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Scholarly Interest Report
         
Carrie A. Masiello
Professor
Professor of Earth Science and Chemistry
 
e-mail:masiello@rice.edu
 
  • B.A. physics and mathematics (1991) Earlham College, Richmond, Indiana
  • M.S. Environmental Science (1993) University of North Carolina, Chapel Hill, Chapel Hill, North Carolina
  • Ph.D. Earth System Science (1999) University of California, Irvine, Irvine, California
 
Primary Department
   Department of Earth, Environmental & Planetary Sciences
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Department Affiliations
 
  • Center for Biological and Environmental Nanotechnology
  • Center for the Study of the Environment and Society
  • Department of Chemistry
  • Environmental and Energy Systems Institute
  • Institute of Biosciences and Bioengineering
  • Shell Center for Sustainability
  •  
    Websites
     CV
     Rice Biochar C Sequestration Group
     
    Research Areas
     Carbon cycling, carbon sequestration, climate change, black carbon, terrestrial-river-ocean biosphere interactions
     
    Research Statement
     I study the Earth's carbon cycle on timescales from 5 years to 100,000 years. My main interests are in

    1. fundamental mechanisms of the carbon cycle and
    2. how humans are altering these mechanisms through combustion of fossil fuel, land use change, and erosion.


    My research uses natural radiocarbon (14C, half-life 5730 years) coupled with organic geochemical tools like wet chemical extractions, 13C NMR, physical separations, chromatographic and spectroscopic studies to address problems related to carbon and climate. By combining geochemical tools with a chronometer (14C) I can answer questions about both mechanisms and timescales of carbon movement between reservoirs. I am particularly interested in problems related to the movement of carbon between fast and intermediate-cycling carbon pools, including the terrestrial biosphere, the atmosphere, rivers, and ocean sediments. New research in my lab includes the development of organic carbon oxidation state (Cox) as a tracer of Earth system processes.
     
    Selected Publications
     Refereed articles
     

     Bell-Dereske, L., X. Gao, C.A. Masiello, R. Sinsabaugh, S. Emery, J.A. Rudgers. Plant-fungal symbiosis affects litter decomposition during primary succession.  In review, Oikos.

     
     

    Cheng, H.-Y., C.A. Masiello, G.N. Bennett, J.J. Silberg, Using volatile gas production to report on horizontal gene transfer dynamics in soil.  In review, Environmental Science and Technology.

     
     

    Gao, X., H.Y. Cheng, I. Del Valle, S. Liu, C.A. Masiello, J.J. Silberg.  Charcoal disrupts soil microbial communication through multiple mechanisms.  In review, Environmental Science and Technology.

     
     

    Gao, X., L.E. Driver, I. Kasin, C.A. Masiello, B. Dugan, and M. Ohlson.  Effect of environmental exposure on charcoal density and porosity in a boreal forest. In preparation.

     
     

    Gao, X., Norwood, M., Frederick, C., McKee, A., Masiello, C. A., & Louchouarn, P. (2016). Organic geochemical approaches to identifying formation processes for middens and charcoal-rich features. Organic Geochemistry, 94(C), 1–11. DOI: 10.1016/j.orggeochem.2016.01.007

     
     

    Hatton, P.-J., S. Chatterjee, T. Filley, K. Dastmalchi, A.F. Plante, S. Abiven, X. Gao, C.A. Masiello, S.W. Leaveitt, K.J. Nadelhoffer, R.E. Stark, J.A. Bird. Tree taxa and pyrolysis temperature interact to control the efficacy of pyrogenic organic matter formation.  In review, Biogeochemistry Letters.

     
     

    Liu, Z., Dugan, B., Masiello, C. A., & Barnes, R. T. (2016). Impacts of biochar concentration and particle size on hydraulic conductivity and DOC leaching of biochar–sand mixtures. Journal of Hydrology, 533, 461–472. http://doi.org/10.1016/j.jhydrol.2015.12.007

     
     

    Santin, C., Doerr, S. H., Kane, E. S., Masiello, C. A., Ohlson, M., Rosa, J. M., et al. (2016). Towards a global assessment of pyrogenic carbon from vegetation fires. Global Change Biology, 22(1), 76–91. DOI: 10.1111/gcb.12985.


     
     

    Sorrenti, G., C.A. Masiello, B. Dugan, M. Toselli.  Biochar physico-chemical properties as affected by environmental exposure.  In press, Science of the Total Environment.

     
     

    Sorrenti, G., C.A. Masiello, M. Toselli.  Biochar interferes with kiwifruit nutrition in calcareous soil.  In press, Geoderma.

     
     

    Valdez, Z., W.C. Hockaday, C.A. Masiello, M.E. Gallagher, G.P. Robertson, Nitrogen fertilizer and harvesting intensity influence the accrual of soil carbon and nitrogen stocks in switchgrass cropping systems.  In review, Global Change Biology-Bioenergy.

     
     

    Vidonish, J., K. Zygourakis, C.A. Masiello, G. Sabadell, P.J.J. Alvarez. Thermal treatment of hydrocarbon-impacted soils: A review of technology innovation for sustainable remediation.  In review, Engineering.

     
     

    Vidonish, J.E., K. Zygourakis, C.A. Masiello, X. Gao, J. Mathieu, P.J.J. Alvarez.  Pyrolytic treatment and fertility enhancement of soils contaminated with heavy hydrocarbons.  In press, ES&T

     
     

    Pyle, L. A., Hockaday, W. C., Boutton, T., Zygourakis, K., Kinney, T. J., & Masiello, C. A. (2015). Chemical and Isotopic Thresholds in Charring: Implications for the Interpretation of Charcoal Mass and Isotopic Data. Environmental Science and Technology, 49(24), 14057–14064. DOI: 10.1021/acs.est.5b03087

     
     

    Sun, H., C. Brewer, C.A. Masiello, and K. Zygourakis. Nutrient Transport in Soils Amended with Biochar: A transient model with two stationary phases and intraparticle diffusion (2015) Industrial Engineering and Chemistry Research, 54(16), 4123-4135, DOI: 10.1021/ie503893t.


