Previous work has shown that Prairie Pothole Region (PPR) wetlands are biogeochemical hotspots, with rapid turnover and transport rates of greenhouse gases (GHG). However, mechanisms controlling GHG fluxes are not well understood, leading to high uncertainty in model estimates of these processes. Additionally, unprecedented changes to land-use and cover in the PPR have potential to alter hydrology and water quality of wetlands, impacting biogeochemical processes. Management, restoration, and protection efforts require that information gaps on the controls of these processes be addressed to refine model estimates. The focus of this study is to 1) understand the abiotic and biotic factors that regulate GHG fluxes, 2) advance technology and methodologies for measuring GHG fluxes, and ultimately 3) develop spatially-explicit landscape-scale models of GHG fluxes from the PPR. In developing these models, we will be able to predict wetland responses to future changes in climate, hydrology, land use and land management. These results will be used to inform Department of Interior conservation and management strategies that reduce GHG emissions and facilitate GHG sequestration and storage.
Below are publications associated with this project.
Typha (cattail) invasion in North American wetlands: Biology, regional problems, impacts, ecosystem services, and management
Typha is an iconic wetland plant found worldwide. Hybridization and anthropogenic disturbances have resulted in large increases in Typha abundance in wetland ecosystems throughout North America at a cost to native floral and faunal biodiversity. As demonstrated by three regional case studies, Typha is capable of rapidly colonizing habitats and forming monodominant vegetation stands due to traits s
Authors
Sheel Bansal, Shane Lishawa, Sue Newman, Brian Tangen, Douglas Wilcox, Dennis Albert, Michael J. Anteau, Michael J Chimney, Ryann L. Cressey, Edward S. DeKeyser, Kenneth J Elgersam, Sarah A Finkelstein, Joanna Freeland, Richard Grosshans, Page E. Klug, Daniel J Larkin, Beth A. Lawrence, George Linz, Joy Marburger, Gregory B. Noe, Clint R.V. Otto, Nicholas Reo, Jennifer Richards, Curtis J. Richardson, LeRoy Rodgers, Amy J Shrank, Dan Svedarsky, Steven E. Travis, Nancy Tuchman, Arnold van der Valk, Lisamarie Windham-Myers
Hydrologic lag effects on wetland greenhouse gas fluxes
Hydrologic margins of wetlands are narrow, transient zones between inundated and dry areas. As water levels fluctuate, the dynamic hydrology at margins may impact wetland greenhouse gas (GHG) fluxes that are sensitive to soil saturation. The Prairie Pothole Region of North America consists of millions of seasonally-ponded wetlands that are ideal for studying hydrologic transition states. Using a l
Authors
Brian Tangen, Sheel Bansal
Terrestrial wetlands
1. The assessment of terrestrial wetland carbon stocks has improved greatly since the First State of the Carbon Cycle Report (CCSP 2007) because of recent national inventories and the development of a U.S. soils database. Terrestrial wetlands in North America encompass an estimated 2.2 million km2, which constitutes about 37% of the global wetland area, with a soil and vegetation carbon pool of ab
Authors
Randall Kolka, Carl Trettin, Wenwu Tang, Ken W. Krauss, Sheel Bansal, Judith Z. Drexler, Kimberly P. Wickland, Rodney A. Chimner, Dianna M. Hogan, Emily J. Pindilli, Brian Benscoter, Brian Tangen, Evan S. Kane, Scott D. Bridgham, Curtis J. Richardson
Diurnal patterns of methane flux from a seasonal wetland: mechanisms and methodology
Methane emissions from wetlands are temporally dynamic. Few chamber-based studies have explored diurnal variation in methane flux with high temporal replication. Using an automated sampling system, we measured methane flux every 2.5 to 4 h for 205 diel cycles during three growing seasons (2013–2015) from a seasonal wetland in the Prairie Pothole Region of North America. During ponded conditions, f
Authors
Sheel Bansal, Brian Tangen, Raymond Finocchiaro
Prairie Pothole Region wetlands and subsurface drainage systems: Key factors for determining drainage setback distances
Use of agricultural subsurface drainage systems in the Prairie Pothole Region of North America continues to increase, prompting concerns over potential negative effects to the Region's vital wetlands. The U.S. Fish and Wildlife Service protects a large number of wetlands through conservation easements that often utilize standard lateral setback distances to provide buffers between wetlands and dra
