Christopher Ryan

  • Doctoral Student, Groffman Lab, Environmental Sciences Initiative

Christopher received his bachelor’s degree from the University of Florida where he double majored in Anthropology and in Women’s Studies and Gender Research, with a minor in African Studies. Following graduation, he worked in the Agronomy Department of the University of Florida, which eventually led to him getting a Master’s degree in Environmental Horticulture, with a minor in Agricultural Education and Communication.

This academic background in both the social and physical sciences led him to beginning a PhD in the Earth and Environmental Sciences Program of the CUNY Graduate Center, where he is currently a PhD candidate. His research specializes in the soil biogeochemistry of residential soils, particularly focused on yards and residential landscapes. More so, he is very interested in sociopolitical histories regarding long term environmental transformation yielding changes in carbon and nitrogen cycling. In particular, his research focuses on policies and initiatives that occurred at federal, municipal, and neighborhood scales to yield similar patterns of suburban sprawl across the United States. Additionally, he incorporates processes of Indigenous land dispossession as ultimate drivers of environmental transformation. He also works as an adjunct instructor teaching introductory classes in both earth and environmental sciences at both Brooklyn College and New York University.


C.D. Ryan, P.M. Groffman, J.M. Grove, S.J. Hall, J.B. Heffernan, S.E. Hobbie, D.H. Locke, J.L. Morse, C. Neill, K.C. Nelson, J. O'Neil-Dunne, R. Roy Chowdhury, M.K. Steele, and T.L.E. Trammell. Ecological homogenization of soil properties in the American residential macrosystem. Ecosphere2022, 13, 9, e4208.

C. Anderson, A. Bybee-Finley, J. Burke, M. Carlson, M. Henrickson, G.M. Koch, C. Ryan, M. Teresa Tancredi. LGBTQ+ Scientists and Allies: Fostering Community and Enacting Change. CSA News, 2021, 66, 11, 28-32.

C. Ryan. A Construction Boom in an Urban Floodplain—Long Island City, Queens, NYC. Metropolitics, 2020.

C.D. Ryan, J.B. Unruh, K.E. Kenworthy, A.J. Lamm, J.E. Erickson, L.E. Trenholm. Culture, science, and activism in Florida lawn and landscape fertilizer policy. HortTechnology, 2019, 29, 6, 854-865.

C.D. Ryan, K.E. Kenworthy, A.J. Lamm, L.E. Trenholm, J.B. Erickson, and J. Unruh. Adopting seasonal fertilizer blackout periods. Golf Course Management, 2017, 85, 8, 79.

T.W. Shaddox, C.D. Ryan, and K. Tang. Reference ranges: A novel interpretation of turfgrass nutrient values. Agricultural & Environmental Letters, 2017, 2, 1, 160046.

C.D. Ryan, and L. Alexa. Extension's Role in Developing Opinion Leaders to Drive Water Conservation. Journal of Extension, 2017, 55, 1, 10.