     
     

    Wiedemeier, D.B., S. Abiven, W.C. Hockaday, M. Keiluweit, M. Kleber, C.A. Masiello, A.V. McBeath, P.S. Nico, L.A. Pyle, M.P.W. Schneider, R.J. Smernik, G.L.B. Wiesenberg, M.W.I. Schmidt (2015) Aromaticity and the degree of aromatic condensation of chars. Organic Geochemistry, 78, 135-143, DOI: 10.1016/j.orggeochem.2014.10.002.


     
     

    Coppola, A. I., Ziolkowski, L. A., Masiello, C. A., & Druffel, E. R. M. (2014). Aged black carbon in marine sediments and sinking particles. Geophysical Research Letters, 41(7), 2427–2433. http://doi.org/10.1002/2013GL059068

     
     

    Barnes, R.T., M.E. Gallagher, C.A. Masiello, Z. Liu, B. Dugan (2014) Biochar-induced changes in hydraulic conductivity and dissolved nutrient fluxes constrained by laboratory experiments. PLOS One, DOI: 10.1371/journal.pone.0108340.


     
     

    Brewer, C.E., Chuang, V.J., C.A. Masiello, H. Gonnermann, X. Gao, B. Dugan, L.E. Driver, P. Panzacchi, K. Zygourakis, C.A.Davies (2014) New approaches to measuring biochar density and porosity. Biomass & Bioenergy, 66, 176-185, doi: 10.1016/j.biombioe.2014.03.059.


     
     

    Gallagher, M.E., C.A. Masiello, W.C. Hockaday, S. Snapp, C.P. McSwiney, and J.A. Baldock (2014)  Controls on the oxidative ratio of net primary production in agricultural ecosystems. Biogeochemistry, 121(3), 581-594, DOI: 10.1007/s10533-014-0024-9.

     
     

    Spokas, K.A., J.M. Novak, C.A. Masiello, M.G Johnson, E.C. Colosky, J.A. Ippolito, C. Trigo (2014) Physical disintegration of biochar: an overlooked process. Environmental Science and Technology Letters, 1, 326-332, doi: 10.1021/ez500199t.

     
     

    Williams, E.K., B.E. Rosenheim, A.P. McNichol, C.A. Masiello (2014) Charring and non-additive chemical reactions during ramped pyrolysis: applications to the characterization of sedimentary and soil organic material.  Organic Geochemistry, 77, 106-114, DOI: 10.1016/j.orggeochem.2014.10.006.


     
     

    LeCroy, C., C.A. Masiello, J.A. Rudgers, W.C. Hockaday, J.J. Silberg, Nitrogen, biochar, and mycorrhizae: alteration of the symbiosis and oxidation of the char surface. Soil Biol. Biochem., 58, 248-254, doi: 10.1016/j.soilbio.2012.11.023.

     
     

    Masiello, C.A., Y. Chen, X. Gao, S. Liu, S. Cheng, M.R. Bennett, J.A. Rudgers, D.S. Wagner, K. Zygourakis, J.J. Silberg (2013) Pyrolysis temperature determines biochar effects on microbial communication.  ES&T, 47, 11496-11503, doi: 10.1021/es401458s.

     
     

    Schneider, M.P.W., L.A. Pyle, K. Clark, W.C. Hockaday, C.A. Masiello, M.W.I. Schmidt (2013) A ‘Molecular Thermometer’ to estimate the charring temperature of wildfire charcoals. ES&T, 47, 11490-11495, doi: 10.1021/es401430f.

     
     

    Webber, J.B.W., Corbetter, P., Semple, K.T., Ogbonnaya, U., Teel, W.S., Masiello, C.A., Fisher, Q.J., Valenza J.J. II, Song, Y.-Q., Hu, Q.  An NMR study of porous rock and biochar containing organic material (2013) Microporous and Mesoporous Materials 178, 94-98, doi: 10.1016/j.micromeso.2013.04.004.

     
     

    Worrall, F., G.D. Clay, C.A. Masiello, G. Mynheer.  Estimating the oxidative ratio of the global terrestrial biosphere carbon – the global terrestrial carbon sink has been underestimated (2013) Biogeochemistry, 115, 23-32, doi: 10.1007/s10533-013-9877-6.

     
     

    Hockaday, W.C., M.E. Gallagher, C.A. Masiello, J.A. Baldock, C.M. Iversen, R.J. Norby.  Elevated atmospheric carbon dioxide concentrations cause an increased soil carbon oxidation state:  implications for future carbon sinks.  In revision, JGR-Biogeosciences.

     
     

    *Kinney, T.J., C.A. Masiello, B. Dugan, *W.C. Hockaday, *M.R. Dean, K. Zygourakis, and *R.T. Barnes.  Hydrologic properties of biochars produced at different temperatures. Biomass and Bioenergy, 41, 34-43, doi: 10.1016/j.biombioe.2012.01.033.

     
     

    Koarashi, J., *W.C. Hockaday, C.A. Masiello, and S.E. Trumbore (2012) Nature and dynamics of decadally cycling carbon in subsurface soils. JGR-Biogeosciences, 117, G03033, doi:10.1029/2012JG002034.

     
     

    Dong, L., *W.C. Hockaday, C.A. Masiello, P.J.J. Alvarez (2011) Earthworm avoidance of biochar can be mitigated by wetting.  Soil Biology and Biochemistry, 43, 1732-1737, doi: 10.1016/j.soilbio.2011.04.019. 

     
     

    Lehmann, J., M. Rillig, J. Thies, C.A. Masiello, W.C. Hockaday, and D. Crowley (2011) Biochar effects on soil biota -- a review.  Soil Biology and Biochemistry, 43, 1812-1836, doi: 10.1016/j.soilbio.2011.04.022.

     
     

    Sun, H., W.C. Hockaday, C.A. Masiello, and K. Zygourakis.  Multiple controls on the chemical and physical structure of biochars. Industrial & Engineering Chemistry Research, 51(9), 3587-3597, doi: 10.1021/ie201309r.

     
     

    Kane, E.S., W.C. Hockaday, M.R. Turetsky, C.A. Masiello, D.W. Valentine, B.P. Finney, J.A. Baldock (2010) Topographic controls on black carbon accumulation in Alaskan black spruce forest soils:  implications for organic matter dynamics. Biogeochemistry, 100, 39-56. doi: 10.1007/s10533-009-9403-z.

