Current Research

I study how water, nutrients, and pollutants solutes flow through the landscape and affect streams, lakes, or wetlands.

As a research hydrologist with the USDA Forest Service in Grand Rapids, MN. I devote portions of my time to research at the Marcell Experimental Forest (MEF) and national-scale syntheses of data from multiple catchment studies. At the MEF, I co-lead research planning and research on hydrological and biogeochemical research. I have developed a research program that builds upon the 55-year legacy of research at this site. The MEF was established to study the ecology and hydrology of peatlands and uplands along the southern fringe of the boreal zone. I pursue research on the effects of nitrogen pollution on ecosystem functions, carbon cycling in peatlands, understanding effects of climate variability, interactions of dissolved organic matter with mercury and other trace metals, and quantifying effects of landscape disturbance on water and solutes yields. I am an investigator in the SPRUCE Experiment (Spruce and Peatland Response Under Climatic and Environmental change), a large-scale, experiment in which above- and below-ground temperatures are being manipulated in a black spruce-Sphagnum bog at the MEF.

While much of my research is based at the MEF, I continue to study lakes, streams, and wetlands elsewhere in Minnesota and on various catchment studies, whether in the USA or abroad. Some of these studies synthesize information from many sites and are intended to broaden understanding to national and global scales. My other research is focused on particular sites and particular environmental issues.  At the Sleepers River Research Watershed in northeastern Vermont, I explore how sources of stream nitrate and dissolved organic matter (DOM) vary over time and space. My research elsewhere in the northeastern USA includes studies of nitrate sources and DOM dynamics. Since the start of my graduate research, a portion of my work has been focused on how groundwater seepage influences biogeochemical cycles in lakes and wetlands. In several studies, I collaborate on research to quantify effects of groundwater seepage on lake trophic status.

I collaborate with a broad range of research scientists, graduate students, and undergraduate students. My position as a Forest Service scientist and being adjunct faculty at the University of Minnesota and Michigan Tech allow me to be highly involved with graduate and postdoctoral researchers.

Research Interests

I pursue research to:

• Quantify rates of terrestrial and aquatic biogeochemical transformations to definitively pinpoint the landscape processes that affect water chemistry.
• Determine how sources, transformations, and transport processes interact to control nutrient and pollutant concentrations within ecosystems.
• Quantify how short-term processes that occur at discrete locations and times (the hotspots and hot moments of biogeochemical processes) are important when considered at the ecosystem level.
• Synthesize understanding of hydrological and biogeochemical processes from various studies and locations to gain a general understanding of reference conditions and the effects of management decisions on water, air, and soil resources.

In addition, I collaborate to establish monitoring and experimental (manipulative) studies to identify how the timing, release, and cycling of solutes in catchments is affected by climatic and land use / land cover changes.

Why This Research is Important

The flow of water transfers energy and matter from the atmosphere and land to lakes, streams, wetlands, and coastal zones. My scientific interests center on understanding how water and chemicals are transported and transformed in the environment. With an emphasis on catchment science, I study hydrological and biogeochemical cycles to identify ways to effectively maintain water quality and ecosystem productivity. I use multiple approaches (hydrologic, biologic, geochemical, biogeochemical, and isotopic) across range of temporal, spatial, climatic, and ecological settings to study such issues as atmospheric pollutant deposition, forest health, ecosystem acidification, nutrient enrichment of surface waters, and ecosystem responses to climate change.

The variation of stream nutrient concentrations over time and space reflects complex processes that affect ecosystem functions, but more fundamentally, relates to the availability of biologically-essential substances that fuel life cycles on land and in water.

In landscapes where human activities enrich nutrient availability and affect land use / land cover, my work highlights the need to consider how water and nutrient cycles affect surface water chemistry. Understanding linkages among the atmosphere, land, and water helps to inform scientists, land managers, and policy makers who seek to protect valuable natural resources.

