Seventh Symposium
on the Biogeochemistry of Wetlands
Complete Program
HOST SPONSOR:
Duke University
Wetland Center
Nicholas School of the Environment and Earth Sciences
Duke University
Durham, North Carolina USA
www.env.duke.edu/wetland
Telephone: 919.613-8009, Fax: 919.613-8101
FINANCIAL SPONSORS:
North Carolina
Wetlands Restoration Program,
Division of Water
Quality,
NC Department of Environment
and Natural Resources
Society of Wetland Scientists
Water Resources
Research Institute,
University of North
Carolina
CO-SPONSORS:
Wetland Biogeochemistry
Laboratory,
The University of
Florida
The Wetland
Biogeochemistry Institute,
Louisiana State University
Marine Laboratory,
Duke University
Letter from the Symposium Chair
I would like to take this opportunity to welcome you to the Seventh International Symposium on the Biogeochemistry of Wetlands sponsored by the Duke University Wetland Center in the Nicholas School of the Environment and Earth Sciences. Additional sponsors include the North Carolina Wetlands Restoration Program, the Society of Wetland Scientists, and the Water Resources Research Institute of the University of North Carolina. Symposium co-sponsors are the Wetlands Biogeochemistry Institute at Louisiana State University, the Wetland Biogeochemistry Laboratory at the University of Florida, and the Duke University Marine Laboratory.
During the past two decades, there has been an increased interest in the role that wetlands play in the biogeochemical cycles of elements such as carbon, nitrogen, phosphorus, and sulfur. It is now clear that wetlands play a key role in the carbon cycle of the globe as well as having major influence on the storage, release, and transformations of nutrients and metals. Attendance and participation at the six previous symposia clearly indicate a worldwide interest in the biogeochemistry of wetlands. During the Seventh Symposium a total of four major symposia and three plenary sessions, along with 79 submitted oral presentations and 15 posters, will be presented over 3 days. The symposium contributors represent 14 countries.
Scientific Sessions: The scientific sessions will be held in the Fuqua School of Business, immediately adjacent to the R. David Thomas Center. Plenary sessions will be held on June 18, 19, and 20, 2001 in Geneen Auditorium. Geneen Auditorium is also the location for the four special symposia. A total of eight concurrent sessions will be held in Classrooms E and F during the Seventh Symposium. Poster papers will be on display throughout the conference in the Fuqua School Concourse. Authors of poster papers will be present at their posters from 5:45 P.M. until 7:00 P.M. on Tuesday evening. Slide, overhead, and computer projectors will be available for the general and concurrent sessions.
Other Activities: There will be a welcome reception for registered symposium participants at the Fuqua School Faculty Lounge Sunday evening from 5:00 to 7:00 P.M. There will also be a banquet dinner Monday night in the R. David Thomas Center Executive Dining Room from 6:45 to 9:30 P.M. On Wednesday afternoon, conference participants who have pre-registered for the optional field trip will gather in Geneen Auditorium prior to departure. All conference attendees are welcome to my pre-trip talk "Wetlands of Coastal North Carolina: An Overview of Pocosins, Carolina Bays, Bottomlands, and Salt Marshes" at 12:00 noon in Geneen Auditorium.
I extend special thanks to our sponsors and cooperators. I would like to thank all the speakers and poster presenters for supporting the Seventh Symposium. The work on conference arrangements by the staffs of the Duke University Wetland Center and the R. David Thomas Center is gratefully acknowledged, especially that of Lisa Blumenthal Rattray and Randy Neighbarger. Thanks are also extended to the session moderators and the graduate students who have worked hard to make this symposium a success.