Authors
Brian Tangen, Mark T. Wiltermuth
Abundant carbon substrates drive extremely high sulfate reduction rates and methane fluxes in Prairie Pothole Wetlands
Inland waters are increasingly recognized as critical sites of methane emissions to the atmosphere, but the biogeochemical reactions driving such fluxes are less well understood. The Prairie Pothole Region (PPR) of North America is one of the largest wetland complexes in the world, containing millions of small, shallow wetlands. The sediment pore waters of PPR wetlands contain some of the highest
Authors
Paula Martins, David W. Hoyt, Sheel Bansal, Christopher T. Mills, Malak Tfaily, Brian Tangen, Raymond Finocchiaro, Michael D. Johnston, Brandon C. McAdams, Matthew J. Solensky, Garrett J. Smith, Yu-Ping Chin, Michael J. Wilkins
Effect of N fertilization and tillage on nitrous oxide (N2O) loss from soil under wheat production
Nitrous oxide (N2O-N) is one of the most important gases in the atmosphere because it is 300 times more powerful than carbon dioxide in its ability to trap heat, and is a key chemical agent of ozone depletion. The amount of N2O-N emitted from agricultural fields can be quite high, depending on the complex interplay between N fertility and residue management, plant N uptake, microbial processes, en
Authors
Sheel Bansal, Ezra Aberle, Jasper Teboh, Szilvia Yuja, Mark Liebig, Jacob Meier, Alec Boyd
Temperature and hydrology affect methane emissions from Prairie Pothole Wetlands
The Prairie Pothole Region (PPR) in central North America consists of millions of depressional wetlands that each have considerable potential to emit methane (CH4). Changes in temperature and hydrology in the PPR from climate change may affect methane fluxes from these wetlands. To assess the potential effects of changes in climate on methane emissions, we examined the relationships between flux r
Authors
Sheel Bansal, Brian Tangen, Raymond Finocchiaro
Greenhouse gas fluxes of a shallow lake in south-central North Dakota, USA
Greenhouse gas (GHG) fluxes of aquatic ecosystems in the northern Great Plains of the U.S. represent a significant data gap. Consequently, a 3-year study was conducted in south-central North Dakota, USA, to provide an initial estimate of GHG fluxes from a large, shallow lake. Mean GHG fluxes were 0.02 g carbon dioxide (CO2) m−2 h−1, 0.0009 g methane (CH4) m−2 h−1, and 0.0005 mg nitrous oxide (N2O)
Authors
Brian Tangen, Raymond Finocchiaro, Robert A. Gleason, Charles F. Dahl
Effects of land use on greenhouse gas fluxes and soil properties of wetland catchments in the Prairie Pothole Region of North America
Wetland restoration has been suggested as policy goal with multiple environmental benefits including enhancement of atmospheric carbon sequestration. However, there are concerns that increased methane (CH4) emissions associated with restoration may outweigh potential benefits. A comprehensive, 4-year study of 119 wetland catchments was conducted in the Prairie Pothole Region of the north-central U
Authors
Brian A. Tangen, Raymond G. Finocchiaro, Robert A. Gleason
- Overview
Previous work has shown that Prairie Pothole Region (PPR) wetlands are biogeochemical hotspots, with rapid turnover and transport rates of greenhouse gases (GHG). However, mechanisms controlling GHG fluxes are not well understood, leading to high uncertainty in model estimates of these processes. Additionally, unprecedented changes to land-use and cover in the PPR have potential to alter hydrology and water quality of wetlands, impacting biogeochemical processes. Management, restoration, and protection efforts require that information gaps on the controls of these processes be addressed to refine model estimates. The focus of this study is to 1) understand the abiotic and biotic factors that regulate GHG fluxes, 2) advance technology and methodologies for measuring GHG fluxes, and ultimately 3) develop spatially-explicit landscape-scale models of GHG fluxes from the PPR. In developing these models, we will be able to predict wetland responses to future changes in climate, hydrology, land use and land management. These results will be used to inform Department of Interior conservation and management strategies that reduce GHG emissions and facilitate GHG sequestration and storage.
- Publications
Below are publications associated with this project.