     
     

    Nguyen, B.T., J. Lehmann, W.C. Hockaday, S. Joseph, C.A. Masiello (2010) Temperature sensitivity of black carbon decomposition and oxidation.  Environmental Science and Technology, 44(9), 3324-3331, doi: 10.1021/es903016y.

     
     

    Gallagher, M.E., W.C. Hockaday, C.A. Masiello, S. Snapp, C.P. McSwiney, J.A. Baldock. (2011) Biochemical Disincentives to Fertilizing Cellulosic Ethanol Crops. Environmental Science and Technology.

     
     

    Lehmann, J., M. Rillig, J. Thies, C.A. Masiello, W.C. Hockaday, and D. Crowley (in press) Biochar effects on soil biota -- a review.  Soil Biology and Biochemistry.

     
     

     Zeng, F.-W., C.A. Masiello, and W.C. Hockaday (2011)  Controls on the origin and cycling of riverine dissolved inorganic carbon in the Brazos River, Texas. Biogeochemistry. doi:10.1007/s10533-010-9501-y.

     
     

     Zeng, F.-W. and C.A. Masiello (2010) CO2 evasion from two subtropical rivers in North America.  Biogeochemistry. doi: 10.1007/s10533-010-9417-6.

     
     

    Hockaday, W.C., C.A. Masiello, J.T. Randerson, R.J. Smernik, J.A. Baldock, O.A. Chadwick, J.W. Harden (2009)  The measurement of soil carbon oxidation state and oxidative ratio by nuclear magnetic resonance.  Journal of Geophysical Research-Biogeosciences, 114, G02014, doi: 10.1029/2008JG000803.

     
     

    Schreiner, K.M., T.R. Filley, R.A. Blanchette, B.B. Bowen, R.D. Bolskar, W.C. Hockaday, C.A. Masiello, and J.W. Raebiger (2009) White-Rot Basidiomycete-mediated Decomposition of C60 Fullerol.  Environmental Science and Technology, 43(9), 3162-3168.

     
     

     Masiello, C.A., M. E. Gallagher, J. T. Randerson, R. M. Deco, and O. A. Chadwick (2008), Evaluating two experimental approaches for measuring ecosystem carbon oxidation state and oxidative ratio, Journal Of Geophysical Research-Biogeosciences, 113, G03010, doi: 10.1029/2007JG000534.

     
     

    Czimczik, C. I., and C.A. Masiello (2007), Controls on black carbon storage in soils, Global Biogeochemical Cycles, 21.

     
     

    Hammes, K., M. W. I. Schmidt, R. J. Smernik, L. A. Currie, W. P. Ball, T. H. Nguyen, P. Louchouarn, S. Houel, O. Gustafsson, M. Elmquist, G. Cornelissen, J. O. Skjemstad, C.A. Masiello, J. Song, P. Peng, S. Mitra, J. C. Dunn, P. G. Hatcher, W. C. Hockaday, D. M. Smith, C. Hartkopf-Froeder, A. Boehmer, B. Luer, B. J. Huebert, W. Amelung, S. Brodowski, L. Huang, W. Zhang, P. M. Gschwend, D. X. Flores-Cervantes, C. Largeau, J. N. Rouzaud, C. Rumpel, G. Guggenberger, K. Kaiser, A. Rodionov, F. J. Gonzalez-Vila, J. A. Gonzalez-Perez, J. M. de la Rosa, D. A. C. Manning, E. Lopez-Capel, and L. Ding (2007), Comparison of quantification methods to measure fire-derived (black/elemental) carbon in soils and sediments using reference materials from soil, water, sediment and the atmosphere, Global Biogeochemical Cycles, vol 21; doi: 10.1029/2006GB002914.

     
     

    Randerson, J. T., C.A. Masiello, C. J. Still, T. Rahn, H. Poorter, and C. B. Field (2006), Is carbon within the global terrestrial biosphere becoming more oxidized? Implications for trends in atmospheric O-2, Global Change Biology, 12, 260-271.

     
     

    Treseder, K. K., M. S. Torn, and C.A. Masiello (2006), An ecosystem-scale radiocarbon tracer to test use of litter carbon by ectomycorrhizal fungi, Soil Biology & Biochemistry, 38, 1077-1082.

     
     

    Basile-Doelsch, I., R. Amundson, W. E. E. Stone, C. A. Masiello, J. Y. Bottero, F. Colin, F. Masin, D. Borschneck, and J. D. Meunier (2005), Mineralogical control of organic carbon dynamics in a volcanic ash soil on La Reunion, European Journal of Soil Science, 56, 689-703.

     
     

    Mayorga, E., A. K. Aufdenkampe, C.A. Masiello, A. V. Krusche, J. I. Hedges, P. D. Quay, J. E. Richey, and T. A. Brown (2005), Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers, Nature, 436, 538-541.

     
     

    Masiello, C.A., and E. R. M. Druffel (2001), The isotope geochemistry of the Santa Clara River, Global Biogeochemical Cycles, 15, 407-416.

     
     

     Masiello, C.A. (2004), New directions in black carbon organic geochemistry, Marine Chemistry, 92, 201-213.

     
     

    Masiello, C. A., O. A. Chadwick, J. Southon, M. T. Torn, and J. W. Harden (2004), Weathering Controls on Mechanisms of Carbon Storage in Grassland Soils, Global Biogeochemical Cycles, 18, doi:  10.1029/2004GB002219.

     
     

    Dickens, A. F., Y. Gelinas, C.A. Masiello, S. Wakeham, and J. I. Hedges (2004), Reburial of fossil organic carbon in marine sediments, Nature, 427, 336-339.

