Nicolas Cassar

Nicolas Cassar

Associate Professor of Biogeochemistry

Primary Appointment

Earth & Ocean Sciences Division

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


Moreno, CM, Lin, Y, Davies, S, Monbureau, E, Cassar, N, and Marchetti, A. "Examination of gene repertoires and physiological responses to iron and light limitation in Southern Ocean diatoms (Accepted)." Polar Biology (December 18, 2017): 1-18.
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-.
Eveleth, R, Cassar, N, Doney, S, Munro, D, and Sweeney, C. "Biological and physical controls on O 2 /Ar, Ar and p CO 2 variability at the Western Antarctic Peninsula and in the Drake Passage." Deep Sea Research Part II: Topical Studies in Oceanography 139 (May 2017): 77-88.
Eveleth, R, Cassar, N, Sherrell, R, Ducklow, H, Meredith, M, Venables, H, Lin, Y, and Li, Z. "Ice melt influence on summertime net community production along the Western Antarctic Peninsula." Deep Sea Research Part II: Topical Studies in Oceanography 139 (May 2017): 89-102.

Recent Grants


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)

Video: Wang recalls NASA research cruise


Contact Information

Box 90227
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)