Agroecology Lab

 

Publications


In Press
  • Gentile, R., B. Vanlauwe, P. Chivenge, and J. Six. Interactive effects from combining fertilizer and organic residue inputs enhance agroecosystem services. Soil Biol. Biochem.
  • Conant, R.T., J. M. Steinweg, M.L. Haddix, E.A.. Paul, A.F. Plante, and J. Six. Experimental warming shows that decomposition temperature sensitivity increases with soil organic matter recalcitrance. Ecology
  • De Gryze, S., M.V. Albarracin, R. Catala-Luque, R.E. Howitt, and J. Six. Greenhouse gas mitigation by alternative management practices in California agricultural soils: biophysical potential. Cal. Ag.
  • Stewart, C.E., K. Paustian, R.T. Conant, A.F. Plante, J. Six. Soil carbon saturation: evaluation and corroboration by long-term incubations. Soil Biol. Biochem.
  • Chung, H., J.H. Grove, and J. Six. Soil C saturation in a temperate agroecosystem. Soil Sci. Soc. Am. J.

2008
  • Linquist, B.A., E. Byous, G. Jones, J.K. Williams, J. Six, W. Horwath, C. van Kessel. Nitrogen and potassium fertility impacts on aggregate sheath spot disease and yields of rice. Plant Prod. Sci. 11:260-267.
  • Gulde, S., H. Chung, W. Amelung, C. Chang, and J. Six. 2008. Soil carbon saturation controls labile and stable carbon pool dynamics. Soil Sci. Soc. Am. J., 72:605-612.
  • Conant, R., R.A. Drijber, M.L. Haddix, W.J. Parton, E.A. Paul, A.F. Plante, J. Six, and J.M. Steinweg. 2008. Sensitivity of organic matter decomposition to warming varies with its quality. Global Change Biol., 14:868-877.
  • Lichter, K., B. Govaerts, J. Six, K.D. Sayre, J. Deckers, L. Dendooven. 2008. Aggregation and C and N contents of soil organic matter fractions in a permanent raised-bed planting system in the Highlands of Central Mexico. Plant and Soil, 305:237-252.
  • De Gryze, S., H. Bossuyt, J. Six, K. Van Oost, and R. Merckx. 2008. The relationship between landform and the distribution of soil C, N and P under conventional and minimum tillage. Geoderma, 144:180-188.
  • Van Oost, K., J. Six, G. Govers, T. Quine, and S. De Gryze. 2008. Soil Erosion: A carbon sink or source? Science, 319:1040-1041.
  • De Graaff, M.A., C. van Kessel, and J. Six. 2008. The impact of long-term elevated CO2 on C and N retention in stable SOM pools. Plant Soil, 303:311-321.
  • Olchin, G.P., S. Ogle, S.D. Frey, T.R. Filley, K. Paustian, and J. Six. 2008. Residue Carbon Incorporation into Soil Aggregates of No-Tillage and Tillage Dryland Cropping Systems. Soil Sci. Soc. Am. J., 72:507-513.
  • Stewart, C.E., K. Paustian, A.F. Plante, R.T. Conant, and J. Six. 2008. Soil carbon saturation: linking concept and measurable carbon pools. Soil Sci. Soc. Am. J., 72:379-392.

