H021
Advancing Science through Long-Term Monitoring, Observation, and Experimentation in Catchment, Critical Zone, and Ecosystem Studies

Session ID#: 85497

Session Description:
Across scales, watershed, critical zone, and ecosystem studies are vital to expanding theory and discovery in hydrological, biogeochemical, and ecological process understanding. Well-studied sites provide context, especially when coupled with land management and environmental change experiments. Long-term studies and monitoring at sentinel sites have proved invaluable for detecting, documenting, and understanding fundamental processes and effects of environmental change on ecosystems. New technologies, sites, and field experiments are feeding the innovation and closing knowledge gaps. Multi-site comparisons at various temporal and spatial scales provide information needed to build theory, manage ecosystems, and inform modeling efforts. We seek contributions on these efforts, and especially encourage submissions that demonstrate societal relevance.
Co-Organized:
  • B - Biogeosciences
Index Terms:

1804 Catchment [HYDROLOGY]
1806 Chemistry of fresh water [HYDROLOGY]
1848 Monitoring networks [HYDROLOGY]
1895 Instruments and techniques: monitoring [HYDROLOGY]


Primary Convener:  Stephen D Sebestyen, USDA Forest Service, Northern Research Station, Vallejo, CA, United States
Conveners:  James B Shanley, USGS, Montpelier, VT, United States, Jonathan M Duncan, Pennsylvania State University Main Campus, Ecosystem Science and Management, University Park, PA, United States and Taehee Hwang, Indiana University Bloomington, Department of Geography, Bloomington, IN, United States
Primary Liaison:  Stephen D Sebestyen, USDA Forest Service, Northern Research Station, Vallejo, CA, United States
 
Key Parameters Controlling the Seasonal and Inter-annual Variations of pCO2, Chemical Composition and Carbonate Equilibrium in Stream Water from a Mountainous Karstic Catchment (Pyrenees, France) (486965)
Francesco Ulloa Cedamanos1, Jean-Luc Probst1, Sthépane Binet2, Thierry Camboulive1, Virginie Payre Suc1, Corinne Pautot1, Michel Bakalowicz3 and Anne Probst1, (1)EcoLab, Université de Toulouse, CNRS, Toulouse, France, (2)Institut des Sciences de la Terre d’Orléans (ISTO), Université d’Orléans, CNRS, Orléans, France, (3)HSM, Université de Montpellier, CNRS, Montpellier, France
 
Forest density reduction impacts on productivity, water use and drought resilience (492396)
Christina (Naomi) Tague, University of California Santa Barbara, Santa Barbara, CA, United States, Max Moritz, University of California, Santa Barbara , UC Cooperative Extension, Santa Barbara, CA, United States and Tamir Klein, Weizmann Institute of Science, Department of Plant and Environmental Sciences, Rehovot, Israel
 
Streamflow response and recovery after forest disturbance in different climates (500689)
Tomoki Oda, University of Virginia, Environmental Science, Charlottesville, United States; The University of Tokyo, Tokyo, Japan, Lawrence E Band, University of Virginia, Engineering Systems and Environment, Charlottesville, VA, United States, Mark B. Green, Case Western Reserve University, Department of Earth, Environmental, and Planetary Sciences, Cleveland, OH, United States, Todd M Scanlon, Univ Virginia, Charlottesville, VA, United States, Stephen D Sebestyen, USDA Forest Service, Northern Research Station, Vallejo, CA, United States, Kevin J McGuire, Virginia Tech, Forest Resources and Environmental Conservation/Virginia Water Resources Research Center, Blacksburg, VA, United States, Mary B Adams, US Forest Service, Northern Research Station, Morgantown, WV, United States, Masanori Katsuyama, Kyoto Prefectural University, Environmental Science, Kyoto, Japan, Takanori Shimizu, Forestry & Forest Products Research Institute, Department of Disaster Prevention, Meteorology and Hydrology, Ibaraki, Japan, Rieko Urakawa, Japan Environmental Sanitation Center (JESC), Ecological Impact Research Department/, Niigata, Japan, Karibu Fukuzawa, Hokkaido University, Sapporo, Japan and Nobuhito Ohte, Kyoto University, Department of Social Informatics, Kyoto, Japan
 