Education

• State University of New York College of Environmental Science & Forestry, Ph.D. Forest and Natural Resources Management 2008
• Cornell University, Department of Natural Resources, M.S. Program in Biogeochemistry & Global Change 2000
• Susquehanna University, Department of Geological and Environmental Sciences, B.S. 1997

Professional Organizations

• American Association for the Advancement of Science (AAAS)
• American Geophysical Union
• International Association of Hydrological Sciences

Awards & Recognition

Featured Publications & Products

• Sebestyen, Stephen D.; Lany, Nina K.; Roman, Daniel Tyler; Burdick, Jacob M.; Kyllander, Richard L.; Verry, Elon Sandy; Kolka, Randall K. 2021. Hydrological and meteorological data from research catchments at the Marcell Experimental Forest, Minnesota, USA.
• Sebestyen, Stephen D.; Funke, Meghan ; Cotner, James B. 2021. Sources and biodegradability of dissolved organic matter in two headwater peatland catchments at the Marcell Experimental Forest, northern Minnesota, USA.
• Hanson, Paul J.; Griffiths, Natalie A.; Iversen, Colleen M.; Norby, Richard J.; Sebestyen, Stephen D.; Phillips, Jana R.; Chanton, Jeffrey P.; Kolka, Randall K.; Malhotra, Avni ; Oleheiser, Keith C.; Warren, Jeffrey M.; Shi, Xiaoying ; Yang, Xiaojuan ; Mao, Jiafu ; Ricciuto, Daniel M. 2020. Rapid Net Carbon Loss From a Whole Ecosystem Warmed Peatland.
• Feng, Xue ; Deventer, M. Julian; Lonchar, Rachel ; Ng, G. H. Crystal; Sebestyen, Stephen D.; Roman, D. Tyler; Griffis, Timothy J.; Millet, Dylan B.; Kolka, Randall K. 2020. Climate Sensitivity of Peatland Methane Emissions Mediated by Seasonal Hydrologic Dynamics.
• Sebestyen, Stephen D.; Ross, Donald S.; Shanley, James B.; Elliott, Emily M.; Kendall, Carol ; Campbell, John L.; Dail, D. Bryan; Fernandez, Ivan J.; Goodale, Christine L.; Lawrence, Gregory B.; Lovett, Gary M.; McHale, Patrick J.; Mitchell, Myron J.; Nelson, Sarah J.; Shattuck, Michelle D.; Wickman, Trent R.; Barnes, Rebecca T.; Bostic, Joel T.; Buda, Anthony R.; Burns, Douglas A.; Eshleman, Keith N.; Finlay, Jacques C.; Nelson, David M.; Ohte, Nobuhito ; Pardo, Linda H.; Rose, Lucy A.; Sabo, Robert D.; Schiff, Sherry L.; Spoelstra, John ; Williard, Karl W. J. 2019. Unprocessed Atmospheric Nitrate in Waters of the Northern Forest Region in the U.S. and Canada.
• Griffiths, Natalie A.; Hanson, Paul J.; Ricciuto, Daniel M.; Iversen, Colleen M.; Jensen, Anna M.; Malhotra, Avni ; McFarlane, Karis J.; Norby, Richard J.; Sargsyan, Khachik ; Sebestyen, Stephen D.; Shi, Xiaoying ; Walker, Anthony P.; Ward, Eric J.; Warren, Jeffrey M.; Weston, David J. 2017. Temporal and Spatial Variation in Peatland Carbon Cycling and Implications for Interpreting Responses of an Ecosystem-Scale Warming Experiment.
• Shanley, James B.; Sebestyen, Stephen D.; McDonnell, Jeffrey J.; McGlynn, Brian L.; Dunne, Thomas. 2015. Water's Way at Sleepers River watershed - revisiting flow generation in a post-glacial landscape, Vermont USA.
• Sebestyen, Stephen D.; Shanley, James B.; Boyer, Elizabeth W.; Kendall, Carol; Doctor, Daniel H. 2014. Coupled hydrological and biogeochemical processes controlling variability of nitrogen species in streamflow during autumn in an upland forest.
• Sebestyen, Stephen D.; Dorrance, Carrie; Olson, Donna M.; Verry, Elon S.; Kolka, Randall K.; Elling, Art E.; Kyllander, Richard. 2011. Long-term monitoring sites and trends at the Marcell Experimental Forest. Chapter 2..
• Sebestyen, Stephen D.; Boyer, Elizabeth W.; Shanley, James B.; Kendall, Carol; Doctor, Daniel H.; Aiken, George R.; Ohte, Nobuhito. 2008. Sources, transformations, and hydrological processes that control stream nitrate and dissolved organic matter concentrations during snowmelt in an upland forest.

