Skip to main content

Eric Webb

Associate Professor of Biological Sciences

Contact Information
Phone: (213) 740-7954
Office: AHF 137

Personal Website


Ph.D. Bacteriology, University of Wisconsin-Madison, 6/1999
B.S. Microbiology, The Ohio State University, 6/1994

Postdoctoral Training

Postdoc Scholar, Woods Hole Oceanographic Institution, 1999-2001  

Academic Appointment, Affiliation, and Employment History

Associate Professor, University of Southern California, 05/13/2011-  
Assistant Professor, University of Southern California, 07/16/2006-05/13/2011  
Associate Scientist without Tenure, Woods Hole Oceanographic Institution, 02/01/2006-07/15/2006  
Assistant Scientist, Woods Hole Oceanographic Institution, 10/01/2001-01/31/2006  

Description of Research

Summary Statement of Research Interests

Marine cyanobacterial physiology, ecology, and genomics. Development of molecular methods to monitor nutrient and trace metal stress in situ in marine cyanobacteria; Molecular characterization of the Fe scavenging system of marine cyanobacteria and heterotrophic bacteria; secondary metabolite production (antibiotics and toxins) by marine and estuarine cyanobacteria.

Research Keywords

Marine Cyanobacteria, Physiology, Genomics, Microbial Ecology, Fe scavenging strategies


