Zerkle, A.J., House, C.H., Cox, R.P. & Canfield, D.E. (2006). Metal limitation of cyanobacterial N2 fixation and implications for the Precambrian nitrogen cycle. Geobiology, 4:285-297.
Johnston, D.T., Wing, B.A., Farquhar, J., Kaufman, A.J., Strauss, H., Lyons, T.W., Kah, L.C. & Canfield, D.E. (2006). Sulfur isotope evidence of active microbial disproportionation in the middle Proterozoic: Insights into Earth surface change [Abstract]. Eos, Transactions of the American Geophysical Union, 87 (36), Joint Assembly Supplement.
Johnston, D.T., Poulton, S.W., Fralick, P.W., Wing, B.A., Canfield, D.E. & Farquhar, J. (2006). Insight into the variability within the Proterozoic sulphur cycle [Abstract]. Geochimica et Cosmochimica Acta, 70 (18), Supplement:A296.
Johnston, D.T., Poulton, S.W., Fralick, P.W., Wing, B.A., Canfield, D.E. & Farquhar, J. (2006). Evolution of the oceanic sulfur cycle at the end of the Paleoproterozoic. Geochimica et Cosmochimica Acta, 70:5723-5739.
Johnston, D.T., Farquhar, J. & Canfield, D.E. (2007). Sulfur isotope insights into microbial sulfate reduction: When microbes meet models. Geochimica et Cosmochimica Acta(71):3929-3947.
Johnston, D.T., Farquhar, J. & Canfield, D.E. (2006). The S-isotope fractionation limit for sulfate reducing microorganisms: Insights into biological mass-dependent fractionations [Abstract]. Eos, Transactions of the American Geophysical Union, 87 (52), Fall Meeting Supplement.
Johnston, D.T., Farquhar, J., Bao, H. & Canfield, D.E. (2006). Addressing the fractionation potential of the sulfate reduction pathway: Insights into sulfur and oxygen isotopic fractionation in sulfate and sulfide [Abstract]. Eos, Transactions of the American Geophysical Union, 87 (36), Joint Assembly Supplement.
Farquhar, J., Masterson, A., Johnston, D.T., Bao, H. & Canfield, D.E. (2006). Evidence for reoxidation of metabolic intermediate sulfite during sulfate reduction by natural microbial populations [Abstract]. Eos, Transactions of the American Geophysical Union, 87 (52), Fall Meeting Supplement.
Farquhar, J., Canfield, D.E., Masterson, A., Bao, H. & Johnston, D.T. (Submitted, 2007). Sulfur and oxygen isotope study of sulfate reduction in epxeriments with natural populations from Faellestrand, Denmark. Geochimica et Cosmochimica Acta.
Zerkle, A.L., House, C.H., Junium, C.K. & Canfield, D..E. (Submitted, 2006). Enhanced Fe availability contributes to negative δ 15N excursions in the geologic record. Geology.
Sorensen, K.B., Canfield, D.E., Teske, A.P. & Oren, A. (2005). Community composition of a hypersaline endoevaporitic microbial mat.
Appl Environ Microbiol, 71(11):7352-65 [
Online].
Johnston, D.T., Wing, B.A., Farquhar, J., Kaufman, A.J., Strauss, H., Lyons, T.W., Kah, L.C. & Canfield, D.E. (2005). Active microbial sulfur disproportion in the mesoproterozoic. Science, 310:1477-1479.
Johnston, D.T., Poulton, S.W., Canfield, D.E., Wing, B.A. & Farquhar, J. (2006). Evolution of the oceaninc sulfur cycle in the late Paleoproterozoic [Abstract]. Astrobiology, 6:109.
Johnston, D.T., Farquhar, J., Wing, B.A., Kaufman, A.J., Canfield, D.E. & Habicht, K.S. (2005). Multiple sulfur isotope fractionations in biological systems: A case study with sulfate reducers and sulfur disproportionators. American Journal of Science, 305:645-660.
Zerkle, A.L., Cox, R.P., Junium, C.J., House, C.H. & Canfield, D.E. (In Preparation, 2005). Metal limitation of nitrogen fixing cyanobacteria through geologic time and resulting biosignatures. Science.
Johnston, D.T., Farquhar, J., Wing, B.A., Lyons, T., Kah, L., Strauss, H. & Canfield, D.E. (2005). Using the multiple isotopes of sulfur to constrain microbial processes in the Proterozoic ocean [Abstract]. Geochimica et Cosmochimica Acta, 69 (10S, Special Supplement):A548.
Johnston, D.T., Farquhar, J., Wing, B.A., Kaufman, A.J., Canfield, D.E. & Habicht, K.S. (In Press, 2005). Multiple sulfur isotope fractionations in biological systems: A case study with sulfate reducers and sulfur disproportionators. American Journal of Science.
Farquhar, J., Wing, B.A., Johnston, D.T., Ono, S., Canfield, D.E. & Habicht, K. (2005). Multiple isotope effects associated with biogeochemical networks [Abstract]. Geochimica et Cosmochimica Acta, 69 (10S, Special Supplement):A215.
Email dec@biology.sdu.dk Institution Odense University Address
