Associate Professor of Geochemistry

The Earth’s surface is now often termed the Critical Zone (CZ) and provides everything life on Earth needs. However, the pressures of the Anthropocene such as climate change or acid rain, weaken this zones’ capacity to support us, requiring a concerted effort to understand complex and coupled response to these pressures. With my background in geology, mineralogy, biogeochemistry and geomicrobiology, I take an interdisciplinary and collaborative approach to study this zone with an emphasis on carbon and nutrient dynamics. My current projects focus on a variety of land water interactions, such as effects of drought, heavy precipitation or acid rain on the quality of soils, streams, and ground water. For this we combine data science, field observations and experimental lab investigations in a collaborative setting. My teaching integrates this interdisciplinary setting and uses hands-on approaches to understand Deep Earth and mineralogical processes (e.g. GEOL110), surface environmental dynamics (e.g. GEOL135), and land water interactions (e.g. GEOL235).

Fall 2022 Syllabus:
GEOL 135: Environmental Geochemistry (PDF)


  • Juice SM, Schaberg PG, Kosiba AM, Waite CE, Hawley GJ, Wang D, Perdrial, J.N. Adair C. E., (2022). Soil Type Modifies the Impacts of Warming and Snow Exclusion on Carbon and Nutrient Losses. Biogeochemistry 160(2), 199-217.
  • Seybold, E.C., Kincaid, D., Musselman, K., Schroth, A., Adair, C., Perdrial, J.N., Dwivedi, R., Classen, A. (2022). Winter runoff events pose an unquantified continental-scale risk of high wintertime nutrient export. Environmental Research Letters.
  • Li Li, Stewart, B., Zhi, W., Sadayappan, K., Kerins, D. Ramesh, S., Sterle, G., Harpold, A., Perdrial, J.N., (2022). The Predominant Control of Climate on River Chemistry. Earth’s Future.
  • Shanley, J., Taylor, V.F., Ryan, K., Chalmers, A.T., Perdrial, J.N., Stubbins, A., Using DOM fluorescence to predict total mercury and methylmercury in forested headwater streams, Sleepers River, Vermont USA. (2022). Hydrological Processes. 36(5), e14572.
  • Lancellotti, B. V., K. L. Underwood, Perdrial, J.N., C. Adair, A. W. Schroth and E. Roy (2022). "Complex Drivers of Riparian Soil Oxygen Variability Revealed Using Self-Organizing Maps." Biogeochemistry.
  • Bryn Stewart, James B. Shanley, James W. Kirchner, David Norris, Thomas Adler, Caitlin Bristol, Adrian A. Harpold, Perdrial, J.N., Donna M. Rizzo, Gary Sterle, Kristen L. Underwood, Hang Wen, and Li Li (2021). Streams as mirrors: reading subsurface water chemistry from stream chemistry. Water Resources Research
  • Adler T, Underwood KL, Rizzo DM, Harpold AA, Sterle G, Li L, Wen H, Stinson L, Bristol C, Shanley J, Lini A, Perdrial N, Perdrial, J.N. (2021). Drivers of Dissolved Organic Carbon (DOC) in Forested Headwater Catchments: A Multi Scale Approach. Frontiers in Biogeoscience.
  • Ryan, K. A., T. Adler, A. Chalmers, Perdrial, J.N., J. B. Shanley and A. Stubbins (2021). "Event Scale Relationships of DOC and TDN Fluxes in Throughfall and Stemflow Diverge From Stream Exports in a Forested Catchment."  126(7): e2021JG006281.
  • Harrington, S., DeSanto, D., Sherriff, G., Carson, W., Perdrial, J.N. (2021) “Going WILD: Adding information literacy to WEC. Book chapter (9) in Anson, Chris M., & Pamela Flash (Eds.). (2022). Writing-Enriched Curricula: Models of Faculty-Driven and Departmental Transformation. The WAC Clearinghouse; University Press of Colorado.