     
     

    Currie, L. A., B. A. Benner, J. D. Kessler, D. B. Klinedinst, G. A. Klouda, J. V. Marolf, J. F. Slater, S. A. Wise, H. Cachier, R. Cary, J. C. Chow, J. Watson, E. R. M. Druffel, C. A. Masiello, T. I. Eglinton, A. Pearson, C. M. Reddy, O. Gustafsson, J. G. Quinn, P. C. Hartmann, J. I. Hedges, K. M. Prentice, T. W. Kirchstetter, T. Novakov, H. Puxbaum, and H. Schmid (2002), A critical evaluation of interlaboratory data on total, elemental, and isotopic carbon in the carbonaceous particle reference material, NIST SRM 1649a, Journal of Research of the National Institute of Standards and Technology, 107, 279-298.

     
     

     Baldock, J. A., C.A. Masiello, Y. Gélinas, and J. I. Hedges (2004), Cycling and composition of organic matter in terrestrial and marine ecosystems, Marine Chemistry, 92, 39-64, 10.1016/j.marchem.2004.06.016.

     
     

    Bauer, J. E., E. R. M. Druffel, D. M. Wolgast, S. Griffin, and C.A. Masiello (1998), Distributions of dissolved organic and inorganic carbon and radiocarbon in the eastern North Pacific continental margin, Deep-Sea Res Pt Ii-Top St Oce, 45, 689-71.

     
     

     Treseder, K. K., C.A. Masiello, J. L. Lansing, and M. F. Allen (2004), Species-specific measurements of ectomycorrhizal turnover under N-fertilization: combining isotopic and genetic approaches, Oecologia, 138, 419-425.

     
     

    Wakeham, S. G., J. Forrest, C.A. Masiello, Y. Gelinas, C. R. Alexander, and P. R. Leavitt (2004), Hydrocarbons in Lake Washington sediments. A 25-year retrospective in an urban lake, Environmental Science & Technology, 38, 431-439.

     
     

     Masiello, C.A., and E. R. M. Druffel (2003), Organic and black carbon 13C and 14C through the Santa Monica Basin oxic-anoxic transition, Geophysical Research Letters, 30, doi 10.1029/2002GL015050.

     
     

    M.W.I. Schmidt, C.A. Masiello, J.O. Skjemstad "Final recommendations for reference materials in black carbon analyses." EOS - Transactions of the American Geophysical Union, 84 (2003) : 582-583.

     
     

     Masiello, C.A., E. R. M. Druffel, and L. A. Currie (2002), Radiocarbon measurements of black carbon in aerosols and ocean sediments, Geochimica Cosmochimica Acta, 66, 1025-1036.

     
     

    Masiello, C.A., E. R. M. Druffel, and J. E. Bauer (1998), Physical controls on dissolved inorganic radiocarbon variability in the California Current, Deep-Sea Res Pt II-Top St Oce, 45, 617-642.

     
     

    Masiello, C.A., and E. R. M. Druffel (1998), Black carbon in deep-sea sediments, Science, 280, 1911-1913.

     
     

    Masiello, C.A., and E. R. M. Druffel (1998), Black carbon in deep-sea sediments, Science, 280, 1911-1913.

     
     Articles
     

    Masiello, C. A., & Louchouarn, P. (2013). Fire in the Ocean. Science, 340(6130), 287–288. doi:10.1126/science.1237688.

     
     

    Masiello, C.A. (2007), Carbon cycle - Quick burial at sea, Nature, 450, 360-361.

     
     

    Schmidt, M.W.I., and C.A. Masiello (2007), Interdisciplinary Intercomparison of Black Carbon Analysis in Soil and Sediment, Eos Trans. AGU, 88, 344, doi:10.1029/2007EO350006.

     
     Book chapters
     

    Gao, X., and C.A. Masiello. ”Chapter 19: Analysis of biochar porosity by pycnometry”, in Methods of Biochar Analysis for Environmetal Applications, edited by Balwant Singh, Marta Camps, and Johannes Lehmann, in revision.

     
     

    Masiello, C.A., Dugan, B., Brewer, C.E., Spokas, K., Novak, J.M., Liu, Z., Sorrenti, G. Biochar effects on Soil Hydrology. In Biochar for Environmental Management, ed. Johannes Lehmann, published by Earthscan. in press, 2014.

     
    Presentations
     Invited Talks
     

    C.A. Masiello.  Charcoal in the Earth System.  Tulane University department of Earth and Environmental Sciences, January 2012.

     
     

    C.A. Masiello, Z. Liu, K. Ziegelgruber, B. Dugan, H. Gonnermann, V. Chuang, K. Zygourakis. Density and porosity as controls on charcoal storage in soils.  European Geosciences Union, Vienna, Austria, April 2012.

     
     

    C.A. Masiello, M.E. Gallagher, W.C. Hockaday.  Biochemical Yields in Biofuels Measured Through NMR and NIR. USDA Sustainable Bioenergy and Bioproducts Principal Investigators Meeting, Oct 2011

     
     

    C.A. Masiello. Carbon Oxidation and Reduction in the Earth System.  Yale University Symposium:  Frontiers in Earth Surface System Interactions.  New Haven, CT, May 2011.

     
     

    C.A. Masiello. Carbon Oxidation and Reduction in the Earth System.  St. Andrews University School of Geography and Geoscience, St. Andrews, Scotland, May 2011.

     
     

    C.A. Masiello.  Charcoal in the Earth System.  Baylor University department of Geology, Oct. 2011.

     
     

    C.A. Masiello.  Charcoal in the Earth System.  Michigan State University department of Geological Sciences, Oct. 2011

     
     

    C.A. Masiello.  Charcoal in the Earth System.  Virginia Commonwealth University department of Biology, Nov. 2011.

     
     

    C.A. Masiello.  Connecting Aerosol Measurements to the Global Black Carbon Cycle.  Invited speaker, Aerosol Metrology for  Climate Workshop, NIST, Gaithersburg, MD, March 2011.

     
     

    C.A. Masiello.  Ecosystem Oxidative Ratios in the Global Carbon Cycle. Invited seminar, Texas A&M University Ecology and Evolutionary Biology Program, April 2011.

     
     

    C.A. Masiello.  Grand Challenges in Earth System Science for the 21st Century, UC Irvine Earth System Science 20th Anniversary Celebration, Irvine, California, Sept. 2011.