Publications

• Ricciuto, Daniel M.; Xu, Xiaofeng ; Shi, Xiaoying ; Wang, Yihui ; Song, Xia ; Schadt, Christopher W.; Griffiths, Natalie A.; Mao, Jiafu ; Warren, Jeffrey M.; Thornton, Peter E.; Chanton, Jeff ; Keller, Jason K.; Bridgham, Scott D.; Gutknecht, Jessica ; Sebestyen, Stephen D.; Finzi, Adrien ; Kolka, Randall ; Hanson, Paul J. 2021. An Integrative Model for Soil Biogeochemistry and Methane Processes: I. Model Structure and Sensitivity Analysis.
• Stockstad, Anna ; Gray, Ella ; Sebestyen, Stephen ; Lany, Nina ; Kolka, Randall ; Windmuller-Campione, Marcella . 2021. Analyzing Trends in Water Table Elevations at the Marcell Experimental Forest, Minnesota, U.S.A..
• McCarter, Colin P. R.; Sebestyen, Stephen D.; Eggert, Susan L.; Kolka, Randall K.; Mitchell, Carl P. J. 2021. Differential subsurface mobilization of ambient mercury and isotopically enriched mercury tracers in a harvested and residue harvested hardwood forest in northern Minnesota.
• Salmon, Verity G.; Brice, Deanne J.; Bridgham, Scott ; Childs, Joanne ; Graham, Jake ; Griffiths, Natalie A.; Hofmockel, Kirsten ; Iversen, Colleen M.; Jicha, Terri M.; Kolka, Randy K.; Kostka, Joel E.; Malhotra, Avni ; Norby, Richard J.; Phillips, Jana R.; Ricciuto, Daniel ; Schadt, Christopher W.; Sebestyen, Stephen D.; Shi, Xiaoying ; Walker, Anthony P.; Warren, Jeffrey M.; Weston, David J.; Yang, Xiaojuan ; Hanson, Paul J. 2021. Nitrogen and phosphorus cycling in an ombrotrophic peatland: a benchmark for assessing change.
• McEachran, Zachary P.; Karwan, Diana L.; Sebestyen, Stephen D.; Slesak, Robert A.; Ng, Gene-Hua Crystal. 2021. Nonstationary flood-frequency analysis to assess effects of harvest and cover type conversion on peak flows at the Marcell Experimental Forest, Minnesota, USA.
• Wilson, Rachel M.; Tfaily, Malak M.; Kolton, Max ; Johnston, Eric R.; Petro, Caitlin ; Zalman, Cassandra A.; Hanson, Paul J.; Heyman, Heino M.; Kyle, Jennifer E.; Hoyt, David W.; Eder, Elizabeth K.; Purvine, Samuel O.; Kolka, Randall K.; Sebestyen, Stephen D.; Griffiths, Natalie A.; Schadt, Christopher W.; Keller, Jason K.; Bridgham, Scott D.; Chanton, Jeffrey P.; Kostka, Joel E. 2021. Soil metabolome response to whole-ecosystem warming at the Spruce and Peatland Responses under Changing Environments experiment.
• Curtinrich, Holly J.; Sebestyen, Stephen D.; Griffiths, Natalie A.; Hall, Steven J. 2021. Warming Stimulates Iron-Mediated Carbon and Nutrient Cycling in Mineral-Poor Peatlands.
• McCarter, Colin P. R.; Sebestyen, Stephen D.; Eggert, Susan L.; Kolka, Randall K.; Mitchell, Carl P. J. 2020. Changes in hillslope hydrology in a perched, shallow soil system due to clearcutting and residual biomass removal.
• Sirota, Jennie I; Kolka, Randall K.; Sebestyen, Stephen D.; Nater, Edward A. 2020. Mercury dynamics in the pore water of peat columns during experimental freezing and thawing.
• Dymond, S.F. ; D'Amato, A.W. ; Kolka, R.K. ; Bolstad, P.V. ; Sebestyen, S.D. ; Gill, K. ; Curzon, M.T. . 2019. Climatic controls on peatland black spruce growth in relation to water table variation and precipitation.
