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Emily Graham
Biogeochemical Transformations IRP Leader

Emily Graham is an quantitative ecosystem ecologist in the Earth and Biological Sciences Division at PNNL and the leader of EMSL's Biogeochemical Transformations Integrated Research Platform. She leads EMSL’s 1000 Soils Pilot and a key member of PNNL’s soil microbiome SFA. She holds a joint faculty position in the School of Biological Sciences at Washington State University.

Research Interests

  • Microbial Ecology
  • Organic Matter and Integrated Biogeochemical Cycling
  • Disturbance and Urban Ecology


  • PhD in Biogeoscience, Environmental Studies, University of Colorado at Boulder, 2015
  • MS in Biogeoscience, Environmental Studies, University of Colorado at Boulder, 2012
  • BS in Biology, University of North Carolina at Chapel Hill, 2009



  • Naylor D, N Sadler, A Bhattacharjee, EB Graham, CR Anderton, R McClure, M Lipton, KS Hofmockel, JK Jansson. 2020. “Soil Microbiomes Under Climate Change and Implications for Carbon Cycling.” Annual Review of Environment and Resources Vol. 45
  • Ward ND, JP Megonigal, B Bond-Lamberty, VL Bailey, D Butman, EA Canuel, H Diefenderfer, NK Ganju, MA Goñi, EB Graham, CS Hopkinson, T Khangaonkar, JA Langley, NG McDowell, AN Myers-Pigg, RB Neumann, CL Osburn, RM Price, J Rowland, A Sengupta, M Simard, PE Thornton, M Tzortziou, R Vargas, PB Weisenhorn, L Windham-Myers. 2020. “Representing the function and sensitivity of coastal interfaces in Earth system models.”  Nat Commun 11, 2458 (2020).
  • Liu W, EB Graham, L Zhong, J Zhang, W Li, Z Li, X Lin, Y Feng. 2020. “Dynamic microbial assembly processes correspond to soil fertility in sustainable paddy agroecosystems.” Functional Ecology
  • Liu W, EB Graham, L Zhong, J Zhang, S Li, X Lin, Y Feng. 2020. “Long-term stochasticity combines with short-term variability in assembly processes to underlie rice paddy sustainability.” Front. Microbiol., 15 May 2020
  • Villa JA, GJ Smith, Y Ju, L Renteria, JC Angle, E Arntzen, SF Harding, H Ren, X Chen, AH Sawyer, EB Graham, JC Stegen, KC Wrighton, G Bohrer. 2020. “Methane and nitrous oxide porewater concentrations and surface fluxes of a regulated river.” Science of The Total Environment 715, 1369202020
  • Graham EB, C Averill, B Bond-Lamberty, JE Knelman, S Krause, AL Peralta, A Shade, A Peyton Smith, S Cheng, N Fanin, C Freund, PE Garcia, SM Gibbons, MW Van Goethem, MB Guebila, J Kemppinen, R Nowicki, JG Pausas, S Reed, J Rocca, A Sengupta, D Sihi, M Simonin, M Słowiński, S Spawn, I Sutherland, J Tonkin, NI Wisnoski, SC Zipper, Contributor Consortium. 2020. “Towards a unifying framework of disturbance ecology through crowdsourced science.” EcoEvoRxivdoi: 10.32942/
  • Wang J, P Legendre, J Soininen, C‐F Yeh, E Graham, J Stegen, EO Casamayor, J Zhou, J Shen, F Pan. 2020. “Temperature drives local contributions to beta diversity in mountain streams: Stochastic and deterministic processes.” Global Ecology and Biogeography 29 (3), 420-432
  • Nelson WC, EB Graham, AR Crump, SJ Fansler, EV Arntzen, DW Kennedy, JC Stegen. 2020. “Distinct temporal diversity profiles for nitrogen cycling genes in a hyporheic microbiome.” PloS one 15 (1), e02281652*2020A
  • Fang Y, X Chen, X Zhang, Z Duan, GE Hammond, AE Goldman, VA Garayburu-Caruso, EB Graham. 2020. “Multirate mass transfer model to represent the interaction of multicomponent biogeochemical processes between surface water and hyporheic zones (SWAT-MRMT-R 1.0).” Geoscientific Model Development Discussions, 1-282020
  • Danczak RE, AE Goldman, RK Chu, JG Toyoda, VA Garayburu-Caruso, N Tolić, EB Graham, JW Morad, L Renteria, JR Wells, SP Herzog, AS Ward, JC Stegen. 2020. “Ecological theory applied to environmental metabolomes reveals compositional divergence despite conserved molecular properties.” bioRxivdoi:
  • Danczak RE, RK Chu, SJ Fansler, AE Goldman, EB Graham, MM Tfaily, JG Toyoda, JC Stegen. 2020. “Unification of environmental metabolomics with metacommunity ecology.” bioRxiv12020doi: 
  • Garayburu-Caruso VA, JC Stegen, H-S Song, L Renteria, J Wells, W Garcia, CT Resch, AE Goldman, RK Chu, J Toyoda, EB Graham. 2020. “Carbon limitation leads to thermodynamic regulation of aerobic metabolism.” Environmental Science & Technology Letters
  • Graham EB, S Krause. 2020. “Social media sows consensus in disturbance ecology.” Nature. 2020 Jan;577(7789):170. DOI: 10.1038/d41586-020-00006-7.
  • Rue GP, JP Darling, E Graham, MM Tfaily, DM McKnight. 2020. “Dynamic changes in dissolved organic matter composition in a Mountain Lake under ice cover and relationships to changes in nutrient cycling and phytoplankton community composition.” Aquat Sci 82, 15 (2020).