  • Perdrial, J.N, Sullivan PL, Dere A, West N (2020) Editorial: Critical Zone (CZ) Export to Streams as Indicator for CZ Structure and Function. Frontiers in Earth Science 8(37). 
  • Landsman-Gerjoi M, Perdrial, J.N., Lancellotti B, Seybold E, Schroth AW, Adair C, Wymore A (2020) Measuring the Influence of Environmental Conditions on Dissolved Organic Matter Biodegradability and Optical Properties: A Combined Field and Laboratory Study. Biogeochemistry 149, 37–52.
  • Kincaid D, Seybold EC, Adair C, Bowden WB, Perdrial, J.N., Vaughan MCH, Schroth AW (2020) Land Use and Season Influence Event-scale Nitrate and Soluble Reactive Phosphorus Exports and Export Stoichiometry from Headwater Catchments. Water Resources Research
  • MacNeille, R. B., Lohse, K., Godsey, S., Derryberry, D., McCorkle, E., Parson, S., Baxter, C., Perdrial, J.N. (2020) Stream structure at low flow: biogeochemical patterns of intermittent streams over space and time. Frontiers.
  • Cincotta, M., Perdrial, J.N.Shavitz, A., Libenson, A., Landsman, M., Perdrial, N., Armfield, J., Adler, T., Shanley, J. (2019). Soil aggregates as a source of dissolved organic carbon to streams: an experimental study on the effect of solution chemistry on water extractable carbon, Frontiers in Earth Science: Biogeosciences. 
  • Armfield, J., Perdrial, J.N.Gagnon, A., Ehrenkranz, J., Perdrial, N., Cincotta, M., Ross, D., Shanley, J., Underwood, K., Ryan, P. (2019). Does stream water composition at Sleepers River in Vermont reflect dynamic changes in soils during recovery from acidification? Frontiers in Earth Science: Biogeosciences.
  • Wen H, Perdrial, J.N., Bernal S, Abbott BW, Dupas R, Godsey SE, Harpold A, Rizzo D, Underwood K, Adler T, Hale R, Sterle G, Li L (2019) Temperature controls production but hydrology controls export of dissolved organic carbon at the catchment scale. Hydrol. Earth Syst. Sci. Discuss. 2019: 1-35.
  • ​Radke, A., Godsey, S., Lohse, K., McCorkle, E., Perdrial, J.N., Seyfried, M.S., Holbrook, S. (2019). Spatiotemporal Heterogeneity of Water Flowpaths Controls Dissolved Organic Carbon Sourcing in a Snow-dominated, Headwater Catchment. Front. Ecol. Evol.,
  • Bierman, P., Schmidt, A H., Campbell, M., K., Dethier, D. P., Dix, M., Racela, J., Perdrial, J.N.Massey-Bierman, M. E., Sibello Hernández, R. Y., Cartas Aguila, H. A., Guillén Arruebarrena, A., García Moya, A., and Alonso-Hernández, C. (2019). !Cuba! River Water Chemistry Reveals Rapid Chemical Weathering, the Echo of Uplift, and the Promise of More Sustainable Agriculture. GSA today.
  • Perdrial J.N., Brooks P.D., Swetnam T., Rasmussen C., Lohse K.A., Litvak, M., Harpold, A.A., Broxton, P., Mitra, B., Meixner, T., Condon, K., Huckle, D., Stielstra, C., Vazquez-Ortega, A., Lybrand, R., Holleran, M., Orem, C., Chorover, J. (2018). A net ecosystem carbon budget for snow dominated forested headwater catchments: linking water and carbon fluxes to critical zone carbon storage. Biogeochemistry. 138(3):225-243.
  • Hernandez-Ruiz, S., Perdrial, J.N., Segraves, D. (accepted). Evaluation of Corrosion Control Products on a Distribution System through Crowdsourcing. Environmental Science and Pollution Research.
  • Wymore, A.S., West, N.R., Maher, K., Sullivan, P.L., Harpold, A.A., Karwan, D., Marshall, J.A., Perdrial, J.N., Rempe, D.M., Ma, L. (2017). Growing New Generations of International Critical Zone Scientists. Earth Surface Processes and Landforms. (42):2498-2502.