• Bischof, Stefan M.; Herwig, Brian R.; Sebestyen, Stephen D.; Hanson, Mark A.; Zimmer, Kyle D.; Cotner, James B.; Kroeger, Timothy J. 2019. Further Development of a Specific Conductivity Approach to Measure Groundwater Discharge Area within Lakes.
• Herndon, Elizabeth M.; Kinsman-Costello, Lauren ; Duroe, Kiersten A.; Mills, Jonathan ; Kane, Evan S.; Sebestyen, Stephen D.; Thompson, Aaron A.; Wullschleger, Stan D. 2019. Iron (Oxyhydr)Oxides Serve as Phosphate Traps in Tundra and Boreal Peat Soils.
• Griffiths, Natalie A.; Sebestyen, Stephen D.; Oleheiser, Keith C. 2019. Variation in peatland porewater chemistry over time and space along a bog to fen gradient.
• Jeremiason, Jeff D.; Baumann, Erin I.; Sebestyen, Stephen D.; Agather, Alison M.; Seelen, Emily A.; Carlson-Stehlin, Benjamin J.; Funke, Meghan M.; Cotner, James B. 2018. Contemporary Mobilization of Legacy Pb Stores by DOM in a Boreal Peatland.
• Bertolet, Brittni L.; Corman, Jessica R.; Casson, Nora J.; Sebestyen, Stephen D.; Kolka, Randy K.; Stanley, Emily H. 2018. Influence of soil temperature and moisture on the dissolved carbon, nitrogen, and phosphorus in organic matter entering lake ecosystems.
• Woerndle, Glenn E.; Tsz-Ki Tsui, Martin ; Sebestyen, Stephen D.; Blum, Joel D.; Nie, Xiangping ; Kolka, Randall K. 2018. New Insights on Ecosystem Mercury Cycling Revealed by Stable Isotopes of Mercury in Water Flowing from a Headwater Peatland Catchment.
• Corman, J. R.; Bertolet, B. L.; Casson, N. J.; Sebestyen, S. D.; Kolka, R. K.; Stanley, E. H. 2018. Nitrogen and Phosphorus Loads to Temperate Seepage Lakes Associated With Allochthonous Dissolved Organic Carbon Loads.
• Oda, Tomoki ; Green, Mark B.; Urakawa, Rieko ; Scanlon, Todd M.; Sebestyen, Stephen D.; McGuire, Kevin J.; Katsuyama, Masanori ; Fukuzawa, Karibu ; Adams, Mary B.; Ohte, Nobuhito . 2018. Stream Runoff and Nitrate Recovery Times After Forest Disturbance in the USA and Japan.
• Walker, Anthony P.; Carter, Kelsey R.; Gu, Lianhong; Hanson, Paul J.; Malhotra, Avni; Norby, Richard J.; Sebestyen, Stephen D.; Wullschleger, Stan D.; Weston, David J. 2017. Biophysical drivers of seasonal variability in Sphagnum gross primary production in a northern temperate bog.
• Ma, Shuang ; Jiang, Jiang ; Huang, Yuanyuan ; Shi, Zheng ; Wilson, Rachel M.; Ricciuto, Daniel ; Sebestyen, Stephen D.; Hanson, Paul J.; Luo, Yiqi . 2017. Data-Constrained Projections of Methane Fluxes in a Northern Minnesota Peatland in Response to Elevated CO 2 and Warming.
• Dymond, Salli F.; Bradford, John B.; Bolstad, Paul V.; Kolka, Randall K.; Sebestyen, Stephen D.; DeSutter, Thomas M. 2017. Topographic, edaphic, and vegetative controls on plant-available water.
• Hill, Brian H.; Jicha, Terri M.; Lehto, LaRae L.P.; Elonen, Colleen M.; Sebestyen, Stephen D.; Kolka, Randy. 2016. Comparisons of soil nitrogen mass balances for an ombrotrophic bog and a minerotrophic fen in northern Minnesota.
