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College of Agricultural Sciences Personnel Profile
Personnel Photo of Michelle  Haddix
Michelle Haddix
Research Associate
Natural Resource Ecology Laboratory
College of Agricultural Sciences

Nesb Building, Room
Phone:
970-491-6162
Education:
    Personal Website:
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    Chattopadhyay, Suhana, McConnaughay, Kelly D, Haddix, Michelle, Conant, Rich T, Morris, Sherri J, Paul, Eldor A, Blackwood, Christopher B, Tag encoded pyrosequencing reveals shift in microbial community structure in Midwest soil under different agricultural and restoration treatments affecting carbon sequestration

    Haddix, Michelle, Gregorich, E., Helgason, B., Janzen, H., Ellert, B., Cotrufo, Francesca Francesca, (2020) Climate, carbon content, and soil texture control the independent formation and persistence of particulate and mineral-associated organic matter in soil. Geoderma 363 114160

    Cotrufo, Francesca Francesca, Ranalli, Maria Giovanna, Haddix, Michelle, Six, Johan, Lugato, Emanuele, (2019) Soil carbon storage informed by particulate and mineral-associated organic matter Nature geosciences

    Jiang, Xinyu, Tan, Xiangping, Cheng, Jiong, Haddix, Michelle, Cotrufo, Francesca Francesca, (2019) Interactions between aged biochar, fresh low molecular weight carbon and soil organic carbon after 3.5 years soil-biochar incubations GEODERMA 333 99-107

    Andres, Pilar, Moore, John C, Cotrufo, Francesca, Denef, Karolien, Haddix, Michelle, Molowny-Horas, Roberto, Riba, Miguel, Wall, Diana H, (2017) Grazing and edaphic properties mediate soil biotic response to altered precipitation patterns in a semiarid prairie SOIL BIOLOGY & BIOCHEMISTRY 113 263-274

    Haddix, Michelle, Paul, Eldor A, Cotrufo, Francesca Francesca, (2016) Dual, differential isotope labeling shows the preferential movement of labile plant constituents into mineral-bonded soil organic matter Global change biology

    Jiang, Xinyu, Haddix, Michelle, Cotrufo, Francesca Francesca, (2016) Interactions between biochar and soil organic carbon decomposition: Effects of nitrogen and low molecular weight carbon compound addition Soil Biology and Biochemistry 100 92–101

    Pisani, Oliva, Haddix, Michelle, Conant, Rich T, Paul, Eldor A, Simpson, Myrna J, (2016) Molecular composition of soil organic matter with land-use change along a bi-continental mean annual temperature gradient Science of The Total Environment 573 470–480

    Pisani, Oliva, Haddix, Michelle, Conant, Rich T, Paul, Eldor A, Simpson, Myrna J., (2016) Molecular composition of soil organic matter with land-use change along a bi-continental mean annual temperature gradient SCIENCE OF THE TOTAL ENVIRONMENT 573 470-480

    Haddix, Michelle, Magrini-Bair, Kim, Evans, Robert J., Conant, Rich T, Wallenstein, Matthew, Morris, Sherri J., Calderon, Francisco, Paul, Eldor A, (2016) Progressing towards more quantitative analytical pyrolysis of soil organic matter using molecular beam mass spectroscopy of whole soils and added standards GEODERMA 283 88-100

    Haddix, Michelle, Magrini-Bair, Kim, Evans, Robert J, Conant, Rich T, Wallenstein, Matthew, Morris, Sherri J, Calderón, Francisco, Paul, Eldor A, (2016) Progressing towards more quantitative analytical pyrolysis of soil organic matter using molecular beam mass spectroscopy of whole soils and added standards Geoderma 283 88–100

    Cotrufo, Francesca Francesca, Boot, Claudia, Abiven, Samuel, Foster, Erika Jean, Haddix, Michelle, Reisser, Moritz, Wurster, Christopher M, Bird, Michael I, Schmidt, Michael WI, (2016) Quantification of pyrogenic carbon in the environment: An integration of analytical approaches Organic Geochemistry 100 42–50

    Cotrufo, Francesca Francesca, Boot, Claudia, Kampf, Stephanie K, Nelson, Peter August, Brogan, Daniel Joseph, Covino, Tim, Haddix, Michelle, MacDonald, Lee H, Rathburn, Sarah, Ryan-Bukett, Sandra, others, , (2016) Redistribution of pyrogenic carbon from hillslopes to stream corridors following a large montane wildfire Global Biogeochemical Cycles 30 9 1348–1355

