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Christopher A. Francis

Christopher A. Francis

Stanford University
United States

D-Index & Metrics

Biology and Biochemistry

D-Index
52
Citations
14478
World Ranking
16487
National Ranking
6826

Christopher A. Francis publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Christopher A. Francis sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 108 publications — 8th percentile

8% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Christopher A. Francis D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Christopher A. Francis sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 52 D-Index — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Research.com Recognitions

  • 2006 - Hellman Fellow

Overview

Christopher A. Francis is affiliated with Stanford University in the United States and has a research focus encompassing Earth and Planetary Sciences as well as Physics and Astronomy. Their work spans several subfields including Geophysics, Astronomy and Astrophysics, Molecular Biology, Ecology, and Environmental Chemistry.

The main topics addressed in their research include:

  • Seismic Waves and Analysis
  • Ionosphere and magnetosphere dynamics
  • Earthquake Detection and Analysis
  • Microbial Community Ecology and Physiology
  • Genomics and Phylogenetic Studies
  • Enzyme Structure and Function
  • Methane Hydrates and Related Phenomena

Christopher A. Francis has contributed to numerous publications, with notable recent papers including:

  • "Unraveling the functional dark matter through global metagenomics", 2023, published in Nature
  • "Thousands of small, novel genes predicted in global phage genomes", 2022, published in Cell Reports
  • "Diverse ecophysiological adaptations of subsurface Thaumarchaeota in floodplain sediments revealed through genome-resolved metagenomics", 2021, published in The ISME Journal
  • "The Beach Aquifer Microbiome: Research Gaps and Data Needs", 2021, published in Frontiers in Environmental Science
  • "Metagenome-assembled genomes reveal unique metabolic adaptations of a basal marine Thaumarchaeota lineage", 2020, published in The ISME Journal

The frequent publication venues where Christopher A. Francis's work appears include:

  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
  • bioRxiv (Cold Spring Harbor Laboratory)
  • The ISME Journal
  • Zenodo (CERN European Organization for Nuclear Research)
  • mSystems

Collaborations have been extensive, with frequent co-authors such as Vanessa Bailey, Scott Fendorf, Marco Keiluweit, Anne Dekas, and Christian Dewey.

In recognition of their contributions, Christopher A. Francis received the Hellman Fellow award in 2006.

Best Publications

  • Ubiquity and diversity of ammonia-oxidizing archaea in water columns and sediments of the ocean

    Christopher A. Francis;Kathryn J. Roberts;J. Michael Beman;Alyson E. Santoro

  • New processes and players in the nitrogen cycle: the microbial ecology of anaerobic and archaeal ammonia oxidation.

    Christopher A Francis;J Michael Beman;Marcel M M Kuypers

  • Changes in Bacterial and Archaeal Community Structure and Functional Diversity along a Geochemically Variable Soil Profile

    Colleen M. Hansel;Scott Fendorf;Phillip M. Jardine;Christopher A. Francis

  • Combined niche and neutral effects in a microbial wastewater treatment community

    Irina Dana Ofiteru;Mary Lunn;Thomas P Curtis;George F Wells

  • Molecular and biogeochemical evidence for ammonia oxidation by marine Crenarchaeota in the Gulf of California

    J Michael Beman;J Michael Beman;Brian N Popp;Christopher A Francis

  • Occurrence of ammonia-oxidizing archaea in wastewater treatment plant bioreactors.

    Hee-Deung Park;George F. Wells;Hyokwan Bae;Craig S. Criddle

  • Activity, abundance and diversity of nitrifying archaea and bacteria in the central California Current

    Alyson E. Santoro;Alyson E. Santoro;Karen L. Casciotti;Christopher A. Francis

  • Shifts in the relative abundance of ammonia‐oxidizing bacteria and archaea across physicochemical gradients in a subterranean estuary

    Alyson E. Santoro;Christopher A. Francis;Nicholas R. De Sieyes;Alexandria B. Boehm

  • Relative abundance and diversity of ammonia‐oxidizing archaea and bacteria in the San Francisco Bay estuary

    Annika C. Mosier;Christopher A. Francis

  • Genome of a Low-Salinity Ammonia-Oxidizing Archaeon Determined by Single-Cell and Metagenomic Analysis

    Paul C. Blainey;Annika C. Mosier;Anastasia Potanina;Christopher A. Francis

  • Oligonucleotide microarray for the study of functional gene diversity in the nitrogen cycle in the environment.