2007
  • Van Oost, K., T. A. Quine, G. Govers, S. De Gryze, J. Six, J.W. Harden, J.C. Ritchie, G.W. McCarty, G. Heckrath, K. Cosmas, J.V. Giraldez, J.R. Marques da Silva, R. Merck. 2007. The impact of agricultural soil erosion on the global carbon cycle. Science, 318:626-629.
  • Zotarelli, L., B.J.R. Alves, S. Urquiaga, R.M. Boddey, and J. Six. 2007. Impact of tillage and crop rotation on aggregate-associated soil organic matter in two Oxisols. Soil Till. Res., 95:196-206.
  • Stewart, C.E., K. Paustian, A.F. Plante, R.T. Conant, and J. Six. 2007. Whole-soil carbon saturation: Concept, Evidence and Evaluation. Biogeochem., 86:19-31.
  • De Gryze, S., H. Bossuyt, J. Six, M. Van Meirvenne, G. Govers, and R. Merckx. 2007. Controlling factors of aggregation at the landscape level in minimum and conventional tillage systems. Eur. J. Soil Sci., 58:1017-1026.
  • Kong, A.Y.Y., S.J. Fonte, C. van Kessel, and J. Six. 2007. Soil aggregates control N cycling efficiency in long-term conventional and alternative cropping systems. Nutr. Cycl. Agr. , 79:45-58.
  • Kool, D.M., H. Chung, K.R. Tate, D.J. Ross, P.C.D. Newton, and J. Six. 2007. Hierarchical saturation of soil carbon pools near a natural CO2 spring. Global Change Biol., 13:1282-1293.
  • Van groenigen, K.J., J. Six, D. Harris, and C. van Kessel. 2007. Elevated CO2 does not favor a fungal decomposition pathway. Soil Biol. Biochem., 39:2168-2172.
  • Chivenge, P.P., H. K. Murwira, K. E. Giller, P. Mapfumo and J. Six. 2007. Long-term impact of tillage and residue management on soil carbon stabilization: Implications for conservation agriculture on contrasting soils. Soil Till. Res., 94:328-337.
  • Denef, K., L. Zotarelli, R.M. Boddey, and J. Six. 2007. Microaggregate-associated C as a diagnostic fraction for management-induced changes in soil organic carbon in two Oxisols. Soil Biol. Biochem., 39:1165-1172.
  • Fonte, S.J., A.Y.Y. Kong, C. van Kessel, P. F. Hendrix, and J. Six. 2007. Influence of earthworm activity on aggregate-associated carbon and nitrogen dynamics differs with agroecosystem management. Soil Biol. Biochem., 39:1014-1022.
  • De Graaff, M.A., J. Six, and C. van Kessel. 2007. Elevated CO2 increases N rhizodeposition and microbial immobilization of root-derived N. New Phytologist, 173:778-786.
  • West, T.O., and J. Six. 2007. Considering the influence of sequestration duration and carbon saturation on estimates of soil carbon capacity. Climatic Change, 80:25-41.
  • Brussaard, L., M.M. Pulleman, A. Mando, E. Ouedraogo, and J. Six. 2007. Soil fauna and soil function in the fabric of the food web. Pedobiologia, 50:447-462.