Journal Article

Walworth, N., Pfreundt, U., Nelson, W. C., Mincer, T., Heidelberg, J. F., Fu, F., Waterbury, J. B., del Rio, T. G., Goodwin, L., Kyrpides, N. C., Land, M. L., Woyke, T., Hutchins, D. A., Hess, W. R., Webb, E. A. (2015). Trichodesmium genome maintains abundant, widespread noncoding DNA in situ, despite oligotrophic lifestyle. Proceedings Of The National Academy Of Sciences Of The United States Of America/National Acad Sciences. pp. 201422332.
Momper, L. M., Reese, B. K., Carvalho, G., Lee, P., Webb, E. A. (2014). A novel cohabitation between two diazotrophic cyanobacteria in the oligotrophic ocean. The ISME Journal/Nature Publishing Group.
Sañudo-Wilhelmy, S. A., Gómez-Consarnau, L., Suffridge, C., Webb, E. A. (2014). The Role of B Vitamins in Marine Biogeochemistry. Annual Reviews. Vol. 6 (1), pp. 339-367.
Fu, F. X., Yu, E., Garcia, N. S., Gale, J., Luo, Y., Webb, E. A., Hutchins, D. A. (2014). Differing responses of marine N2 fixers to warming and consequences for future diazotroph community structure. Aquatic Microbial …. Vol. 72, pp. 33-46.
Rivers, A. R., Rose, A. L., Webb, E. A. (2013). An online calculator for marine phytoplankton iron culturing experiments. Journal Of Phycology. Vol. 49 (5), pp. 1017-1021.
Hutchins, D. A., Fu, F., Webb, E. A., Walworth, N., Tagliabue, A. (2013). Taxon-specific response of marine nitrogen fixers to elevated carbon dioxide concentrations. Nature Geoscience. Vol. 6 (9), pp. 790-795.
Barada, L. P., Cutter, L., Montoya, J. P., Webb, E. A., Capone, D. G., Sañudo-Wilhelmy, S. A. (2013). The distribution of thiamin and pyridoxine in the western tropical North Atlantic Amazon River plume. Frontiers in microbiology. Vol. 4
Luo, Y. W., Doney, S. C., Anderson, L. A., Benavides, M., Berman-Frank, I., Bode, A., Bonnet, S., Boström, K. H., Böttjer, D., Capone, D. G., Carpenter, E. J., Chen, Y. L., Church, M. J., Dore, J. E., Falcón, L. I., Fernández, A., Foster, R. A., Furuya, K., Gómez, F., Gundersen, K., Hynes, A. M., Karl, D. M., Kitajima, S., Langlois, R. J., LaRoche, J., Letelier, R. M., Marañón, E., McGillicuddy Jr, D. J., Moisander, P. H., Moore, C. M., Mouriño-Carballido, B., Mulholland, M. R., Needoba, J. A., Orcutt, K. M., Poulton, A. J., Rahav, E., Raimbault, P., Rees, A. P., Riemann, L., Shiozaki, T., Subramaniam, A., Tyrrell, T., Turk-Kubo, K. A., Varela, M., Villareal, T. A., Webb, E. A., White, A. E., Wu, J., Zehr, J. P. (2012). Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates. Earth System Science Data/Copernicus GmbH. Vol. 4 (1), pp. 47-73.
Sañudo-Wilhelmy, S. A., Cutter, L. S., Durazo, R., Smail, E. A., Gómez-Consarnau, L., Webb, E. A., Prokopenko, M. G., Berelson, W. M., Karl, D. M. (2012). Multiple B-vitamin depletion in large areas of the coastal ocean. Proceedings of the National Academy of Sciences/National Acad Sciences. Vol. 109 (35), pp. 201208755-14045.
Smail, E. A., Webb, E. A., Franks, R. P., Bruland, K. W., Sañudo-Wilhelmy, S. A. (2012). Status of Metal Contamination in Surface Waters of the Coastal Ocean off Los Angeles, California since the Implementation of the Clean Water Act. Environ. Sci. Technol/American Chemical Society. Vol. 46 (8), pp. 4304-4311.
Hynes, A. M., Webb, E. A., Doney, S. C., Waterbury, J. B. (2012). Comparison of Cultured Trichodesmium (Cyanophyceae) with Species Characterized From the Field. Journal Of Phycology. Vol. 48 (1), pp. 196-210.
Chappell, P. D., Moffett, J. W., Hynes, A. M., Webb, E. A. (2012). Molecular evidence of iron limitation and availability in the global diazotroph Trichodesmium. The ISME Journal/Nature Publishing Group. Vol. 6 (9), pp. 1728-1739.
Sohm, J. A., Edwards, B. R., Wilson, B. G., Webb, E. A. (2011). Constitutive Extracellular Polysaccharide (EPS) Production by Specific Isolates of Crocosphaera watsonii. Frontiers in Aquatic Microbiology. Vol. 2
Singer, E., Emerson, D., Webb, E. A., Barco, R. A., Kuenen, J. G., Nelson, W. C., Chan, C. S., Comolli, L. R., Ferriera, S., Johnson, J., Heidelberg, J. F., Edwards, K. J. (2011). Mariprofundus ferrooxydans PV-1 the First Genome of a Marine Fe(II) Oxidizing Zetaproteobacterium. PLoS ONE. Vol. 6 (9), pp. e25386.
Van Mooy, B. A., Hmelo, L. R., Sofen, L. E., Campagna, S. R., May, A. L., Dyhrman, S. T., Heithoff, A., Webb, E. A., Momper, L., Mincer, T. (2011). Quorum sensing control of phosphorus acquisition in Trichodesmium consortia. The ISME Journal. Vol. 6 (2), pp. 422-429.
