Daniel deB. Richter
INVESTIGATOR, Lead-PI
Professor
.(JavaScript must be enabled to view this email address), 919 613 8031
CalhounPhone/Address
919 613 8031Duke University Nicholas School of the Environment A239B LSRC Durham, NC 27708
Links
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CZO Publications
Papers/Books
2020
Quantification of Mixed-Layer Clays in Multiple Saturation States Using NEWMOD2: Implications for the Potassium Uplift Hypothesis in the SE United States. Austin, J.C., Richter, D.D. & Schroeder, P.A. (2020): Clays and Clay Minerals
2020
Impact of gully incision on hillslope hydrology. Chen, Xing, Mukesh Kumar, Daniel deB. Richter, and Yair Mau (2020): Hydrological Processes 34(19): 3848-3866
2020
Persistent anthropogenic legacies structure depth dependence of regenerating rooting systems and their functions. Hauser, Emma, Daniel D. Richter, Daniel Markewitz, Zachary Brecheisen, and Sharon A. Billings (2020): Biogeochemistry 147: 259-275
2020
Critical Agents of Change at Earth’s Surface. Kumar, P., Herndon, E., and Richter D. (2020): Eos
2020
Game changer in soil science The Anthropocene in soil science and pedology. Richter, Daniel D. (2020): Journal of Plant Nutrition and Soil Science 183 (1): 5-11
2020
Ansichten der Calzone: Views of the Calhoun Critical Zone Observatory. Richter, Daniel D., and Sharon A. Billings (2020): In: Critical Zones: The Science and Politics of Landing on Earth, Editors: Bruno Latour & Peter Weibel, ZKM | Center for Art and Media, distributed by The MIT Press
2020
Soil production and the soil geomorphology legacy of Grove Karl Gilbert. Richter, Daniel D., Martha-Cary Eppes, Jason C. Austin, Allan R. Bacon, Sharon A. Billings, Zachary Brecheisen, Terry A. Ferguson, Daniel Markewitz, Julio Pachon, Paul A. Schroeder, Anna M. Wade (2020): Soil Science Society of America Journal 84(1): 1-20
2020
Limited carbon contents of centuries old soils forming in legacy sediment. Wade, A., D.D. Richter, A. Cherkinsky, C.B. Craft, P.R. Heine (2020): Geomorphology 354: 107018
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
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
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
Chapter 19 Long-term forest soils research: lessons learned from the US experience . Knoepp, Jennifer D., Daniel Markewitz, Mac A. Callaham, Mary Beth Adams, Stephanie H. Laseter, Larry West, Robert Harrison, and Daniel D. Richter (2019): In: Global Change and Forest Soils (Developments in Soil Science series, vol. 36), ed. by Matt Busse, Christian Giardina, Dave Morris, and Deborah Page-Dumroese
2019
Chapter 4 History of forest soils knowledge and research. Knoepp, Jennifer D., Mary Beth Adams, Robert Harrison, Larry West, Stephanie Laseter, Daniel Markewitz, Daniel D. Richter, and Mac Callaham (2019): In: Global Change and Forest Soils (Developments in Soil Science series, vol. 36), ed. by Matt Busse, Christian Giardina, Dave Morris, and Deborah Page-Dumroese
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
A pedology and pedostratigraphy for the Anthropocene . Richter, D.deB., S.A. Billings, C. Waters (2019): In Stratigraphic Signatures of the Anthropocene (Chapter 2) of The Anthropocene as a Geological Time Unit, edited by Jan Zalasiewicz, Colin Waters, Mark Williams, Colin Summerhayes (eds.), Cambridge University Press
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
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
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
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
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
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
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
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
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
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
Making the case for a formal Anthropocene Epoch: an analysis of ongoing critiques. Zalasiewicz, Jan; Waters, Colin N.; Wolfe, Alexander P.; Barnosky, Anthony D.; Cearreta, Alejandro; Edgeworth, Matt; Ellis, Erle C.; Fairchild, Ian J.; Gradstein, Felix M.; Grinevald, Jacques; Haff, Peter; Head, Martin J.; Ivar do Sul, Juliana A.; Jeandel, Catherine; Leinfelder, Reinhold; McNeill, John R.; Oreskes, Naomi; Poirier, Clément; Revkin, Andrew; Richter, Daniel deB.; Steffen, Will; Summerhayes, Colin; Syvitski, James P.M.; Vidas, Davor; Wagreich, Michael; Wing, Scott; Williams, Mark (2017): Newsletters on Stratigraphy 50(2): 205-226
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
