Report 2016: Human and Natural Forcings of Critical Zone Dynamics and Evolution at the Calhoun Critical Zone Observatory. Richter, D. (2016): NSF Award #1331846

2016

Emerging hypotheses at the Calhoun Critical Zone Observatory. Richter, D. deB. (2016): NSF CZO Network Review Meeting, Arlington, VA, 14-15 November 2016

2016

Volume and carbon contents of legacy sediments in the Holcombe's Branch watershed - The "discovery" of a novel biogeochemical system. Richter, D. deB. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Rapid turnover and minimal accretion of mineral soil carbon during 60-years of pine forest growth on previously cultivated land. Richter, D., M.L. Mobley, S.A. Billings, and D. Markewitz (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Mapping depth to argillic horizon using electromagnetic induction on historically farmed soils within the Piedmont region of the United States. Ryland, R., D. Markewitz, and A. Thompson (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Mapping depth to argillic horizons using electromagnetic induction on historically farmed soils within the Piedmont region of the United States. Ryland, R., Markewitz, D., and Thompson, A. (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA

2016

Mapping depth to argillic horizon. Ryland, R.C. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Deep regolith bulk mineralogy of the Calhoun Critical Zone Observatory using x-ray powder diffraction. Schroeder, P.A.; J.C. Austin; and D.deB. Richter (2016): Clay Minerals Society Annual Meeting, Atlanta, GA

2016

Reconnaissance oxygen and hydrogen stable isotope geochemistry of waters from the critical zone in the Iznik Lake basin region, Turkey. Schroeder, P.A.; Ö.I. Ece; C. Demirel; and A. Milewski (2016): 7th International Geochemistry Symposium

2016

The role of redox variability in structuring iron cycling in soils. Thompson, A. (2016): Georgia Tech Environmental Science and Technology Sympoium Series, Atlanta, GA

2016

Can we predict iron reduction rates across terrestrial ecosystems?. Thompson, A. (2016): Telluride Summer Science Series, Telluride, CO

2016

Depth variation of iron crystallinity at the Calzone. Thompson, A. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

The multiple roles of short-range-ordered iron minerals in soils. Thompson, A. (2016): Cornell University Biogeochemistry Seminar Series, Ithaca, NY

2016

Representation of diffusion controlled carbon stabilization in reactive transport models. Thompson, A., Druhan, J.L., Keiluweit, M., Wagai, R., Plante, A.F., Lawrence, C.R., Berhe, A.A., Sierra, C.A., Rasmussen, C., Marin-Spiotta, E., Blankinship, J.C., Schimel, J., Heckman, K.A., Crow, S.E., and Wieder, W.R. (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA Cross-CZO

2016

Introduction to legacy sediments. Wade, A. (2016): Calhoun CZO 2016 Summer Science Meeting, Clinton, SC

2016

Maximum entropy production model of heat fluxes - an application of information theory in modeling earth system. Wang, J. (2016): Workshop on Information Theory and the Earth System, Germany, 27 April 2016

2016

Simulating the spatio-temporal dynamics of soil erosion, deposition, and yield using a coupled sediment dynamics and 3D distributed hydrologic model. Zi, T., Kumar, M., Kiely, G., Lewis, C., and Albertson, J. (2016): Environmental Modelling & Software 83: 310-325

2015

Stochastic rainfall-runoff model with explicit soil moisture dynamics. Bartlett, M.S., E. Daly, J.J. McDonnell, A.J. Parolari, A. Porporato (2015): Proceedings of the Royal Society A 471(2183): 20150389

2015

Small-scale experiments in diverse ecosystem highlight intricate linkages between microbial behavior and ecosystem-scale processes. Billings, S., Wood, T., Buckeridge, K., Min, K., Lehmeier, C., Flournoy, R., Huang, Z., Ziegler, S., Richter, D., Pett-Ridge, J., Brodie, E., Bouskill, N. (2015): Ecological Society of America Annual Meeting, Baltimore, MD

2015

Investigating microbial transformations of soil organic matter: synthesizing knowledge from disparate fields to guide new experimentation. Billings, S.A., Tiemann, L.K., Ballantyne, F., Lehmeier C.A., Min, K. (2015): Soil 1: 313-330

