Lawrence Livermore National Laboratory

Jennifer Pett-Ridge

Group Leader, Environmental Isotope Systems
Science Lead, DOE Genomic Sciences Soil Microbiome SFA

Nuclear and Chemical Sciences Division

 +1 925-424-2882

PhD Soil Microbial Ecology
University of California at Berkeley
MS Forest Science
Yale School of Forestry & Environmental Studies
BA Biology
Studies in Environment
Yale University

Research Interests

Jennifer Pett-Ridge is a senior staff scientist and group leader at LLNL who uses the tools of systems biology and biogeochemistry to link, identity, and function in environmental microbial communities. Recently awarded a DOE Early Career award to work on responses of tropical soil microbes to climate change, she has also pioneered the use of NanoSIMS isotopic imaging in the fields of microbial biology and soil biogeochemistry. As lead scientist of LLNL’s Genomic Science Biofuels Scientific Focus Area (SFA) from 2009–2018, and more recently LLNL’s Soil Microbiome SFA, she helps to coordinate multi-disciplinary teams that integrate biogeochemistry, stable isotope probing, NanoSIMS imaging, molecular microbial ecology, and computational modeling to understand biotic interactions and energy flow in microbial communities critical to soil nutrient cycling and sustainable biofuel production. She is the group lead for the newly-formed Environmental Isotope Systems group in the Nuclear and Chemical Sciences division; she manages a portfolio of over $7 million in DOE, NSF, NASA and other funding; and she helps to mentor a group of staff scientists, postdocs, and graduate students working on terrestrial and marine carbon cycling, plant-soil interactions, and development of new isotope tracing methods (El-FISH, Chip-SIP, STXM-SIMS). She collaborates frequently with scientists at academic institutions and other national labs and has published over 60 peer-review articles, including a patent ROI for the “ChipSIP” approach linking microbial identity and function using NanoSIMS analysis of microarrays.


2018–present Adjunct Full Professor, Crop and Soil Science, UC Merced, School of Natural Sciences
2018–present Associate Editor, Soil Systems
2018–present Subject Editor, Soil Biology & Biochemistry
2017–present Carbon Uptake Pillar Lead, LLNL ‘Carbon Initiative’
2017–present Group Leader, Environmental Isotope Systems Group
2017–present Science Lead, DOE Genomic Sciences Soil Microbiome SFA
2016–present Guest appointment, UC Berkeley, Environmental Science Policy and Management Dept.
2015–present Senior staff scientist, LLNL
2015–present Editorial Board, BMC Microbiology
2015–present Editorial Board, Environmental Microbiology
2014–present ISME Ambassador
2013–2017 EMSL User Executive Committee
2012–2018 Adjunct Faculty, Crop and Soil Science, Oregon State University
2012–present Editorial Board, Applied and Environmental Microbiology
2011–present Associate Editor, Frontiers in Microbiological Chemistry
2011–present Guest Scientist, Lawrence Berkeley National Lab
2010–2017 Deputy Group Leader, Isotopic Signatures Group, Livermore, CA
2010–present Review Editor for Frontiers in Terrestrial Microbiology
2009–2018 Science Lead, DOE Genomic Sciences Biofuels SFA
2009–present Career Staff Scientist, Lawrence Livermore National Laboratory
2008–2009 Flex-term Staff Scientist, Lawrence Livermore National Lab
2007 Stanford University, Hopkins Microbiology Course
2006–2009 Vice Chair, Soil Ecology Section, Ecological Society of America
2005–2008 Postdoctoral Fellow, Lawrence Livermore National Lab
2000–2004 Graduate Fellow, DOE Global Change Education Program, UC Berkeley
2000 University of Utah, Salt Lake City, UT, Stable Isotope Ecology summer course


