Giacomo "Jack" DiTullio

Professor; Interim Director, Grice Marine Laboratory

Address: HML H212-H
Phone: 843.953.9196
Google Scholar:


B.S., St. Francis Xavier University

M.S., Ph.D., University of Hawaii

Research Interests

  • The ecological study of marine phytoplankton and how they can affect the biogeochemical cycling of iron, carbon, nitrogen, and sulfur.
  • The effects of trace metals (iron) on primary production in High Nutrient, Low Chlorophyll regions of the World's Oceans.

Courses Taught

BIO 342: General Oceanography
BIO 502
: Special Topics in Marine Biology
BIO 610
: Physical Oceanography
BIO 650
: Seminar in Marine Biology

Honors and Awards

College of Charleston, SSM Dean’s Distinguished Achievement Award, 2018

Duke University, McCurdy Visiting Scholar Award, Fall, 2015 

University of Napoli, Italia; Fulbright Distinguished Chair Award, Feb-Aug, 2015


Medical University of South Carolina, Graduate Faculty, 2003- present


Jack DiTullio's Google Scholar profile:

Peer-reviewed publications (since 2010)

Cohen, N.R., M.R. McIlvin, D. M. Moran, N. A. Held, J.K.Saunders, N.J. Hawco, M. Brosnahan, G.R. DiTullio, C. Lamborg, J.P. McCrow, C. Dupont, A.E. Allen, and M. Saito. 2021. Dinoflagellates alter their carbon and nutrient metabolic strategies across environmental gradients in the central Pacific Ocean. Nature Microbiology, doi:10.1038/s41564-020-00814-7.

Schanke, N. L., F. Bolinesi, O. Mangoni, C. Katlein, P. Anhaus, M. Hoppmann, P. A. Lee, and G. R. DiTullio Biogeochemical and ecological variability during the late summer–early autumn transition at an ice-floe drift station in the Central Arctic Ocean, Limnology and Oceanography, doi:10.1002/lno.11676

Hawco, N.J., M.M. McIlvin, R.M. Bundy, A. Tagliabue, T.J. Goepfert, D.M. Moran, L. Valentin-Alvarado, G.R. DiTullio and Mak A. Saito. 2020. Minimal cobalt metabolism in the marine cyanobacterium Prochlorococcus. Proceedings of the National Academy of Sciences 117: 15,740-15,747; doi 10.1073/pnas.2001393117.

Lees L,  Bland AM, DiTullio GR, Janech MG, Lee PA. 2020. Effect of flow rate and freezing on cyanocobalamin recovery using a commercial solid phase extraction cartridge. Annals of  Marine Science 4(1): 014-018. DOI:

Castagno, P., V. Capozzi, G.R. DiTullio, P. Falco, G. Fusco, S.R. Rintoul, G. Spezie, and G. Budillon. 2019. Rebound of shelf water salinity in the Ross Sea, Antarctica. Nature Communications, 10(1):1–6, 2019.

Mangoni, O., M. Saggiomo, F. Bolinesi, M. Castellano, P. Povero, V. Saggiomo, and G.R. DiTullio. 2019. Phaeocystis antarctica unusual summer bloom in stratified Antarctic coastal waters (Terra Nova Bay, Ross Sea), Marine Environmental Research 151:1-14.

Laber, C. P., J. E. Hunter, F. Carvalho, J. R. Collins, E. J. Hunter, B. M. Schieler, E. Boss, K. More, M. Frada, K. Thamatrakoln, C. M. Brown, L. Haramaty, J. Ossolinski, H. Fredricks, J. I. Nissimov, R. Vandzura, U. Sheyn, Y. Lehahn, R. J. Chant, A. M. Martins, M. J. L. Coolen, A. Vardi, G. R. DiTullio, B. A. S. Van Mooy and K. D. Bidle. 2018. Coccolithovirus facilitation of carbon export in the North Atlantic. Nature Microbiology. 10.1038/s41564-018-0128-4.

Bender, S.J., D.M. , M.R. Mcllvin, H. Zheng, J.P. McCrow, J. Badger, G.R. DiTullio, A.E.Allen and M.A. Saito. 2018. Iron triggers colony formation in Phaeocystis antarctica: connecting molecular mechanisms with iron biogeochemistry. Biogeosciences, 15: 4923-4942;

Barak-Gavish, N., M.J. Frada, C. Ku, P.A. Lee, G.R. DiTullio, S. Malitsky, A.Aharoni, S.J. Green, R. Rotkopf, E. Kartvelishvily, U. Sheyn, D. Schatz and A. Vardi. 2018. Bacterial virulence against and oceanic bloom-forming phytoplankter is mediated by algal DMSP. Science Advances, 4:eaau5716.

DiTullio, G.R., P. Mariani, G. Benassai, D. DiLuccio and L. Grieco. 2018.  Sustainable use of marine resources through offshore wind and mussel farm co-location. Ecological Modelling, 367: 34-41.

Kirchman, D.L., M.T. Cottrell, and G.R. DiTullio. 2017. Shaping of bacterial community composition and diversity by phytoplankton and salinity in the Delaware Estuary, USA. Aquatic Microbial Ecology 78: 93-106; doi: 10.3354/ame01805.