    Andres, Pilar, Moore, John C, Simpson, Rodney Thomas, Selby, Greg N, Cotrufo, Francesca Francesca, Denef, Karolien, Haddix, Michelle, Shaw, Elisabeth, Milano de Tomasel, Cecilia Cecilia, Molowny, R, Wall, Diana, (2016) Soil food web stability in response to grazing in a semi-arid prairie: the importance of soil heterogeneity Soil Biology and Biochemistry 97 131-143

    Andres, Pilar, Moore, John C, Simpson, Rodney Thomas, Selby, Greg N, Cotrufo, Francesca, Denef, Karolien, Haddix, Michelle, Shaw, Elizabeth Ashley, de Tomasel, Cecilia Milano, , Molowny-Horas, Roberto, Wall, Diana H, (2016) Soil food web stability in response to grazing in a semi-arid prairie: The importance of soil textural heterogeneity SOIL BIOLOGY & BIOCHEMISTRY 97 131-143

    Boot, CM, Haddix, Michelle, Paustian, Keith H, Cotrufo, MF, (2015) Distribution of black carbon in ponderosa pine forest floor and soils following the High Park wildfire Biogeosciences 12 10 3029–3039

    Cotrufo, Francesca Francesca, Soong, Jennifer L, Horton, Andrew J, Campbell, Eleanor Elizabeth, Haddix, Michelle, Wall, Diana H, Parton, William J, (2015) Formation of soil organic matter via biochemical and physical pathways of litter mass loss Nature Geoscience

    Cotrufo, Francesca Francesca, Soong, Jennifer L., Horton, Andrew J., Campbell, Eleanor Elizabeth, Haddix, Michelle, Wall, Diana H, Parton, Andwilliam J., (2015) Formation of soil organic matter via biochemical and physical pathways of litter mass loss NATURE GEOSCIENCE 8 10 776-+

    Calderon, Francisco, Haddix, Michelle, Birge, Hannah, Conant, Rich T, Morris, Sherri, (2015) "Mid-infrared soil spectral changes due to cultivation, C mineralization, and short-term substrate utilization" SSSAmProc

    Birge, Hannah E, Conant, Rich T, Follett, Ronald F, Haddix, Michelle, Morris, Sherri J, Snapp, Sieglinde S, Wallenstein, Matthew, Paul, Eldor A, (2015) Soil respiration is not limited by reductions in microbial biomass during long-term soil incubations Soil Biology and Biochemistry 81 304–310

    Birge, Hannah E., Conant, Rich T, Follett, Ronald F., Haddix, Michelle, Morris, Sherri J., Snapp, Sieglinde S., Wallenstein, Matthew, Paul, Eldor A, (2015) Soil respiration is not limited by reductions in microbial biomass during long-term soil incubations SOIL BIOLOGY & BIOCHEMISTRY 81 304-310

    Pisani, Oliva, Hills, Katherine M, Courtier-Murias, Denis, Haddix, Michelle, Paul, Eldor A, Conant, Rich T, Simpson, André J, Arhonditsis, George B, Simpson, Myrna J, (2014) Accumulation of aliphatic compounds in soil with increasing mean annual temperature Organic Geochemistry 76 118–127

    Soong, Jennifer L, Reuss, Dan, Pinney, Colin M, Boyack, Ty W, Haddix, Michelle, Stewart, Catherine E, Cotrufo, Francesca Francesca, (2014) Design and operation of a continuous 13C and 15N labeling chamber for uniform or differential, metabolic and structural, plant isotope labeling Journal of visualized experiments: JoVE 83

    Boot, Claudia, Haddix, Michelle, Paustian, Keith H, Cotrufo, Francesca Francesca, (2013) "ACCOUNTING FOR PYROGENIC CARBON STOCKS IN THE CACHE LA POUDRE WATERSHED FOLLOWING THE HIGH PARK FIRE"

    Li, Dejun, Schädel, Christina, Haddix, Michelle, Paul, Eldor A, Conant, Rich T, Li, Jianwei, Zhou, Jizhong, Luo, Yiqi, (2013) Differential responses of soil organic carbon fractions to warming: results from an analysis with data assimilation Soil Biology and Biochemistry 67 24–30

    Calderón, Francisco, Haddix, Michelle, Conant, Rich T, Magrini-Bair, Kimberly, Paul, Eldor A, (2013) Diffuse-reflectance Fourier-transform mid-infrared spectroscopy as a method of characterizing changes in soil organic matter Soil Science Society of America Journal 77 5 1591–1600

