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
Ducklow, HW, Stukel, MR, Eveleth, R, Doney, SC, Jickells, T, Schofield, O, Baker, AR, Brindle, J, Chance, R, and Cassar, N. "Spring-summer net community production, new production, particle export and related water column biogeochemical processes in the marginal sea ice zone of the Western Antarctic Peninsula 2012-2014." Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences 376, no. 2122 (June 2018).
Wang, S, Lin, Y, Gifford, S, Eveleth, R, and Cassar, N. "Linking patterns of net community production and marine microbial community structure in the western North Atlantic." The Isme Journal (May 2018).
Cassar, N, Tang, W, Gabathuler, H, and Huang, K. "Method for High Frequency Underway N2 Fixation Measurements: Flow-Through Incubation Acetylene Reduction Assays by Cavity Ring Down Laser Absorption Spectroscopy (FARACAS)." Analytical Chemistry 90, no. 4 (February 6, 2018): 2839-2851.
Li, Z, and Cassar, N. "A mechanistic model of an upper bound on oceanic carbon export as a function of mixed layer depth and temperature." Biogeosciences 14, no. 22 (November 14, 2017): 5015-5027.
Lin, Y, Cassar, N, Marchetti, A, Moreno, C, Ducklow, H, and Li, Z. "Specific eukaryotic plankton are good predictors of net community production in the Western Antarctic Peninsula." Scientific reports 7, no. 1 (November 2017): 14845-.
Biological and physical drivers of O2 saturation and net community production variability at the Western Antarctic Peninsula awarded by National Science Foundation
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
The Biogeochemical Compass: Navigating the Flows of Energy and Matter within the Southern Ocean awarded by Antarctic Circumnavigation Expedition
CAREER: Method development for high-resolution underway N2 fixation measurements awarded by National Science Foundation
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
Environment 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)