2015

The dependence on topography of the influence of soil erosion and deposition on the carbon cycle at the Calhoun Critical Zone Observatory. Bras, R.; Dialynas, Y.; Billings, S.; Richter, D.; Markewitz, D. (2015): American Geophysical Union Fall Meeting, December 2015, San Francisco, CA

2015

Ordering interfluves: a simple proposal for understanding critical zone evolution and function. Brecheisen, Z.; Richter, D.; Moon, S.; Halpin, P. (2015): American Geophysical Union Fall Meeting, December 2015, San Francisco, CA

2015

Variations in streamflow response to large hurricane-season storms in a southeastern US watershed. Chen, X., M. Kumar, and B.L. McGlynn (2015): Journal of Hydrometeorology 16: 55-69

2015

How 14C signature in SOM change with depth and chemical bonding with minerals. Cherkinsky, A. (2015): Workshop: Fate of old carbon in the next centuries, Hamburg, Germany

2015

14C distribution in soils with different history of land use in Calhoun CZO. Cherkinsky, A., and Markewitz, D. (2015): Goldschmidt Conference, Prague, CZ

2015

Transitioning from livelihood fire to fire suppression in the US Southeast: Causes and consequences of fire regime transition in two forested landscapes. Coughlan, M., D.R. Nelson, T. Gragson (2015): Fire Ecology and Management Congress, San Antonio, TX

2015

A Coupled Spatially Explicit Modelling Approach to Assess the Influence of Soil Erosion and Deposition on the Redistribution of Soil Organic Carbon at the Watershed Scale. Dialynas, Y. G., Bastola, S., Bras, R. L., Billings, S. A., Richter, D. deB., and Markewitz, D. (2015): 2nd Annual Southeastern Biogeochemistry Symposium, Atlanta, GA, Mar. 28-29, 2015

2015

Topographic variability in the influence of soil erosion on the carbon cycle. Dialynas, Y. G., Bastola, S., Bras, R. L., Billings, S. A., Richter, D. deB., and Markewitz, D. (2015): Calhoun CZO 2015 Summer Science Meeting

2015

Diachronous beginnings of the Anthropocene: The lower bounding surface of anthropogenic deposits. Edgeworth, M., D.deB. Richter, C. Waters, P. Haff, C. Neal, S.J. Price (2015): The Anthropocene Review 2 (1): 33-58

2015

Modeling regional crop yield and irrigation demand using SMAP type of soil moisture data. El Sharif, H., J. Wang, and A.P. Georgakakos (2015): Journal of Hydrometeorology 16 (2): 904-916

2015

Stochastic soil water balance under seasonal climates. Feng, X., Porporato, A., and Rodriguez-Iturbe, I. (2015): Proceedings of the Royal Society A 471:20140623

2015

Creating deep soil core monoliths: Beyond the solum. Fitzpatrick, S. D., P. A. Schroeder, and D. M. Endale (2015): Southeastern Geology 51(2): 85-96

2015

Burying King Cotton: Environment and Culture in the Post-Cotton South. Giesen, James C. (2015): Invited address for University of South Carolina “Year of Cotton” Program, October 15, 2015

2015

Maximum Entropy Production modeling of evapotranspiration partitioning on heterogeneous terrain and canopy cover: advantages and limitations. Gutierrez-Jurado, H.A., H. Guan, J. Wang, H. Wang, R.L. Bras, and C.T. Simmons (2015): American Geophysical Union Fall Meeting, San Francisco, CA, December, 2015

2015

Nonlinear dynamics of the CAM circadian rhythm in response to environmental forcing. Hartzell, S.; Bartlett, M. S.; Virgin, L.; Porporato, A. (2015): Journal of Theoretical Biology 368:83-94

2015

Using Electromagnetic Induction to Determine Spatial and Temporal Patterns of Iron Reduction at the Calhoun CZO. Hodges, C., Markewitz, D., and Thompson, A. (2015): Calhoun CZO 2015 Summer Science Meeting