Curtis J. Richardson
Director, Duke University Wetland Center
June 17, 2001
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The Seventh International Symposium on the Biogeochemistry of Wetlands
Program Agenda |
Seventh International Symposium on the Biogeochemistry of Wetlands
The Seventh International
Symposium on the Biogeochemistry
of Wetlands
Duke University Wetland
Center
Durham, NC USA
June 17-20, 2001
Sunday, June 17, 2001 _
|
2:00-8:00 pm |
Registration |
Fuqua School Concourse |
|
3:00-5:00 pm |
Poster Set-up |
Fuqua School Concourse |
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4:00-6:00 pm |
Audio-Visual Preparation |
Geneen Auditorium |
|
5:00-7:00 pm |
Welcome Reception |
Fuqua School Faculty Lounge |
Monday, June 18, 2001 _
|
Plenary Session I Geneen Auditorium |
|
|
8:15 am |
Introduction Curtis J. Richardson Director, Duke University Wetland Center |
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8:25 am |
Remarks Peter Lange Provost, Duke University |
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8:35 am |
Remarks Norman Christensen Dean, Nicholas School of the Environment and Earth Sciences, Duke University |
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8:45 am |
Keynote Address William H. Schlesinger Dean-Elect, Nicholas School of the Environment and Earth Sciences, James B. Duke Professor of Biogeochemistry, Department of Biology, Duke University "Climate change, wetlands and the global carbon cycle" |
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Special Symposium 1, Part I "Carbon cycling and sequestration in wetlands" Chair: Scott Bridgham, University of Notre Dame Geneen Auditorium |
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9:30 am |
Carbon cycling and dissolved organic matter export in the Everglades Robert G. Qualls, University of Nevada Curtis J. Richardson, Duke University |
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9:55 am |
Environmental Controls of Organic Carbon Accumulation in Freshwater Wetlands Christopher Craft, Indiana University |
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Break, Fuqua School Faculty Lounge |
|
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10:45 am |
Nutritional limitations on aboveground net primary productivity in floodplain forests Graeme Lockaby and E.B. Schilling, Auburn University |
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11:10 am |
The carbon balance in managed wetland forests Carl Trettin, USDA Forest Service; K. Minkkinen and J. Laine, University of Helskinki; M.F. Jurgensen, Michigan Technological University |
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11:35 am |
The effect of peatland drainage, harvesting and restoration on C cycling in ombrotrophic bogs, eastern Canada Tom Moore, Stephan Glatzel, Mike Dalva, Michele Marinier, Nigel Roulet and Julian Cleary, McGill University |
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12:00 noon |
Response of a woody plant-soil system to elevated CO2 and flooding: Carbon allocation to production and methanogenesis Patrick Megonigal, Smithsonian Environmental Research Center; Cheryl Vann, George Mason University |
|
12:25 pm |
The impact of dissimilatory sulfate reduction rates on production of CO2 and CH4 in sphagnum-dominated peatlands: A global comparison across an atmospheric sulfur deposition gradient Melanie A. Vile and Scott Bridgham, University of Notre Dame; R. Kelman Wieder, Villanova University; Martin Novák, Czech Geological Survey |
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1:15-2:15 pm |
Lunch R. David Thomas Center Executive Dining Room |
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Special Symposium 1, Part II "Carbon cycling and sequestration in wetlands" Chair: Scott Bridgham, University of Notre Dame Geneen Auditorium |
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2:30 pm |
Organic chemical control of methane biogeochemistry in northern peatlands Joseph B. Yavitt, Cornell University |
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2:55 pm |
The carbon balance of bogs and fens in a manipulative climate change experiment Scott Bridgham and Jason Keller, University of Notre Dame; Jake Weltzin, University of Tennessee; John Pastor, Karen Updegraff, Brad Dewey, and Cal Harth, University of Minnesota; Jiquan Chen, Michigan Technological University |
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3:20 pm |
Potential effects of climate forcing on methane cycling in northern peatlands: Stable isotopic evidence from mesocosms and natural sites Jeffrey R. White, Indiana University; Robert Shannon, Pennsylvania State University; Scott Bridgham, University of Notre Dame; John Pastor, University of Minnesota |
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3:45 pm |
Preliminary regional carbon budget for the peatland region of Boreal, Continental, Western Canada R. Kelman Wieder, Villanova University; Linda Halsey and Merritt Turetsky, University of Alberta; Dale Vitt, Southern Illinois University |