Global nitrogen budgets in cereals: A 50-year assessment for maize, rice, and wheat production systems. Ladha, J.K., A. Tirol-Padre, C.K. Reddy, K.G. Cassman, S. Verma, D.S. Powlson, C. van Kessel, D. deB. Richter, D. Chakraborty, and H. Pathak (2016): Scientific Reports 6: 19355
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
Stratigraphic and Earth system approaches to defining the Anthropocene. Steffen, W. and 27 co-authors including D.deB. Richter (2016): Earth's Future 4 (8): 324-345
2016
The Anthropocene is functionally and stratigraphically distinct from the Holocene. Waters, C.N., and 23 co-authors, including D.deB. Richter (2016): Science 351(6269): 137
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
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
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
'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
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
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
Disputed start dates for Anthropocene. Zalasiewicz J., and 23 co-authors, including D. deB. Richter (2015): Nature 520: 436
2015
When did the Anthropocene begin? A mid-twentieth century boundary level is stratigraphically optimal. Zalasiewicz J., C.N. Waters, M. Williams, A.D. Barnosky, A. Cearreta, P. Crutzen, E. Ellis, M.A. Ellis, I.J. Fairchild, J. Grinevald, R. Leinfelder, J. McNeill, C. Poirier, D. Richter, W. Steffen, D. Vidas, M. Wagreich, A.P. Wolfe, and A. Zhisheng (2015): Quaternary International 383: 204-207
2015
Colonization of the Americas, ‘Little Ice Age’ climate, and bomb-produced carbon: Their role in defining the Anthropocene. Zalasiewicz, Jan, et al. including D. deB. Richter (2015): The Anthropocene Review 2 (2): 117-127
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
Evolution of Soil, Ecosystem, and Critical Zone Research at the USDA FS Calhoun Experimental Forest. Richter, D. deB., A.R. Bacon, S.A. Billings, D. Binkley, M. Buford, M.A. Callaham, A.E. Curry, R.L. Fimmen, A. S. Grandy, P.R. Heine, M. Hofmockel, J.A. Jackson, E. LeMaster, J. Li, D. Markewitz, M.L. Mobley, M.W. Morrison, M.S. Strickland, T. Waldrop, and C. G. Wells (2014): In: USDA Forest Service Experimental Forests and Ranges: Research for the Long Term, Chapter: 18, Publisher: Springer Verlag, Editors: D.C. Hayes, S.L. Stout, R.H. Crawford, A.P. Hoover, pp. 405-433
2013
Accumulation and decay of woody detritus in a humid subtropical secondary pine forest. Mobley, Megan L., Daniel deB. Richter, and Paul R. Heine (2013): Canadian Journal of Forest Research 43: 109–118
2012
Coupling meteoric 10Be with pedogenic losses of 9Be to improve soil residence time estimates on an ancient North American interfluve. Bacon, Allan R., Daniel deB. Richter, Paul R. Bierman, and Dylan H. Rood (2012): Geology 40 (9): 847–850
2012
Effects of two-century land use changes on soil iron crystallinity and accumulation in Southeastern Piedmont region, USA. Li, Jianwei and Daniel Deb. Richter (2012): Geoderma 173-174: 184-191
2012
“The Changing Model of Soil” Revisited. Richter, Daniel deB., and Dan H. Yaalon (2012): Soil Science Society of America Journal 76 (3):766-778
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
2011
Human-soil relations are changing rapidly: Proposals from SSSA's cross-divisional soil change working group. Richter, DD; Bacon, AR; Mobley, LM; Richardson, CJ; Andrews, SS; West, L; Wills, S; Billings, S; Cambardella, CA; Cavallaro, N; DeMeester, JE; Franzluebbers, AJ; Grandy, AS; Grunwald, S; Gruver, J; Hartshorn, AS; Janzen, H; Kramer, MG; Ladha, JK; Lajtha, K; Liles, GC; Markewitz, D; Megonigal, PJ; Mermut, AR; Rasmussen, C; Robinson, DA; Smith, P; Stiles, CA; Tate, RL; Thompson, A; Tugel, AJ; Es, HV; Yaalon, D; Zobeck, TM (2011): Soil Science Society of America Journal 75(6): 2079-2084
2010
A simple method for estimating the influence of eroding soil profiles on atmospheric CO2. Billings, S. A., Buddemeier, R. W., Richter, D. deB., Van Oost, K., and Bohling, G. (2010): Global Biogeochemical Cycles, Vol. 24, GB2001
2010
Effects of land-use history on soil spatial heterogeneity of macro- and trace elements in the Southern Piedmont USA. Li, Jianwei, Daniel deB. Richter, Arlene Mendoza, Paul Heine (2010): Geoderma Volume 156(1-2): 60-73
2009
Monitoring Earth's Critical Zone. Richter, Daniel deB., Jr., and Mobley, Megan L. (2009): Science 326(5956): 1067-1068
2008
Rhizogenic Fe–C redox cycling: a hypothetical biogeochemical mechanism that drives crustal weathering in upland soils. Fimmen, Ryan L., Daniel deB. Richter, Jr., Dharni Vasudevan, Mark A. Williams, Larry T. West (2008): Biogeochemistry 87(2): 127-141