  • Ward A, S Wondzell, N Schmadel, S Herzog, J Zarnetske, V Baranov, P Blaen, N Brekenfeld, R Chu, R Derelle, J Drummond, J Fleckenstein, V Garayburu-Caruso, E Graham, D Hannah, C Harman, J Hixson, J Knapp, S Krause, M Kurz. 2019. Spatial and temporal variation in river corridor exchange across a 5th-order mountain stream network.” Hydrology and Earth System Sciences 23(12),
  • Ward AS, JP Zarnetske, V Baranov, PJ Blaen, et al. 2019. “Co-located contemporaneous mapping of morphological, hydrological, chemical, and biological conditions in a 5th-order mountain stream network, Oregon, USA.” Earth Syst. Sci. Data, 11, 1567–1581, 2019
  • Brislawn CJ, EB Graham, K Dana, P Ihardt, SJ Fansler, WB Chrisler, JB Cliff, JC Stegen, JJ Moran, HC Bernstein. 2019. “Forfeiting the priority effect: turnover defines biofilm community succession.” The ISME Journal volume 13, pages1865–1877(2019)
  • Knelman JE, SK Schmidt, V Garayburu-Caruso, S Kumar, EB Graham. 2019. “Multiple, Compounding Disturbances in a Forest Ecosystem: Fire Increases Susceptibility of Soil Edaphic Properties, Bacterial Community Structure, and Function to Change with Extreme Precipitation Event.” Syst.3(2), 40;
  • Graham EB, F Yang, S Bell, KS Hofmockel. 2019. “High genetic potential for proteolytic decomposition in northern peatland ecosystems.” Environ. Microbiol. DOI: 10.1128/AEM.02851-18
  • Graham EB, JC Stegen, M Huang, X Chen, TD Scheibe. 2019. “Subsurface biogeochemistry is a missing link between ecology and hydrology in dam-impacted river corridors.” Science of the Total Environment Vol. 657, 435-445
  • Wells JR, AE Goldman, RK Chu, RE Danczak, VA Garayburu-Caruso, EB Graham, J Lewandowski, X Lin, K Meinikmann, JW Morad, BM Müller, H Ren, L Renteria, CT Resch, H Schulz, M Tfaily, N Tolic, JG Toyoda, and JC Stegen. 2019. “WHONDRS 48 Hour Diel Cycling Study at the Erpe River, Germany.” United States: N. p., 2019. Web. doi:10.15485/1577260. 
  • Chu RK, AE Goldman, SC Brooks, RE Danczak, VA Garayburu-Caruso, et al. 2019. “WHONDRS 48 Hour Diel Cycling Study at the East Fork Poplar Creek in Tennessee, USA.” Environmental System Science Data Infrastructure for a Virtual Ecosystem 
  • Renteria L, AE Goldman, RK Chu, RE Danczak, VA Garayburu-Caruso, et al. 2019. “WHONDRS 48 Hour Diel Cycling Study at the Nisqually River, WA.” Environmental System Science Data Infrastructure for a Virtual Ecosystem
  • Garayburu-Caruso VA, AE Goldman, RK Chu, RE Danczak, EB Graham, et al. 2019. “WHONDRS 48 Hour Diel Cycling Study at the Columbia River in Washington, USA.” Environmental System Science Data Infrastructure for a Virtual Ecosystem 
  • Danczak RE, AE Goldman, RK Chu, VA Garayburu-Caruso, EB Graham, et al. 2019. “WHONDRS 48 Hour Diel Cycling Study at the Altamaha River in Georgia, USA.” Environmental System Science Data Infrastructure for a Virtual Ecosystem 
  • Goldman AE, S Arnon, E Bar-Zeev, RK Chu, RE Danczak, et al. 2019. “WHONDRS 48 Hour Diel Cycling Study at the Jordan River, Israel.” Environmental System Science Data Infrastructure for a Virtual Ecosystem 
  • Stegen JC, AE Goldman, RK Chu, RE Danczak, VA Garayburu-Caruso, et al. 2019. “WHONDRS 48 Hour Diel Cycling Study at HJ Andrews Experimental Forest Watershed 1 (WS1).” Environmental System Science Data Infrastructure for a Virtual Ecosystem
  • Zegeye EK, CJ Brislawn, Y Farris, SJ Fansler, KS Hofmockel, JK Jansson, AT Wright, EB Graham, D Naylor, RS McClure, HC Bernstein. 2019. “Selection, succession, and stabilization of soil microbial consortia.” mSystems DOI: 10.1128/mSystems.00055-19