Implications of the difference in seasonal variations of nitrate discharge from the temperate forest ecosystems between monsoon and non-monsoon zones (505284)
Nobuhito Ohte, Kyoto University, Department of Social Informatics, Kyoto, Japan and Masanori Katsuyama, Kyoto Prefectural University, Environmental Science, Kyoto, Japan
 
Seasonal and event-based concentration discharge relationships from contrasting Arctic headwater catchments (506601)
Arial Shogren1, Jay P Zarnetske2, Benjamin W Abbott3, Samuel T Cairns4, Frances Iannucci5, Megan J Duda6 and William B Bowden5, (1)Michigan State University, East Lansing, MI, United States, (2)Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, (3)Brigham Young University, Provo, UT, United States, (4)Michigan State University, Earth & Environmental Sciences, East Lansing, United States, (5)University of Vermont, Burlington, VT, United States, (6)Michigan State University, East Lansing, United States
 
A comparison of transit time distribution vs. fraction of young water to characterize storage in a mountain headwater catchment: does the tail matter? (509131)
Ravindra Dwivedi1, Christopher J Eastoe2, John F Knowles3, Mcintosh, Jennifer C4, Thomas Meixner1, Ty P.A. Ferre2, Rebecca L. Minor5, Greg Barron‐Gafford5, Nate Abramson6, M. Stanley7 and Jon Chorover8, (1)University of Arizona, Hydrology and Atmospheric Sciences, Tucson, AZ, United States, (2)Univ Arizona, Tucson, AZ, United States, (3)USDA-ARS, Southwest Watershed Research Center, Tucson, AZ, United States, (4)The University of Arizona, HAS, Tucson, AZ, United States, (5)University of Arizona, School of Geography & Development, Tucson, AZ, United States, (6)University of Arizona, Biosphere 2, Tucson, AZ, United States, (7)Mt. Lemmon Water District, Tucson, United States, (8)University of Arizona, Environmental Science, Tucson, AZ, United States
 
CRITICAL PEAT project : The importance of hydrology for Carbon Reactivity along with atmosphere - peatland interactions. Preliminary results from the Frasne peatland monitoring (Jura Mountains, France). (509838)
Alexandre Lhosmot1, Guillaume Bertrand2, Marc Steinmann1, Marie-Laure Toussaint1, Catherine Bertrand1, Louis Collin3, Alex Ponçot2, Geneviève Magnon3, Hélène Jeanton1, anne-Véronique Walter1, Vincent Bichet4, Sophie Denimal1, Daniel Gilbert4, Philippe Binet1, Vanessa Stefani1, Christophe Loup1, Nadia Crini1, Vincent Bertus5, Frédéric Paran6, Didier Graillot6, Véronique Lavastre7, Sébastien Pinel8, Huseyin Caldirak8, Sébastien Gogo9, Fatima Laggoun-Defarge10, Adrien Jacotot9, Jean-Sebastien Moquet Jr.9, Sthépane Binet9, Laure Gandois11, Thierry Winiarski12 and CRITICAL PEAT TEAM, (1)Université Bourgogne Franche-Comté, Chrono-Environnement UMR UFC CNRS 6249, Besançon, France, (2)Université Bourgogne Franche-Comté, Chrono-Environnement UMR UFC CNRS 6249, Montbéliard, France, (3)Syndicat Mixte des Milieux Aquatiques du Haut-Doubs, Frasne, France, (4)Université Bourgogne Franche-Comté, Chrono-Environnement UMR UFC CNRS 6249, Besancon, France, (5)Syndicat Mixte Des Milieux Aquatiques Du Haut-Doubs, Frasne, France, (6)École des Mines de Saint-Étienne, Saint-Etienne, France, (7)Université de Saint-Etienne, Laboratoire Magmas et Volcans, Saint-Etienne, France, (8)IMT Mines Alès, Alès, France, (9)Institut des Sciences de la Terre d’Orléans (ISTO), Université d’Orléans, CNRS, Orléans, France, (10)Institut des Sciences de la Terre d’Orléans (ISTO), Université d’Orléans, CNRS, CNRS/INSU, BRGM, ISTO, Orleans, France, (11)Institut national polytechnique de Toulouse, Toulouse, France, (12)ENTPE, l'école de l'aménagement durable des territoires, Lyon, France
 