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Break, Fuqua School Faculty Lounge |
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4:40 pm |
Modeling short term and long term carbon accumulation in northern peatlands Steve Frolking, and Patrick Crill, University of New Hampshire; Nigel Roulet and Tim Moore, McGill University; Pierre Richard, Université de Montréal; Jill Bubier, Mount Holyoke College; Peter Lafleur, Trent University |
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5:05 pm |
Carbon exchange in a northern bog Nigel T. Roulet, Tim Moore, Colin Fraser, and Adam Reimer, McGill University; Peter Lafleur and Stuart Admiral, Trent University; Pierre Richard Université de Montréal; Steve Frolking, University of New Hampshire; Jill Bubier, Mount Holyoke College |
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5:30 pm |
Plant community dynamics, nutrient cycling, and multiple stable equilibria in peatlands John Pastor and Bruce Peckham, University of Minnesota; Scott Bridgham, University of Notre Dame; Jake Weltzin, University of Tenneesee; Jiquan Chen, Michigan Technological University |
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Concurrent Session 1 "Coastal Systems" Moderator: P.V. Sundareshwar, Duke University Classroom E |
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2:45 pm |
Source water variability within mangrove-dominated ecosystems of Micronesia Judy Z. Drexler, USDA Forest Service; Eric De Carlo, University of Hawaii |
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3:05 pm |
The impact of metalliferous mining on saltmarsh flora Christian Smillie and Loveday E.T. Jenkin, University of Exeter |
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3:25 pm |
Coastal salt barren as indicator to recent sea level change and wetland carbon dynamics Yuch Ping Hsieh, Florida A&M University |
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3:45 pm |
Effects of parasitic plants on sediment biogeochemistry in California salt marshes Brenda J. Grewell, University of California, Davis |
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Break, Fuqua School Faculty Lounge |
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4:40 pm |
Sea level rise and carbon sequestration in coastal wetlands Yang Wang and Yonghoon Choi, Florida State University; Yuch-Ping Hsieh and Larry Robinson, Florida A&M University; Peng Gong, University of California, Berkeley |
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5:00 pm |
Diatom indicators of salinity in Florida Bay, USA Jacqueline Huvane, Duke University |
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Concurrent Session 2 "Plant Communities" Moderator: Graeme Lockaby, Duke University Classroom F |
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2:45 pm |
Growth and physiological responses of Typha. domingensis and Cladium jamaicense to low phosphorus and oxygen availability Bent Lorenzen and Hans Brix, University of Aarhus |
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3:05 pm |
Spatial dependency of vegetation-environment relationships in an anthropogenically influenced wetland landscape Ryan King, Curtis J. Richardson, and Dean L. Urban Duke University
|
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3:25 pm |
Effects of hydrology and phosphorus enrichment on regrowth of sawgrass (Cladium jamaicense) and cattail (Typha domingensis) after leaf removal ShiLi Miao, South Florida Water Management District |
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3:45 pm |
Plant species richness and phosphorus heterogeneity: an experimental approach Carmen Chapin and Barbara Bedford, Cornell University |
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6:45-9:30 pm |
Special Banquet Dinner R. David Thomas Center Executive Dining Room |
Tuesday, June 19, 2001
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Plenary Session II Geneen Auditorium |
|
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8:30 am |
Hans W. Paerl Kenan Professor of Marine and Environmental Sciences Institute of Marine Sciences, University of North Carolina at Chapel Hill "Natural v. anthropogenic ‘new’ nitrogen inputs to coastal systems in the 21st century: Evolving sources, scales and consequences" Hans W. Paerl, David R. Whitall, Benjamin Peierls and Michael F. Piehler |
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Special Symposium 2 "Biogeochemistry of estuarine systems" Chair: James T. Morris, University of South Carolina Geneen Auditorium |
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9:30 am |
Phosphorus dynamics in coastal wetlands P.V. Sundareshwar, Duke University |
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10:00 am |
Sulfur, iron and phosphorus dynamics in carbonate soils of south Florida wetlands Randy Chambers, College of William and Mary; Dana Madeux and Toru Endo, Fairfield University |
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Break, Fuqua School Faculty Lounge |
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11:00 pm |