  • Stegen JC, AE Goldman, SE Blackburn, RK Chu, RE Danczak, VA Garayburu-Caruso, EB Graham, C Grieshauber, X Lin, JW Morad, H Ren, L Renteria, CT Resch, M Tfaily, N Tolic, JG Toyoda, JR Wells, KR Znotinas, SC Brooks, NJ Bouskill, M Newcomer, AR Rowe, A Saify, G Smith, MReza Soltanian, LR Trustschel, A Turetcaia. 2018. “Environmental System Science Data Infrastructure for a Virtual Ecosystem. WHONDRS Surface Water Sampling for Metabolite Biogeography. United States: N. p., 2018. Web. doi:10.15485/1484811.
  • Graham EB, AR Crump, DW Kennedy, E Arntzen, S Fansler, SO Purvine, CD Nicora, W Nelson, MM Tfaily, JC Stegen. 2018. “Multi'omics comparison reveals metabolome biochemistry, not microbiome composition or gene expression, corresponds to elevated biogeochemical function in the hyporheic zone.” Science of the Total Environment
  • Song X, X Chen, J Stegen, G Hammond, H‐S Song, H Dai, E Graham, JM Zachara. 2018. “Drought conditions maximize the impact of high‐frequency flow variations on thermal regimes and biogeochemical function in the hyporheic zone.” Water Resources Research
  • Hall EK, ES Bernhardt, RL Bier, et al. 2018. “Understanding how microbiomes influence the systems they inhabit.” Nat Microbiol 3, 977–982 (2018).
  • Plymale A, J Wells, E Graham, O Qafoku, S Brooks, B Lee2018Bacterial Productivity in a Ferrocyanide-Contaminated Aquifer at a Nuclear Waste Site.” Water 2018, 10(8), 1072;
  • Graham EB, RS Gabor, S Schooler, DM McKnight, DR Nemergut, JE Knelman. 2018. “Oligotrophic wetland sediments susceptible to shifts in microbiomes and mercury cycling with dissolved organic matter addition.” PeerJ 6:e4575
  • Stegen JC, TC Johnson, JK Fredrickson, MJ Wilkins, AE Konopka, WC Nelson, EV Arntzen, WB Chrisler, RK Chu, SJ Fansler, EB Graham, DW Kennedy, CT Resch, MM Tfaily, and JM Zachara. 2018. "Influences of organic carbon speciation on hyporheic corridor biogeochemistry and microbial ecology." Nature Communications 9:Article No. 585. doi:10.1038/s41467-018-02922-9