     
     

    C.A. Masiello, T.J. Pérez.  Two Modes of Human River Pollution:  Comparing U.S. and Latin American Watershed Nutrient Contamination. Rice University Symposium: the City and the Environment in Latin America: An Interdisciplinary Perspective.  Houston, TX, January 2011.

     
     

    Speaker.  "Using NMR to understand the ecological roles of charcoal." Soil Ecology Society, Burlington, VT. (July 13, 2009) With William C. Hockaday, Michelle Dean

     
     

    "Black carbon inventories, fluxes, and mechanisms: where are we?." Joint Meeting: Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Sciences Society of America, Houston, TX. (October 2008)

     
     

    "Towards soil and sediment inventories of black carbon." American Geophysical Union, San Francisco. (Dec 15, 2008)

     
     

    "Rejunvenation and aging of carbon in rivers: Sources, exports, and interactions among fractions in the Amazon and other systems." American Geophysical Union, San Francisco. (Dec 12-17, 2007) With Mayorga, E., Aufdenkampe, A.K., Masiello, C.A., Krusche, A.V., Quay, P.D., Richey, J.E., Seitzinger, S.

     
     

    "Fate of fossil fuel CO2 and Potential for biospheric sequestration." Rice University/Shell Internal Symposium, Rice University. (Oct 6, 2006)

     
     

    "Greenhouse Gases and the Carbon Cycle." MIT Enterprise Forum of Texas, (Sept 20, 2006)

     
     

    "Introduction to the Carbon Cycle." Rice-HISD Elementary Model Science Lab program, Sanchez Elementary School. (Dec 6, 2006)

     
     

    "Measuring the Carbon Oxidation State of the Earth System (and KBS)." Kellogg Biological Station, Michigan State University, Hickory Corners, MI. (April 29, 2006)

     
     

    seminar speaker.  "Measuring the carbon oxidation state of the Earth System." Texas A&M Galveston. (May 2, 2006)

     
     

    "Why are there no black soils in the boreal regions." Charcoal to Black carbon: defining common issues of quantification and interpretation in archaeological, palaeoenvironmental and carbon cycle research, University of St. Andrews, Edinburgh. (August 2005) With Czimczik, C.I.

     
     

    "Measuring the Oxidation State of Organic Carbon in the Earth System." Institutio Venezolano de Investigaciones Cientificas, Caracas, Venezuela. (September 28, 2004)

     
     

    "Measuring the oxidation state of organic carbon in the Earth System." University of Texas, Marine Sciences Institute. (November 15, 2004)

     
     Keynote Speaker
     

    C.A. Masiello, B. Dugan, K. Zygourakis, H. Gonnermann, Z. Liu, K. Ziegelgruber, V. Chuang Physical controls on organic matter stability. Keynote, European Geosciences Union, Vienna, Austria, April 2012.

     
     

    symposium organizer.  "How to Build a Black Soil." Rice University/TAMU-Galveston joint BC-nanocarbon symposium, Rice University. (August 25, 2006) With Claudia Czimczik

     
     Lectures
     

    W.C. Hockaday, M.E. Gallagher, C.A. Masiello, L.A. Pyle, W.H. Polley, J.A. Baldock.  Biochemical inventories as a tool to assay ecosystem carbon dynamics. Ecological Society of America Meeting, August 2011, San Antonio, TX.

     
     

    C.A. Masiello, B. Dugan, K.Zygourakis, W.C. Hockaday, T.J. Kinney, M.R. Dean, R.T. Barnes. Assessing Controls on the Hydrologic Behavior of Biochars. 3rd Annual Biochar conference, UK Biochar Centre, Edinburgh, UK.  May 2011.

     
     

    M.P.W. Schneider, C.A. Masiello, M.W.I. Schmidt.  Can Molecular Markers for Pyrogenic Carbon Help to Reconstruct Wildfire Temperatures? European Geosciences Union Meeting 2011, Vienna, Austria, April 2011.

     
     

    H. Sun, C.A. Masiello, K. Zygourakis.  Characterizing the Pore Structure of Biochars: An New Approach Based on Multiscale Pore Structure Models and Reactivity Measurements. AIChE Annual Meeting, Minneapolis, MN. October 16-21, 2011.

     
     

    M.E. Gallagher, C.A. Masiello, W.C. Hockaday, S. Snapp, C.P. McSwiney, and J.A. Baldock. Estimating Oxidative Ratio in U.S. Agricultural Ecosystems.  Ecological Society of America Meeting, August 2011, San Antonio, TX.

     
     

    C.A. Masiello, M.E. Gallagher, W.C. Hockaday.  Making and Interpreting High Precision Ecosystem Oxidative Ratio Measurements.  Ecological Society of America Meeting, August 2011, San Antonio, TX.

     
     

    H. Sun, W.C. Hockaday, C.A. Masiello, K. Zygourakis. Soil Amendment by Biochar: Theoretical and Experimental Studies on the Dynamic Adsorption of Ammonium Nitrate in Soil/Biochar Mixtures.  AIChE Annual Meeting, Minneapolis, MN. October 16-21, 2011.

     
     

    M.E. Gallagher, W.C. Hockaday, C.A. Masiello, J.A. Baldock, S. Snapp, C.P. McSwiney. Using 13C Nuclear Magnetic Resonance Spectroscopy to Estimate Biochemical Stocks and Biofuel Feedstock Quality. ASA-CSSA-SSSA Annual International Meeting: San Antonio, TX, October 2011.

     
     

    W.C. Hockaday, S. Kim, P.G. Hatcher, C.A. Masiello.  Comparing the Molecular Structures of Black Carbon in Soil and Water to Constrain Processes of Formation and Decomposition.  American Chemical Society National Meeting, San Francisco, March 21-25, 2010.

     
     

     H. Sun, W.C. Hockaday, C.A. Masiello, K. Zygourakis.  Physical and Chemical Structure Analysis of Biochars Produced from Different Feedstocks and Under a Variety of Pyrolysis Conditions.  American Institute of Chemical Engineers Annual Meeting (AiChE), Salt Lake City, Nov 7-12, 2010.