2008
Four-decade responses of soil trace elements to an aggrading old-field forest: B, Mn, Zn, Cu, and Fe. Li, Jianwei, Daniel deB. Richter, Arlene Mendoza, Paul Heine (2008): Ecology 89 (10): 2911-2923
2007
Coupling between biota and earth materials in the critical zone. Amundson, Ronald, Daniel D. Richter, Geoff S. Humphreys, Esteban G. Jobbágy, Jérôme Gaillardet (2007): Elements 3 (5): 327-333
2007
Humanity's transformation of Earth's soil: Pedology's new frontier. Richter, D. deB. (2007): Soil Science 172 (12): 957-967
2007
Long-term soil experiments: Keys to managing Earth's rapidly changing ecosystems. Richter, Daniel deB. Jr., Michael Hofmockel, Mac A. Callaham, David S. Powlson, and Pete Smith (2007): Soil Science Society of America Journal 71 (2): 266-279
2006
Changes in stable isotope signatures of soil nitrogen and carbon during 40 years of forest development. Billings, S. A. and Richter, D. D. (2006): Oecologia 148 (2): 325-333
2006
Long-term land-use effects on soil invertebrate communities in Southern Piedmont soils, USA. Callaham Jr., M.A., D.D. Richter Jr., D.C. Coleman, M. Hofmockel (2006): European Journal of Soil Biology 42 (Supplement 1): S150-S156
2006
Bioavailability of slowly cycling soil phosphorus: major restructuring of soil P fractions over four decades in an aggrading forest. Richter, Daniel D., H. Lee Allen, Jianwei Li, Daniel Markewitz, Jane Raikes (2006): Oecologia 150 (2): 259-271
2005
Elemental translocation and loss from three highly weathered soil–bedrock profiles in the southeastern United States. Oh, N-H, and D. D. Richter (2005): Geoderma 126 (1-2): 5-25
2005
What regulates soil CO2 concentrations? A modeling approach to CO2 diffusion in deep soil profiles. Oh, N-H, H-S Kim, and D. D. Richter, Jr. (2005): Environmental Engineering Science 22 (1): 38-45
2004
Proposed initiative would study Earth's weathering engine. Anderson, Suzanne P., Joel Blum, Susan L. Brantley, Oliver Chadwick, Jon Chorover, Louis A. Derry, James I. Drever, Janet G. Hering, James W. Kirchner, Lee R. Kump, Daniel Richter, Art E. White (2004): Eos, Transactions, American Geophysical Union 85 (28): 265-269 Cross-CZO National
2004
Soil acidification induced by elevated atmospheric CO2. Oh, N-H, and D. deB. Richter, Jr. (2004): Global Change Biology 10 (11): 1936-1946
2001
Understanding Soil Change: Soil Sustainability over Millennia, Centuries, and Decades. Richter, D.D., and D. Markewitz (2001): Cambridge University Press, New York, 255 p
2000
Long-term soil potassium availability from a Kanhapludult to an aggrading loblolly pine ecosystem. Markewitz, Daniel, Daniel D.Richter (2000): Forest Ecology and Management 130 (1-3): 109-129
2000
Legacies of agriculture and forest regrowth in the nitrogen of old-field soils. Richter, Daniel D., Daniel Markewitz, Paul R. Heine, Virginia Jin, Jane Raikes, Kun Tian, Carol G. Wells (2000): Forest Ecology and Management 138 (1-3): 233-248
1999
Rapid accumulation and turnover of soil carbon in a re-establishing forest. Richter, Daniel D., Daniel Markewitz, Susan E. Trumbore, and Carol G. Wells (1999): Nature 400: 56-58
1998
Three decades of observed soil acidification at the Calhoun Experimental Forest: Has acid rain made a difference?. Markewitz, D., D.D. Richter, H.L. Allen, J.B. Urrego (1998): Soil Science Society of America Journal 62 (5): 1428-1439
1995
Soil carbon turnover in a recovering temperate forest. Harrison, K.G., W.M. Post, D.D. Richter (1995): Global Biogeochemical Cycles 9 (4): 449-454
1994
Soil chemical change during three decades in an old-field Loblolly Pine (Pinus taeda L) ecosystem. Richter, D.D., D. Markewitz, C.G. Wells, H.L. Allen, R. April, P.R. Heine, B. Urrego (1994): Ecology 75 (5): 1463-1473
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Other CZO Publications
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
Anthropogenic Declines in Deep Roots Constrain Deep Soil Organic Carbon Forms and Fluxes. Billings, Sharon A, Pamela L Sullivan, Ligia Souza, Emma Hauser, Terry Loecke, Kyler Lang, Charles W Rice, Daniel Hirmas, Daniel deB. Richter, Alexander Cherkinsky, Daniel Markewitz (2019): American Geophysical Union Fall Meeting, San Francisco, CA, December 9-13, 2019
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
Re-investigation of a colluvially filled valley containing deeply buried organic-rich sediments of pleistocene age, Pauline, South Carolina. Ferguson, Terry A., Allan R. Bacon, Martha C. Eppes, Daniel D. Richter, Debra A. Willard, Sharon A. Billings, Jason C. Austin, Michelle S. Nelson, Alexander Cherkinsky (2019): Geological Society of America Southeastern Section Annual Meeting, Charleston, South Carolina, 28–29 March 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