2015

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

2015

Exploring the role of domain partitioning on efficiency of parallel distributed hydrologic model simulations. Kumar, M., and Duffy, C. J. (2015): Journal of Hydrogeology & Hydrologic Engineering 4: 1-12 Cross-CZO

2015

A dynamical system approach to soil salinity and sodicity. Mau, Y., and Porporato, A. (2015): Advances in Water Resources 83:68-76

2015

Surficial gains and subsoil losses of soil carbon and nitrogen during secondary forest development. Mobley, Megan L., Kate Lajtha, Marc G. Kramer, Allan R. Bacon, Paul R. Heine and Daniel deB. Richter (2015): Global Change Biology 21(2): 986-996

2015

Integration of fuzzy logic and image analysis for the detection of gullies in the Calhoun Critical Zone Observatory using airborne LiDAR data. Noto, L.; Bastola, S.; Dialynas, Y.; Bras, R. (2015): American Geophysical Union Fall Meeting, December 2015, San Francisco, CA

2015

Seeing is believing: Exploring land use/land cover change in the southern Piedmont using virtual field trips. O'Neill, K. P. (2015): Association for Environmental Studies and Sciences, San Diego CA

2015

The Earth’s Critical Zone as an integrating theme for undergraduate environmental science courses: A case study at the Calhoun Critical Zone Observatory. O'Neill, K. P., and Richter, D. D. (2015): Association for Environmental Studies and Sciences, San Diego CA

2015

Engaging students through virtual field trips: Calhoun CZO. O’Neill KP; Ramey AJ (2015): Virginia Association of Science Teachers, Chantilly VA, Nov. 21. (accepted)

2015

Making connections: Linking human and natural systems through education and outreach at the Calhoun Critical Zone Observatory. O’Neill, K. P. (2015): Ecological Society of America Annual Meeting, Baltimore, MD

2015

The Doomsday Equation and 50 years beyond: new perspectives on the human‐water system. Parolari, A. J., Katul, G., Porporato, A. (2015): WIREs Water 2:407-414

2015

Chapter 6 – Soil Geochemistry in the Critical Zone: Influence on Atmosphere, Surface- and Groundwater Composition. Perdrial J., Thompson A., Chorover J. (2015): Developments in Earth Surface Processes 19: 173–201 Cross-CZO

2015

On the probabilistic structure of water age. Porporato, A., and Calabrese, S. (2015): Water Resources Research 51(5):3588-3600

2015

Ecohydrological modeling in agroecosystems: Examples and challenges. Porporato, A.; Feng, X.; Manzoni, S.; Mau, Y.; Parolari, A. J.; Vico G. (2015): Water Resources Research 51(7): 5081-5099

2015

Impact of cloud timing on surface temperature and related hydroclimatic dynamics. Porporato, A.M., and J. Yin (2015): American Geophysical Union 2015 Fall Meeting, San Francisco, CA

2015

Soil in the Anthropocene. Richter D. deB, Bacon A.R, Brecheisen Z., & Mobley M.L. (2015): IOP Conference Series: Earth and Environmental Science, 25: 012010

2015

Annual Report 2015: Human and Natural Forcings of Critical Zone Dynamics and Evolution at the Calhoun Critical Zone Observatory. Richter, D. (2015): NSF Award #1331846

2015

"One Physical System": Tansley's Ecosystem Concept as Earth's Critical Zone. Richter, D. deB., and Billings, S. A. (2015): Calhoun CZO 2015 Summer Science Meeting

2015

'One Physical System': Tansley's ecosystem as Earth's critical zone. Richter, D. deB., and S.A. Billings (2015): New Phytologist 206 (3): 900-912

2015

One physical system: Tansley's ecosystems as Earth's critical zone. Richter, D., Billings, S. (2015): Ecological Society of America Annual Meeting, Baltimore, MD

2015

Geophysical and chemical weathering signatures across the deep weathered-unweathered granite boundary of the Calhoun Critical Zone Observatory. Richter, D.; Bacon, A.; Brantley, S.; Holbrook, S. (2015): American Geophysical Union Fall Meeting, December 2015, San Francisco, CA

2015

Approximate analytical solution to diurnal atmospheric boundary-layer growth under well-watered conditions. Rigby, J. R.; Yin, J.; Albertson, J. D.; Porporato, A. (2015): Boundary-Layer Meteorology 156(1):73-89