2006
  • Denef, K., and J. Six. 2006. Contributions of incorporated residue and living roots to aggregate-associated and microbial carbon in two soils with different clay mineralogy. Eur. J. Soil Sci., 57, 774-786.
  • De Graaff, M.A., K.J. van Groenigen, J. Six, B.A. Hungate, and C. van Kessel. Interactions between plant growth and soil nutrient cycling under elevated CO2: a meta-analysis. Global Change Biol., 12:2077-2091.
  • C. van Kessel, B. Boots, M.A. De Graaff, D. Harris, H. Blum, and J. Six.  Total soil C and N sequestration in a grassland following 10 years of free air CO2 enrichment. Global Change Biol., 12:2187-2199.
  • De Gryze, R., J. Six, and R. Merckx. 2006. Quantifying water-stable soil aggregate turnover and its implication to soil organic matter dynamics in a model study. Eur. J. Soil Sci., 57:693-707.
  • De Gryze, S., L. Jassogne, J. Six, H. Bossuyt, S. Herman, M. Wevers, and R. Merckx. 2006. Pore structure changes during decomposition of fresh residue: X-ray tomography analyses. Geoderma, 134:82-96.
  • Mummey, D.L., Rillig, C.R., and J. Six. 2006. Endogeic earthworm differentially influence bacterial communities associated with different soil aggregate size fractions. Soil Biol. Biochem., 38:1608-1614.
  • Cavagnaro, T.R., L.E. Jackson, J. Six, H. Ferris, S. Goyal, D. Asami, and K.M. Scow. 2006. Arbuscular mycorrhizas, microbial communities, nutrient availability, and soil aggregates in organic tomato production. Plant Soil, 282:209-225.
  • Plante, A.F., R.T. Conant, E.A. Paul, K. Paustian, and J. Six. 2006. Acid hydrolysis of easily dispersed and microaggregate-derived silt- and clay-sized fractions to isolate resistant soil organic matter. Eur. J.  Soil. Sci., 57:456-467.
  • Mummey, D.L., W.E. Holben, J. Six, and P.D. Stahl. 2006. Spatial stratification of soil microbial populations in diverse soils: Rubrobacteria and Gemmatimonads are abundant in water-stable microaggregate interiors while Acidobacteria are primarily associated with macroaggregates. Micr. Ecol., 51:404-411.
  • Van Groenigen, K.J., J. Six, B.A. Hungate, M.A. de Graaff, N. van Breemen, and C. van Kessel. 2006. Element interactions limit soil C storage. Proc. Nat. Acad. Sci., 103:6571-6574.
  • Lee, J., J. Six, A.P. King, C. van Kessel, and D.E. Rolston. 2006. Tillage and field-scale controls on greenhouse gas emissions. J. Environ. Qual., 35: 714-725.
  • De Gryze, S., L. Jassogne, H. Bossuyt, J. Six, and R. Merckx. 2006. Water repellence and soil aggregate dynamics in a loamy grassland soil as affected by texture. Eur. J. Soil Sci., 57:235-246.
  • Thiet, R.K., S.D. Frey, and J. Six. 2006. Do growth yield efficiencies differ between soil microbial communities differing in fungal:bacterial ratios? Reality check and methodological issues. Soil Biol. Biochem. , 38:837-844.
  • Phillips, D.A., T.C. Fox, and J. Six. 2006. Root exudation (net efflux of amino acids) may increase rhizodeposition under elevated CO2. Global Change Biol., 12:561-567.
  • Six, J., S.D. Frey, R.K. Thiet, and K.M. Batten. 2006. Bacterial and fungal contributions to C-sequestration in agroecosystems. Soil Sci. Soc. Am. J. 70:555-569.
  • Plante, A.F., C.E. Stewart, R.T. Conant, K. Paustian, and J. Six. 2006. Soil management effects on organic carbon storage in fractions physically isolated from a Gray Luvisol soil. Can. J. Soil Sci. 86:141-151.
  • Poch, R.M., J.W. Hopmans, J. Six, D.E. Rolston, and J.L. McIntyre. 2006. Considerations of a field scale soil carbon budget for furrow irrigation. Agric. Ecosys. Environ. 113:391-398.
  • Plante, A.F., R.T. Conant, C.E. Stewart, K. Paustian, and J. Six. 2006. Impact of soil texture on the distribution of soil organic matter in physical and chemical fractions. Soil Sci. Soc. Am. J., 70:287-296.
  • Bossuyt, H., J. Six, and P.F. Hendrix. 2006. Interactive effects of functionally different earthworm species on aggregation and incorporation and decomposition of newly added residue carbon. Geoderma, 130:14-25.
  • De Graaff, M.A., J. Six, H. Blum, and C. van Kessel. 2006. Prolonged elevated atmospheric CO2 does not affect decomposition of plant material. Soil Biol. Biochem., 38:187-190.