Water transit time estimates for 13 forested headwater catchments based on comprehensive and long-term observations from the Turkey Lakes Watershed Study (511687)
Jason Leach, Canadian Forest Service, Sault Ste Marie, ON, Canada; Trent University, Peterborough, ON, Canada, James M Buttle, Trent Univ, Peterborough, ON, Canada, Kara L Webster, Canadian Forest Service, Ottawa, ON, Canada, Paul W Hazlett, Canadian Forest Service, Sault Ste. Marie, ON, Canada and Dean Jeffries, Environment and Climate Change Canada, Burlington, Canada
 
Stream Water Quality in the Slapton catchments the value of long-term monitoring (515472)
Timothy Peter Burt, University of Durham, Durham, United Kingdom, Fred Worrall, Durham University, Durham, United Kingdom, Nicholas J K Howden, University of Bristol, Bristol, BS8, United Kingdom, Helen P Jarvie, Centre for Ecology and Hydrology, Wallingford, Oxfordshire, United Kingdom, Andrew D Pratt, Field Studies Council, Slapton Ley Field Centre, Slapton, United Kingdom and Thomas Hutchinson, Plymouth University, Plymouth, United Kingdom
 
Nonstationary Flood-Frequency Analysis for Streams at the Marcell Experimental Forest, Minnesota, USA (516591)
Zachary P McEachran1, Diana L Karwan2, Stephen D Sebestyen3, G. H. Crystal Ng4 and Rob Slesak2, (1)University of Minnesota, St Paul, MN, United States, (2)University of Minnesota Twin Cities, Minneapolis, MN, United States, (3)USDA Forest Service, Northern Research Station, Vallejo, CA, United States, (4)University of Minnesota, Twin Cities, Department of Earth Science, Minneapolis, MN, United States
 
Long-term observations of fine-root, stem, and leaf phenology across 13 diverse and model-relevant temperate tree species (518079)
M. Luke McCormack1, Meghan Midgley1, Marvin Lo1, Newton Tran1 and Colleen M. Iversen2, (1)The Morton Arboretum, Center for Tree Science, Lisle, IL, United States, (2)Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, TN, United States
 
Comparing Different Spectral Indices in Monitoring Forest Disturbances Using Landsat Time Series Imagery (519660)
Mahsa Khodaee, Indiana University Bloomington, Bloomington, IN, United States, Taehee Hwang, Indiana University Bloomington, Department of Geography, Bloomington, IN, United States, JiHyun Kim, Indiana University, Bloomington, IN, United States, Sara Thompson, Colorado State university, Fort Collins, United States and Steven P Norman, USDA Forest Service, Asheville, NC, United States
 
Understanding of aquifer characteristics and evaluating the responses of aquifer type to earthquakes from the National Groundwater Monitoring Station (526719)
Jae-Min Lee1, Nam Chil Woo2, Kyung-Seok Ko1 and Dong-Chan Koh1, (1)Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea, (2)Yonsei University, Earth System Sciences, Seoul, South Korea
 
Deciphering the Solutes Production and Transport Processes in Asian Monsoonal Rivers from Concentration-Discharge Relationships (530309)
Jun Zhong, Tianjin University, Tianjin, China, Si-Liang Li, Institute of Surface-Earth System Science,Tianjin University, Tianjin, China, Daniel Enrique Ibarra, Stanford University, Stanford, CA, United States, Hu Ding, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China and Cong-Qiang Liu, Chinese Academy Sciences, Guiyang, Guizhou, China
 
Revisiting a 50-year-old hillslope drainage experiment at the Coweeta Hydrologic Lab (Invited) (538015)
Kevin J McGuire, Virginia Tech, Forest Resources and Environmental Conservation/Virginia Water Resources Research Center, Blacksburg, VA, United States, Raymond M. Lee, Pacific Northwest National Laboratory, Department of Atmospheric Sciences & Global Change, Richland, United States, Brian D Strahm, Virginia Tech, Forest Resources and Environmental Conservation, Blacksburg, VA, United States, Jennifer D Knoepp, USDA Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, United States, Ryan D. Stewart, Virginia Polytechnic Institute and State University, Crop and Soil Environmental Sciences, Blacksburg, VA, United States and Charles Rhett Jackson, University of Georgia, Athens, GA, United States
 