• Griffiths, Natalie A.; Sebestyen, Stephen D. 2016. Dynamic vertical profiles of peat porewater chemistry in a northern peatland.
• Dymond, S.F.; D'Amato, A.W.; Kolka, Randy; Bolstad, P.V.; Sebestyen, Stephen; Bradford, J.B. 2016. Growth-climate relationships across topographic gradients in the northern Great Lakes.
• Amatya, Devendra; Campbell, John; Wohlgemuth, Pete; Elder, Kelly; Sebestyen, Stephen; Johnson, Sherri; Keppeler, Elizabeth; Adams, Mary Beth; Caldwell, Peter; Misra, D. 2016. Hydrological processes of reference watersheds in Experimental Forests, USA.
• Zwart, Jacob A.; Craig, Nicola; Kelly, Patrick T.; Sebestyen, Stephen D.; Solomon, Christopher T.; Weidel, Brian C.; Jones, Stuart E. 2016. Metabolic and physiochemical responses to a whole-lake experimental increase in dissolved organic carbon in a north-temperate lake.
• Wilson, R. M.; Hopple, A. M.; Tfaily, M. M.; Sebestyen, S. D.; Schadt, C. W.; Pfeifer-Meister, L.; Medvedeff, C.; McFarlane, K. J.; Kostka, J. E.; Kolton, M.; Kolka, R.K.; Kluber, L. A.; Keller, J. K.; Guilderson, T. P.; Griffiths, N. A.; Chanton, J. P.; Bridgham, S. D.; Hanson, P. J. 2016. Stability of peatland carbon to rising temperatures.
• Zwart, Jacob A.; Sebestyen, Stephen D.; Solomon, Christopher T.; Jones, Stuart E. 2016. The influence of hydrologic residence time on lake carbon cycling dynamics following extreme precipitation events.
• Sebestyen, Stephen; Kolka, Randy. 2016. Thirty-year results from a paired-catchment study of upland flowpath responses to forest cover conversion in northern Minnesota.
• Rose, Lucy A.; Sebestyen, Stephen D.; Elliott, Emily M.; Koba, Keisuke. 2015. Drivers of atmospheric nitrate processing and export in forested catchments.
• Lyttle, Amy; Yoo, Kyungsoo; Hale, Cindy; Aufdenkampe, Anthony; Sebestyen, Stephen D.; Resner, Kathryn; Blum, Alex. 2015. Impact of exotic earthworms on organic carbon sorption on mineral surfaces and soil carbon inventories in a northern hardwood forest.
• Resner, Kit; Yoo, Kyungsoo; Sebestyen, Stephen D.; Aufdenkampe, Anthony; Hale, Cindy; Lyttle, Amy; Blum, Alex. 2015. Invasive earthworms deplete key soil inorganic nutrients (Ca, Mg, K, and P) in a northern hardwood forest.
• Creed, Irena F.; Spargo, Adam T.; Jones, Julia A.; Buttle, Jim M.; Adams, Mary B.; Beall, Fred D.; Booth, Eric G.; Campbell, John L.; Clow, Dave; Elder, Kelly; Green, Mark B.; Grimm, Nancy B.; Miniat, Chelcy; Ramlal, Patricia; Saha, Amartya; Sebestyen, Stephen; Spittlehouse, Dave; Sterling, Shannon; Williams, Mark W.; Winkler, Rita; Yao, Huaxia. 2014. Changing forest water yields in response to climate warming: results from long-term experimental watershed sites across North America.
• Hill, Brian H.; Elonen, Colleen M.; Jicha, Terri M.; Kolka, Randall K.; Lehto, LaRae L.P.; Sebestyen, Stephen D.; Seifert-Monson, Lindsey R. 2014. Ecoenzymatic stoichiometry and microbial processing of organic matter in northern bogs and fens reveals a common P-limitation between peatland types.