2017 Editor’s Citation for Excellence in Refereeing, Geophysical Research Letters
2015 LLNL Early and Mid-Career Recognition (EMCR) award
2014 DOE Early Career Research Program Fellowship
2014 Elected to EMSL User Executive Committee
2012 Directorate Award, Physical and Life Sciences Directorate, LLNL
2013 AGU, Best Talk, Biogeosciences Section
2011 Publication Award, Chemical Sciences Division, LLNL
2009 International Society for Microbial Ecology, Journal Cover Contest
2007 AEM Gordon Research Conference, Best Poster
2006 Institute for Complex Adaptive Matter award
2000–2004 Graduate Fellowship, DOE Global Change Education Program, UC Berkeley
2000, 2004 James P. Bennett Agriculture Fund Fellowship, U.C. Berkeley
2000, 2001,
2002, 2003,
U.C. Berkeley Graduate Division awards
2003 Honorable mention for oral presentation, Soil Ecology Society
2003 Student conference award, British Ecological Society
2000 Carolyn Meek Memorial Scholarship, U.C. Berkeley
1996 McLean Scholarship, Yale School of Forestry
1995 Mellon Research Grant, Yale School of Forestry
1995 Tropical Resource Institute Research Grant, Yale School of Forestry
1994 Mellon Senior Research Grant, Yale College


Shi, S., D.J. Herman, Z. He, J. Pett-Ridge, L. Wu, J. Zhou and M.K. Firestone. Plant roots alter microbial functional genes supporting litter decomposition. ISME Journal (Nature) (in review)

Gross, A., J. Pett-Ridge and W. L.Silver. Competition between microbes and minerals drives phosphorus dynamics in humid tropical forests soils, Soil Biology and Biochemistry (in review).

Lin, L., A. Bhattacharyya, A. N. Campbell, P. S. Nico, J. Pett-Ridge*, and W. L. Silver*. Phosphorus fractionation responds to dynamic redox conditions in a humid rainforest soil. JGR-Biogeosciences (in review) *co-corresponding authors.

Navid, A., Jiao, Y., Wong, S.E. and J. Pett-Ridge. System-level analysis of metabolic trade-offs during anaerobic phototrophic growth in Rhodopseudomonas palustris. Scientific Reports (in review).

Everroad, R.C., A. McHugh, A.M. Detweiler, T. Glover, P.K. Weber, J. Pett-Ridge, L. Prufert-Bebout, B.M. Bebout. Fine-scale niche partitioning and cooperation in co-existing cyanobacteria promote systems-level fitness across environmental conditions. Environmental Microbiology (in review).

Samo T.J., J.A. Kimbrel, D.J. Nilson, J. Pett-Ridge, P.K. Weber, X. Mayali. Attachment between heterotrophic bacteria and microalgae influences mutualistic microscale interactions. Environmental Microbiology (accepted, pending final revisions).

Bhattacharyya, A., A N Campbell, M M Tfaily, YLin, W L Silver, P S Nico, J. Pett-Ridge. 2018. Redox fluctuations control the coupled cycling of iron and carbon in tropical forest soils. bioRxiv  doi: AND Environmental Science and Technology (in review).

Whitman, T., R. Neurath, A. Perera, D. Ning, J. Zhou, P. Nico, J. Pett-Ridge, M. Firestone. 2017. Microbial community assembly differs by mineral type in the rhizosphere. bioRxiv 128850; doi: AND Environmental Microbiology (in review).

Pett-Ridge, J. 2018. Mary K. Firestone: Groundbreaking Journey of a Microbial Matriarch. Women in Microbiology Ed. Rachel J. Whitaker, Hazel A. Barton, ASM Press. doi:10.1128/9781555819545.ch31.

Ackerman, C.; P. Weber, T. Xiao, B. Thai, T. Kuo, E. Zhang, J. Pett-Ridge, C. Chang. 2018. Multimodal LA-ICP-MS and nanoSIMS imaging enables copper mapping within photoreceptor megamitochondria in a zebrafish model of Menkes disease. Metallomics 10: 474-485.