    Wallenstein, Matthew, Haddix, Michelle, Ayres, Edward, Steltzer, Heidi, Magrini-Bair, Kimberly A, Paul, Eldor A, (2012) Litter chemistry changes more rapidly when decomposed at home but converges during decomposition–transformation Soil Biology and Biochemistry

    Wallenstein, Matthew, Haddix, Michelle, Lee, Daniel D, Conant, Rich T, Paul, Eldor A, (2011) A litter-slurry technique elucidates the key role of enzyme production and microbial dynamics in temperature sensitivity of organic matter decomposition Soil Biology and Biochemistry

    Plante, Alain F, Fernández, José M, Haddix, Michelle, Steinweg, J Megan, Conant, Rich T, (2011) Biological, chemical and thermal indices of soil organic matter stability in four grassland soils Soil Biology and Biochemistry 43 5 1051–1058

    Haddix, Michelle, Plante, Alain F, Conant, Rich T, Six, Johan, Steinweg, J Megan, Magrini-Bair, Kim, Drijber, Rhae A, Morris, Sherri J, Paul, Eldor A, (2011) The role of soil characteristics on temperature sensitivity of soil organic matter Soil Science Society of America Journal 75 1 56–68

    Plante, Alain F, Conant, Rich T, Carlson, Jenny, Greenwood, Rebecca, Shulman, Jeremy M, Haddix, Michelle, Paul, Eldor A, (2010) Decomposition temperature sensitivity of isolated soil organic matter fractions Soil Biology and Biochemistry 42 11 1991–1996

    Conant, Rich T, Haddix, Michelle, Paustian, Keith H, (2010) Partitioning soil carbon responses to warming: Model-derived guidance for data interpretation Soil Biology and Biochemistry 42 11 2034–2036

    Lisboa, Carolina C, Conant, Rich T, Haddix, Michelle, Cerri, Carlos Eduardo P, Cerri, Carlos C, (2009) Soil carbon turnover measurement by physical fractionation at a forest-to-pasture chronosequence in the Brazilian Amazon Ecosystems 12 7 1212–1221

    Conant, Rich T, Steinweg, J Megan, Haddix, Michelle, Paul, Eldor A, Plante, Alain F, Six, Johan, (2008) Experimental warming shows that decomposition temperature sensitivity increases with soil organic matter recalcitrance Ecology 89 9 2384–2391

    Conant, Rich T, Drijber, Rhae A, Haddix, Michelle, Parton, William J, Paul, Eldor A, Plante, Alain F, Six, Johan, Steinweg, J Megan, (2008) Sensitivity of organic matter decomposition to warming varies with its quality Global Change Biology 14 4 868–877

    Conant, Rich T, Drijber, Rhad, Haddix, Michelle, Parton, William J, Paul, Eldor A, Plante, Alain F, Six, Johan, Steinweg, J Megan, (2007) COS 144-8: Three lines of evidence indicating that the sensitivity of organic matter decomposition to warming varies indirectly with its quality

    Haddix, Michelle, Margrini-Bair, Kimberly, Conant, Rich T, Calderón, Francisco, Paul, Eldor A, (2007) Diffuse-reflectance Fourier-transform mid-infrared spectroscopy as a method of characterizing changes in soil organic matter Colorado State University. Libraries

    Haddix, Michelle, Lisboa, Carolina, Conant, Rich T, Paul, Eldor A, Steinweg, Jessica Megan, (2007) PS 43-56: Temperature sensitivity of soil organic matter fractions

    Drijber, Rhae, Conant, Rich T, Plante, Alain, Paul, Eldor A, Steinweg, Megan, Haddix, Michelle, (2007) Temperature-Driven Shifts in Soil Microbial Community Composition Are Not Soil Dependent.

    Paul, Eldor A, Morris, Sherri J, Drijber, Rhae A, Margrini-Bair, Kim, Steinweg, J Megan, Six, Johan, Conant, Rich T, Plante, Alain F, Haddix, Michelle, (2007) The role of soil characteristics on temperature sensitivity of soil organic matter Colorado State University. Libraries

    Drijber, Rhae, Carter, David, Conant, Rich T, Plante, Alain, Paul, Eldor A, Steinweg, Megan, Haddix, Michelle, (2006) "Do Temperature-Driven Shifts in Microbial Community Composition Facilitate Decay of Recalcitrant Organic Matter?."

    Haddix, Michelle, Steinweg, Megan, Conant, Rich T, Plante, Alain, Paul, Eldor A, Six, Johan, (2006) "Effect of Temperature on the Dynamics of Different Soil Organic Matter Fractions."

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