• Mazur, M.; Mitchell, C.P.J.; Eckley, C.S.; Eggert, S.L.; Kolka, R.K.; Sebestyen, S.D.; Swain, E.B. 2014. Gaseous mercury fluxes from forest soils in response to forest harvesting intensity: A field manipulation experiment.
• Dymond, Salli F.; Kolka, Randall K.; Bolstad, Paul V.; Sebestyen, Stephen D. 2014. Long-term soil moisture patterns in a northern Minnesota forest.
• McGuire, Kevin J.; Sebestyen, Stephen D.; Ohte, Nobuhito; Elliott, Emily M.; Gomi, Takashi; Green, Mark B.; McGlynn, Brian L.; Tokuchi, Naoko. 2014. Merging perspectives in the catchment sciences: the US-Japan Joint Seminar on catchment hydrology and forest biogeochemistry.
• Argerich, A.; Johnson, S.L.; Sebestyen, S.D.; Rhoades, C.C.; Greathouse, E.; Knoepp, J.D.; Adams, M.B.; Likens, G.E.; Campbell, J.L.; McDowell, W.H.; Scatena, F.N.; Ice, G.G. 2013. Trends in stream nitrogen concentrations for forested reference catchments across the USA.
• Vose, James M.; Ford, Chelcy R.; Laseter, Stephanie; Dymond, Salli; Sun, Ge; Adams, Mary Beth; Sebestyen, Stephen; Campbell, John; Luce, Charlie; Amatya, Devendra; Elder, Kelly; Heartsill Scalley, Tamara. 2012. Can forest watershed management mitigate climate change effects on water resources.
• Vose, James M.; Ford, Chelcy R.; Laseter, Stephanie; Dymond, Salli; Sun, GE; Adams, Mary Beth; Sebestyen, Stephen; Campbell, John; Luce, Charles; Amatya, Devendra; Elder, Kelly; Heartsill-Scalley, Tamara. 2012. Can forest watershed management mitigate climate change impacts on water resources.
• Jones, Julia A.; Creed, Irena F.; Hatcher, Kendra L.; Warren, Robert J.; Adams, Mary Beth; Benson, Melinda H.; Boose, Emery; Brown, Warren A.; Campbell, John L.; Covich, Alan; Clow, David W.; Dahm, Clifford N.; Elder, Kelly; Ford, Chelcy R.; Grimm, Nancy B.; Henshaw, Donald L; Larson, Kelli L.; Miles, Evan S.; Miles, Kathleen M.; Sebestyen, Stephen D.; Spargo, Adam T.; Stone, Asa B.; Vose, James M.; Williams, Mark W. 2012. Ecosystem processes and human influences regulate streamflow response to climate change at long-term ecological research sites.
• Pellerin, Brian A.; Saraceno, John Franco; Shanley, James B.; Sebestyen, Stephen D.; Aiken, George R.; Wollheim, Wilfred M.; Bergamaschi, Brian A. 2012. Taking the pulse of snowmelt: in situ sensors reveal seasonal, event and diurnal patterns of nitrate and dissolved organic matter variability in an upland forest stream.
• Parsekian, Andrew D.; Slater, Lee; Ntarlagiannis, Dimitrios; Nolan, James; Sebestyen, Stephen D.; Kolka, Randall K.; Hanson, Paul J. 2012. Uncertainty in peat volume and soil carbon estimated using ground-penetrating radar and probing.
• Kolka, Randall K.; Sebestyen, Stephen D.; Bradford, John B. 2011. An evolving research agenda at the Marcell Experimental Forest. Chapter 3..
• Lyttle, Amy; Yoo, Kyungsoo; Hale, Cindy; Aufdenkampe, Anthony; Sebestyen, Stephen. 2011. Carbon-mineral interactions along an earthworm ivasion gradient at a sugar maple forest in northern Minnesota.
