B31F:
Recent Trends in Atmospheric Deposition, Soils, and Biogeochemical Controls on Stream Chemistry Posters

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Session ID#: 13358

Session Description:
Many regions globally, including the eastern U.S., have experienced significant changes in atmospheric deposition; however the responses in streamwater chemistry have varied.  For example, soil properties differ from glaciated and unglaciated regions, where glaciated soils may be less-aged with lower clay content than unglaciated soils.  Glaciated soils have less capacity to retain sulfate therefore response to input flux appears to be more rapid.  Other biogeochemical factors that may influence watershed retention of atmospheric deposition are vegetation cover, annual temperature ranges, soil carbon and nitrogen content, and acid-base status.  In the Southeast United States, stream export of sulfate has remained unchanged, where as in the Northeast declines have been measured.  This session will highlight research that advances our understanding of the biogeochemical processes controlling stream chemistry in watersheds impacted by decades of atmospheric deposition, including sulfur, nitrogen and mercury.
Primary Convener:  John S Schwartz, University of Tennessee, Knoxville, TN, United States
Convener:  Charles T Driscoll, Syracuse University, Department of Civil and Environmental Engineering, Syracuse, NY, United States
Chairs:  John S Schwartz, University of Tennessee, Knoxville, TN, United States and Habibollah Fakhraei, Southern Illinois University Carbondale, Civil and Environmental Engineering, Carbondale, IL, United States
OSPA Liaison:  Jill Baron, US Geological Survey, Fort Collins, CO, United States

Cross-Listed:
  • H - Hydrology
Index Terms:

0469 Nitrogen cycling [BIOGEOSCIENCES]
0488 Sulfur cycling [BIOGEOSCIENCES]
1806 Chemistry of fresh water [HYDROLOGY]
1865 Soils [HYDROLOGY]

Abstracts Submitted to this Session:

N Budget and Topographic Controls on N2O in a Shale Watershed with High Atmospheric N Deposition (129084)
Julie N Weitzman, The Pennsylvania State University, Department of Ecosystem Science and Management, University Park, United States and Jason P Kaye, Pennsylvania State University, Department of Ecosystem Science and Management, University Park, PA, United States
Long-term Response of the Quantity and Quality Dissolved Organic Matter to Decreases in Acid Deposition in Adirondack, NY Lakes. (151475)
Charles T Driscoll, Syracuse University, Department of Civil and Environmental Engineering, Syracuse, NY, United States and Habibollah Fakhraei, Southern Illinois University Carbondale, Civil and Environmental Engineering, Carbondale, IL, United States
The Response of Stream and Soil Chemistry to Decreases in Acid Deposition in the Catskill Mountains, New York, USA (152063)
Michael R McHale, USGS, New York Water Science Center, Troy, United States, Douglas A Burns, University of Aberdeen, Aberdeen, United Kingdom, Jason Siemion, U.S. Geological Survey New York Water Science Center, Troy, United States and Michael R Antidormi, US Geological Survey, Troy, NY, United States
A Long-term Forest Fertilization Experiment to Understand Ecosystem Responses to Atmospheric Nitrogen Deposition (Invited) (152596)
Jill Baron1, Sanjay M Advani2, Jordan Allen2, Claudia M Boot2, Karolien Denef2, A Scott Denning3, Ed Hall4, John C Moore2, Heather Reuth5, Michael G Ryan2 and Elizabeth Shaw2, (1)US Geological Survey, John Wesley Powell Center for Analysis and Synthesis, Fort Collins, United States, (2)Colorado State University, Fort Collins, CO, United States, (3)Colorado State University, Department of Atmospheric Science, Fort Collins, CO, United States, (4)Colorado State University, Department of Ecosystem Science and Sustainability, Fort Collins, CO, United States, (5)Michigan Agricultural Conservation District, Grand Rapids, MI, United States
Contrasting Response of Forest Watersheds in Glaciated and Unglaciated Regions of the Eastern U.S. to Reductions in Acid Deposition (153795)
Habibollah Fakhraei, Southern Illinois University Carbondale, Civil and Environmental Engineering, Carbondale, IL, United States and Charles T Driscoll, Syracuse University, Department of Civil and Environmental Engineering, Syracuse, NY, United States
Wet acid deposition of Chinese natural and agricultural ecosystems: Evidence from national-scale monitoring (159388)
Haili Yu1, Nianpeng He1, Qiufeng Wang1, Jianxing Zhu2, Li Xu3, Zhilin Zhu4 and Guirui Yu5, (1)IGSNRR Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, China, (2)Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China, (3)CAS Chinese Academy of Sciences, Beijng, China, (4)Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing, China, (5)Key Laboratory of Ecosystem Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
A study of dissolved organic carbon and nitrate export in Catskill Mountain watersheds (163972)
Kyongho Son1,2, Karen E Moore2, Laurence Lin3, Elliot M Schneiderman2 and Lawrence E Band4, (1)CUNY Hunter College, New York, NY, United States, (2)New York City Department of Environmental Protection, Kingston, NY, United States, (3)University of North Carolina at Chapel Hill, Institute for the Environment, Chapel Hill, NC, United States, (4)University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
Deposition of acidifying species in the Waterberg region of South Africa and the potential for stream chemistry impacts (172838)
Stuart Piketh1, Christopher Curtis2, Kobus Pienaar1, Londiwe Khuzwayo2, Pieter G. van Zyl3 and Elné Conradie1, (1)North-West University, Unit for Environmental Science and Management, Potchefstroom, South Africa, (2)University of the Witwatersrand, School of Geography Archaeology and Environmental Science, Johannesburg, South Africa, (3)North-West University, Chemical Resource Beneficiation, Mahikeng, South Africa
Acid or N? Disentangling Nutrient- and pH Effects of Nitrogen and Sulfur Deposition to Forest Ecosystems (198234)
Christine L Goodale, Cornell University, Ecology and Evolutionary Biology, Ithaca, NY, United States

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