     
     

    "Biogeochemistry of charcoal in the environment: carbon cycle roles and carbon sequestration options." Rice University Dean of Natural Sciences Lecture Series, Rice University. (March 19, 2008)

     
     

    "Changes in plant biochemistry under varying nitrogen fertilization: implications for the soil carbon pools." Joint Meeting: Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Sciences Society of America, Houston, TX. (October 2008) With Morgan E. Gallagher, William C. Hockaday, Claire P. McSwiney, G. Philip Robertson, Jeffrey A. Baldock

     
     

    "Controls on the Origin and Cycling of Riverine Dissolved Inorganic Carbon in the Brazos River, Texas." American Geophysical Union, San Francisco. (Dec 15, 2008) With Zeng, F; Masiello, C.A., Hockaday, W.C.

     
     

    "Impact of urbanization on CO2 fluxes and sources from Houston-area watersheds." Joint Meeting: Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Sciences Society of America, Houston, TX. (October 2008) With Fanwei Zeng

     
     

    "Nitrogen Fertilization of Corn: Plant Biochemistry Effects & Carbon Cycle Implications." Spring American Geophysical Union Meeting, (May 2008) With M.E. Gallagher, Hockaday, W.C., Masiello, C.A., McSwiney, C.P., Robertson, G.P., Baldock, J.A.

     
     

    "Plant Biochemical Shifts Under Varying Nitrogen Conditions: Implications for the Carbon Cycle." USDA, Temple, TX. (spring 2008) With ME Gallagher, WC Hockaday, CA Masiello, CP McSwiney, GP Robertson, and JA Baldock

     
     

    "The Effects of Nitrogen Fertilization of a Corn Ecosystem’s Oxidative Ratio and Its Carbon Cycle Implications." American Geophysical Union, San Francisco. (Dec 15, 2008) With ME Gallagher, WC Hockaday, CA Masiello, CP McSwiney, GP Robertson, and JA Baldock

     
     

    "Building a Black Soil." European Geoscience Union, Vienna, Austria. (April 25, 2005) With C. Czimczik

     
     

    "Comparative analyses of reference materials for organic geochemical studies of black carbon." European Geoscience Union, Vienna. (April 2005) With MWI Schmidt, JO Skjemstad, W Ball, L Currie, DM Smith, the Ring Team

     
     

    "The natural range in oxidative ratio of environmental organic matter." American Chemical Society national meeting, San Diego. (March 17, 2005) With J.A. Baldock, J.T. Randerson, O.A. Chadwick, R.J. Smernik, and R.M. Deco, J.W. Harden, Michelle C. Mack

     
     

    "14C and 13C Constraints on CO2 Cycling in Pristine and Deforested Lowland Amazon Rivers." American Geophysical Union, San Francisco, CA. (Fall 2004) With E. Mayorga, A.K. Aufdenkampe, A.V. Krusche, P.D. Quay, J.E. Richey.

     
     

    "Aliphatic and aromatic hydrocarbons in Lake Washington sediments: A 25-year retrospective." Spring AGU. (2001) With Wakeham, S., J. Forrest, A. Biersmith, Y. Gelinas, C. Alexander

     
     

    "Black carbon 14C in the Santa Monica basin: riverine delivery and sedimentary accumulation." Ninth Annual Goldschmidt Conference, Harvard University, Cambridge, MA. (1999) With E.R.M. Druffel, and S. Griffin

     
     

    "Black carbon in ocean sediments and a small river." Dissertation Symposium in Chemical Oceanography (DISCO XV) NSF/ONR/NOAA, Honolulu, Hawaii. (May 1999)

     
     

    "DIC cycling from 14C And 13C isotopes in mountain and lowland rivers in the Amazon Basin." ASLO, Victoria, Canada. (2002) With Mayorga, E., Aufdenkampe, A.K., Quay, P.D., Hedges, J.I., Richey, J.E., Krusche, A.V., Llerena, C.A., Forsberg, B.R., Quintanilla, J.

     
     

    "Development of standards for organic geochemical studies of black carbon." Gordon Research Conference on Organic Geochemistry, Plymouth, New Hampshire. (2000) With M.W.I. Schmidt, W.P. Ball, L.A. Currie, J.O. Skjemstad, D.M. Smith

     
     

    "Effects of mineralogy on the storage rates of organic carbon classes across a soil chronosequence." 17th International Radiocarbon Conference, Cambridge, MA. (1999) With E.R.M. Druffel, and S. Griffin

     
     

    "Estimating elemental composition and oxidation state of natural organic matter using 13C NMR." Australian Organic Geochemistry/International Humic Substances Society joint meeting, Sydney, Australia. (February 2004) With Deco, R.M., Randerson, J.T., Chadwick, O.A., Baldock, J.A.

     
     

    "Interlaboratory Data on Elemental and Isotopic Carbon in the Carbonaceous Particle Reference Material, NIST SRM 1649a." Gordon Research Conference on Organic Geochemistry, Plymouth, New Hampshire. (2000) With L.A. Currie, B.A. Benner, Jr., R. Cary, E.R.M. Druffel, T.I. Eglinton, P.C. Hartmann, J.D. Kessler, D.B. Klinedinst, G.A. Klouda, J.V. Marolf, A. Pearson, J.G. Quinn, C.M. Reddy, J.F. Slater, and S.A. Wise

     
     

    "Is the oxidative ratio of the terrestrial biosphere changing? Implications for trends in atmospheric O2." Ecological Society of America, (April, 2004) With Still, C.J., Rahn, T., Field, C.B. , Randerson, J.T.

     
     

    "Isotopic and genetic assessments of ectomycorrhizal turnover under N-fertilization." Ecolog.Soc. Am, (Spring Meeting, 2001) With Treseder, K.K., Lansing, J., Allen M.F

     
     

    "Mineralogy and carbon storage across a soil chronosequence." Gordon Research Conference on Organic Geochemistry, Plymouth, New Hampshire. (2000) With M.W.I. Schmidt, W.P. Ball, L.A. Currie, J.O. Skjemstad, D.M. Smith

     
     

    "New Directions in Black Carbon Organic Geochemistry." Friday Harbor Symposium in honor of John Hedges: New Directions in Marine Biogeochemistry, (August 2003)

     
     

    "Organic Carbon Oxidative State (Cox) and Oxidative Ratio (OR): Two New Parameters for Carbon Cycle Studies." Kearney Foundation Soil Carbon Storage Workshop, Davis, CA. (September 2003) With Deco, R.M., Randerson, J.T., Baldock, J.A., and Chadwick, O.A.

