NAI
David Johnston
Harvard University
Current Projects
- Environmental Evolution and Complex Life — 2016 NAI
- Early Animals: Evolution of Complex Multicellularity — 2015 NAI
- Paleontological, Sedimentological, and Geochemical Investigations of the Mesoproterozoic-Neoproterozoic Transition — 2015 NAI
- Earth's Evolving Nitrogen Cycle - Implications for Community Complexity and Stability — 2015 NAI
- Early Animals: Modeling the Biotic-Abiotic Interface in the Early Evolution of Multicellular Form — 2015 NAI
- Paleontological, Sedimentological, and Geochemical Investigations of the Mesoproterozoic-Neoproterozoic Transition — 2014 NAI
- Project 4B: New SIMS Procedures for in Situ Analysis of Mass-Independent Fractionation of S Isotopes — 2014 NAI
- Early Animals: Modeling the Biotic-Abiotic Interface in the Early Evolution of Multicellular Form — 2014 NAI
- Early Animals: What Made “fronds” Grow in Neoproterozoic Deep Seas? — 2013 NAI
- Life and Environments: Proterozoic Geology, Geochemistry and Paleontology — 2013 NAI
- Life and Environments: Fossils of the Late Meso- and Early Neoproterozoic — 2013 NAI
- Life and Environments: Geochemistry of Late Precambrian Oxygenation — 2013 NAI
- Biomechanics of Rangeomorph Fauna — 2012 NAI
- Atmospheric Oxygen and Complex Life — 2012 NAI
- Molecular and Isotopic Investigations Across the Neoproterozoic — 2011 NAI
- Biomechanics of the Rangeomorph Fauna — 2011 NAI
- Atmospheric Oxygen and Complex Life — 2011 NAI
- Biomechanics of the Rangeomorph Fauna — 2010 NAI
- Environmental Oxygen and the Rise (And Fall) of Metazoans — 2010 NAI
- Geochemical Signatures of Multicellular Life — 2010 NAI
- Geochemical Signatures of Multicellular Life — 2009 NAI
- Environmental Oxygen and the Rise of Metazoans — 2009 NAI
- 3. Prebiotic Chemical and Isotopic Evolution on Earth — 2008 NAI
- Project 3. Prebiotic Chemical and Isotopic Evolution on Earth — 2007 NAI
- Project 3. Prebiotic Chemical and Isotopic Evolution on Earth — 2006 NAI
- Project 3. Prebiotic Chemical and Isotopic Evolution on Earth — 2005 NAI
- Prebiotic Chemical and Isotopic Evolution on Earth — 2004 NAI
- Isotopic and Molecular Tracers of Life — 2003 NAI
- View all 28 projects
NAI Project Collaborators
- Project collaborators as reported by the latest NAI Annual Report.
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Publications
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Halevy, I., Johnston, D. T., & Schrag, D. P. (2010). Explaining the Structure of the Archean Mass-Independent Sulfur Isotope Record. Science, 329(5988), 204–207. doi:10.1126/science.1190298
See Project -
Johnston, D. T., MacDonald, F. A., Gill, B. C., Hoffman, P. F., & Schrag, D. P. (2012). Uncovering the Neoproterozoic carbon cycle. Nature, 483(7389), 320–323. doi:10.1038/nature10854
See Project See Project -
Johnston, D. T., Poulton, S. W., Goldberg, T., Sergeev, V. N., Podkovyrov, V., Vorob’eva, N. G., … Knoll, A. H. (2012). Late Ediacaran redox stability and metazoan evolution. Earth and Planetary Science Letters, 335-336, 25–35. doi:10.1016/j.epsl.2012.05.010
See Project -
Johnston, D. T., Wolfe-Simon, F., Pearson, A., & Knoll, A. H. (2009). Anoxygenic photosynthesis modulated Proterozoic oxygen and sustained Earth’s middle age. Proceedings of the National Academy of Sciences, 106(40), 16925–16929. doi:10.1073/pnas.0909248106
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Tziperman, E., Halevy, I., Johnston, D. T., Knoll, A. H., & Schrag, D. P. (2011). Biologically induced initiation of Neoproterozoic snowball-Earth events. Proceedings of the National Academy of Sciences, 108(37), 15091–15096. doi:10.1073/pnas.1016361108
See Project - Creveling, J., Johnston, D.T. & Knoll, A.H. (2011). Geochemical controls on phosphatization taphonomy in the Middle Cambrian. Geological Society of America, 43(5): 53. See Project
- Ghisalberti, M., Jacobs, D.K., Gold, D.A., Laflamme, M., Clapham, M.E., Narbonne, G., Johnston, D.T. & Summons, R. (2011). Canopy Flow Models Identify A Scaling Advantage For Large Size In The Mistaken Point Rangeomorphs, The Worlds Oldest Community Of Multicellular Eukaryotes. Geological Society of America Annual Meeting. Minneapolis MN. See Project
- Gill, B., Knoll, A.H. & Johnston, D.T. (2011). Investigating geochemistry of the Wheeler Formation of Utah, USA: Insights into the redox environment of Burgess Shale-type fossil preservation. Geological Society of America, 43(5): 53. See Project
- Gold, D.A., Laflamme, M., Johnston, D.T., Summons, R.E. & Jacobs, D.K. (2010). Constraints on the Evolution of the Ediacara with Special Consideration of the Mistaken Point Rangeomorph Fauna. Astrobiology Science Conference 2010: Evolution and Life: Surviving Catastrophes and Extremes on Earth and Beyond. League City, Texas. See Project
- Halevy, I., Johnston, D.T. & Schrag, D.P. (2010). Constraints on the Archean Surface Environment from Mass-Independent Sulfur Isotopes (Invited). AGU Fall Meeting Abstracts, 14: 02. See Project
- View all 10 publications
