Position: Associate Professor, Department of Oceanography and Coastal Sciences
Office: 1143 Energy, Coast and Environment Building
My research group focuses on understanding the fate and transport of different forms of carbon in coastal and deep ocean. Photosynthetic fixation of CO2 in surface ocean into different forms of organic carbon effectively removes CO2 from atmosphere. In absence of this process, our atmospheric CO2 concentration would have been ~50% higher than it is at present times. Understanding this process known as the “biological pump” is extremely important in determining the role of ocean in controlling atmospheric CO2and how that might change in future. However a large fraction of this organic carbon fixed by phytoplankton in the ocean gets released back into the water column and atmosphere as CO2 and other inorganic forms of carbon via respiration and microbial decomposition. Thus the availability of organic carbon can directly and indirectly impact various biogeochemical processes in the ocean like formation of hypoxia, increase in ocean acidification, release of various redox sensitive elements and contaminants from the sediments. My research group at LSU seeks to provide answers to some of these fundamental questions related to ocean carbon biogeochemistry and environmental quality through field based observations, natural isotope tracers and laboratory microcosm experiments. Current research themes include -
Upper ocean particle dynamics and biological pump.
Fate and transport of organic matter and contaminants in aquatic systems.
Utilization of artificial and natural radioisotopes to study environmental processes.
Sediment geochemistry and chemical processes at sediment-water interface.
OCS4126/GEOL4081: Chemical Oceanography
OCS7131: Marine Sediment Geochemistry
OCS7130: Marine Isotope Biogeochemistry
OCS3103: Global Biogeochemical Cycles
AWARDS & HONORS:
LSU Alumni Association Rising Faculty Research Award 2015
Joseph Lipsey, Jr. and Richard A. Lipsey Excellence in Teaching Award 2015
Tiger Athletic Foundation Undergraduate Teaching Award 2015
Woods Hole Oceanographic Institution Postdoctoral Fellowship 2007
PROFESSIONAL AFFILIATIONS AND SERVICE ACTIVITIES:
Associate Editor, Marine Chemistry
(last five years) *denotes student of Maiti
Starr, A. V., Bargu, S., Maiti, K., DeLaune, R. (2017). “The Effect of Atrazine on Louisiana Gulf Coast Estuarine Phytoplankton.” Archives of Environmental Contamination and Toxicology 72(2): 178-188.
Maiti, K, Bosu*, S., Adhikari*, P., D’Sa, E., Sutor, M., Longnecker, K. (2016). Export fluxes in northern Gulf of Mexico – Comparative Evaluation of Direct, Indirect and satellite based estimates. Marine Chemistry, 184, 60-77.
Kuanbo Z., Maiti, K. Dai, M., Kao, S., Buesseler, K. (2016) Does adsorption of dissolved organic carbon and thorium onto membrane filters affect the carbon to thorium ratios, a primary parameter in estimating export carbon flux? Marine Chemistry, 184, 1-10
D’Sa, E., Overton, E., Lohrenz, S., Maiti, K., Turner, E. R., Freeman, A. (2016) Changing Dynamics of Dissolved Organic Matter Fluorescence in the Northern Gulf of Mexico Following the DwH Oil Spill. Environment Science and Technology, 50, 4940-4950.
Adhikari*, P. L., Maiti, K., Bosu*, S., Jones, P.* (2016) 234Th as a tracer of vertical transport of polycyclic aromatic hydrocarbons in the northern Gulf of Mexico. Marine Pollution Bulletin, 107, 179-187.
Adhikari*, P. L., Maiti, K., Overton, E. (2016) Distribution and accumulation rates of polycyclic aromatic hydrocarbons in the northern Gulf of Mexico sediments. Environmental Pollution, 212, 413-423.
Babu, T., Tubana, B., Datnoff, L., Yzenas, J., Maiti, K. (2016) Release and sorption pattern of monosilicic acid from silicon fertilizers in different soils of Louisiana: A laboratory incubation study. Comm. in Soil Science and Plant Analysis, doi:10.1080/00103624.2016.1194995
Adhikari*, P. White, J., Maiti, K., Nguyen, N. (2015) Phosphorus speciation and sedimentary phosphorus release from the Gulf of Mexico sediments: Implication for Hypoxia. Estuarine, Coastal and Shelf Science, 164, 77-85.
