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Hewson, Ian
Cornell Faculty Member
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Positions
- Assistant Professor, Microbiology (BIOMI), College of Agriculture and Life Sciences (CALS)
- Dir Assistant Acad, Shoals Marine Laboratory (SML), College of Agriculture and Life Sciences (CALS)
Ian Hewson is a Biological Oceanographer working on the impacts of viruses on aquatic biogeochemistry. He obtained his B.Sc (Hons) in Botany from the University of Queensland in 1997, then his PhD in Marine Environmental Biology from the University of Southern California in 2005. He was a postdoctoral associate in the Department of Ocean Sciences at the University of California, Santa Cruz from 2005 - 2008 before coming to Cornell. Dr Hewson is the Director for Undergraduate Studies and Program Coordinator for Marine Biology at Cornell.
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Affiliations
member of
- David R. Atkinson Center for a Sustainable Future (ACSF) Faculty Fellow
Research
research overview
- Marine Microbiology, Marine Ecology, Biological Oceanography, and Marine Science
principal investigator on
- COLLABORATIVE RESEARCH: ETBC: LIFE IN THE DEAD ZONE: MICROBIAL RESPIRATION, PRODUCTION, DIVERSITY AND GENE EXPRESSION IN SEASONALLY ANOXIC ESTUARINE WATERS awarded by NATL SCIENCE FOUNDATION 2010 - 2013
- EAGER: EXPLORATION OF THE PRESENCE AND ECOLOGICAL SIGNIFICANCE OF VIRAL PATHOGENS IN THE DYNAMICS OF DAPHNIA, A MAJOR PELAGIC GRAZER awarded by DIRECTORATE FOR BIOLOGICAL SCIENCES NSF 2010 - 2013
keywords
- Marine, Oceanography, Biology, Ecology
Publications
individual publications
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academic article
- Characterization of Trichodesmium-associated viral communities in the eastern Gulf of Mexico. FEMS Microbiology Ecology. 2013
- Discovery of viruses in marine copepods. Proceedings of the National Academy of Sciences of the United States of America. 110:1375-1380. 2013
- Analogous nutrient limitations in unicellular diazotrophs and Prochlorococcus in the South Pacific Ocean. International Society for Microbial Ecology Journal. 6:733-744. 2012
- Aquatic bacterial assemblage variability in the supra littoral zone of Appledore Island, Gulf of Maine. FEMS Microbiology Ecology. 80:501-508. 2012
- Characterization of thrombolitic bioherm cyanobacterial communities in a meromictic marl lake (Fayetteville Green Lake). Geomicrobiology Journal. 29:727-732. 2012
- Description of viral assemblages associated with the Gorgonia ventalina holobiont. Coral Reefs. 31. 2012
- Influence of habitat confluence on aquatic microbial assemblages in experimental mesocosms. Aquatic Microbial Ecology. 66:33-40. 2012
- Temporal dynamics and decay of putatively allochthonous and autochthonous viral genotypes in contrasting freshwater lakes . Applied and Environmental Microbiology. 78:6582-6591. 2012
- Marine bacteria, archaea and protistan association networks reveal ecological linkages. International Society for Microbial Ecology Journal. 5. 2011
- Misannotations of rRNA can now generate 90% false positive protein matches in metatranscriptomic studies. Nucleic Acids Research. 39:8792-8802. 2011
- Nucleopolyhedrovirus detection and distribution in terrestrial, freshwater, and marine habitats of Appledore Island. Microbial Ecology. 62:48-57. 2011
- Abundance and distribution of major groups of diazotrophic cyanobacteria and their potential contribution to N₂ fixation in the tropical Atlantic Ocean.. Environmental Microbiology. 12:3272-3289. 2010
- Coral-associated bacterial assemblages: Current knowledge and the potential for climate-driven impacts. Integrative and Comparative Biology. 50:662-674. 2010
- Ecophysiology of a common unannotated gene transcript in surface water microbial assemblages of the oligotrophic open ocean . Aquatic Microbial Ecology. 60. 2010
- Spatial patterns and light-driven variation of microbial population gene expression in surface waters of the oligotrophic open ocean. Environmental Microbiology. 12:1940-1956. 2010
- The ecological role of aquatic viruses. Encyclopedia of Life Sciences. . 2010
- Unicellular cyanobacterial distributions broaden the oceanic N2 fixation domain. Science. 327:1512-1514. 2010
- Comparative day/night metatranscriptomic analysis of microbial communities in the North Pacific subtropical gyre . Environmental Microbiology. 11:1358-1375. 2009
- In situ transcriptomic analysis of the globally important keystone N2-fixing taxon Crocosphaera watsonii. The ISME Journal. 3:618-631. 2009
- Metagenomic potential of microbial assemblages in the surface waters of the central Pacific Ocean tracks variability in oceanic habitat . Limnology and Oceanography. 54:1981-1994. 2009
- Microbial community gene expression within colonies of the diazotroph, Trichodesmium, from the Southwest Pacific Ocean. The ISME Journal. 3:1286-1300. 2009
- A latitudinal diversity gradient in planktonic marine bacteria. Proceedings at the National Academy of Science USA. 105:7774-7778. 2008
- Globally distributed uncultivated oceanic N2-Fixing cyanobacteria lack oxygenic photosystem II. Science. 322:1110-1112. 2008
- Molecular biology techniques and applications for ocean sensing. Ocean Sciences. 5:101-113. 2008