2005
  • Batten, K.M., J. Six, K.M. Scow, and M.C. Rillig. 2005. Minimal effects of plant invasion on selected physical and biological properties of serpentine grassland soils. Soil Biol. Biochem., 37:2277-2282.
  • Ladha, J.K., H. Pathak, T.J. Krupnik, J. Six, and C. van Kessel. 2005. Efficiency of fertilizer nitrogen in cereal production: Retrospects and prospects. Adv. Agr., 87:85-156.
  • Moran, K.K., J. Six, W.R. Horwath, and C. van Kessel. 2005. Role of mineral-nitrogen in residue decomposition and stable soil organic matter formation. Soil Sci. Soc. Am. J., 69:1730-1736.
  • Denef, K., and J. Six. 2005. Clay mineralogy determines the importance of biological versus abiotic processes for macroaggregate formation and stabilization. Eur. J. Soil Sci., 56: 469-479.
  • Pulleman, M.M., J. Six, N. van Breemen and A.G. Jongmans. 2005. Soil organic matter distribution and microaggregate characteristics as affected by agricultural management and earthworm activity. Eur. J. Soil Sci., 56:453-467.
  • Kong, A.Y., J. Six, D.C. Bryant, R. F. Denison, and C. van Kessel. 2005. The relationship between carbon input, aggregation, and soil organic carbon stabilization in sustainable cropping systems. Soil Sci. Soc. Am. J., 69:1078-1085.
  • Bruun, S., J. Six, L.S. Jensen, and K. Paustian. 2005. Estimating turnover of soil organic carbon fractions based on radiocarbon measurements. Radiocarbon, 47:99-113.
  • Pulleman, M.M, J. Six, A. Uyl, J.C.Y. Marinissen, A.G. Jongmans. 2005. Earthworms and management affect organic matter incorporation and microaggregate formation in agricultural soils. Appl. Soil Ecol., 29:1-15.
  • Zotarelli, L., B.J.R. Alves, S. Urquiaga, E. Torres, H.P. dos Santos, K. Paustian, R.M. Boddey, and J. Six. 2005. Impact of tillage and crop rotation on aggregate-associated C in two Oxisols. Soil Sci. Soc. Am. J., 69:482-491.
  • Van Groenigen, C.J., A. Gorissen, J. Six, D. Harris, P. Kuikman, J.W. van Groenigen, and C. van Kessel. 2005. Decomposition of 14C-labeled roots in a pasture soil exposed to 10 years of elevated CO2. Soil Biol. Biochem., 37:497-506.
  • Bossuyt, H., J. Six, and P.F. Hendrix. 2005. Protection of soil carbon by microaggregates in earthworm casts. Soil Biol. Biochem., 37:251-258.
  • De Gryze, S., J. Six, C. Brits and R. Merckx. 2005. A quantification of short-term macroaggregate dynamics: Influences of wheat residue input and texture. Soil Biol. Biochem., 37: 55-66.

2004
  • De Graaff, M.A., J. Six, D. Harris, H. Blum, and C. van Kessel. 2004. Decomposition of soil and plant carbon from pasture systems after nine years of exposure to elevated CO2: Impact on C cycling and modeling. Global Change Biol., 10:1922-1935.
  • Denef, K., J. Six, R. Merckx, and K. Paustian. 2004. Carbon sequestration in microaggregates of no-tillage soils with different clay mineralogy. Soil Sci. Soc. Am. J., 68:1935-1944.
  • Conant, R.T., J. Six, and K. Paustian. 2004. Land use effects on soil carbon fractions in Southeastern United States: II. Changes in soil carbon fractions along a forest to pasture chronosequence. Biol. Fert. Soils, 40:194-200.
  • Six, J., H. Bossuyt, S. De Gryze, and K. Denef. 2004. A history of research on the link between (micro)aggregates, soil biota, and soil organic matter dynamics. Soil Till. Res., 79:7-31.
  • Bruun, S., J. Six, L.S. Jensen. 2004. Estimating vital statistics and age distributions of measurable soil organic carbon fractions based on their pathway of formation and radiocarbon content. J. Theor. Biol., 230:241-250.
  • Simpson, R.T., S.D. Frey, J. Six, and R.K. Thiet. 2004. Preferential accumulation of microbial carbon in aggregate structures of no-tillage soils. Soil. Sci. Soc. Am. J., 68:1249-1255.
  • De Gryze, S., J. Six, K. Paustian, S.J. Morris, E.A. Paul, and R. Merckx. 2004. Soil organic pool changes following land use conversions. Global Change Biol., 10:1120-1132.
  • Bossuyt, H., J. Six, and P.F. Hendrix. 2004. Rapid incorporation of carbon from fresh residues into newly formed stable microaggregates within earthworm casts. Eur. J. Soil Sci., 55:393-399.
  • Six, J., S.M. Ogle, F.J. Breidt, R.T. Conant, A.R. Mosier, and K. Paustian. 2004. The potential to mitigate global warming with no-tillage is only realized when practiced in the long-term. Global Change Biol. 10:155-160.