Maiti K., Charette, M.A., Buesseler, K.O., Zhou, K., Henderson, P., Moore, W.S., Morris, P. (2015) Determination of particulate and dissolved Thorium-228 in seawater using a delayed coincidence counter. Marine Chemistry, 177, 196-202.
Jones*, P. Maiti K., McManus J. (2015) Lead-210 and Polonium-210 disequilibria in the Northern Gulf of Mexico Hypoxic Zone. Marine Chemistry, 169, 1-15.
Adhikari*, P. L., Maiti, K., Overton, E. (2015) Vertical fluxes of polycyclic aromatic hydrocarbons in the northern Gulf of Mexico. Marine Chemistry, 168, 60-68.
Liu K., McCloskey, T. A., Ortego, S., Maiti, K (2014) Sedimentary signature of Hurricane Isaac in a Taxodium swamp on the western margin of Lake Pontchartrain, Louisiana, USA Proceedings of the International Association of Hydrological Sciences, 367, 421-428.
Maiti K., Charette, M., Buesseler, K., Karu, M., (2013) An inverse relationship between production and export efficiency in the Southern Ocean. Geophysical Research Letters, 40, doi:10.1002/grl.50219.
Baskaran M., Church, T.M., Hong, G.-H., Kumar, A., Qiang, M., Maiti, K. and Bishop, J.K. (2013) Effects of flow rates and composition of the filter, and decay/in-growth correction factors involved with the determination of in-situ particulate 210Po and 210Pb in seawater. Limnology Oceanography Methods, 11, 126-138.
Maiti K., and 19 other (2012) Intercalibration studies of short lived Thorium-234 in the water column and marine particles. Limnology and Oceanography: Methods,10 631-644.
2018-2021 K. Maiti, W. Cai, C. Harris. “Sediment Geochemical Control on Ocean Acidification and Carbon Budget in a River Dominated Shelf System” National Science Foundation – Chemical Oceanography Program.
2018 – 2021 Z. Xue, K. Maiti, V. Rivera-Monroy, E. D’Sa. “Understanding and Quantifying Carbon Export to Coastal Oceans through Deltaic Systems” NASA – EPSCoR Program.
2017 – 2018 W. Cai, K. Maiti, B. Roberts, J. Lehrter, S. Lohrenz. A RAPID response to Hurricane Harvey's impacts on coastal carbon cycle, metabolic balance and ocean acidification” National Science Foundation – Chemical Oceanography Program.
2016 – 2017 T. Quirk, K. Maiti. “Assessing the Spatial Extent, Temporal Variability and Mechanisms of Inland Hypoxia in Louisiana Waters” – Water Resources Institute, USGS.
2016 – 2019 J. Krause, K. Maiti. ““The biotic and abiotic controls on the Silicon cycle in the northern Gulf of Mexico” - NSF Chemical Oceanography Program.
2015 – 2018 K. Maiti. “Disequilibria between Radium-226, Lead-210 and Polonium-210 in the Arctic Ocean and their implications for trace metal distribution” – NSF Chemical Oceanography Program.
2014 – 2017 K. Maiti, J. White, R. Delaune. “Delineating Areas of Enhanced Sediment Accumulation in the Northern Gulf of Mexico” – Bureau of Ocean Energy Management (BOEM) Environmental Studies Program.
2014-2015 K. Maiti. “Understanding in situ chemical processes at sediment-water interface in coastal Louisiana using an advanced benthic lander platform” – NSF EPSCoR Research Infrastructure Improvement.
2014 – 2017 V. Rivera-Monroy, K. Maiti. “A Novel Technique to Measure Nitrogen Fluxes in Newly Formed and Restored Marshes and Tidal Creeks: Developing Realistic Ecological Metrics for Eutrophication Assessment and Nutrient Budgets” – NOAA, Louisiana Sea Grant.
2013-2014 K. Maiti, V. Rivera-Monroy, L. Thibodeaux “Acquisition of an in situ microprofiler system for environmental research and education” – Louisiana Board of Regent, Traditional Enhancement Program.
2012 – 2014 M. Sutor, K. Maiti, E. Overton, M. Benfield. “Investigating the Potential Ecological Impacts of the Deepwater Horizon Oil Spill and the Biologically-mediated Mechanisms of Removal of Polycyclic Aromatic Hydrocarbons” – Gulf of Mexico Research Initiative.
2011 – 2013 K. Maiti. “Remobilization and Bioaccumulation of Polonium-210 in the Gulf of Mexico Hypoxia” – Louisiana Board of Regent Research Competitiveness Program.