Assistant Professor

Education

• B.A., Biology 1986 - Cornell University, Ithaca, New York
• Ph.D, Marine Biology (1996) - University of California, San Diego, Scripps Institution of Oceanography, La Jolla, California

Research Interests

• Marine Microbial Ecology
• Molecular Ecology of Viruses and Bacteria
• Oceans and Human Health

Research Activities

• Determining the contribution of viruses to mortality in planktonic communities
• Assessing molecular and morphological diversity of marine viruses and bacteria
• Investigating the ecology of human pathogens in coastal water
   

Ten Selected Publications

Culley AI & GF Steward (2007). New genera of RNA viruses in subtropical seawater inferred from polymerase gene sequences. Applied and Environmental Microbiology 73 (18), 5937-5944.
 
Steward GF, LB Fandino, JT Hollibaugh, TE Whitledge, F Azam (2007) Microbial biomass and viral infections of prokaryotes in the mid-waters of the central Arctic Ocean. Deep-Sea Research I 54 (10), 1744-1757.
 
Steward GF, MS Rappé, 2007. What's the "meta" with metagenomics? The ISME Journal 1 (2), 100-102.
 
Moisander PH, L Shiue, GF Steward, BD Jenkins, BM Bebout, JP Zehr (2006) Application of an oligonucleotide microarray for profiling diversity of N2-fixing microorganisms and nifH gene expression in marine microbial mats. Environmental Microbiology 8(10): 1721-1735
 
Workman, M, OD Nigro, & GF Steward (2006) Identification of prophages in coastal water isolates of Staphylococcus aureus. Journal of Young Investigators 15.
 
Brum JR, GF Steward, S Jiang, & R Jellison (2005) Spatial and Temporal variability of bacteria, viruses, and viral infections of prokaryotes in an alkaline, hypersaline lake. Aquatic Microbial Ecology
 
Steward, GF, BD Jenkins, BB Ward & JP Zehr (2004) Development and testing of a DNA macroarray to assess nitrogenase (nifH) gene diversity. Applied and Environmental Microbiology 70: 1455-1465
 
Steward GF, JL Montiel & F Azam (2000) Genome size distributions indicate variability and similarities among marine viral assemblages from diverse environments. Limnology and Oceanography 45: 1697-1706
 
Rohwer F, A Segall, G Steward, V Seguritan, M Breitbart, F Wolven & F Azam (2000) The complete genomic sequence of the marine phage Roseophage SIO1 indicates homology with non-marine phages. Limnology and Oceanography 45: 408-418
 
Steward GF & F Azam (1999) Bromodeoxyuridine as an alternative to 3H-thymidine for measuring bacterial productivity in aquatic samples. Aquatic Microbial Ecology 19: 57-66

Active Research Grants

NOAA (Ocean Observing) Hawaii-Pacific Ocean Observing and Information System (2007 Oct 01– 2010 Sep 30) PIs: Brian Taylor, Bruce Applegate, Whitlow Au, Benjamin Brooks, Eric DeCarlo, Margo Edwards, Pierre Flament, Charles Fletcher, Kim Holland, Roger Lukas, Margaret McManus, Mark Merrifield, Geno Pawlak, Jim Potemra, John Sibert, Grieg Steward

NSF (Science and Technology Center) Center for Microbial Oceanography – Research and Education (C-MORE). (2006 Aug 01– 2011 Jul 31) PIs: Dave Karl, Ed DeLong, Sallie Chisholm, Jonathan Zehr

Hawaii Sea Grant Microbial community responses to environmental forcing in Kaneohe Bay (2005 – 2007) $100,047 (+ $54,000 cost-share) PIs: Mike Rappé, Grieg Steward

NIEHS and NSF (Centers for Ocean and Human Health) Pacific Research Center for Marine Biomedicine - Research Core 2:Microbial pathogens in tropical coastal waters: an ecosystem approach to determine risk and prevent water-borne diseases. (2003 Oct 01 – 2008 Sep 30) PIs: Ed Laws, Ric Yanagihara, R. Fujioka, T. Hemscheidt, R. Bidigare