Santoro, A. E., M.A. Saito, T. J. Goepfert, C. H. Lamborg, C.L. Dupont, and G. R. DiTullio. 2017. Thaumarchaeal ecotype distributions across the equatorial Pacific Ocean and their potential roles in nitrification and sinking flux attenuation. Limnology and Oceanography 62: 1984-2003; doi: 10.1002/lno.10547.

Fulton, J.M., B.J. Kendrick, G.R. DiTullio, and B.A.S. Van Mooy. 2017. Alkenone unsaturation during virus infection of Emiliania huxleyi. Organic Geochemistry, 111:82-85.

Teta, R.,  V. Romano, G. Della Sala, S. Picchio, C. De Sterlich, A. Mangoni, G.R.DiTullio, V. Costantino, and M. Lega. 2017. Cyanobacteria as indicators of water quality in Campania coasts, Italy: a monitoring strategy combining remote/proximal sensing and in situ data. Environmental Research Letters, 12:1-12;doi:10.1088/1748-9326/aa5649.

Lee, P. A., E. M. Bertrand, M. A. Saito and G. R. DiTullio 2016. Influence of vitamin B12 availability on oceanic dimethylsulfide and dimethylsulfoniopropionate. Environmental Chemistry 13(2): 293-301.

Persson, A., B.C. Smith, T. Cyronak, E. Cooper and G.R. DiTullio. 2016. Differences in pigmentation between life cycle stages in Scripsiella lachrymose (Dinophyceae). Journal of Phycology 52: 64-74. doi:10.1111/jpy.12364. 

Lyon, B.R., J.M. Bennett, P.A. Lee, M. Janech and G.R. DiTullio. 2016. Role of dimethyl-sulfoniopropionate as an osmoprotectant following gradual salinity shifts in the sea-ice diatom Fragilariopsis cylindrus, Environmental Chemistry,

Collins, J.R., B.R. Edwards, K. Thamatrakoln, J.E. Ossolinski, G.R. DiTullio, K.D. Bidle,S.C. Doney, and B.A.S. Van Mooy. 2015. The multiple fates of sinking particles in the North Atlantic Ocean. Global Biogeochemical Cycles 29: 1471–1494, doi:10.1002/2014GB005037.

Reed,M.L., G.R. DiTullio, S. Kacenas and D.I. Greenfield. 2015. Synergistic effects of nitrogen and dissolved organic carbon on microplankton abundances in four coastal South Carolina systems. Aquatic Microbial Ecology 76: 1–14, doi: 10.3354/ame01764.90.

Saito, M.A., M.R. Mcllvin, D.W. Moran, A. Dorsk, G.R. DiTullio, A. Post and M. Rappe. 2015. Needles in the Blue Sea: Sub-Species Specificity in Targeted Protein Biomarker Analyses Within the Vast Oceanic Microbial Metaproteome. Proteomics, 00, 1–11, doi 10.1002/pmic.201400630.

Kendrick, B.J., G.R. DiTullio, T.J. Cyronak, J.M. Fulton, B. Van Mooy, and K.D. Bidle. 2014. Temperature-induced viral resistance in Emiliania huxleyi (Prymnesiophyceae). PLoS ONE 9(11): e112134, doi:10.1371/journal.pone.0112134.

Cyronak, T, E. O’Reilly, P.A. Lee, and G.R. DiTullio. 2014. In-situ determination of cellular DMSP and pigment quotas in a Prorocentrum minimum bloom near the Falkland Islands. Advances in Oceanography and Limnology doi:10.1080/19475721.2014.968620.

Saito, M.A., M.R. Mcllvin, D.W. Moran, T.J. Goepfert, G.R. DiTullio, A. Post and C.H. Lamborg. 2014. Multiple nutrient stresses at intersecting Pacific Ocean biomes detected by protein biomarkers. Science 345:1173-1177.

Lehahn, Y., I.Koren, D. Schatz, M. Frada, U. Sheyn, E. Boss, S. Efrati, Y. Rudich, M. Trainic, S. Sharoni, C. Laber, G.R. DiTullio, M.J.L. Coolen, A.M. Martins, B.A.S. Van Mooy, K. Bidle and A. Vardi. 2014. Decoupling physical and biological processes to assess the impact of viruses on a mesoscale algal bloom. Current Biology 24:2041-2046;

Fulton, J.M., H.F. Fredricks, K.D. Bidle, A. Vardi, B.J. Kendrick, G.R. DiTullio and B.A.S. Van Mooy. 2014. Novel molecular determinants of viral susceptibility and resistance in the lipidome of Emilania huxleyi. Environmental Microbiology 16:1137-1149; doi: 10.1111/1462-2920.12358

Smith, W. O., S. Tozzi, M. C. Long, P. N. Sedwick, J. A. Peloquin, R. B. Dunbar, D. A.Hutchins, Z. Kolber, and G. R. DiTullio, 2013, Spatial and temporal variations in variable fluoresence in the Ross Sea (Antarctica): Oceanographic correlates and bloom dynamics, Deep Sea Research Part I: Oceanographic Research Papers, 79(0), 141-155.