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
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
Predicting Saturated Hydraulic Conductivity with Rapid Estimates of Soil Microaggregation. Pachon, Julio C., Daniel Richter, Daniel Markewitz, Aaron Thompson, Anna Wade, Rachel Ryland, and Allan R. Bacon (2019): ASA-CSSA-SSSA International Annual Meeting, 10-13 Nov. 2019, San Antonio, Texas
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
How Deep is Soil?. 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
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
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
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
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
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
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
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
Calhoun CZO Annual Report 2018. Richter, D., Kumar, M., McGlynn, B.L., Palmorth, S., Porporato, A. (2018): NSF Award #1331846
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
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
CZO perspective in Central Africa: The Lopé watershed, Lopé National Park, Ogooué River basin, Gabon. Braun, J.-J., M.-C. Paiz, M. J. McGrath, N. Rabenkogo, A. P. Mbonda, L. White, J. Gaillardet, J. Bouchez, J. S. Moquet, V. Regard, S. Carretier, J. P. Bricquet, G. Mahé, and D.deB. Richter Jr. (2017): International Long Term Ecological Research Network & LTER-France (Zones Ateliers Network & Critical Zone Observatories) joint conference, Nantes, France, 2-4 October 2017
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
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
How to make soil: Add parent material, soil animals, roots, weather, and set the blender on "liquefy". Callaham, M.A. Jr., K.R. Butt, J. Görres, D.deB. Richter, and Z. Brecheisen (2017): 5th Nereis Park Conference, SUNY Stony Brook, Southampton, NY, 8-11 August 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
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
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
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
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
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
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
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
Gilbert's soil production paradigm applied to a critical zone's fractionation of particle sizes. Richter, Daniel deB., Jason Austin, Robert S Anderson, Allan R Bacon, Susan L Brantley, Zachary Brecheisen, Paul A Schroeder, Anna Wade, W. Steven Holbrook, Virginia Marcon, Aaron Thompson (2017): American Geophysical Union 2017 Fall Meeting, New Orleans, Louisiana, 11-15 December 2017 Cross-CZO
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
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
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
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
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
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
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
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
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
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
2015
Scaling from small-scale experiments to the Critical Zone to explain ecosystem patterns of soil organic C dynamics. Billings, S., Lehmeier, C., Min, K., Flournoy, R., & Richter, D. (2015): Cross CZO Working Group on Organic Matter Dynamics with Sino-US partners, Purdue University
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
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
CZO perspective in central Africa : the Lopé watershed, Lopé National Park, Ogooué River basin, Gabon. Braun, J.-J.; Jeffery, K.; Aurélie Flore Koumba Pambo, A. F. K.; Paiz, M.-C.; Richter, D.; Poulsen, J.; Gaillardet J. (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
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
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
Towards an International Network of Critical Zone Observatories. Lin, Hangsheng, Steve Banwart, Timothy Filley, Dali Guo, Daniel Richter, Susan Trumbore, Harry Vereecken and Joerg Voelkel (2015): EP31A-0980 International Critical Zone Research: Status, Networking, and Challenges Posters, presented at 2015 Fall Meeting, AGU, San Francisco, CA, 14-18 Dec.
