I am a biological oceanographer who studies the complex feedbacks between global change (urbanization, nutrients, climate, etc.) and coastal phytoplankton ecology & biogeochemistry. This includes but is not limited to algal blooms, food web processes, and novel molecular technologies. I am always looking for enthusiastic new students. Please contact me via email if you have interest in working in my laboaratory.
*= Lead author is a student.
*Sitta, K., Callahan, T., Doll, C., Mortensen, R., Reed M., and D.I. Greenfield (2018) The influences of nitrogen form and zooplankton grazing on phytoplankton assemblages in two coastal southeastern systems. Limnology and Oceanography. DOI: 10.1002/lno.10957.
*Main, C., Greenfield, D.I., Doll, C., Wang, Y., Mortensen, R., Whereat, E.B., Pettay, D.T., and Coyne, K.C (2018) Critical comparison of molecular methods for detection and enumeration of the harmful algal species, Heterosigma akashiwo, in environmental water samples. Journal of Applied Phycology. 30: 2425-2434. DOI: 10.1007/s10811-018-1444-z.
*Van Meerssche, E., Greenfield, D.I. and J.L. Pinckney (2018) Coastal eutrophication and freshening: Impacts on Pseudo-nitzschia abundance and domoic acid allelopathy. Estuarine, Coastal, and Shelf Science. 209: 70-79. DOI: 10.1016/j.ecss.2018.05.013.
Pinckney, J.L., Tomas, C., Greenfield, D.I., Reale-Munroe, K., Castillo, B., Hillis-Starr, Z., Van Meerssche, E. and M. Zimberlin (2018) Seasonal changes in phytoplankton community structure in a bioluminescent lagoon, St. Croix, US Virgin Islands. Aquatic Microbial Ecology. 81: 109-124. DOI: 10.3354/ame01865.
Greenfield, D.I., Moore, J., Stewart, J.R., Hilborn, E.D., George, B.J., Li, Q., Dickerson, J, Keppler, C.K. and P.A. Sandifer (2017) Temporal and environmental factors driving Vibrio vulnificus and V. parahaemolyticus populations and their associations with harmful algal blooms in South Carolina detention ponds and receiving tidal creeks. GeoHealth. 1 (9) 306-317. DOI: 10.1002/2017/GH000094.
*Reed, M., Pinckney, J.L., Keppler, C.K., Brock, L.M., Hogan, S.B. and D.I. Greenfield. (2016) The influence of nitrogen and phosphorus on seasonal phytoplankton biomass and community composition in four South Carolina systems. Estuarine, Coastal and Shelf Science. 177: 71-82. DOI: 10.1016/j.ecss.2016.05.002.
*Mortensen, R., Arnott, S., Jones, W.J. and D.I. Greenfield (2015) Development of a sandwich hybridization assay for the identification and quantification of red drum (Sciaenops ocellatus) eggs: a novel tool for fishery research and management. Canadian Journal of Fisheries and Aquatic Sciences. 72: 915-925. DOI: 10.1139/cjfas-2014-0526.
*Doll, C., Main, C., Bianco, C., Coyne, K. and D.I. Greenfield (2014) Comparison of sandwich hybridization assay and quantitative PCR for the quantification of live and preserved cultures of Heterosigma akashiwo (Raphidophyceae). Limnology and Oceanography: Methods. 12: 232-245. DOI: 10.4319/lom.2014.12.232.
Ryan, J., Greenfield, D.I., Marin, R. III, Preston, C., Birch, J., Doucette, G.J. and C.A. Scholin (2011) Harmful phytoplankton ecology studies using a molecular/environmental observing network. Limnology and Oceanography. 56: 1255-1272. DOI: 4319/lo.2011.56.4.1255.