     
     

    "Oxidation state of natural organic materials as an organic geochemical tracer: Prospects for measurement via 13C NMR." ACS National Meeting, Anaheim, CA. (March 2004) With Baldock, J.A., Smernik, R., Chadwick, O.A., Randerson, J.T.

     
     

    "Recycled Graphitic Carbon: Presence and Distribution off the Washington Coast." INQUA, (July 2003) With Angela F. Dickens, Yves Gelinas, John I. Hedges

     
     

    "Reference materials for organic geochemical studies of black carbon." 20th International Meeting on Organic Geochemistry, Nancy, France. (10-14 Sept. 2001) With Schmidt M.W.I., Ball W.P., Currie, L.A., Czimczik C.I., Gelinas Y., Glaser B., Kuhlbusch T.A.J., Prentice K.M., Skjemstad J.O., Smith D.M.

     
     

    "Soil organic radiocarbon and mineralogy at two coastal California sites." Fall AGU, (2001) With Chadwick, O.A., and Torn, M.

     
     

    "The use of radiocarbon to examine turnover under N fertilization in a major microbial group." Spring AGU, (2001) With Treseder, K.K., Lansing, J., and M.F. Allen

     
     Posters
     

    . C.A. Masiello, L. Driver, H. Gonnermann, B. Dugan, V. Chuang, Z. Liu, K. Zygourakis.  Black Carbon:  Does it Sink or Float Black carbon:  Does it sink or float? AGU/ASLO Ocean Sciences Meeting, Salt Lake City UT, February 2012.

     
     

    M. Schulz, C. Lawrence, D. Stonestrom, J.W. Harden, T. Bullen, A. White, J. Fitzpatrick, C.A. Masiello.  Marine Terrace Soils Along the West Coast of North America:  an Archive of Climate Control? 2011 Catchment Science Gordon Research Conference, July 9-15, 2011.

     
     

    C.A. Masiello, M.E. Gallagher, W.C. Hockaday.  Making and Interpreting High Precision Ecosystem Oxidative Ratio Measurements.  North American Carbon Program (NACP) All-Investigators Meeting, New Orleans, LA, February 2011.

     
     

    T.J. Pérez, C.A. Masiello, A. Giuliante, R. Rasse, W.C. Hockaday, J.C. Hernandez, R.T. Barnes, L. Donoso, A. Rojas.  Two Modes of Carbon and Sediment Transport:  Developed vs Developing World.  2011 Catchment Science Gordon Research Conference, July 9-15, 2011.

     
     

    M.E. Gallagher, C.A. Masiello, W.C. Hockaday, S. Snapp, C.P. McSwiney, and J.A. Baldock. Variation in the Oxidative Ratio of US Agricultural Ecosystems from 1930 to 2010. North American Carbon Program (NACP) All-Investigators Meeting, New Orleans, LA, February 2011.

     
     

    C.A. Masiello, W.C. Hockaday, K. Zygourakis, B. Dugan, J.A. Rudgers, P.J.J. Alvarez, T.W. Boutton, L.A. Pyle, T.J. Kinney, H. Sun, D. Li.  Biochar Research at Rice University:  An Overivew.  Geological Society of America, Denver, CO, 2010.

     
     

    M.E. Gallagher, W.C. Hockaday, C.A. Masiello, S. Snapp, C. McSwiney, J.A. Baldock.  Biochemical Disincentives to Fertilizing Cellulosic Ethanol Crops. Fall American Geophysical Union Meeting, San Francisco, Dec. 13-18, 2010.

     
     

     C.A. Masiello, M.E. Gallagher, W.C. Hockaday.  Global Carbon Reservoir Oxidative Ratios.  Fall American Geophysical Union Meeting, San Francisco, Dec. 13-18, 2010.

     
     

    W.C. Hockaday, Y.-S. Hwang, Q. Li, C.A. Masiello.  Mass Spectrometric Evidence of Non-Colloidal Fullerenes in Waters Containing Natural Organic Matter. American Chemical Society National Meeting, San Francisco, March 21-25, 2010.

     
     

     L.A. Pyle, W.C. Hockaday, C.A. Masiello, T.W. Boutton, C. LeCroy. Production and Isotopic Composition of Black Nitrogen Following Experimental Charring of Plant Materials. Fall American Geophysical Union Meeting, San Francisco, Dec. 13-18, 2010

     
     

    W.C. Hockaday, M.E. Gallagher, C.A. Masiello, L.A. Pyle, W.H. Polley, J.A. Baldock.  The Response of Soil Carbon Stocks to Changing Atmospheric Carbon Dioxide Concentrations are Soil-Type-Dependent. Fall American Geophysical Union Meeting, San Francisco, Dec. 13-18, 2010.

     
     F.W. Zeng and C.A. Masiello
     
     

    "Phytotoxicity and Plant Productivity Analysis of Tar-enriched Biochars." American Geophysical Union, San Francisco. (Dec 15, 2008) With Keller, M.L.; Masiello, C.A.; Dugan, B.; Rudgers, J.A.; Capareda, S

     
     

    "Accuracy and precision in measurements of biomass oxidative ratio and carbon oxidation state." American Geophysical Union, San Francisco. (Dec 12-17, 2007) With Gallagher, M.E., Masiello, C.A., Randerson, J.T., Chadwick, O.A., Robertson, G.P.

     
     

    "Analysis of changes in biochemical composition under free-air CO2 enrichment by 13C nuclear magnetic resonance: Leaf litter, roots, and soils from Oak Ridge." American Geophysical Union, San Francisco. (Dec 12-17, 2007) With Hockaday, W.C., Masiello, C.A., Baldock, J.A., Iverson, C.M., Norby, R.J.

     
     

    "Effect of urbanization on river CO2 emissions." American Geophysical Union, San Francisco. (Dec 12-17, 2007) With F. Zeng, Masiello, C.A.