2015
Estimation of LAI, fPAR and AGB based on data from Landsat 8 and LiDAR at the Calhoun CZO. Majasalmi, T., Palmroth, S., Cook, W., Brecheisen, Z., Richter, D. (2015): Calhoun CZO 2015 Summer Science Meeting
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
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
A Proposal for a Calhoun Drilling Program: Where geophysics meets (bio)geochemistry. Richter, D. (2015): Calhoun CZO 2015 Summer Science Meeting
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 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
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Models
tRIBS-ECO
Triangulated Irregular Network-based Real-time Integrated Basin Simulator-Erosion and C Oxidatition
Spatially- and depth-explicit physically-based model of hydro-geomorphic processes and of soil organic carbon dynamics.
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News
K-12 Activity: Humans and Soil Change
19 Jul 2020 - The activity familiarizes students with some of the environmental and human factors that contribute to accelerated rates of soil erosion.
2020 CZO Webinar Series on Sustainability
17 Jun 2020 - For an updated listing of these talks, including abstracts, see /national/education-outreach/sustainability-2020/ The U.S....
Field trip of Penn State students to the Calhoun, 6/7/2019
21 Aug 2019 - Dan Markewitz and Dan Richter led a field trip on June 6-7, 2019 in the rain (perhaps 3") across the Calhoun CZO with Penn State students. We...
Graduate Student Critical Zone Reading Group Wraps the Semester with a Field Trip to Calhoun CZO
12 Jun 2019 - Five students travelled to Union, South Carolina for a two-day site visit June 6 – June 8 at the Calhoun CZO. This site visit was the...
Calhoun weathering paper published in Nature’s Scientific Reports
14 Mar 2019 - Calhoun weathering paper is out in Nature's Scientific Reports.
Calhoun CZO featured in Duke Magazine
14 Nov 2018 - How critical zone science unearths secrets: The new cross-disciplinary field of study concerns itself with the living skin of the Earth.
Strengthening the biogeosciences in environmental research networks
15 Aug 2018 - Our EGU Biogeosciences Discussions manuscript became a Biogeosciences paper today! The official pdf can be downloaded (on upper right of page) at:...
Elevating the biogeosciences within environmental research networks
02 Mar 2018 - This manuscript, led by Dan Richter with six Calzones co-authors, was just submitted to Biogeosciences Discussions.
2018 Southeast Friends of the Pleistocene Field Conference
09 Feb 2018 - Geophysics, Geochemistry, and Biogeochemistry of the Southern Piedmont Critical Zone
CZ themed issue of NAGT’s In the Trenches
31 Oct 2017 - This issue of In the Trenches explores the richly interdisciplinary concept of the Critical Zone (CZ).
CZNews: Spring 2017
01 May 2017 - CZO Newsletter CZNews: Spring 2017
Zach Brecheisen wins the Frederick K. Weyerhaeuser Forest History Fellowship
27 Apr 2017 - The Forest History Society announces that Zachary Brecheisen is the 2017-18 recipient of the F. K. Weyerhaeuser Fellowship! The fellowship consists...
Diego Barcellos Featured in UGA Graduate School Magazine
08 Feb 2017 - The Winter 2017 issue of UGA Graduate features an in-depth article about cross-CZO grad student Diego Barcellos
Bruno Latour talks about the Calhoun CZO in Munich
08 Dec 2016 - Bruno Latour, anthropologist and philosopher of science, gave a talk on Critical Zone science and the Anthropocene entitled "From the Anthropocene...
Four soil pits installed in new Research Area 8!
21 Nov 2016 - Four soil pits were installed in new Research Area 8 at the Calhoun CZO on 21-22 November 2016 for easy access for soil sampling down to 2 meters.
Eight new soil pits dug at the Calhoun!