    Gaspar Taroncher-Oldenburg;Erin M. Griner;Chris A. Francis;Bess B. Ward

  • Ammonia‐oxidizing communities in a highly aerated full‐scale activated sludge bioreactor: betaproteobacterial dynamics and low relative abundance of Crenarchaea

    George F. Wells;Hee Deung Park;Chok Hang Yeung;Brad Eggleston

  • Diversity of Ammonia-Oxidizing Archaea and Bacteria in the Sediments of a Hypernutrified Subtropical Estuary: Bahía del Tóbari, Mexico

    J. Michael Beman;Christopher A. Francis

  • Enzymatic Manganese(II) Oxidation by Metabolically Dormant Spores of Diverse Bacillus Species

    Chris A. Francis;Bradley M. Tebo

  • Dissimilatory Metal Reduction by the Facultative Anaerobe Pantoea agglomerans SP1

    Chris A. Francis;Anna Y. Obraztsova;Bradley M. Tebo

  • Denitrifier Community Composition along a Nitrate and Salinity Gradient in a Coastal Aquifer

    Alyson E. Santoro;Alexandria B. Boehm;Christopher A. Francis

  • Core and Intact Polar Glycerol Dibiphytanyl Glycerol Tetraether Lipids of Ammonia-Oxidizing Archaea Enriched from Marine and Estuarine Sediments

    Angela Pitcher;Ellen C. Hopmans;Annika C. Mosier;Soo-Je Park

  • Enzymatic Manganese(II) Oxidation by a Marine α-Proteobacterium

    Chris A. Francis;Edgie Mark Co;Bradley M. Tebo

  • Diversity of ammonia monooxygenase ( amoA ) genes across environmental gradients in Chesapeake Bay sediments

    Chris A. Francis;Gregory D. O'Mullan;Bess B. Ward

  • Fine-scale bacterial community dynamics and the taxa–time relationship within a full-scale activated sludge bioreactor

    George F. Wells;Hee Deung Park;Brad Eggleston;Christopher A. Francis

Frequent Co-Authors

John R. Bargar
John R. Bargar SLAC National Accelerator Laboratory
Craig S. Criddle
Craig S. Criddle Stanford University
Francisco P. Chavez
Francisco P. Chavez Monterey Bay Aquarium Research Institute
Karen L. Casciotti
Karen L. Casciotti Stanford University
Bradley M. Tebo
Bradley M. Tebo Oregon Health & Science University
Bess B. Ward
Bess B. Ward Princeton University
Scott Fendorf
Scott Fendorf Stanford University
Scott D. Wankel
Scott D. Wankel Woods Hole Oceanographic Institution
Soichi Wakatsuki
Soichi Wakatsuki Stanford University
Terry C. Hazen
Terry C. Hazen University of Tennessee at Knoxville

External Links

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Best Scientists Citing Christopher A. Francis

Jizhong Zhou

Jizhong Zhou

University of Oklahoma

Publications: 118

Ji-Zheng He

Ji-Zheng He

University of Melbourne

Publications: 72

Jaap S. Sinninghe Damsté

Jaap S. Sinninghe Damsté

Royal Netherlands Institute for Sea Research

Publications: 64

Ji-Dong Gu

Ji-Dong Gu

Technion – Israel Institute of Technology

Publications: 58

Chuanlun L. Zhang

Chuanlun L. Zhang

Southern University of Science and Technology

Publications: 57

Bradley M. Tebo

Bradley M. Tebo

Oregon Health & Science University

Publications: 55

Bess B. Ward

Bess B. Ward

Princeton University

Publications: 51

Stefan Schouten

Stefan Schouten

Utrecht University

Publications: 50

Christa Schleper

Christa Schleper

University of Vienna

Publications: 47

Michael Wagner

Michael Wagner

University of Vienna

Publications: 44

David A. Stahl

David A. Stahl

University of Washington

Publications: 43

Mike S. M. Jetten

Mike S. M. Jetten

Radboud University

Publications: 43

Gerhard J. Herndl

Gerhard J. Herndl

University of Vienna

Publications: 41

Zhili He

Zhili He

Sun Yat-sen University

Publications: 41

Zhongjun Jia

Zhongjun Jia

Chinese Academy of Sciences

Publications: 33

James I. Prosser

James I. Prosser

University of Aberdeen

Publications: 30

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