Peloquin, J., and others. 2013. The MAREDAT global database of high performance liquid chromatography marine pigment measurements. Earth Syst. Sci. Data, 5, 109–123.

Noble, A.E. M.A. Saito, C.H. Lamborg, D.C. Ohnemus, P.J. Lam, T.J. Goepfert, C.Measures, C.H. Frame, K.L. Casciotti, G.R. DiTullio and Joe Jennings. 2012. Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean. Limnology and Oceanography 57:989-1010; doi:10.4319/lo.2012.57.4.0989

Boroujerdi, A.F.B., P.A. Lee, G.R. DiTullio, M.G. Janech, S.B. Vied and D.W. Bearden. 2012. Identification of Isethionic Acid and other small molecule metabolites
of Fragilariopsis cylindrus with nuclear magnetic resonance. Analytical and Bioanalytical Chemistry doi:10.1007/s00216-012-6169-2

McLenon, A.L. and G.R. DiTullio. 2012. Effects of increased temperature on dimethylsulfoniopropionate (DMSP) concentration and methionine synthase activity in Symbiodinium microadriaticum. Biogeochemistry 110:17-29, doi:10.1007/s10533-012-9733-0

Herrmann, M., R.G. Najjar, K. McElroy, A.R. Neeley, M. Vila-Costa, G.R. Westby, J. Dacey, G.R. DiTullio, D.J. Kieber, R.P. Kiene, R. Simó and M. Vernet. 2012. Diagnostic modeling of dimethylsulfide production in coastal water west of the Antarctic Peninsula. Continental Shelf Research 32:96-109; doi:10.1016/j.csr.2011.10.017

86. Sedwick, P. N., C. M. Marsay, B. M. Sohst, A. M. Aguilar-Islas, M. C. Lohan, M. C. Long, K. R. Arrigo, R. B. Dunbar, M. A. Saito, W. O. Smith, and G. R. DiTullio. 2011. Early season depletion of dissolved iron in the Ross Sea polynya: Implications for iron dynamics on the Antarctic continental shelf. Journal of Geophysical Research, 116, C12019, doi:10.1029/2010JC006553

Lyon, B.R., P.A. Lee, J.M. Bennett, G.R. DiTullio and M.G. Janech. 2011. Proteomics of Sea-ice Diatom Salinity Acclimation Gives New Insights into Dimethylsulfonio-propionate (DMSP) Production Pathway. Plant Physiology 157: 1926-1941, doi:10.1104/pp.111.185025

Tortell P.D., C. Guéguen, M.C. Long, C.D. Payne, P.A.Lee and G.R.DiTullio, 2011.Spatial variability and temporal dynamics of surface water pCO2, ΔO2/Ar and dimethylsulfide in the Ross Sea, Antarctica. Deep Sea Research Part I: Oceanographic Research Papers 58:241-259

Bertrand, E.M., M.A. Saito, P.A. Lee, R.B. Dunbar and G.R. DiTullio. 2011. Iron limitation of a springtime bacterial and phytoplankton community in the Ross Sea: implications for vitamin B12 nutrition. Frontiers in Aquatic Microbiology, 2:1-12, doi:10.3389/fmicb.2011.00160

Long, M.C., R.B. Dunbar, P.D. Tortell, W.O. Smith, D.A. Mucciarone and G.R. DiTullio. 2011. Vertical structure, seasonal drawdown and net community production in the Ross Sea, Antarctica. Journal of Geophysical Research 116, C10029, doi:10.1029/2009JC005954

Lee, P.A., S.F. Riseman, C.E. Hare, D.A. Hutchins, K. Leblanc and G.R. DiTullio. 2011. Potential impact of increased temperature and CO2 on particulate dimethylsulfoniopropionate in the Bering Sea. Advances in Oceanography and Limnology 2:33-47 doi:10.1080/19475721.2011.574433

Saito, M., T.J. Goepfert, A.E. Noble, P.N Sedwick and G.R. DiTullio. 2010. A Seasonal Study of Dissolved Cobalt in the Ross Sea of Antarctica: Micronutrient Control, Ecological Stoichiometry, and Absence of Scavenging. Biogeosciences, 7: 4059-4082, doi:10.5194/bg-7-4059-2010.

Feng, Y., C.E. Hare, J.M. Rose, S.M. Handy, G.R. DiTullio, P.A. Lee, W.O. Smith, Jr., J. Peloquin, S. Tozzi, J. Sun, Y. Zhang, R.B. Dunbar, M.C. Long, B. Sohst, M. Lohan and D.A. Hutchins. 2010. Interactive effects of CO2, irradiance and iron on a Ross Sea phytoplankton community. Deep-Sea Research I, 57: 368-383.

Smith, W.O. Jr., M. Dinniman, S. Tozzi, G.R. DiTullio, O. Mangoni, M. Modigh and V. Saggiomo. 2010. Phytoplankton photosynthetic pigments in the Ross Sea: patterns and relationships among functional groups. Journal of Marine Systems. 82:177-185.