17 Oct 2016 - Eight soil pits were installed at the Calhoun CZO on 17-18 October 2016 for easy access for soil sampling down to 2 meters. Photo: Will Cook.
An illustrated introduction to the Calhoun Critical Zone Observatory!
22 Sep 2016 - An introduction to the Calhoun Critical Zone Observatory, by Justin Richardson and Dan Richter, illustrated by Alana McGillis has just been posted!...
First flux tower erected at the Calhoun CZO
17 Aug 2016 - On August 17, 2016 a crew from Georgia Tech led by graduate student Yao Tang and professor Jingfeng Wang, with a little help from the folks at Duke,...
Going deep! Gas wells installed at 8.5 m
14 Jul 2016 - Another Calhoun CZO record - gas reservoirs installed at 8.5m depth! Jay Austin, Zach Brecheisen, and Dan Richter only stopped at 8.5m because they...
TDR probes installed to monitor soil moisture
13 Jul 2016 - On July 13, 2016, Duke PhD candidate Zach Brecheisen, with assistance from his advisor Dan Richter and Jay Austin, installed TDR probes at 25-cm...
Historic Legacy Sediments Examined at 2016 Summer Science Meeting
03 Jun 2016 - The Calhoun CZO held its third annual Summer Science Days meeting. In the photo, Calhoun researchers discuss a 18th-19th century pine root...
Holcombe’s Branch floodplain profiles
05 Nov 2015 - Dan Richter has been excavating soils profiles up and down the banks of Holcombe's Branch in the Calhoun historic watersheds area, which will...
New study suggests bedrock weathering based on topography
30 Oct 2015 - St. Clair et al. suggest tectonic stresses interact with topography to influence bedrock weathering.
Bruno Latour, Science philosopher and anthropologist visits scientists at the Calhoun CZO
09 Oct 2015 - A dozen diverse scientists and scholars from five universities, united by their interest in Prof. Latour and in human-nature relations, traveled by...
Sino-USA CZO scientists meet to discuss future collaborations
09 Oct 2015 - About 60 Chinese and American critical zone scientists met in Guiyang, China for two days of discussions and presentations on the significance of...
CZNews: Fall 2015
01 Oct 2015 - The CZO National Office Newsletter CZNews: Fall 2015
Richter & Billings publish on Tansley’s ecosystem as Earth’s critical zone
19 Mar 2015 - Richter and Billings state the congruence of Tansley’s ecosystem concept with Earth’s critical zone.
Calhoun CZO Google Map
03 Mar 2015 - Map showing all research sites at the Calhoun CZO.
Dan Richter publishes on the Anthropocene
20 Jan 2015 - Dan Richter helps answer the question "When did the Anthropocene begin?"
Deep historic legacy sediments along Holcombe’s Branch
17 Dec 2014 - Examining historic legacy sediments along Holcombe's Branch.
Calhoun featured in Science
11 Nov 2014 - Dan Richter talks about the Calhoun CZO's "endangered" Cecil soil in a Science feature by Michael Tennesen
Richter presents talk at Stanford
08 Sep 2014 - Dan Richter gave a seminar in May 2014 at Stanford University’s Department of Environmental Earth System Science entitled “The changing...
Richter presents talk to Forest History Society
08 Sep 2014 - Dan Richter gave a lecture about the Calhoun CZO to an invited audience assembled by the Forest History Society in Durham NC on April 25,...
New CCZO publications
23 Jul 2014 - 1) A new history of Calhoun book chapter is being published this summer. Written by Dan Richter and co-authored by 19 scientists and land...
Introducing Calhoun CZO
03 Mar 2014 - The Calhoun CZO seeks to understand how Earth’s Critical Zones respond to and recover from severe erosion and land degradation.
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Events
2018 Southeast Friends of the Pleistocene Field Conference
Cross Keys, SC.AGU 2015: A Town Hall for the Network of CZOs
AGU 2015: A Town Hall for the Network of Critical Zone Observatories (TH25D)
San Francisco, CA - Moscone Center, Moscone West - 2010.Clay minerals in the Calhoun Critical Zone Observatory
Calhoun CZO, Union Co., SC.LTER/CZO working group- LTER triennial
Critical Zone Observatories/Long Term Ecological Research Network Collaboration
2015 LTER All Scientists Meeting- Estes Park, CO.Summer Science Meeting
Calhoun Experimental Forest, Union Co., SC.
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