Sam Simkin

Sam Simkin CV

INSTAAR Affiliate

  • Staff Scientist, NEON


  • PhD: Cornell University, 2012
  • MS: University of Georgia, 1998
  • BA: Earlham College, 1995

Contact Information


Ecosystem ecology, plant community ecology, biogeochemistry, landscape ecology

Research Interests

I am currently researching plant diversity along large gradients of atmospheric nitrogen deposition as part of a national synthesis funded by the USGS Powell Center and the Environmental Protection Agency. Additional interests include wetland plant diversity as influenced by sulfide biogeochemistry, landscape patterns of atmospheric deposition, and impacts of fire and soil disturbance on plant community composition.


  • EPA STAR (Science to Achieve Results) Fellowship, Environmental Protection Agency, 2006
  • NSF IGERT Fellowship in Biogeochemistry and Environmental Biocomplexity at Cornell University, National Science Foundation, 2004


Active Research

Research Labs and Groups



Clark, C. M., Sam Simkin, Allen, E. B., Bill Bowman, Belnap, J., Brooks, M. L., Collins, S. L., Geiser, L. H., Gilliam, F. S., Jovan, S. E., Pardo, L. H., Schulz, B. K., Stevens, C. J., Katharine Suding, Throop, H. L., Waller, D. M. 2019: Potential vulnerability of 348 herbaceous species to atmospheric deposition of nitrogen and sulfur in the United States. Nature Plants, 5(7): 697-705. DOI: 10.1038/s41477-019-0442-8

Sam Simkin, Allen, E. B., Bill Bowman, Clark, C. M., Belnap, J., Brooks, M. L., Cade, B. S., Collins, S. L., Geiser, L. H., Gilliam, F. S., Jovan, S. E., Pardo, L. H., Schulz, B. K., Stevens, C. J., Katharine Suding, Throop, H. L., Waller, D. M. 2016: Conditional vulnerability of plant diversity to atmospheric nitrogen deposition across the United States. Proceedings of the National Academy of Sciences, 113(15): 4086-4091. DOI: 10.1073/pnas.1515241113

Sam Simkin, Bedford, B. L., Weathers, K. C. 2013: Phytotoxic sulfide more important than nutrients for plants within a groundwater-fed wetland. Ecosystems, 16(6): 1118-1129. DOI: 10.1007/s10021-013-9671-2