  • Graham EB, and JC Stegen. 2017. "Dispersal-Based Microbial Community Assembly Decreases Biogeochemical Function." Processes 5(4):Article No. 65.  doi:10.3390/pr5040065
  • Graham EB, AR Crump, CT Resch, SJ Fansler, EV Arntzen, DW Kennedy, JK Fredrickson, and JC Stegen. 2017. "Deterministic influences exceed dispersal effects on hydrologically-connected microbiomes." Environmental Microbiology 19:1552-1567.  doi:10.1111/1462-2920.13720
  • Graham EB, MM Tfaily, AR Crump, AE Goldman, LM Bramer, EV Arntzen, EB Romero, CT Resch, DW Kennedy, and JC Stegen. 2017. "Carbon inputs from riparian vegetation limit oxidation of physically bound organic carbon via biochemical and thermodynamic processes." Journal of Geophysical Research. Biogeosciences 122(12):3188-3205. doi:10.1002/2017JG003967
  • Goldman AE, EB Graham, AR Crump, DW Kennedy, EB Romero, CG Anderson, KL Dana, CT Resch, JK Fredrickson, and JC Stegen. 2017. "Biogeochemical cycling at the aquatic-terrestrial interface is linked to parafluvial hyporheic zone inundation history." Biogeosciences 14(18):4229-4241.  doi:10.5194/bg-14-4229-2017
  • Knelman J, EB Graham, S Ferrenberg, A Lecoeuvre, A Labrado, J Darcy, DR Nemergut, and SK Schmidt. 2017. "Rapid Shifts in Soil Nutrients and Decomposition Enzyme Activity in Early Succession Following Forest Fire." Forests 8(9):347.  doi:10.3390/f8090347


  • Graham EB, AR Crump, CT Resch, SJ Fansler, EV Arntzen, DW Kennedy, JK Fredrickson, and JC Stegen. 2016. "Coupling spatiotemporal community assembly processes to ecosystem function." Frontiers in Microbiology 7:Article No. 1949.  doi:10.3389/fmicb.2016.01949
  • Castle SC, DR Nemergut, AS Grandy, JW Leff, EB Graham, E Hood, SK Schmidt, K Wickings, and C Cleveland. 2016. "Biogeochemical drivers of microbial community convergence across actively retreating glaciers." Soil Biology and Biochemistry 101:74–84. doi:10.1016/j.soilbio.2016.07.010
  • Graham EB, JE Knelman, A Schindlbacher, S Siciliano, M Breulmann, et al. 2016. “Microbes as engines of ecosystem function: when does community structure enhance predictions of ecosystem processes?” Frontiers in microbiology 7, 214


  • Knelman JE, EB Graham, NA Trahan, SK Schmidt, DR Nemergut. 2015. “Fire severity shapes plant colonization effects on bacterial community structure, microbial biomass, and soil enzyme activity in secondary succession of a burned forest.” Soil Biology and Biochemistry 90, 161-168
  • Bier RL, ES Bernhardt, CM Boot, EB Graham, EK Hall, JT Lennon, et al. 2015. “Linking microbial community structure and microbial processes: an empirical and conceptual overview.” FEMS microbiology ecology 91 (10)
  • Rocca JD, EK Hall, JT Lennon, SE Evans, MP Waldrop, JB Cotner, et al. 2015. “Relationships between protein-encoding gene abundance and corresponding process are commonly assumed yet rarely observed.” The ISME journal 9 (8), 1693-1699


  • Graham EB, WR Wieder, JW Leff, SR Weintraub, AR Townsend, et al. 2014. “Do we need to understand microbial communities to predict ecosystem function? A comparison of statistical models of nitrogen cycling processes.” Soil Biology and Biochemistry 68, 279-282


  • Graham EB, SP Caro, KW Sockman. 2011. “Change in offspring sex ratio over a very short season in Lincoln's Sparrows: the potential role of bill development.” Journal of Field Ornithology 82 (1), 44-51