Koch, B.J., T.A. McHugh, M. Hayer, E. Schwartz, S.J. Blazewicz, P. Dijkstra, N. van Gestel, J.C. Marks, R.L. Mau, E.M. Morrissey, J. Pett-Ridge, B.A. Hungate.  2018. Estimating taxon-specific population dynamics in intact microbial communities. Ecosphere doi: 10.1002/ecs2.2090.

Souza, I. F., L.F.J. Almeida, G.L. Jesus, J. Pett-Ridge, P.S. Nico, M. Kleber, I.R. Silva. 2017. Carbon sink strength of subsurface horizons in Brazilian Oxisols. Soil Science Society of America Journal doi:10.2136/sssaj2017.05.0143.

D’haeseleer, P.*, J.Z. Lee*, , R.C. Everroad, L. Prufert-Bebout, L.C. Burow, A. Detweiler , P.K. Weber , U. Karaoz, E.L. Brodie, S. Tringe, T. Glavina del Rio, B. Bebout, J. Pett-Ridge. 2017. Metagenomic analysis of intertidal hypersaline microbial mats from Elkhorn Slough, California, grown with and without molybdate. Standards in Genomic Sciences doi: 10.1186/s40793-017-0279-6.

Lee, J.Z., R.C. Everroad, U. Karaoz, A.M. Detweiler, J. Pett-Ridge, P.K. Weber, L. Prufert-Bebout, B.M. Bebout. 2017. Metagenomics reveals niche partitioning within the phototroph-associated microbiome of a microbial mat. bioRxiv.

Bryson, S., Z. Li, F. Chavez, P. K. Weber, J. Pett-Ridge, R.L. Hettich, C. Pan, X. Mayali, R. S. Mueller. 2017. Phylogenetically conserved resource partitioning in the coastal microbial loop. ISME Journal, doi: 10.1038/ismej.2017.128.

Warren, M., X. Lin, J. Gaby, C. Kretz, P. Morton, J. Pett-Ridge, D. Weston, C. Schadt, J. Kostka, and J. Glass. 2017. Diazotrophy in a Sphagnum-dominated peat bog. Applied and Environmental Microbiology doi: 10.1128/AEM.01174-1.

Pett-Ridge, J. and M. K. Firestone. (2017) Using stable isotopes to explore root-microbe-mineral interactions in soil. Rhizosphere 3: 244-253.

Stuart, R. X. Mayali, M. P. Thelen, J. Pett-Ridge and P.K. Weber. 2017. Measuring cyanobacterial metabolism in biofilms with NanoSIMS isotope imaging and scanning electron microscopy (SEM). Bio-protocol 7:e2263. doi: 10.21769/BioProtoc.2263.

Musat, N., F. Musat, P.K. Weber, and J. Pett-Ridge (2016) Tracking microbial interactions with NanoSIMS. Current Opinion in Biotechnology, 41: 114-121.

Everroad, R.C., R. K Stuart, B.M Bebout, A. M Detweiler, J. Z Lee, D. Woebken, L. Prufert-Bebout, J. Pett-Ridge. (2016) Permanent draft genome of strain ESFC-1: Ecological genomics of a newly discovered lineage of filamentous diazotrophic cyanobacteria.  Standards in Genomic Sciences. 11: 53. doi: 10.1186/s40793-016-0174-6.

Stuart, R. K., X. Mayali, A. Boaro, M. Lipton, J. Z. Lee, R. C. Everroad, B. M. Bebout, P. K. Weber, J. Pett-Ridge, and M. P. Thelen.  (2016) Light regimes shape utilization of extracellular organic C and N in a cyanobacterial biofilm. mBio vol. 7: e00650-16. doi: 10.1128/mBio.00650-16.

Bryson, S., Z. Li, J. Pett-Ridge, R. Hettich, X. Mayali, C. Pan, and R.Mueller.  (2016) Proteomic-based stable isotope probing reveals taxonomically distinct patterns in amino acid assimilation by coastal marine bacterioplankton. mSystems, 1: e00027-15  doi: 10.1128/mSystems.00027-15.