Denitrification rates in tidal wetlands: Applying a direct N2 flux technique Jeffrey Cornwell, Kevin Groszkowski, Erik Haberkern, Jennifer Merrill, Michael Owens, Lora Pride and Todd Kana, University of Maryland |
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11:30 pm |
Patterns of nutrient biogeochemistry in mangrove wetlands along Florida coastal Everglades Robert R. Twilley, University of Louisiana at Lafayette |
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12:00 noon |
Effects of sea level anomalies on biogeochemical processes in coastal wetlands James T. Morris, University of South Carolina |
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Concurrent Session 3 "Water quality modeling and nutrient status" Moderator: Neal Flanagan, Duke University Classroom E |
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9:30 am |
Developing nutrient criteria for wetland systems Ifeyinwa Davis, US Environmental Protection Agency |
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9:50 am |
Nutrient export from a natural forested wetland on the North Carolina coastal plain G.M. Chescheir, D. M. Amatya, R. W. Skaggs, and J. W. Gilliam, North Carolina State University |
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10:10 am |
Using decision tree models to target wetland restoration sites for watershed-level water quality improvement Neal Flanagan and Curtis J. Richardson, Duke University |
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Break, Fuqua School Faculty Lounge |
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11:00 am |
Effects of agriculture and wetland restoration on hydrology, soils, and water quality of a Carolina bay complex Gregory L. Bruland, Matthew F. Hanchey, and Curtis J. Richardson , Duke University |
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11:20 am |
Modeling of biogeochemical processes in subsurface flow constructed wetlands Guenter Langergraber and Raimund Haberl, University of Agricultural Sciences, Vienna |
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Concurrent Session 4 "Nitrogen dynamics and cycling, Part I" Moderator: R. Kelman Wieder, Villanova University Classroom F
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9:30 am |
Delta 15N as an indicator of N2-fixation by cyanobacterial mats Eliska Rejmánková, University of California, Davis Jaroslava Komárková , University of South Bohemia |
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9:50 am |
Nitrate removal and denitrification in a stream riparian zone K. Dhondt, P. Boeckx, O.Van Cleemput, G. Hofman, and F. De Troch , Ghent University |
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10:10 am |
Regulation of surface water quality in a Chalk catchment, UK: An assessment of the relative importance of instream and wetland processes. Hannah Prior, University of Reading |
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Break, Fuqua School Faculty Lounge |
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11:00 am |
Tidal simulation chambers for the investigation of nutrient transformation processes and gaseous emissions in intertidal zones Martin S.A. Blackwell and Edward Maltby, Royal Holloway Institute for Environmental Research |
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11:20 am |
Modeling organic nitrogen uptake by plant and microbial communities in temperate wetlands Virginia L. Jin and Rebecca R. Sharitz, University of Georgia |
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11:40 am |
Nutrient cycling dynamics after hydrological disturbance in boreal peatlands Raija Laiho, Harri Vasander, and Jukka Laine, University of Helsinki; Tapani Sallantaus, Pirkanmaa Regional Environment Centre |
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1:15-2:15 pm |
Lunch R. David Thomas Center Executive Dining Room
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Special Symposium 3 "Biogeochemical indicators of change in wetlands" Chair: K. Ramesh Reddy, University of Florida Geneen Auditorium |
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2:30 pm |
Biogeochemical fingerprinting of wetland sites as a basis for assessment of nutrient-related functions J.T.A. Verhoeven, Utrecht University |
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3:00 pm |
Biogeochemical indicators of nutrient responses across the Everglades landscape Susan Newman, South Florida Water Management District K. Ramesh Reddy, University of Florida |
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3:30 pm |
Direct and indirect effects of vegetation patterns on biogeochemical processes in emergent wetlands William G. Crumpton, Iowa State University |
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Break, Fuqua School Faculty Lounge |
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4:30 pm |
Indicators of biogeochemical functioning – progress in development of procedures for European wetland ecosystems Edward Maltby, Royal Holloway Institute for Environmental Research |
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5:00 pm |
