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Stephen J. Giovannoni

Stephen J. Giovannoni

D-Index & Metrics

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

Stephen J. Giovannoni publications per year

The chart shows the history of publications by Stephen J. Giovannoni between 1980 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Stephen J. Giovannoni published across 46 years, from 1980 to 2025, averaging 6.4 papers a year. Output peaked at 21 publications in 2010. 24 of the 294 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1980 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2010. 1980: 1 publication 1981: 1 publication 1982: 0 publications 1983: 0 publications 1984: 1 publication 1985: 1 publication 1986: 1 publication 1987: 3 publications 1988: 8 publications 1989: 5 publications 1990: 2 publications 1991: 4 publications 1992: 5 publications 1993: 5 publications 1994: 0 publications 1995: 6 publications 1996: 6 publications 1997: 6 publications 1998: 6 publications 1999: 9 publications 2000: 5 publications 2001: 2 publications 2002: 5 publications 2003: 5 publications 2004: 10 publications 2005: 7 publications 2006: 3 publications 2007: 16 publications 2008: 5 publications 2009: 9 publications 2010: 21 publications 2011: 13 publications 2012: 9 publications 2013: 10 publications 2014: 9 publications 2015: 5 publications 2016: 3 publications 2017: 13 publications 2018: 2 publications 2019: 12 publications 2020: 10 publications 2021: 8 publications 2022: 7 publications 2023: 11 publications 2024: 11 publications 2025: 13 publications
1980 2025

294 publications in total across all disciplines

View publications per year as a table
Stephen J. Giovannoni: publications per year, 1980 to 2025
Year Publications
1980 1
1981 1
1982 0
1983 0
1984 1
1985 1
1986 1
1987 3
1988 8
1989 5
1990 2
1991 4
1992 5
1993 5
1994 0
1995 6
1996 6
1997 6
1998 6
1999 9
2000 5
2001 2
2002 5
2003 5
2004 10
2005 7
2006 3
2007 16
2008 5
2009 9
2010 21
2011 13
2012 9
2013 10
2014 9
2015 5
2016 3
2017 13
2018 2
2019 12
2020 10
2021 8
2022 7
2023 11
2024 11
2025 13
Total 294
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Stephen J. Giovannoni publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Stephen J. Giovannoni sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 255–264 publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 257 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146 257
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
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Stephen J. Giovannoni D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Stephen J. Giovannoni sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 98 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 98 D-Index — 92nd percentile

92% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21 98
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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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

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

    M T Suzuki;S J Giovannoni

  • Genetic diversity in Sargasso Sea bacterioplankton.

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

  • Microbial ecology and evolution: a ribosomal RNA approach.

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

  • Genome Streamlining in a Cosmopolitan Oceanic Bacterium

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

  • SAR11 clade dominates ocean surface bacterioplankton communities

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

  • 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

  • Cultivation of the ubiquitous SAR11 marine bacterioplankton clade

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

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

    Stephanie A. Connon;Stephen J. Giovannoni

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

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

  • 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

  • Molecular phylogeny of the animal kingdom

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

  • Implications of streamlining theory for microbial ecology

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

  • Evolutionary relationships among cyanobacteria and green chloroplasts.

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

  • Evolution, diversity, and molecular ecology of marine prokaryotes

    S. Giovannoni;Rappé

  • Molecular diversity and ecology of microbial plankton

    Stephen J. Giovannoni;Ulrich Stingl

  • SAR11 Bacteria: The Most Abundant Plankton in the Oceans.

    Stephen J. Giovannoni

  • 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

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

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

  • Cultivation and Growth Characteristics of a Diverse Group of Oligotrophic Marine Gammaproteobacteria

    Jang Cheon Cho;Stephen J. Giovannoni

  • 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

Frequent Co-Authors

Craig A. Carlson
Craig A. Carlson University of California, Santa Barbara
Alexandra Z. Worden
Alexandra Z. Worden Marine Biological Laboratory
Martin R. Fisk
Martin R. Fisk Oregon State University
Norman R. Pace
Norman R. Pace University of Colorado Boulder
Gary J. Olsen
Gary J. Olsen University of Illinois at Urbana-Champaign
William E. Sandine
William E. Sandine Oregon State University
Ramunas Stepanauskas
Ramunas Stepanauskas Bigelow Laboratory For Ocean Sciences
Richard W. Castenholz
Richard W. Castenholz University of Oregon
Michael J. Behrenfeld
Michael J. Behrenfeld Oregon State University
Mary S. Lipton
Mary S. Lipton Pacific Northwest National Laboratory

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