Multi-Site Modelling of Hydrological and Geochemical Fluxes Partitioning within the OZCAR French CZO Network: Towards Disentangling Climatic, Belowground and Land-use Drivers (540670)
Isabelle Braud1, Sylvain Kuppel1,2, Sandrine Anquetin3, Florence Habets4 and Jerome Gaillardet5, (1)IRSTEA Lyon, UR RiverLy, Villeurbanne Cedex, France, (2)Institut de Physique du Globe de Paris / CNRS, Paris, France, (3)Université Grenoble Alpes, IRD, CNRS, Grenoble-INP, IGE, Grenoble, France, (4)Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France, (5)Institute de Physique d Globe Paris, Paris, France
 
Watershed-scale Effects of Longleaf Pine Restoration on Water Yield and Carbon: A Paired Watershed and Modeling Approach (542703)
Devendra Man Amatya, US Forest Service Cordesville, Cordesville, SC, United States, Carl Trettin, USDA Forest Service Southern Research Station, Cordesville, SC, United States, Mohammad Daud Hamidi, Durham University, Department of Earth Sciences, Durham, United Kingdom and Zhaohua Dai, Michigan Technological Univ., School of Forest Resources and Environmental Sciences, Houghton, United States
 
Water Science Objectives and Water Budget Quantification in the SPRUCE Experiment (543151)
Stephen D Sebestyen1, Natalie Griffiths2, Paul J Hanson3, Jeff Warren3, Xiaoying Shi3, Daniel M Ricciuto3, Jiafu Mao3, Jake Graham4, Colleen M. Iversen5, Lianhong Gu2 and Randy Kolka6, (1)USDA Forest Service, Northern Research Station, Vallejo, CA, United States, (2)Oak Ridge National Laboratory, Oak Ridge, TN, United States, (3)Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, TN, United States, (4)Boise State University, Department of Geosciences, Boise, ID, United States, (5)Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, TN, United States, (6)USDA Forest Service Northern Research Station, Grand Rapids, MN, United States
 
The Fundamental Roles of Iron as a Mediator of Land-Water Interactions in Arctic Catchments (545541)
William B Bowden1, Rose Merin Cory2, David Emerson3, Anne E Giblin4, Elizabeth Herndon5, George W Kling6, Alexander B Michaud7 and Nicholas Record7, (1)University of Vermont, Burlington, VT, United States, (2)University of Michigan Ann Arbor, Earth and Environmental Sciences, Ann Arbor, MI, United States, (3)Bigelow Laboratory, West Boothbay Harbor, ME, United States, (4)Marine Biological Laboratory, Ecosystems Center, Woods Hole, MA, United States, (5)Kent State University, Kent, OH, United States, (6)University of Michigan, Ecology and Evolutionary Biology, Ann Arbor, MI, United States, (7)Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States
 
Long-term effects of forest harvesting on summer mean daily flow in the Oregon Coast Range: Alsea Watershed Study Revisited (546242)
Catalina Segura, Oregon State University, Forest Engineering, Resources, and Management; Water Resources Graduate Program, Corvallis, OR, United States, Kevin D. Bladon, Oregon State University, Forest Engineering, Resources, and Management, Corvallis, OR, United States, Jeff A Hatten, Oregon State University, Corvallis, OR, United States, Julia A Jones, Oregon State University, Geography, Corvallis, OR, United States, Cody Hale, Nutter & Associates, Athens, GA, United States and Jeffrey McDonnell, University of Saskatchewan, Global Institute for Water Security, Saskatoon, SK, Canada
 
 
Evidence for accelerated climate-driven weathering and sulfate export in high alpine environments (555604)
John T Crawford, CU-Boulder, Boulder, CO, United States, Eve-Lyn S Hinckley, University of Colorado at Boulder, INSTAAR and Dept. of Environmental Studies, Boulder, CO, United States, Jason Caufield Neff, University of Colorado at Boulder, Sustainability Innovation Lab at Colorado, Boulder, CO, United States, Janice Brahney, Utah State University, Department of Watershed Sciences, Logan, UT, United States and Iggy Litaor, Tel-Hai Academic College, Upper Galilee, Israel
 