A Comparison of physiological bioindicators of sublethal stress in wetland plants James W. Pahl, Irving A. Mendelssohn, and Tao Kong, Louisiana State University; Karen L. McKee, USGS |
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5:30 pm |
Analysis of the composition of microbial communities along nutrient gradients in impacted wetlands Andrew Ogram, University of Florida |
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Concurrent Session 5 "Metals and Pollutants" Moderator: Jan Vymazal, Ecology and Use of Wetlands Classroom E |
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2:30 pm |
Wetland plant and fertilization effects on the sediment chemistry of lead-zinc mine tailings Donna Jacob and Marinus Otte, University College, Dublin |
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2:50 pm |
Biogeochemical dynamics of trace-metals in wetland sediments; simulations and measurements Peter R. Jaffe, Jung-Hyun Choi, and Shangping Xu, Princeton University |
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3:10 pm |
Distribution of heavy metals in a constructed wetland receiving municipal sewage Jan Vymazal, Ecology and Use of Wetlands, Czech Republic |
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3:30 pm |
Wheal Jane: Modelling bioremediation of acid mine drainage in constructed ecosystems Paul Whitehead and Hannah Prior, University of Reading, United Kingdom; Jack Cosby, University of Virginia |
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Break, Fuqua School Faculty Lounge |
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4:30 pm |
Oxygen constraints on phenol oxidase: Implications for peatland nutrient cycling Chris Freeman, Hojeong Kang and Nick Ostle, University of Wales |
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Concurrent Session 6 "Nitrogen dynamics and cycling, Part II" Moderator: Christopher Craft, Indiana University Classroom F
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2:30 pm |
Effects of drawdowns on water and soil chemistry in a managed wetland M. M. Fisher, K. J. Ponzio, L.W. Keenan, and K. Snyder, St. Johns River Water Management District; S.V. Rockwood and J. Albury, Florida Fish and Wildlife Conservation Commission |
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2:50 pm |
The role of wetland substrate in maximizing nitrate removal from swine wastewater Michael R. Burchell II, R.W. Skaggs, and S. Broome, North Carolina State University; C.R. Lee, USACE–Engineering Research and Development Center |
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3:10 pm |
Monitoring of denitrification in a constructed wetland receiving agricultural runoff Amy C. Poe, Suzanne P. Thompson, Michael F. Piehler, and Hans W. Paerl,University of North Carolina at Chapel Hill |
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3:30 pm |
Combined heterotrophic and autotrophic denitrification in constructed wetlands used for polishing municipal effluent Roland Wass, Shaila Nahar, and Peter Fox, Arizona State University |
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Break, Fuqua School Faculty Lounge |
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4:30 pm |
Enhancement of nitrate removal in treatment wetlands using an episediment layer for denitrification Maia S. Fleming-Singer and Alexander Horne, University of California, Berkeley |
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4:50 pm |
Decomposition and N dynamics in riparian buffer zones along a climatic gradient Mariet Hefting and Jos Verhoeven, Utrecht University; Piotr Bieñkowski, Polish Academy of Sciences; Jean-Christophe Clement, Université de Rennes; David Dowrick, University of Durham; Claire Guenat, Ecole Polytechnique Fédérale de Lausanne; Ester Nin, University of Barcelona; Sorana Topa, University of Bucharest |
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5:45-7:00 pm |
Poster Session Fuqua School of Business Concourse
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Wednesday, June 20, 2001
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Plenary Session III Geneen Auditorium |
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8:30 am |
R. Wayne Skaggs William Neal Reynolds and Distinguished University Professor Department of Biological and Agricultural Engineering, North Carolina Sate University "The hydrology of wetlands: Factors affecting water table fluctuations in hydric soils" R. Wayne Skaggs, G. M. Chescheir and W. F. Hunt, III |
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Special Symposium 4 "Hydric soils and biogeochemical indicators" Chair: Michael J. Vepraskas, North Carolina State University Geneen Auditorium |
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9:30 am |
Applications of biogeochemistry to hydric soil identification Michael J. Vepraskas, North Carolina State University |
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10:00 am |
Kinetics of nitrous oxide and methane production in relation to soil redox potential and mitigation of their emissions from irrigated rice fields Kewei Yu and William H. Patrick, Jr., Louisiana State University; Guanxiong Chen, Chinese Academy of Sciences |
