The
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Spring Term 2020 Lecture Co-sponsored by DUWC and the Student Association of Wetland Scientists, Duke Chapter
Professor, Department of Plant Sciences. Director, Peatland Ecology Research Group (PERG) Université Laval, Québec,
Canada Managing
Degraded Peatland Ecosystems for C Sequestration and Biodiversity ABSTRACT:
In the past 25 years, I
have been quite active in developing methods to restore degraded Sphagnum
bogs by re-wetting and revegetation. Our main whole-ecosystem research
station (since 1999) reveals that a peatland degraded by peat extraction now
has a mean net ecosystem uptake of 78 ± 17 g C m-2
year-1. More than 100 restoration projects across Canada informs us that
within a decade or so, 80% of former biodiversity is re-established. From
another angle of research, we are led to believe
that it could be possible, through management, to reduce, partially, peat C
emissions. I will present a study designed to evaluate the potential of
phenolic enrichment as a geoengineering strategy to reduce decomposition in
Sphagnum farm. - Line Rochefort Thursday, February 27, 2020, 3:00 P.M. Levine Science Research Center Room A158 Duke University West Campus Dr. Line Rochefort is a
pioneer in peatland restoration research.
She founded the Peatland Ecology Research Group (PERG) in 1992 to
bring together university researchers, industrial partners, and federal and
provincial government agencies to ensure integrated and sustainable
management of Canadian peatlands. She is also active in the rebuilding of
wetlands in Alberta’s oil sands region. Her research addresses the need to
rehabilitate ecosystems that will capture atmospheric carbon dioxide and
diminish greenhouse gas effects. Since 2003, Dr. Rochefort
has held the Natural Sciences and Engineering Research Council’s Industrial
Research Chair for Peatland Management. She received the Natural Science and
Engineering Research Council of Canada’s Synergy Award for Innovation in 2004
and the International Peatland Society’s Award of Excellence in 2011. The Wetland Center will host a reception for Dr. Rochefort
immediately following the lecture. |
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Past Speakers in the Distinguished Lecture Series |
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2017 Director, Scientific Technological Park & ENKI, o.p.s. Czech
Republic "Direct Thermodynamic
Effect of Wetlands on Climate"
John and Catherine Day Professor of Oceanography & Coastal Science Louisiana
State University "Can the Mississippi
River Help Save Vanishing Louisiana Coastal Wetlands?" |
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2016 Professor of Biology Baylor
University "Scenic Rivers,
Nuisance Algae, and Interstate Politics: The Oklahoma-Arkansas Joint
Phosphorus Study" Kate Ballantine, Ph.D. Assistant Professor of Environmental Studies Mount
Holyoke College "Long-term
Development and Ecosystem Functions of Restored Wetlands" |
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2015: The Duke University Wetland Center
25th Anniversary Year Glenn R. Guntenspergen, Ph.D. Research Ecologist USGS
Patuxent Wildlife Research Center "Is Coastal Wetland
Vulnerability to Sea Level Rise Overstated?" Donald R. Cahoon, Ph.D. Research Ecologist USGS
Patuxent Wildlife Research Center "Assessing Coastal Wetland
Vulnerability to Sea Level Rise" Sandra Postel Founder and Director Global Water
Policy Project "From Duke to Now: Reflections on a Career in Water" |
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2013 Jos T.A. Verhoeven , Ph.D. Professor of Ecology and Biodiversity Utrecht
University "Nitrogen Enrichment of Wetlands: Implications for Carbon
Sequestration" |
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2012 Edward Maltby, Ph.D. Emeritus Professor of Wetland Science, Water and
Ecosystem Management "Challenges of Linking Wetland Science to Policy in Europe" |
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2008 Patrick J. Mulholland , Ph.D. Aquatic Ecologist, Carbon & Nutrient
Biogeochemistry Grouop "Streams as Nitrogen Filters in the Landscape" |
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2007 Christopher Craft, Ph.D. Associate Professor, "Challenges of Restoring Wetlands in Natural, Agricultural