  • Li, L., Maher, K., Navarre-Sitchler, A., Druhan, J., Meile, C., Lawrence, C., Moore, J., Perdrial, J.N., Sullivan, P., Thompson, A., Jin, L., Bolton, E.W., Brantley, S., Dietrich, W., Mayer, K.U., Steefel, C.I., Valocchi, A., Zachara, J.,  Kocar, B., McIntosh, J., Tutolo, B.M., Kumar, M., Sonnenthal, E., Bao, Ch., Beisman, J.(2017). Expanding the role of reactive transport models in critical zone processes. Earth Science Reviews (165): 280-301.
  • McIntosh, J., Schaumberg, C., Perdrial, J.N., Harpold, A.A., Vazquez-Ortega, A., Rasmussen, C., Vinson, D., Zapata-Rios, X., Brooks, P.D., Meixner, T., Pelletier, J., Derry, L., Chorover, J. (2017). Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships: Jemez River Basin Critical Zone Observatory. Water Resources Research. (53): 4169-4196.
  • Clark, K.E., Shanley, J.B., Scholl, M.A., Perdrial, N., Perdrial, J.N., Plante, A.F., McDowell, W.H. (2017). Tropical River suspended sediment and solute dynamics in storms during an extreme drought. Water Resources Research (53): 3695-3712.
  • Miller, M. Boyer, E., McKnight, D., Brown, M., Iavorivska, L., Hunsaker, C. Inamdar, S. McDowell, W., Kaplan, L., Gabor, R., Lin, H., Johnson, D., Perdrial, J.N. (2016). Regional Variation in Organic Matter Quantity and Quality among Five Critical Zone Observatories. Water Resources Research. 52-10: 8201-8216.
  • Caulk, R. A., E. Ghazanfari, Perdrial, J.N and N. Perdrial (2016). "Experimental investigation of fracture aperture and permeability change within Enhanced Geothermal Systems." Geothermics 62: 12-21.
  • Vázquez-Ortega, A., D. Huckle, Perdrial, J.N, M. K. Amistadi, M. Durcik, C. Rasmussen, J. McIntosh and J. Chorover (2016). "Solid-phase redistribution of rare earth elements in hillslope pedons subjected to different hydrologic fluxes." Chemical Geology 426: 1-18.
  • Vázquez-Ortega, A., Perdrial, J.N, A. Harpold, X. Zapata, C. Rasmussen, J. McIntosh, M. Schaap, J. Pelletier, P. Brooks, M. K. Amistadi and J. Chorover (2015). "Rare earth elements as reactive tracers of biogeochemical weathering in forested rhyolitic terrain." Chemical Geology 391 19-32.
  • Stielstra, C.M., Lohse, K.A., Chorover, J., McIntosh, J.C., Barron-Gafford, G.A., Perdrial, J.N., Litvak, M., Barnard, H.R., Brooks, P.D. (2015). Climatic and landscape influences on soil moisture are primary determinants of soil carbon fluxes in seasonally snow-covered forest ecosystems. Biogeochemistry 123(3):447-465.
  • Perdrial, J.N., J. McIntosh, A. Harpold, P. Brooks, P. Troch, J. Ray, X. Zapata-Rios, C Porter, J.Chorover. (2014). Controls of stream water carbon in seasonally snow-covered mountain catchments: impact of water fluxes, catchment aspect and seasonal processes. Biogeochemistry 118(1-3): 273-290.
  • Perdrial, J.N., Perdrial N., Porter C., Vazquez-Ortega A., Leedy J. and Chorover J. (2014).  Experimental assessment of fiberglass passive capillary wick sampler (PCap) suitability for inorganic soil solution constituents, Soil Science Society of America Journal78, 486-495.
Image of a happy, smiling Julia on a sunny day on the UVM Green

Areas of Expertise and/or Research

Laboratory and field-based investigations of Earth surface processes (i.e. Critical Zone processes) including: carbon dynamics, dissolved organic matter, catchment hydrology and biogeochemistry, biotic and abiotic primary and secondary mineral alteration and weathering, clay mineralogy, and general environmental geochemistry.


  • PhD in Physics, Chemistry and Biology of the Environment, Université Louis Pasteur, Strasbourg, France (2008)
  • M.S. University of Heidelberg 2004
  • B.S. University of Heidelberg 2001


  • (802) 656-0665
Office Location:

Delehanty Hall, Room 321

  1. Julia's website