     
     

    "Natural variation in the carbon oxidation state and oxidative ratio of a deciduous forest." American Geophysical Union, San Francisco. (Dec 12-17, 2007) With Masiello, C.A., Calligan, L.J., Gallagher, M.E., Hockaday, W.C., Robertson, G.P.

     
     

    "Tracking the carbon oxidation state and oxidative ratio of the terrestrial biosphere." North American Carbon Program, Colorado Springs, CO. (Jan 24-27, 2007) With W.C. Hockaday, M.E. Gallagher, J.T. Randerson, O.A. Chadwick, J.A. Baldock, R.J. Smernik

     
     

    "Progress in the measurement of organic carbon oxidation state (Cox) via 13C NMR." 3rd European Symposium on NMR Spectroscopy in Soil, Geo, and Environmental Sciences, Freising, Germany. With W.C. Hockaday, J.A. Baldock, R.J. Smernik, O.A. Chadwick, J.T. Randerson, J.W. Harden

     
     

    "The Effects of Decomposition on the Oxidative Ratio and Carbon Oxidation State of Organic Matter." American Geophysical Union, San Francisco. (Dec 10-15) With M.E. Gallagher, N. Clark, J.T. Randerson, and G.P. Robertson

     
     

    "Climate drivers of soil carbon storage across the west coast of California." 2nd International Conference on Mechanisms of Organic Matter Stabilization and Destabilization in Soils, Asilomar, California. (October 9-13) With PJ Reimer, OA Chadwick, JW Harden, JS Southon, MS Torn

     
     Seminar Speaker
     

    "Biogeochemistry of charcoal in the environment: carbon cycle roles and carbon sequestration options." Arizona State University, Phoenix, AZ. (Oct 22, 2008)

     
     

    "Biogeochemistry of charcoal in the environment: carbon cycle roles and carbon sequestration options." TAMU, College Station, TX. (October 2008)

     
     

    "Resolving the Refractory-Labile Black Carbon Paradox: BC dynamics in soils." American Geophysical Union, San Francisco. (Dec 10-15) With Claudia Czimczik

     
    Editorial Positions
     Member of the Editorial Board, Biogeochemistry. Springer. (2011 - 2011)

     Member of the Editorial Board, Biogeochemistry. Springer. (2011 - 2016)

    Supervised Theses & Dissertations
     Somereet Nijjer, PhD Understanding belowground community regulation in an invaded forest. (2006) (Thesis Committee Member)

     Shagun Bhat, PhD Characterization, seasonality and source apportionment of fine particulate organic matter at urban and rural sites. (2007) (Thesis Committee Member)

     Brandi Boyd, M.S. Climate variability and glacial history from the LGM to the present in a southern Patagonia tidewater glacier system. (2007) (Thesis Committee Member)

     Karen Hammes, PhD Analysis and fate of combustion residues in soil. (2007) (Thesis Committee Member)

     Kerri Crawford, PhD Understanding the combined importance of species diversity and genetic diversity for ecological restoration of sand dune ecosystems. (2007) (Thesis Committee Member)

     Jianwen Zou, PhD Increased competitive ability and herbivory tolerance of the invasive plant Sapium sebiferum. (2007) (Thesis Committee Member)

     Kristi Lynn Tramp Milliken, PhD Holocene sea-level history and the evolution of Sabine Lake and Calcasieu Lake; east Texas and west Louisiana, USA and the glacial retreat history of Maxwell Bay, South Shetland Islands, Antarctica: Implications for ice cap thickness, retreat, and climate. (2008) (Thesis Committee Member)

     Mark Gabriel Little, PhD Broadening theories of soils genesis: Insights from Tanzania and simple models. (2008) (Thesis Committee Member)

     Bradley Ross Michalchuk, MS Glacial and climate history of the Firth of Tay, northeastern Antarctic peninsula . (2008) (Thesis Committee Member)

     Lori Ann Ziolkowski, PhD Radiocarbon of Black Carbon in Marine Dissolved Organic Matter. (2009) (Thesis Committee Member)

     Walter O'Hayer, MS Laurentide Ice Sheet Meltwater Influences and Millenial-Scale Climate Oscillations on the Northern Slope of the Gulf of Mexico During Marine Isotope Stage 6 and Termination II.. (2009) (Thesis Committee Member)

     Yuling Jia, PhD Characterization of Simple Saccharides and Other Organic Compounds in Atmospheric Particulate Matter and Source Apportionment Using Positive Matrix Factorization . (2010) (Thesis Committee Member)

     Morgan Elizabeth Gallagher, PhD The Coupling of the Carbon and Nitrogen Cycles in Agriculture: Crop Ecosystem Oxidative Ratio and the Effects of Fertilization on Biofuel Feedstock Quality. (2010) (Thesis Director)

     Fanwei Zeng, PhD The Effects of Land Use and Human Activities on Carbon Cycling in Texas Rivers. (2010) (Thesis Director)

     Davin Johannes Wallace, PhD Response of the Texas Coast to Global Change: Geologic vs Historic Timescales. (2010) (Thesis Committee Member)

     Kabindra Shakya, PhD Characterization of atmospheric aerosols in Kathmandu, New Hampshire, and Texas: Carbonaceous, isotopic, and water-soluble organic composition. (2011) (Thesis Committee Member)

     Rosa Dominguez-Faus, PhD The water footprint of biofuels. (2011) (Thesis Committee Member)

     Dong Li, PhD ssessing Biological Interactions and Potential Impacts of Emerging Carbonaceous Materials to Terrestrial Organisms. (2011) (Thesis Committee Member)

     Hao Sun, PhD Multiple controls on the chemical and physical structure of biochars. (2012) (Thesis Director)

     Wei Tang, PhD Application of Satellite Observations to Ozone Attainment Modeling in Texas . (2013) (Thesis Committee Member)

     Zuolin Liu, PhD Hydrologic properties of biochar. (2015) (Thesis Director)

     Katherine L Ziegelgruber, PhD Physical controls on charcoal movement in natural ecosystems. (2015) (Thesis Director)

    Awards, Prizes, & Fellowships
     Hammill Innovation Grant, Institute of Biosciences and Bioengineering, Rice University (2006)