• Sebestyen, Stephen D.; Verry, Elon S. 2011. Effects of watershed experiments on water chemistry at the Marcell Experimental Forest. Chapter 14..
• Urban, Noel; Verry, Elon S.; Eisenreich, Steven; Grigal, David F.; Sebestyen, Stephen D. 2011. Element cycling in upland/peatland watersheds Chapter 8..
• Resner, Kathryn; Yoo, Kyungsoo; Hale, Cindy; Aufdenkampe, Anthony; Blum, Alex; Sebestyen, Stephen. 2011. Elemental and mineralogical changes in soils due to bioturbation along an earthworm invasion chronosequence in northern Minnesota.
• Sebestyen, Stephen D.; Verry, Elon S.; Brooks, Kenneth N. 2011. Hydrological responses to changes in forest cover on uplands and peatlands. Chapter 13..
• Verry, Elons S.; Brooks, Kenneth N.; Nichols, Dale S.; Ferris, Dawn R.; Sebestyen, Stephen D. 2011. Watershed hydrology. Chapter 7..
• Vidon, Philippe; Allan, Craig; Burns, Douglas; Duval, Tim P.; Gurwick, Noel; Inamdar, Shreeram; Lowrance, Richard; Okay, Judy; Scott, Durelle; Sebestyen, Stephen. 2010. Hot spots and hot moments in riparian zones: Potential for improved water quality management.
• Sebestyen, Stephen D.; Boyer, Elizabeth W.; Shanley, James B. 2009. Responses of stream nitrate and DOC loadings to hydrological forcing and climate change in an upland forest of the northeastern United States.
• Glynn, Pierre D.; Larsen, Matthew C.; Greene, Earl A.; Buss, Heather L.; Clow, David W.; Hunt, Randall J.; Mast, M. Alisa; Murphy, Sheila F.; Peters, Norman E.; Sebestyen, Stephen D.; Shanley, James B.; Walker, John F. 2009. Selected achievements, science directions, and new opportunities for the WEBB Small Watershed Research Program.
• Sebestyen, Stephen D.; Shanley, James B.; Boyer, Elizabeth W. 2009. Using high-frequency sampling to detect effects of atmospheric pollutants on stream chemistry.
• Doctor, Daniel H.; Kendall, Carol; Sebestyen, Stephen D.; Shanley, James B.; Ohte, Nobuhito; Boyer, Elizabeth W. 2008. Carbon isotope fractionation of dissolved inorganic carbon (DIC) due to outgassing of carbon dioxide from a headwater stream.
• Ohte, N.; Sebestyen, S.D.; Kendall, C.; Shanley, J.B.; Wankel, S.D.; Doctor, D.H.; Boyer, E.W. 2004. Tracing sources of nitrate in snowmelt runoff using a high-resolution isotopic technique.

Research Highlights

Highlight	Title	Year
NRS-2018-109	Legacy Lead vs. Newer Mercury: Atmospheric Pollutants Linger in Streams Trace metal pollutants from the atmosphere may affect water resources on vastly different timescales. Lead from before the 1980s still leaches f ...	2018
NRS-2020-77	Warming Peatlands Emit Carbon Faster than Previously Known Peatlands occupy just 3 %of the planet but store about 30 %of the soil carbon in terrestrial landscapes. A team of scientists is exploring wheth ...	2020
NRS-2015-175	“Smart Forests” Digital Environmental Sensors and Telecommunications Take Research to New Levels Scientific breakthroughs of the 21st century will be powered by tools that help researchers collect and manipulate massive datasets, visualize t ...	2015