Early Warning of Global Change Effects on Catchment Nutrient Exports (582400)
Irena F Creed, University of Saskatchewan, School of Environment and Sustainability, Saskatoon, SK, Canada, Haibin Dong, University of Western Ontario, London, Canada, David A. Aldred, University of Western Ontario, London, ON, Canada and Mark Scheuerell, University of Washington, Aquatic and Fishery Sciences, Seattle, United States
 
Performance of a fen peatland constructed on post-oil sands mined landscape: 2013-2018 (582902)
Jonathan S Price1, Richard M Petrone2, Maria Strack1 and David J Cooper3, (1)University of Waterloo, Waterloo, ON, Canada, (2)University of Waterloo, Geography and Environmental Management, Waterloo, ON, Canada, (3)Colorado State University, Fort Collins, CO, United States
 
Long-term trends in dissolved organic matter from fluvial systems across biomes (583245)
Bianca Rodriguez-Cardona, University of New Hampshire Main Campus, Durham, NH, United States, Adam Wymore, University of California Berkeley, Berkeley, CA, United States, Alba Argerich, Oregon State University, Department of Forest Engineering, Resources, and Management, Corvallis, OR, United States, Sherri L Johnson, US Forest Service, Corvallis, OR, United States, Pirkko Kortelainen, Finnish Environment Institute, Helsinki, Finland, Walter K Dodds, Kansas State University, Manhattan, KS, United States, Jeremy Jones, University of Alaska Fairbanks, Fairbanks, AK, United States and William H McDowell, University of New Hampshire, Durham, NH, United States
 
 
Evolution of Stormflow Thresholds in Long-Term Instrumented Catchments (587699)
Charles I Scaife, University of Virginia, Charlottesville, VA, United States, Nitin Singh, North Carolina State Univsity, Raleigh, NC, United States, Ryan E Emanuel, NC State University, Raleigh, NC, United States, Chelcy Miniat, USDA Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, United States and Lawrence E Band, University of Virginia, Engineering Systems and Environment, Charlottesville, VA, United States
 
Temporal Variations in Soil Moisture Profiles with Varying Landscape Positions in a Small Forested Watershed in the Southeastern United States with Implications for Flowpaths, Recharge, and Evapotranspiration (601145)
Brent T Aulenbach, USGS South Atlantic Water Science Center, Norcross, GA, United States and Jeffrey W Riley, USGS, Norcross, GA, United States
 
Stream chemistry responses to anomalous warming in a high-elevation mountain watershed: Coal Creek and the upper East River, Colorado (602890)
Kenneth Hurst Williams, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Li Li, Pennsylvania State University Main Campus, University Park, PA, United States, Wei Zhi, Pennsylvania State University Main Campus, Department of Energy and Mineral Engineering, University Park, PA, United States, Wendy Brown, Rocky Mountain Biological Laboratory, Gothic, United States, Rosemary W H Carroll, Desert Research Institute Reno, Reno, NV, United States and Wenming Dong, Lawrence Berkeley National Lab, Earth and Environmental Sciences Area, Berkeley, CA, United States
 
Streamflow Chloride Concentration Trends in the Dorset Catchments, ON Canada, and Efforts to Harness High-Frequency Specific Conductivity-Chloride Monitoring for Event Chloride Load and Flowpath Investigations (604295)
April Lynda James1, Huaxia Yao2, Chris McConnell2, Tim Field1, Kim Montgomery1, Claire Oswald3 and Carl P J Mitchell4, (1)Nipissing University, Department of Geography, North Bay, ON, Canada, (2)Ontario Ministry of Environment, Conservation and Parks, Dorset Environmental Science Centre, Dorset, ON, Canada, (3)Ryerson University, Department of Geography and Environmental Studies, Toronto, ON, Canada, (4)University of Toronto, Physical and Environmental Sciences, Toronto, ON, Canada
 
Critical Zone Measurements: Development of Novel Experimental Deployments to Further Our Understanding of Hydrological Processes (606152)
Brandon Forsythe1, Jeremy Harper1, Susan Brantley2, John M Regan3, Caitlin Anne Hodges4, Jason P Kaye5 and Andrew Nyblade6, (1)Pennsylvania State University Main Campus, University Park, PA, United States, (2)Pennsylvania State University, Earth and Environmental Systems Institute, University Park, PA, United States, (3)Pennsylvania State University, Environmental Engineering, University Park, PA, United States, (4)University of Georgia, Athens, GA, United States, (5)Department of Ecosystem Science and Management, State College, PA, United States, (6)Pennsylvania State University Main Campus, Department of Geosciences, University Park, PA, United States
 
