Associate Professor of Biogeochemistry
Nicolas Cassar's research focuses on environmental biogeochemistry and physiology, with the objective of constraining the mechanisms governing carbon cycling and climate. Current research interests include ocean carbon cycles and productivity; carbon acquisition mechanisms in marine phytoplankton and implications for climate change and paleo-CO2 reconstruction; and global carbon cycle and ocean-atmosphere fluxes. His scientific approach is interdisciplinary, integrating field observations, laboratory experiments, modeling and theory.
In The News
Lin, Y, Gifford, S, Ducklow, H, Schofield, O, and Cassar, N. "Towards Quantitative Microbiome Community Profiling Using Internal Standards." Applied and Environmental Microbiology 85, no. 5 (March 2019).
Berthelot, H, Duhamel, S, L'Helguen, S, Maguer, J-F, Wang, S, Cetinić, I, and Cassar, N. "NanoSIMS single cell analyses reveal the contrasting nitrogen sources for small phytoplankton." The Isme Journal 13, no. 3 (March 2019): 651-662.
Tang, W, Wang, S, Fonseca-Batista, D, Dehairs, F, Gifford, S, Gonzalez, AG, Gallinari, M, Planquette, H, Sarthou, G, and Cassar, N. "Revisiting the distribution of oceanic N2 fixation and estimating diazotrophic contribution to marine production." Nature Communications 10, no. 1 (February 19, 2019): 831-null.
Li, Z, and Cassar, N. "Theoretical Considerations on Factors Confounding the Interpretation of the Oceanic Carbon Export Ratio." Global Biogeochemical Cycles 32, no. 11 (November 2018): 1644-1658.
Nevison, C, Munro, D, Lovenduski, N, Cassar, N, Keeling, R, Krummel, P, and Tjiputra, J. "Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models." Geophysical Research Letters 45, no. 19 (October 16, 2018): 10-559.
Biological and physical drivers of O2 saturation and net community production variability at the Western Antarctic Peninsula awarded by National Science Foundation
CAREER: Method development for high-resolution underway N2 fixation measurements awarded by National Science Foundation
The Biogeochemical Compass: Navigating the Flows of Energy and Matter within the Southern Ocean awarded by Antarctic Circumnavigation Expedition
Quantifying the carbon export potential of the marine microbial community: Coupling of biogenic rates and fluxes with genomics at the ocean surface awarded by University of North Carolina - Chapel Hill
EOS 364S: Changing Oceans (EOS 364S: Changing Oceans)
EOS 394: Research Independent Study (EOS 394: Research Independent Study)
EOS 791: Independent Study (EOS 791: Independent Study)
EOS 525: Fundamentals of Water Biogeochemistry and Pollution (EOS 525: Fundamentals of Water Biogeochemistry and Pollution)
EOS 393: Research Independent Study (EOS 393: Research Independent Study)
Durham, NC 27708
Grainger Hall, 9 Circuit Drive (Eh5118), Nicholas School Of The Environment
Durham, NC 27708
Ph.D., University of Hawaii at Manoa (2003)
B.S., McGill University (Canada) (1997)