Typha (cattail) invasion in North American wetlands: Biology, regional problems, impacts, ecosystem services, and management
Typha is an iconic wetland plant found worldwide. Hybridization and anthropogenic disturbances have resulted in large increases in Typha abundance in wetland ecosystems throughout North America at a cost to native floral and faunal biodiversity. As demonstrated by three regional case studies, Typha is capable of rapidly colonizing habitats and forming monodominant vegetation stands due to traits sAuthorsSheel Bansal, Shane Lishawa, Sue Newman, Brian Tangen, Douglas Wilcox, Dennis Albert, Michael J. Anteau, Michael J Chimney, Ryann L. Cressey, Edward S. DeKeyser, Kenneth J Elgersam, Sarah A Finkelstein, Joanna Freeland, Richard Grosshans, Page E. Klug, Daniel J Larkin, Beth A. Lawrence, George Linz, Joy Marburger, Gregory B. Noe, Clint R.V. Otto, Nicholas Reo, Jennifer Richards, Curtis J. Richardson, LeRoy Rodgers, Amy J Shrank, Dan Svedarsky, Steven E. Travis, Nancy Tuchman, Arnold van der Valk, Lisamarie Windham-MyersHydrologic lag effects on wetland greenhouse gas fluxes
Hydrologic margins of wetlands are narrow, transient zones between inundated and dry areas. As water levels fluctuate, the dynamic hydrology at margins may impact wetland greenhouse gas (GHG) fluxes that are sensitive to soil saturation. The Prairie Pothole Region of North America consists of millions of seasonally-ponded wetlands that are ideal for studying hydrologic transition states. Using a lAuthorsBrian Tangen, Sheel BansalTerrestrial wetlands
1. The assessment of terrestrial wetland carbon stocks has improved greatly since the First State of the Carbon Cycle Report (CCSP 2007) because of recent national inventories and the development of a U.S. soils database. Terrestrial wetlands in North America encompass an estimated 2.2 million km2, which constitutes about 37% of the global wetland area, with a soil and vegetation carbon pool of abAuthorsRandall Kolka, Carl Trettin, Wenwu Tang, Ken W. Krauss, Sheel Bansal, Judith Z. Drexler, Kimberly P. Wickland, Rodney A. Chimner, Dianna M. Hogan, Emily J. Pindilli, Brian Benscoter, Brian Tangen, Evan S. Kane, Scott D. Bridgham, Curtis J. RichardsonDiurnal patterns of methane flux from a seasonal wetland: mechanisms and methodology
Methane emissions from wetlands are temporally dynamic. Few chamber-based studies have explored diurnal variation in methane flux with high temporal replication. Using an automated sampling system, we measured methane flux every 2.5 to 4 h for 205 diel cycles during three growing seasons (2013–2015) from a seasonal wetland in the Prairie Pothole Region of North America. During ponded conditions, fAuthorsSheel Bansal, Brian Tangen, Raymond FinocchiaroPrairie Pothole Region wetlands and subsurface drainage systems: Key factors for determining drainage setback distances
Use of agricultural subsurface drainage systems in the Prairie Pothole Region of North America continues to increase, prompting concerns over potential negative effects to the Region's vital wetlands. The U.S. Fish and Wildlife Service protects a large number of wetlands through conservation easements that often utilize standard lateral setback distances to provide buffers between wetlands and draAuthorsBrian Tangen, Mark T. WiltermuthAbundant carbon substrates drive extremely high sulfate reduction rates and methane fluxes in Prairie Pothole Wetlands
Inland waters are increasingly recognized as critical sites of methane emissions to the atmosphere, but the biogeochemical reactions driving such fluxes are less well understood. The Prairie Pothole Region (PPR) of North America is one of the largest wetland complexes in the world, containing millions of small, shallow wetlands. The sediment pore waters of PPR wetlands contain some of the highestAuthorsPaula Martins, David W. Hoyt, Sheel Bansal, Christopher T. Mills, Malak Tfaily, Brian Tangen, Raymond Finocchiaro, Michael D. Johnston, Brandon C. McAdams, Matthew J. Solensky, Garrett J. Smith, Yu-Ping Chin, Michael J. WilkinsEffect of N fertilization and tillage on nitrous oxide (N2O) loss from soil under wheat production
Nitrous oxide (N2O-N) is one of the most important gases in the atmosphere because it is 300 times more powerful than carbon dioxide in its ability to trap heat, and is a key chemical agent of ozone depletion. The amount of N2O-N emitted from agricultural fields can be quite high, depending on the complex interplay between N fertility and residue management, plant N uptake, microbial processes, enAuthorsSheel Bansal, Ezra Aberle, Jasper Teboh, Szilvia Yuja, Mark Liebig, Jacob Meier, Alec BoydTemperature and hydrology affect methane emissions from Prairie Pothole Wetlands
The Prairie Pothole Region (PPR) in central North America consists of millions of depressional wetlands that each have considerable potential to emit methane (CH4). Changes in temperature and hydrology in the PPR from climate change may affect methane fluxes from these wetlands. To assess the potential effects of changes in climate on methane emissions, we examined the relationships between flux rAuthorsSheel Bansal, Brian Tangen, Raymond FinocchiaroGreenhouse gas fluxes of a shallow lake in south-central North Dakota, USA
Greenhouse gas (GHG) fluxes of aquatic ecosystems in the northern Great Plains of the U.S. represent a significant data gap. Consequently, a 3-year study was conducted in south-central North Dakota, USA, to provide an initial estimate of GHG fluxes from a large, shallow lake. Mean GHG fluxes were 0.02 g carbon dioxide (CO2) m−2 h−1, 0.0009 g methane (CH4) m−2 h−1, and 0.0005 mg nitrous oxide (N2O)AuthorsBrian Tangen, Raymond Finocchiaro, Robert A. Gleason, Charles F. DahlEffects of land use on greenhouse gas fluxes and soil properties of wetland catchments in the Prairie Pothole Region of North America
Wetland restoration has been suggested as policy goal with multiple environmental benefits including enhancement of atmospheric carbon sequestration. However, there are concerns that increased methane (CH4) emissions associated with restoration may outweigh potential benefits. A comprehensive, 4-year study of 119 wetland catchments was conducted in the Prairie Pothole Region of the north-central UAuthorsBrian A. Tangen, Raymond G. Finocchiaro, Robert A. Gleason