Long-Term Monitoring Reveals Isotopic Shifts Associated with Decreasing Atmospheric Sulfate and Nitrate Deposition, Northeastern USA (607455)
John Karl Bohlke, Stanley J Mroczkowski and Janet E Hannon, USGS Headquarters, Water Mission Area, 431 National Center, Reston, VA, United States
 
Long-term monitoring in the UK River Thames Catchment: 150 years of land use and water quality (612572)
Nicholas J K Howden, University of Bristol, Bristol, BS8, United Kingdom, Tim Burt, University of Durham, Durham, United Kingdom, Fred Worrall, Durham University, Durham, United Kingdom, Francesca Pianosi, University of Bristol, Civil Engineering, Bristol, United Kingdom and Helen P Jarvie, Centre for Ecology and Hydrology, Wallingford, Oxfordshire, United Kingdom
 
Fuel treatment effects on forest mortality resistance and water yield during drought (613410)
Ryan R Bart, University of California Merced, Sierra Nevada Research Institute, Merced, CA, United States, Mohammad Safeeq, University of California Merced, Civil and Environmental Engineering, Merced, CA, United States, Joseph Wagenbrenner, US Forest Service, Albany, CA, United States and Carolyn T Hunsaker, USDA Forest Service, Vallejo, CA, United States
 
Greater than the sum of the parts: collaboration in and beyond the U.S. LTER Network (615600)
Marty Downs, LTER Network, Santa Barbara, CA, United States and Frank W Davis, University of California, Santa Barbara, CA, United States
 
Impacts of timber harvest treatments on stream biogeochemistry in a northern California redwood forest (617612)
Seanna G McLaughlin1, Helen E Dahlke1 and Randy A Dahlgren2, (1)University of California Davis, Davis, CA, United States, (2)Univ California Davis, Davis, CA, United States
 
Characterization of Site-Specific Alaskan Tundra Vegetation Activity as Driven by Climate and Soil Conditions (619168)
Michael Gregory Brown1, Kyle C. McDonald Dr.2, Reiner Zimmermann3, Nick Steiner4, Stephanie L Devries4 and Laura L Bourgeau-Chavez5, (1)CUNY City College of New York, New York, NY, United States, (2)CUNY City College of New York. NY, USA, Department Chair of Earth and Atmospheric Sciences, New York, NY, United States, (3)Hohenheim University, Stuttgart, Germany, Forest Ecology and Remote Sensing Group, Institute of Botany, Stuttgart, Germany, (4)City College of New York, New York. NY, USA, Department of Earth and Atmospheric Sciences, New York, NY, United States, (5)Michigan Technological University, MI, USA, Michigan Tech Research Institute, Ann Arbor, MI, United States
 
Scaling up DOM dynamics from the small catchment to a mesoscale basin (621525)
James B Shanley, USGS, Montpelier, VT, United States, Peter A Raymond, Yale University, New Haven, CT, United States, Kevin A Ryan, Northeastern University, Boston, MA, United States, Ann Chalmers, USGS New Hampshire/Vermont Water Science Center, Pembroke, NH, United States, Aron Stubbins, Northeastern University, Departments of Marine and Environmental Sciences, Chemistry and Chemical Biology, and Civil and Environmental Engineering, Boston, MA, United States, Sasha Wagner, Rensselaer Polytechnic Institute, Department of Earth and Environmental Sciences, Troy, NY, United States and Jennifer Fair, USGS, Amherst, MA, United States
 
Hydrologic Connectivity and Nitrogen Export in Forested Headwater Catchments (625802)
Emily Kathleen Kerstetter, Pennsylvania State University Main Campus, University Park, PA, United States, Jonathan M Duncan, Pennsylvania State University Main Campus, Ecosystem Science and Management, University Park, PA, United States and Elizabeth W Boyer, Pennsylvania State University, State College, PA, United States
 
The Soil and Critical Zone Clay Factory: How Rock Weathers to Clay and Clay-Sized Minerals (631903)
Daniel deB. Richter Jr, Duke University, Nicholas School of the Environment, Durham, NC, United States
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