Sohm, J. A., Hilton, J. A., Noble, A. E., Zehr, J. P., Saito, M. A., Webb, E. A. (2011). Nitrogen fixation in the South Atlantic Gyre and the Benguela Upwelling System. Geophysical Research Letters. Vol. 38, pp. -.
Sohm, J. A., Webb, E. A., Capone, D. G. (2011). Emerging patterns of marine nitrogen fixation. Nature Reviews Microbiology. Vol. 9 (7), pp. 499-508.
Hynes, A. M., Webb, E. A., Doney, S. C., Waterbury, J. B. (2011). Comparison of cultured Trichodesmium (Cyanophyceae) with species characterized from the field. in press at J. Phyc..
Singer, E., Webb, E. A., Nelson, W. C., Heidelberg, J. F., Ivanova, N., Pati, A., Edwards, K. J. (2011). Genomic Potential of Marinobacter aquaeolei, a Biogeochemical "Opportunitroph". Applied And Environmental Microbiology. Vol. 77 (8), pp. 2763-2771.
Bonnet, S., Webb, E. A., Panzeca, C., Karl., D., Capone, D., Sanudo-Wilhelmy, S. A. (2010). Vitamin B12 excretion by cultures of the marine cyanobacteria Crocosphaera and Synechococcus. Limnol Oceanogr. Vol. 55 (5), pp. 1959–1964.
Chappell, P. D., Webb, E. A. (2010). A Molecular Assessment of the Iron Stress Response in the Two Phylogenetic Clades of Trichodesmium. Environ Microbiol. Vol. 12 (1), pp. 13-27.
Orchard, E. D., Webb, E. A., Dyhrman, S. T. (2009). Molecular analysis of the phosphorus starvation response in Trichodesmium spp. Environ Microbiol. Vol. 11 (9), pp. 2400–2411.
Hynes, A. M., Chappell, P. D., Dyhrman, S. T., Doney, S. C., Webb, E. A. (2009). Cross-basin comparison of phosphorus stress and nitrogen fixation in Trichodesmium. Limnol Oceanogr. Vol. 54 (5), pp. 1438–1448..
Homann, V., Edwards, K., Webb, E. A., Butler, A. (2009). Siderophores of Marinobacter aquaeolei: petrobactin and its sulfonated derivatives. Biometals. Vol. 22 (4), pp. 565-571.
Van Mooy, B. A., Fredricks, H. F., Pedler, B. E., Dyhrman, S. T., Karl, D. M., Lomas, M. W., Mincer, T., Moore, L. R., Moutin, T., Rappe, M. S., Webb, E. A. (2009). Phytoplankton in the ocean use non-phosphorus lipids in response to phosphorus scarcity. Nature. Vol. 458 (7234), pp. 69-72.
Webb, E. A., Ehrenreich, I. M., Brown, S., Valois, F. W., Waterbury, J. B. (2009). Phenotypic and Genotypic Characterization of Multiple Strains of the Diazotrophic Cyanobacterium, Crocosphaera watsonii, isolated from the Open Ocean. Environ Microbiol. Vol. 11, pp. 338-348.
Rivers, A. R., Jakuba, R. W., Webb, E. A. (2009). Iron stress genes in marine Synechococcus and the development of a flow cytometric iron stress assay. Environ Microbiol. Vol. 11, pp. 382 - 396.
Rose, A. L., Webb, E. A., Waite, T. D., Moffett, J. W. (2008). Measurement and Implications of Steady-State Superoxide Concentrations in the Equatorial Pacific Ocean. Environ Sci Technol. Vol. 42 (7), pp. 2387–2393.
Webb, E. A., Rachel, J., Moffett, J. W., Dyhrman, S. T. (2007). Molecular Assessment of Phosphorus and Iron Physiology in Trichodesmium Populations from the Western Central and Western South Atlantic. Limnology and Oceanography/ASLO. Vol. 52(5), pp. 2221–2232.
Dyhrman, S. T., Chappell, P. D., Haley, S. T., Orchard, E. D., Waterbury, J. B., Webb, E. A. (2006). Phosphonate utilization by the globally important marine diazotroph Trichodesmium. Nature. Vol. 439, pp. 68-71.
Ehrenreich, I. M., Waterbury, J. B., Webb, E. A. (2005). The Distribution and Diversity of Natural Product Genes in Marine and Freshwater Cyanobacterial Cultures and Genomes. Applied and Environmental Microbiology/ASM. Vol. 71, pp. 7401-7413.
Orchard, E. D., Webb, E. A., Dyhrman, S. T. (2003). Characterization of Phosphorus-Regulated Genes in Trichodesmium spp. Biological Bulletin/Marine Biological Laboratory. Vol. 205, pp. 230–231.
Webb, E. A., Waterbury, J. B. (2001). Iron Stress in Open Ocean Cyanobacteria (Synechococcus, Trichodesmium, and Crocosphaera): Identification of the IdiA protein. Applied and Environmental Microbiology/ASM. Vol. 67, pp. 5444-5452.

Service to the Profession

Professional Memberships

International Society for Microbial Ecology, 2006-2011  
American Society of Limnology and Oceanography, 2000-2011  
American Society for Microbiology, 1995-2011  
Faculty may update their profile by visiting