and Urban Landscapes" Pat Megonigal, Ph.D. Senior Scientist Smithsonian
Environmental "Priming the Microbial Pump: Enhanced Soil Organic Matter
Decomposition at Elevated CO2" |
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2006 Nigel T. Roulet, Ph.D. Director, James McGill Professor, Dept. of Geography McGill University, Montreal "
John W. Day, Jr., Ph.D. Distinguished Professor, Department of
Oceanography and Coastal Science "The Role of Wetlands in a Sustainable Human Society in a Post-Hurricane, Post-Modern World" |
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2005 Peter M. Groffman, Ph.D. Microbial Ecologists "Riparian Wetlands: A Crisis of Confidence and Connectance"
Jos T.A. Verhoeven, Ph.D. Professor of Landscape Ecology "Wetlands and Water Quality: A Landscape Perspective" |
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2003 Mark D. Bertness, Ph.D. Robert P. Brown Professor of Biology "Why Experimental Community Ecology Matters to Conservation Biology"
Joy B. Zedler, Ph.D. Professor of Botany and Aldo Leopold Chair in Restoration Ecology University of Wisconsin, Madison "Forecasting the Future of Wetland Diversity and Function" |
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2002 Edward Maltby, Ph.D. Director, Royal
Holloway Institute for Environmental Research "Wetland Ecosystem Management - an International Perspective" David Schindler, Ph.D. Killam
Memorial Professor of Ecology, "The Cumulative Effects of Climate Warming and Other Human Stresses on Freshwaters in the New Millenium" |
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2001 James T. Morris, Ph.D. Department
of Biological Sciences, "The Homeostatic Response of Coastal Wetlands to Rising Sea Level" Douglas Wilcox, Ph.D. Coastal
and Wetland Ecology Branch, "Predicting
the Response of |
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2000 Hans Brix, Ph.D. Department of Plant
Ecology, "Plant Adaptations to Growth in Wetland Soils: Gas Exchange, Root Aeration and Oxygen Release" Ed Maltby, Ph.D. Royal Halloway Institute for Environmental Research, "The Trans-boundary Challenges in Wetland Science and Management"
Arnold van der Valk, Ph.D. Department of
Botany, "How Well Can We Predict Vegetation Change in Wetlands?" |
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1999 Scott D. Bridgham, Ph.D. Dept. of Biological
Sciences, The "Climate
Change Effects on
William G. Crumpton, Ph.D. Department of
Botany, "Dynamics of Nitrate Loss in Emergent Wetlands: Wetlands as
Sinks for R.S. Clymo, Ph.D., Emeritus Professor "Carbon and Methane Dynamics of Peatlands" |
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1998 Bert Drake, Ph.D. Smithsonian
Environmental "Effects of Elevated CO2 on Plants and Ecosystem Processes in a Chesapeake
Bay Wetland and
Eville Gorham, Ph.D., Regent's Professor of Ecology and Botany Department of
Ecology, The "The
Role of and Likely Responses to Global Warming"
Robert G. Wetzel, Ph.D., Bishop Professor of Biology Department of
Biological Sciences, The "Coupling of Ozone Reductions to Regulation of Nutrient Cycling and Productivity of Freshwater Ecosystems"
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1997 Jeffrey C. Cornwell, Ph.D. The "Applications of Radioisotopes and Stable Isotopes in Marsh Biogeochemistry"
Charles T. Driscoll, Ph.D., Distinguished Professor of Civil and Environmental Engineering Department of Civil
and Environmental Engineering, "Are You MAD as a Hatter: The Environmental Chemistry of Mercury"
Paul Glaser, Ph.D. Limnological
"Hydrologic Drivers for Carbon Dynamics in Large Boreal Peatlands"
K. Ramesh Reddy, Ph.D. Soil and Water
Sciences Department, The "Biogeochemical Indicators to Evaluate Nutrient Impacts in Wetlands"
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1995 Mark Brinson, Ph.D. Department of
Biology, "Functional Assessments of Wetlands Using Hydrogeomorphic Principles" Donald Siegel, Ph.D. Department of Earth
Science, "The Hydrology of Wetlands: Paradigm Lost" R. Kelman Wieder, Ph.D. Biology Department,
"Peatland Ecosystems, Carbon Cycling and Climate Change: Insights from Comparative Studies along a Latitudinal Gradient" |
The
Distinguished Lecture Series:
Perspectives in Wetlands Research