2015

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 350 (6260): 534-538 Cross-CZO National

2015

Depth Variation of Soil Iron Crystallinity at the Calhoun Critical Zone Observatory. Thompson A, Barcellos D, Wilmoth J, & Richter D (2015): Goldschmidt Conference, Prague, CZ

2015

Oxygen flux modulates net rates of Fe reduction and Fe solid phase composition in redox dynamic soils. Thompson A., and Wilmoth, J. (2015): American Chemical Society National Meeting, Denver, CO

2015

Behavior of natural iron nanoparticles in soils. Thompson, A. (2015): Georgia State University Geology Seminar Series, Atlanta, GA

2015

Iron dynamics at the Luquillo and Calhoun Critical Zone Observatories: Proposed linkages to C cycling. Thompson, A. (2015): University of Vermont Biogeochemistry Symposium Series Cross-CZO

2015

Chemical behavior of natural iron nanoparticles in soils. Thompson, A. (2015): University of Georgia Chemistry Seminar Series, Athens, GA

2015

Critical zone research at the University of Georgia. Thompson, A. (2015): Departmental Seminar, University of Padua

2015

Chapter 2 – The Role of Critical Zone Observatories in Critical Zone Science. White T., Brantley S., Banwart S., Chorover J., Dietrich W., Derry L., Lohse K., Anderson S., Aufdendkampe A., Bales R., Kumar P., Richter D., McDowell B. (2015): Developments in Earth Surface Processes 19: 15–78 Cross-CZO National

2015

Land and atmospheric controls on initiation and intensity of moist convection: CAPE dynamics and LCL crossings. Yin, J., J.D. Albertson, J.R. Rigby, A Porporato (2015): Water Resources Research 51(10): 8476-8493

2014

Assessment of Pedogenic Gibbsite as a Paleo-PCO2 Proxy Using a Modern Ultisol. Austin, J.C., and P.A. Schroeder (2014): Clays and Clay Minerals 62(4): 253-266

2014

Guiding empirical and theoretical explorations of organic matter decay using disparate fields. Billings, S., Ballantyne, F., Lehmeier, C., Min, K. (2014): American Geophysical Union annual meeting, San Francisco, California, December, 2014

2014

Temperature and substrate C:N drive microbial carbon use efficiency and 13C discrimination. Billings, S., Lehmeier, C., Min, K., Ballantyne, F. (2014): Soil Science Society of America annual meeting, Long Beach, California, November, 2014

2014

Ordering interfluves: A simple proposal for understanding critical zone evolution. Brecheisen, Z.S., and D. deB. Richter (2014): Procedia Earth and Planetary Science 10: 77-81

2014

Assessing the impact of landscape evolution on carbon dynamics: a coupled physically-based modelling approach. Dialynas, Y. G.; Bastola, S.; Billings, S. A.; Bras, R. L. (2014): American Geophysical Union annual meeting, San Francisco, California, December, 2014

2014

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

2014

Understanding the Variations in Flood Responses to Tropical-Storms and Hurricanes. Kumar, M., Chen, X., and McGlynn, B. (2014): American Geophysical Union annual meeting, San Francisco, California, December, 2014

2014

The Calhoun Critical Zone Observatory: understanding the evolution of the critical zone after centuries of anthropogenic degradation. Mallard, J. M.; McGlynn, B. L.; Richter, D. (2014): American Geophysical Union annual meeting, San Francisco, California, December, 2014

2014

Ecosystem and geoscientists to hybridize their sciences. Richter, D., Billings, S. (2014): American Geophysical Union annual meeting, San Francisco, California, December, 2014

2014

Soil Moisture and Vegetation Controls on Surface Energy Balance using MEP Model of ET. Wang, J., Parolari, A., and Huang, S.-Y. (2014): American Geophysical Union annual meeting, San Francisco, California, December, 2014

2011

Interdisciplinary Sciences in a Global Network of Critical Zone Observatories. Lin, H., Hopmans, J. W., Richter, D. deB. (2011): Vadose Zone Journal 10: 781-785 Cross-CZO