Nuccio, E.E., J. Anderson-Furgeson, K. Y. Estera, J. Pett-Ridge, P. de Valpine, E. L. Brodie, M. K. Firestone. (2016) Climate and edaphic controllers influence rhizosphere community assembly for a wild annual grass. Ecology, 97: 1307-1318.

Moyes, A.B., L. M. Kueppers, J. Pett-Ridge, D. Carper, N. Vandehey, J. O'Neil, A. C. Frank. (2016). Evidence for foliar endophytic nitrogen-fixation in a widely distributed subalpine conifer. New Phytologist, 210:657-668.

Eloe-Fadrosh, E. A., D. Paez-Espino, J. Jarett, P. F. Dunfield, B. P. Hedlund, A. E. Dekas, S. E. Grasby, A. L. Brady, H. Dong, B. R. Briggs, W.Li, D. Goudeau, R. Malmstrom, A. Pati, J. Pett-Ridge, E. M. Rubin, T. Woyke, N. C. Kyrpides, N. N. Ivanova.  (2016). Global metagenomic survey reveals taxonomic "blind spots" in geothermal springs. Nature Communications, 7: 10476.

Stuart, R.K., X. Mayali, J.Z. Lee, R.C. Everroad, M. Hwang, B. Bebout, P.K. Weber, J. Pett-Ridge, and M.P. Thelen. (2015) Cyanobacterial reuse of extracellular organic carbon in microbial mats. ISME Journal (Nature), 10:1240-1251.

Keiluweit, M. S. Nico, M. Harmon, J. Mao, J. Pett-Ridge, and M. Kleber. (2015) Long-term litter decomposition controlled by manganese redox cycling, Proceedings of the National Academy of Sciences, 112: E5253–E5260.

Shi, S., E. Nuccio, D.J. Herman, R. Rijkers, U.N. da Rocha, Z. He, J. Zhou, J. Pett-Ridge, E. Brodie, and M.K. Firestone.  (2015) Successional trajectories of rhizosphere bacterial communities over consecutive seasons. mBio 01/2015; 6(4). doi: 10.1128/mBio.00746-15.

Mueller, R.S., S. Bryson, B. Kieft, Z. Li, J. Pett-Ridge, F. Chavez, R. L Hettich, C. Pan, X. Mayali. (2015) Metagenome sequencing of a coastal marine microbial community from Monterey Bay, California. Genome Announcements 3(2): doi: 10.1128/genomeA.00341-15.

Keiluweit, M., J.J. Bougoure, P.S. Nico, J. Pett-Ridge, P.K. Weber, M. Kleber. (2015). Mineral protection of soil carbon counteracted by root exudate.  Nature Climate Change 5: 588–595.

Hong-Hermesdorf, A.* M. Miethke,* S.D. Gallaher, J. Kropat, S.C. Dodani, D. Barupala, J. Chan, D.W. Domaille, D.I. Shirasaki, J.A. Loo, P.K. Weber, J. Pett-Ridge, T.L. Stemmler, C. J. Chang & Sabeeha S Merchant*.  (2014) Selective sub-cellular visualization of trace metals identifies dynamic sites of Cu accumulation in Chlamydomonas. Nature Chemical Biology 10: 1034–1042 *equal contrib.

Woebken, D., L.C. Burow, F. Behnam, X. Mayali, A. Schintlmeister, E.D. Fleming, L. Prufert-Bebout, S.W. Singer, A. López Cortés, T.M. Hoehler, J. Pett-Ridge, A.M. Spormann, M. Wagner, P.K. Weber, B.M. Bebout. (2015) Revisiting N2 fixation in Guerrero Negro intertidal microbial mats with a functional single-cell approach. ISME Journal 9:485-496.

