2026 Stephen J. Giovannoni: Microbiology Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Microbiology	98	449	402	208	175	257	43533

Research.com Recognitions

2011 - Dupont Industrial Biosciences Award in Applied and Environmental Microbiology, American Society for Microbiology

Overview

Stephen J. Giovannoni is affiliated with Oregon State University in the United States. Their research spans several fields, primarily focusing on Environmental Science, Biochemistry, Genetics and Molecular Biology, and Earth and Planetary Sciences. Within these broader domains, their work touches on key subfields such as Ecology, Molecular Biology, and Oceanography.

The central topics of Giovannoni's research include Microbial Community Ecology and Physiology, Marine and Coastal Ecosystems, Protist Diversity and Phylogeny, Genomics and Phylogenetic Studies, Marine Biology and Ecology Research, Ocean Acidification Effects and Responses, and Atmospheric Chemistry and Aerosols.

Frequent collaboration with several researchers has been a part of their scientific outputs. Regular coauthors include Luis M. Bolaños, Craig A. Carlson, Alexandra Z. Worden, Rachel Parsons, and Stephen E. Noell.

Giovannoni has published extensively across select scientific venues, with numerous articles appearing in:

bioRxiv (Cold Spring Harbor Laboratory)
Frontiers in Microbiology
Frontiers in Marine Science
mBio
ISME Communications

Some of the recent prominent papers authored or coauthored by Giovannoni are:

"Small phytoplankton dominate western North Atlantic biomass" (2020), The ISME Journal
"Pangenomics Analysis Reveals Diversification of Enzyme Families and Niche Specialization in Globally Abundant SAR202 Bacteria" (2020), mBio
"Different carboxyl-rich alicyclic molecules proxy compounds select distinct bacterioplankton for oxidation of dissolved organic matter in the mesopelagic Sargasso Sea" (2020), Limnology and Oceanography
"Seasonality of the Microbial Community Composition in the North Atlantic" (2021), Frontiers in Marine Science
"Seasonal and Geographical Transitions in Eukaryotic Phytoplankton Community Structure in the Atlantic and Pacific Oceans" (2020), Frontiers in Microbiology

Their contributions to applied and environmental microbiology were recognized by the Dupont Industrial Biosciences Award in Applied and Environmental Microbiology, awarded by the American Society for Microbiology in 2011.

Best Publications

The Uncultured Microbial Majority

Michael S. Rappé;Stephen J. Giovannoni

2641
Citations
Bias caused by template annealing in the amplification of mixtures of 16S rRNA genes by PCR.

M T Suzuki;S J Giovannoni

2359
Citations
Genetic diversity in Sargasso Sea bacterioplankton.

Stephen J. Giovannoni;Theresa B. Britschgi;Craig L. Moyer;Katharine G. Field

2166
Citations
Microbial ecology and evolution: a ribosomal RNA approach.

G J Olsen;D J Lane;S J Giovannoni;N R Pace

1488
Citations
Genome Streamlining in a Cosmopolitan Oceanic Bacterium

Stephen J. Giovannoni;H. James Tripp;Scott Givan;Mircea Podar

1341
Citations
SAR11 clade dominates ocean surface bacterioplankton communities

Robert M. Morris;Michael S. Rappé;Stephanie A. Connon;Kevin L. Vergin

1307
Citations
Geobacter metallireducens gen. nov. sp. nov., a microorganism capable of coupling the complete oxidation of organic compounds to the reduction of iron and other metals.

D. R. Lovley;S. J. Giovannoni;D. C. White;J. E. Champine

1216
Citations
Cultivation of the ubiquitous SAR11 marine bacterioplankton clade

Michael S. Rappé;Stephanie A. Connon;Kevin L. Vergin;Stephen J. Giovannoni

1183
Citations
High-Throughput Methods for Culturing Microorganisms in Very-Low-Nutrient Media Yield Diverse New Marine Isolates

Stephanie A. Connon;Stephen J. Giovannoni

961
Citations
Phylogenetic group-specific oligodeoxynucleotide probes for identification of single microbial cells.

S. J. Giovannoni;E. F. DeLong;Gary J Olsen;N. R. Pace

940
Citations
Rethinking the marine carbon cycle: Factoring in the multifarious lifestyles of microbes

Alexandra Z. Worden;Alexandra Z. Worden;Alexandra Z. Worden;Michael J. Follows;Stephen J. Giovannoni;Susanne Wilken

932
Citations
Molecular phylogeny of the animal kingdom

Katharine G. Field;Gary J. Olsen;David J. Lane;Stephen J. Giovannoni

931
Citations
Implications of streamlining theory for microbial ecology

Stephen J Giovannoni;J Cameron Thrash;J Cameron Thrash;Ben Temperton;Ben Temperton

859
Citations
Evolutionary relationships among cyanobacteria and green chloroplasts.

S. J. Giovannoni;S. Turner;Gary J Olsen;S. Barns

664
Citations
Evolution, diversity, and molecular ecology of marine prokaryotes

S. Giovannoni;Rappé

614
Citations
Molecular diversity and ecology of microbial plankton

Stephen J. Giovannoni;Ulrich Stingl

565
Citations
SAR11 Bacteria: The Most Abundant Plankton in the Oceans.

Stephen J. Giovannoni

504
Citations
Genetic comparisons reveal the same unknown bacterial lineages in Atlantic and Pacific bacterioplankton communities

Thomas D. Mullins;Theresa B. Britschgi;Robin L. Krest;Stephen J. Giovannoni

490
Citations
Perennial Antarctic lake ice : An oasis for life in a polar desert

John C. Priscu;Christian H. Fritsen;Edward E. Adams;Stephen J. Giovannoni

476
Citations
Cultivation and Growth Characteristics of a Diverse Group of Oligotrophic Marine Gammaproteobacteria

Jang Cheon Cho;Stephen J. Giovannoni

449
Citations
Kinetic Bias in Estimates of Coastal Picoplankton Community Structure Obtained by Measurements of Small-Subunit rRNA Gene PCR Amplicon Length Heterogeneity

Marcelino Suzuki;Michael S. Rappé;Stephen J. Giovannoni

449
Citations

Frequent Co-Authors

Craig A. Carlson University of California, Santa Barbara

Alexandra Z. Worden Marine Biological Laboratory

Martin R. Fisk Oregon State University

Norman R. Pace University of Colorado Boulder

Gary J. Olsen University of Illinois at Urbana-Champaign

William E. Sandine Oregon State University

Ramunas Stepanauskas Bigelow Laboratory For Ocean Sciences

Richard W. Castenholz University of Oregon

Michael J. Behrenfeld Oregon State University

Mary S. Lipton Pacific Northwest National Laboratory

External Links

Personal website of Stephen J. Giovannoni

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