- Characteristics of diazotrophs in surface to abyssopelagic waters of the Sargasso Sea. Aquatic Microbial Ecology. 46:15-30. 2007
- Characterization of lysogens in bacterioplankton assemblages of the Southern California Borderland. Microbial Ecology. 53:631-638. 2007
- Covariation between viral parameters with bacterial assemblage richness and diversity in the water column and sediments. Deep Sea Research. 54:811-830. 2007
- Diazotrophic bacterioplankton in a coral reef lagoon: Phylogeny, diel nitrogenase expression, and response to phosphate enrichment. The ISME Journal. 1:78-91. 2007
- Experiments linking nitrogenase gene expression to N2 fixation in the North Pacific subtropical gyre. Limnology and Oceanography. 52:169-183. 2007
- Sediment bacterial assemblage diversity and enzyme activity across the San Pedro Basin, Southern California Borderlands. Environmental Microbiology. 9:923-933. 2007
- Virus and prokaryote enumeration from planktonic marine environments by epifluorescence microscopy with SYBR Green I. Nature Protocols. 2:269-276. 2007
- Annually reoccurring bacterial communities are predictable from ocean conditions. Proceedings at the National Academy of Science USA. 103:13104-13109. 2006
- Improved strategy for comparing microbial assemblage fingerprints. Microbial Ecology. 51:147-153. 2006
- Influence of Amazon and Orinoco offshore surface water plumes on oligotrophic bacterioplankton diversity in the West Tropical Atlantic. Aquatic Microbial Ecology. 43:11-22. 2006
- Remarkable heterogeneity in meso- and bathypelagic bacterioplankton assemblage structure. Limnology and Oceanography. 51:1274-1283. 2006
- Spatial and vertical biogeography of sediment bacteria on a coral reef flat. Marine Ecology Progress Series. 306:79-86. 2006
- Temporal and spatial scales of oligotrophic surface water bacterioplankton assemblage variation. Marine Ecology Progress Series. 311:67-77. 2006
- Viral and bacterial assemblage covariance in oligotrophic waters of the West Florida Shelf (Gulf of Mexico). Journal of the Marine Biological Association of the UK. 86:577-589. 2006
- Viral impacts upon marine bacterioplankton assemblage structure. Journal of the Marine Biological Association of the UK. 86:577-589. 2006
- Evidence of Trichodesmium viral lysis and potential significance for biogeochemical cycling in the oligotrophic ocean. Aquatic Microbial Ecology. 36:1-8. 2004
- Richness and diversity of bacterioplankton species along an estuarine gradient in Moreton Bay, Australia. Applied and Environmental Microbiology. 70:3425-3433. 2004
- Viral effects on bacterial community composition in seawater microcosms. Aquatic Microbial Ecology. 34:117-127. 2004
- Bacterial diversity in shallow oligotrophic marine benthos and overlying waters: effects of viral infection, containment and nutrient enrichment. Microbial Ecology. 46:322-336. 2003
- Metagenomic analyses of an uncultured viral community from human feces. Journal of Bacteriology. 185:6220-6223. 2003
- Viriobenthos production and virioplankton sorptive scavenging by suspended particles in coastal and pelagic waters. Microbial Ecology. 46:337-347. 2003
- A low-latitude bloom of the surf-zone diatom, Anaulus australis (Centrales; Bacillariophyta) on the coast of Southern Queensland (Australia). Journal of Plankton Research. 23:1233-1236. 2001
- Dynamics of benthic and pelagic marine viruses along eutrophication gradients in two subtropical estuaries. Limnology and Oceanography. 46:1734-1746. 2001
- Effects of elevated virus abundance on benthic microbial communities in subtropical sediments. Aquatic Microbial Ecology. 25:1-10. 2001
- Virus-like particles associated with Lyngbya mjauscula (Cyanophyta; Oscillatoriaceae) bloom decline in Moreton Bay, Australia. Aquatic Microbial Ecology. 25:207-213. 2001
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booksection
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chapter
- The ecological role of viruses in aquatic ecosystems. Encyclopedia of Life Sciences. 2010
- Viral and bacterial community shifts at an ocean time series station 2002
presentations
Teaching
teaching overview
- Marine microbiology, microbial oceanography, marine biology, marine ecology, environmental virology
teaching activities
- BIOEE-6601: Tropical Field Ecology - Spring 2013
- BIOMI-3500: Biological Oceanography and Ocean Biogeochemistry - Spring 2013
- BIOMI-4980: Teaching Experience - Spring 2013
- BIOMI-6906: Prokaryotic Biology: Viral Diversity and Ecology - Spring 2013
- BIOMI-6992: Current Research in Marine Biology and Biological Oceanography - Spring 2013
- EAS-3555: Biological Oceanography and Ocean Biogeochemistry - Spring 2013
- BIOMI-6992: Current Research in Marine Biology and Biological Oceanography - Fall 2012
- BIOMI-3500: Marine Biology - Spring 2012
- BIOMI-4980: Teaching Experience - Spring 2012
- BIOMI-6906: Prokaryotic Biology: Viral Diversity and Ecology - Spring 2012
- EAS-3555: Marine Biology - Spring 2012
Service
service to the profession
reviewer or editor for
Background
education and training
- University of California Santa Cruz 2008
- Ph.D. in Biological Oceanography, University of Southern California 2005
- University of Queensland 2000
awards and honors
Other
college
- CALS
research keyword
- Marine, Oceanography, Biology, Ecology
name prefix
- Dr.