2003
  • Van Groenigen, K.J., J. Six, D. Harris, H. Blum, and C. van Kessel. 2003. Soil 13C-15N dynamics in a N2-fixing clover system under long-term exposure to elevated atmospheric CO2. Global Change Biol., 9:1751-1762.
  • Conant, R.T., J. Six, and K. Paustian. 2003. Land use effects on soil carbon fractions in Southeastern United States: I. Management intensive grazing versus extensive grazing. Biol. Fert. Soils, 38: 386-392.
  • Paul, E.A., S.J. Morris, J. Six, K. Paustian and E.G. Gregorich. 2003. Determination of the ecosystem controls on C and N dynamics in afforested agricultural soils. Soil Sci. Soc. Am. J., 67:1620-1628.
  • Del Galdo, I., J. Six, A. Peressotti, and M.F. Cotrufo. 2003. Assessing the impact of land-use on C sequestration by means of soil organic matter fractionation and stable C isotopes. Global Change Biol., 9:1204-1213.
  • Frey, S.D., J. Six and E.T. Elliott. 2003. Reciprocal transfer of carbon and nitrogen by decomposer fungi at the soil-litter interface. Soil Biol. Biochem., 35:1001-1004.
  • Salas, A.M., E.T. Elliott, D.G. Westfall, C.V. Cole, and J. Six. 2003. The role of particulate organic matter in phosphorus cycling. Soil Sci. Soc. Am. J., 67:181-189.

2002
  • Six, J., C. Feller, K. Denef, S.M. Ogle, J.C. de Moraes Sa and A. Albrecht. 2002. Organic matter, biota and aggregation in temperate and tropical soils – Effects of no-tillage. Agron. Agricul. Envir., 22:755-775.
  • Six, J., P. Callewaert, S. Lenders, S. Degryze, S.J. Morris, E.G. Gregorich, E.A. Paul and K. Paustian. 2002. Measuring and understanding carbon storage in afforested soils by physical fractionation. Soil Sci. Soc. Am. J., 66:1981-1987.
  • Bossuyt, H., J. Six, and P.F. Hendrix. 2002. Aggregate protected carbon in no-tillage and conventional tillage agroecosystems using 14C labeled plant residue. Soil Sci. Soc. Am. J., 66:1965-1973.
  • Denef, K., J. Six, R. Merckx, and K. Paustian. 2002. Short-term effects of biological and physical forces on aggregate formation in soils with different clay mineralogy. Plant Soil, 246:185-200
  • Six, J., R.T. Conant, E.A. Paul, and K. Paustian. 2002. Stabilization mechanisms of soil organic matter: Implications for C-saturation of soils. Plant Soil, 241:155-176.

2001
  • Six, J., G. Guggenberger, K. Paustian, L. Haumaier, E.T. Elliott, and W. Zech. 2001. Sources and composition of physically defined soil organic matter fractions. Eur. J. Soil Sci., 52:607-618.
  • Denef, K., J. Six, R. Merckx, and K. Paustian. 2001. Importance of macroaggregate turnover in controlling carbon sequestration in soils: effect of physical disturbance induced by dry-wet cycles. Soil Biol. Biochem., 33:2145-2153.
  • Denef, K., J. Six, H. Bossuyt, S.D. Frey, E.T. Elliott, R. Merckx, and K. Paustian. 2001. Influence of wet-dry cycles on the interrelationship between aggregate, particulate organic matter, and microbial community dynamics. Soil Biol. Biochem., 33:1599-1611.
  • Six, J., A. Carpentier, C. van Kessel, R. Merckx, D. Harris, W.R. Horwath and A. Lüsher. 2001. Impact of elevated CO2 on soil organic matter and aggregate dynamics as related to changes in aggregate turnover and residue quality. Plant Soil, 234:27-36.
  • Bossuyt, H., K. Denef. J. Six, S.D. Frey, R. Merckx, and K. Paustian. 2001. Influence of microbial populations and residue quality on aggregate stability. Appl. Soil Ecol., 16:195-208.