Lee, J.Z., L. Burow, D. Woebken, R.C. Everroad, M.D. Kubo, A. Spormann, P.K. Weber, J. Pett-Ridge, B.M. Bebout, T.M. Hoehler. (2014) Fermentation couples Chloroflexi and sulfate-reducing bacteria to Cyanobacteria in hypersaline microbial mats. Frontiers Microbial Physiology and Metabolism 5:61.  doi: 10.3389/fmicb.2014.00061.

Mayali, X., P.K. Weber, S. Mabery, J. Pett-Ridge. (2014) Phylogenetic patterns in the microbial response to resource availability: amino acid incorporation in San Francisco Bay.  PlosOne 9(4):e95842.

Burow, L.C., D. Woebken, B. M. Bebout, I.P.G. Marshall, S.W. Singer, J. Pett-Ridge, L. Prufert-Bebout, A.M. Spormann, P. K. Weber and T.M. Hoehler. (2014) Identification of Desulfobacterales as primary hydrogenotrophs in a complex microbial mat community. Geobiology 12: 221-230.

Ceja-Navarro, J.A.*, N.H. Nguyen*, U. Karaoz, S. R Gross, D.J. Herman, G.L Andersen, T.D. Bruns, J. Pett-Ridge, M. Blackwell, E.L Brodie. (2014) Compartmentalized microbial composition, oxygen gradients and nitrogen fixation in the gut of Odontotaenius disjunctusISME Journal (Nature) 8:6-18.  *equal contribution. 

Carpenter, K.J., P.K. Weber, J. Pett-Ridge, M.L. Davisson, M.I. Haverty, P.J. Keeling (2013) Correlated SEM, FIB-SEM, TEM, and NanoSIMS imaging of microbes from the hindgut of a lower termite: Methods for in-situ functional and ecological studies of uncultivable microbes. Microscopy and Microanalysis 19: 1490-1501.

Everroad, R.C.*, D. Woebken*, S.W. Singer, L.C. Burow, N. Kyrpides, T. Woyke, L. Goodwin, A. Detweiler, L. Prufert-Bebout, J. Pett-Ridge. (2013) Draft genome sequence of the cyanobacterium ESFC-1.  Genome Announcements 4: e00527-13 *equal contribution

Pett-Ridge, J., D. G. Petersen, E. Nuccio and M. K. Firestone. (2013), Influence of oxic/anoxic fluctuations on ammonia oxidizers and nitrification potential in a wet tropical soil. FEMS Microbiology Ecology 85:179-194.

Mueller, C.W., P. K. Weber, M. R. Kilburn, C. Hoeschen, M. Kleber and J. Pett-Ridge. (2013) Advances in the Analysis of Biogeochemical Interfaces: NanoSIMS to Investigate Soil Microenvironments. Advances in Agronomy, Ed. D. Sparks, Vol 121, ISBN: 978-0-12-407685-3.

Nuccio E., A. Hodge, J. Pett-Ridge, D.J. Herman, P.K. Weber, M.K. Firestone. (2013) An arbuscular mycorrhizal fungus significantly modifies the soil bacterial community and nitrogen cycling during litter decomposition.  Environmental Microbiology 15:1870-81. Cover Image.

Mayali X, Weber P. K., Pett-Ridge J. (2013) Taxon-specific C/N relative use efficiency for amino acids in an estuarine community.  FEMS Microbiology Ecology 83:402-412.

Burow, L.C.*, D. Woebken*, I.P.G. Marshall, E.A. Lindquist, B.M. Bebout, L. Prufert-Bebout, T.M. Hoehler, S.G. Tringe, J. Pett-Ridge, P.K. Weber, A.M. Spormann, S.W. Singer. (2013). Anoxic carbon flux in photosynthetic microbial mats as revealed by metatranscriptomics and NanoSIMS. *equal contribution, ISME Journal (Nature) 7: 817-29.  Top 10 most downloaded. 