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Break, Fuqua School Faculty Lounge |
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10:50 am |
The effects of additions of available C and P on Eh and pH in an Everglades histosol Paul Benzing and Curtis J. Richardson, Duke University |
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11:20 am |
Enumeration of Fe-oxidizing and Fe-reducing bacteria in the wetland plant rhizosphere: Implications for a rhizosphere Fe cycle Johanna V. Weiss and Stephanie Backer, George Mason University: J. Patrick Megonigal, SERC; David Emerson, American Type Culture Collection
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"Carbon dynamics and cycling" Moderator: R.G. Qualls, University of Nevada Classroom E |
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9:30 am |
Controls of organic matter characteristics on the dynamics of CO2 and CH4 in a northern peatland Charlotte L. Roehm and Nigel T. Roulet, McGill University |
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9:50 am |
Centimeter-scale Dynamics of Carbon Mineralization in Peatland Soils after Flooding and Drying Events Christian Blodau, and Tim Moore McGill University, |
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10:10 am |
Temporal variation in the responses of peatland carbon cycling to temperature Nathalie Fenner and Christopher Freeman, University of Wales, Bangor; Brian Reynolds, Center for Hydrology and Ecology, Bangor |
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Break, Fuqua School Faculty Lounge |
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10:50 am |
Permafrost thaw increases peat accumulation: The role of mosses and microbes Merritt R. Turetsky, University of Alberta |
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11:10 am |
Zymogenic bacteria: Are they predictors of CH4 production potential in flooded rice fields and natural wetlands? A.X. Hou, W.H. Patrick, Jr., and R.J. Portier, Louisiana State University |
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11:30 am |
Profiling of complex microbial communities in a boreal, continental, western Canadian peatland John A. Navaratnam and R. Kelman Wieder, Villanova University |
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11:50 am |
Decomposition of cattail litter under different water regimes Robin L. Miller and Roger Fujii, United States Geological Survey |
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12:10 pm |
Carbon source limitation in a wetland treating acid rock drainage James Harrington, Shepherd Miller, Inc. |
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"Phosphorus cycling and transformations" Moderator: Mark R. Walbridge, George Mason University Classroom F |
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9:30 am |
Phosphorus retention in forested riparian wetlands of the Southeastern United States Mark R. Walbridge, Arlene K. Darke, Rebecca B. Wright, and Dianna M. Hogan, George Mason University; Josephine R. Axt, U.S. Army Corps of Engineers |
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9:50 am |
Characterization of phosphorus cycling and speciation in the northern Florida Everglades by high resolution mass spectrometry William T. Cooper, William M. Landing, Vincent J.M. Salters and Yang Wang, Florida State University |
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10:10 am |
Phosphorus cycling and partitioning in oligotrophic and enriched Everglades wetland ecosystems Gregory Noe, Leonard Scinto, Daniel Childers, and Ronald Jones, Florida International University |
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Break, Fuqua School Faculty Lounge |
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10:50 am |
Enzymatic hydrolysis of organic phosphorus in the surface water of the Everglades Stormwater Treatment Areas Hari K. Pant and K. R. Reddy, University of Florida; F.E. Dierberg and T.A. DeBusk, DB Environmental Laboratory, Inc. |
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11:10 am |
Predicting bioavailability of phosphorus to cattail and sawgrass in Everglades soils Matthew F. Hanchey and Curtis J. Richardson, Duke University |
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11:30 am |
Diatom species composition as predictor of soil phosphorus concentrations in the Everglades - A Bayesian hierarchical modeling approach Song S. Qian, The Cadmus Group; Yangdong Pan, Portland State University |
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11:50 am |
Preliminary comparison of water quality trends in Stormwater Treatment Areas (STA-1W and STA-6) with the Everglades Protection Area Jana Majer Newman, Tammy Lynch, and Susan Newman, South Florida Water Management District |
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12:00 noon |
Special Field Trip Presentation "Wetlands of Coastal North Carolina: An Overview of Pocosins, Carolina Bays, Bottomlands, and Salt Marshes" Curtis J. Richardson, Duke University Geneen Auditorium (open to all participants) |