2000
  • Six, J., E.T. Elliott, and K. Paustian. 2000. Soil macroaggregate turnover and microaggregate formation: A mechanism for C sequestration under no-tillage agriculture. Soil Biol. Biochem., 32:2099-2103
  • Six, J., E.T. Elliott, and K. Paustian. 2000. Soil structure and soil organic matter: II. A normalized stability index and the effect of mineralogy. Soil Sci. Soc. Am. J., 64:1042-1049.
  • Six, J., K. Paustian, E.T. Elliott, and C. Combrink. 2000. Soil structure and soil organic matter: I. Distribution of aggregate size classes and aggregate associated carbon. Soil Sci. Soc. Am. J., 64:681-689.
  • Six, J., R. Merckx, K. Kimpe, E.T. Elliott, and K. Paustian. 2000. A reevaluation of the enriched labile soil organic matter fraction. Eur. J. Soil Sci., 51:283-293.
  • Paustian, K., J. Six, E.T. Elliott, and H.W. Hunt. 2000. Management options for reducing CO2 emissions from agricultural soils. Biogeochem., 48:147-163.

1999
  • Six, J. E.T. Elliott, and K. Paustian. 1999. Aggregate and soil organic matter dynamics under conventional and no-tillage systems. Soil Sci. Soc. Am. J., 63:1350-1358.
  • Guggenberger, G., S.D. Frey, J. Six, E.T. Elliott, and K. Paustian. 1999. Bacterial and fungal cell-wall residues in conventional and no-tillage agroecosystems. Soil Sci. Soc. Am. J., 63:1188-1198.
  • Six, J., P.A. Schultz, J.D. Jastrow, and R. Merckx. 1999. Recycling of sodium polytungstate used in soil organic matter studies. Soil Biol. Biochem., 31:1193-1196.
  • Guggenberger, G., E.T. Elliott, S.D. Frey, J. Six, and K. Paustian. 1999. Microbial contributions to the aggregation of cultivated grassland soil amended with starch. Soil Biol. Biochem., 31:407-419.

1998
  • Six, J., E.T. Elliott, K. Paustian, and J.W. Doran. 1998. Aggregation and soil organic matter storage in cultivated and native grassland soils. Soil Sci. Soc. Am. J., 62:1367-1377.

Invited and Refereed Chapters
  • Denef, K., A.F. Plante, and J. Six. Characterization of soil organic matter: Integrated Methodology on Soil Carbon Flux Measurements. Eds W. Kutsch, M. Bahn, and A. Heinemeyer. Cambridge University Press. In press.
  • Van Groenigen, K.J., M.A. de Graaff, J. Six, D. Harris, P. Kuikman, C. van Kessel. 2006. The Impact of Elevated Atmospheric [CO2] on Soil C and N Dynamics: A Meta-Analysis. In: Ecological Studies, vol. 187, pp. 373-392 "Managed Ecosystems and CO2 Case Studies, Processes, and Perspectives" eds.: J. Nösberger, S.P. Long, R.J. Norby, M. Stitt, G.R. Hendrey, H. Blum. © Springer-Verlag Berlin Heidelberg
  • Krupnik, T.J., J. Six, J.K. Ladha, M.J. Paine and C. van Kessel. 2004. An assessment of fertilizer nitrogen recovery efficiency by grain crops. In A.R. Mosier, J.K. Syers, and J.R. Freney (eds). Agriculture and the Nitrogen Cycle: Assessing the Impacts of Fertilizer Use on Food Production and the Environment. SCOPE 65. Island Press, Washington. pp. 193-207.
  • Six, J. and J.D. Jastrow. 2002. Soil Organic Matter Turnover. In R. Lal (Ed.). Encyclopedia of Soil Science, Marcel Dekker, NY. pp. 936-942.