Keiluweit, M., J.J. Bougoure, L. Zeglin, D. Myrold, P. Weber, J. Pett-Ridge M. Kleber, P. Nico. (2012)  Nano-scale investigation of the association of microbial nitrogen residues with iron (hydr)oxides in a forest soil O-horizon. Geochim. et Cosmochim. Acta 95:213-226.

Jiao Y., A. Navid, B.J. Stewart, J.B. McKinlay, M. Thelen and J. Pett-Ridge. (2012). Syntrophic metabolism of a co-culture containing Clostridium cellulolyticum and Rhodopseudomonas palustris for hydrogen production. International Journal of Hydrogen Energy 37: 11719–11726.

Treseder, K. K. , T. C. Balser, M. A. Bradford, E. L. Brodie, E. A. Dubinsky, V. T. Eviner, K. S. Hofmockel, J. T. Lennon, U. Y. Levine, B. J. MacGregor, J. Pett-Ridge, and M. P. Waldrop. (2012). Integrating microbial ecology into ecosystem models: Challenges and priorities. Biogeochemistry 109: 7-18.

Woebken, D., L. Prufert-Bebout, L. Burow, B. Bebout, T. Hoehler, J. Pett-Ridge, A. M. Spormann, P.K. Weber, S.W. Singer. (2012). Identification of a novel cyanobacterial group as active diazotrophs in a coastal microbial mat using NanoSIMS. ISME Journal (Nature) 6: 1427-1439. Top 10 most downloaded.

Mayali, X., P.K. Weber, E.L. Brodie, S. Mabery, P. D.  Hoeprich, J. Pett-Ridge. (2012). High-throughput isotopic analysis of RNA microarrays to quantify microbial resource use. ISME Journal (Nature) 6: 1210-1221. 

Pett-Ridge, J. and P. Weber.  (2012) “NanoSIP: NanoSIMS applications for microbial biology”, Microbial Systems Biology: Methods and Protocols.  (Ali Navid, ed.), Methods in Molecular Biology Vol. 881. Humana press.  Cover Image.

Burow, L.C., D. Woebken, B. M. Bebout, P. J. McMurdie, S.W. Singer, J. Pett-Ridge, L.Prufert-Bebout, A.M. Spormann, P. K. Weber and T.M. Hoehler. (2012). Hydrogen production in photosynthetic microbial mats in the Elkhorn Slough estuary, Monterey Bay. ISME Journal (Nature) 6: 863–874.

Wolfe-Simon,F., J.S.Blum, T.R. Kulp, G. W. Gordon, S.E. Hoeft, J. Pett-Ridge, J.F. Stolz, S.M. Webb, P. K. Weber, P.C.W. Davies, A. D. Anbar and R.S. Oremland  (2011). Response to Comments on “A Bacterium That Can Grow Using Arsenic Instead of Phosphorus” Science 332:1149.

Wolfe-Simon,F., J.S.Blum, T.R. Kulp, G. W. Gordon, S.E. Hoeft, J. Pett-Ridge, J.F. Stolz, S.M. Webb, P. K. Weber, P.C.W. Davies, A. D. Anbar and R.S. Oremland  (2011). A bacterium that can grow by using arsenic instead of phosphorus.  Science 332:1163-6.

Myrold, D.D., J. Pett-Ridge, and P.J. Bottomley. (2011). Nitrogen mineralization and assimilation at millimeter scales. p. 91-114. Research on Nitrification and Related Processes, Part B (M.G. Klotz and L.Y. Stein, eds.) Methods in Enzymology Vol. 496. Elsevier, Inc., Academic Press, Burlington.

Pett-Ridge, J., Hoeprich, P., Brodie, E., and Weber, P.  (2011). PATENT #US20110195862. “Devices, Methods and Systems for Target Detection”, US Patent and Trademark Office, Lawrence Livermore National Security, USA.

Finzi, J.A.*, J. Pett-Ridge*, P. Weber, R. Popa, S. J. Fallon, T. Gunderson, I. Hutcheon, K.Nealson, D.G. Capone. (2009). Fixation and fate of carbon and nitrogen in Trichodesmium IMS101 using nanometer resolution secondary ion mass spectrometry (NanoSIMS).  *equal contribution. PNAS 106: 6345-6350.

Templer, P.H., W. Silver, J. Pett-Ridge, K. DeAngelis and M.K. Firestone. (2008). Plant and microbial controls on nitrogen retention and loss in a humid tropical forest.  Ecology 89:3030-3040. (cover photograph).

Behrens, S.*, T. Loesekann*, J. Pett-Ridge, P.K. Weber, W.O. Ng, B.S. Stevenson, I.D. Hutcheon, D.A. Relman, A.M. Spormann. (2008). Linking microbial phylogeny to metabolic activity at the single-cell level by using enhanced element labeling-catalyzed reporter deposition fluorescence in situ hybridization (EL-FISH) and NanoSIMS.  Applied and Environmental Biology 74:3143-3150.  *equal contribution.

Popa, R., P. Weber, J. Finzi, S. Fallon, J. Pett-Ridge, I.D. Hutcheon, K.H. Nealson and D.G. Capone. (2007). Carbon and nitrogen fixation and mobilization in and between individual cells of Anabaena oscillarioides.  ISME Journal (Nature) 1: 354-360.

Herrmann, A.M., K. Ritz, N. Nunan, P.L. Clode, J. Pett-Ridge, M.R. Kilburn, D.V. Murphy, A.G. O'Donnell, E.A. Stockdale. (2007). Nano-scale secondary ion mass spectrometry - A new analytical tool in biogeochemistry and soil ecology.  Soil Biology and Biochemistry 39: 1835-1850. (cover photograph).

Pardo, L., H. Hemond, J. Montoya and J. Pett-Ridge. (2007). Natural abundance of 15N in soil and litter across a nitrate-output gradient in New Hampshire.  Forest Ecology and Management 251: 217-230. 

Pett-Ridge, J., W. Silver and M.K. Firestone. (2006). Redox fluctuations in a humid tropical forest soil impact N-cycling rates by framing the composition of the soil microbial community. Biogeochemistry 81: 95-110.

Pett-Ridge, J. (2006). Probing Sub-cellular Bacterial Metabolism with Isotopic Tracers. Chemistry and Materials Science Directorate Annual Report, LLNL, CA.

Pett-Ridge, J. (2005). Rapidly Fluctuating Redox Regimes Frame the Ecology of Microbial Communities and Their Biogeochemical Function in a Humid Tropical Soil. Ph.D. Thesis.  University of California, Berkeley.

Pett-Ridge, J., and M. K. Firestone. (2005). Redox fluctuation structures microbial communities in a wet tropical soil.  Applied and Environmental Microbiology 71:  6998-7007.

Pardo, L. H., C. Kendall, J. Pett-Ridge, and C. C. Y. Chang.  (2004). Evaluating the source of streamwater nitrate using d15N and d18O in nitrate in two N.H. watersheds.  Hydrologic Processes. 18: 2699-2712.

Pett-Ridge, J., and W. Silver.  (2002). Survival, growth, and ecosystem dynamics of displaced bromeliads in a montane tropical forest.  Biotropica 32: 211-224.

White Papers and Technical Reports

  1. (multi-author) DOE BERAC Grand Challenges Workshop Report, March 2017
  2. (multi-author) DOE OBER Technologies for Characterizing Molecules to Mesoscale Workshop Report, Sept 2016
  3. (multi-author) Microbes and Climate Change, Report on an American Academy of Microbiology and American Geophysical Union Colloquium held in Washington, DC, March 2016
  4. (multi-author) U.S. DOE. 2014. Research for Sustainable Bioenergy: Linking Genomic and Ecosystem Sciences, Workshop Report, DOE/SC-0167. U.S. Department of Energy Office of Science

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