Brian Tangen is an Ecologist at the USGS Northern Prairie Wildlife Research Center (NPWRC) in Jamestown, North Dakota. Brian studied aquatic invertebrates in streams and wetlands while working towards bachelor’s and Master’s degrees from Valley City State University and North Dakota State University. He began his professional career processing and identifying aquatic invertebrates and conducting a wide variety of field work for NPWRC’s aquatics lab. Since then he has worked in a variety of roles at NPWRC performing research focused on carbon and greenhouse gas cycling in wetland systems, wetland hydrology, wetland management, and effects of climate- and land-use change.
- M.S., Biological Sciences, North Dakota State University, 2001
- B.A., Biology, Valley City State University, 1999
- Society of Wetland Scientists
- U.S. Fish and Wildlife Service
- U.S. Department of Agriculture
Science and Products
Brine Contamination to Plains and Potholes Environments from Energy Development in the Williston Basin
Effects of land use on greenhouse gas flux in playa wetlands and associated watersheds in the High Plains, USA
In the High Plains, U.S., native prairie conversion to cropland agriculture has resulted in a loss of service delivery capabilities from most depressional wetlands as a result of sedimentation. Restoring historic hydrological conditions to affected wetlands may rejuvenate some services, however, there may be tradeoffs due to emissions of CH4 ...Daniel, Dale W.; Smith, Loren M.; McMurry, Scott T.; Tangen, Brian A.; Dahl, Charles F.; Euliss, Ned; LaGrange, Ted
Chapter 13: 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...Kolka, Randall; Trettin, Carl; Tang, Wenwu; Krauss, Ken W.; Bansal, Sheel; Drexler, Judith Z.; Wickland, Kimberly P.; Chimner, Rodney A.; Hogan, Dianna M.; Pindilli, Emily J.; Benscoter, Brian; Tangen, Brian A.; Kane, Evan S.; Bridgham, Scott D.; Richardson, Curtis J.
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...Bansal, Sheel; Tangen, Brian A.; Finocchiaro, Raymond
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...Tangen, Brian A.; Wiltermuth, Mark T.
Potential effects of energy development on environmental resources of the Williston Basin in Montana, North Dakota, and South Dakota—Species of conservation concern: Chapter D in Potential effects of energy development on environmental resources of the Williston Basin in Montana, North Dakota, and South Dakota
The ecosystems of the Williston Basin provide direct and indirect benefits to society. These benefits include carbon sequestration, flood control, nutrient rich soils for agricultural productivity, and habitat for wildlife. This chapter’s main focus is on the effects of energy development on species that occupy the ecosystems in the Williston...Post van der Burg, Max; Symstad, Amy J.; Igl, Lawrence D.; Mushet, David M.; Larson, Diane L.; Sargeant, Glen A.; Harper, David D.; Farag, Aïda M.; Tangen, Brian A.; Anteau, Michael J.
A case study examining the efficacy of drainage setbacks for limiting effects to wetlands in the Prairie Pothole Region, USA
The enhancement of agricultural lands through the use of artificial drainage systems is a common practice throughout the United States, and recently the use of this practice has expanded in the Prairie Pothole Region. Many wetlands are afforded protection from the direct effects of drainage through regulation or legal agreements, and drainage...Tangen, Brian A.; Finocchiaro, Raymond
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...Martins, Paula; Hoyt, David W.; Bansal, Sheel; Mills, Christopher T.; Tfaily, Malak; Tangen, Brian A.; Finocchiaro, Raymond; Johnston, Michael D.; McAdams, Brandon C.; Solensky, Matthew J.; Smith, Garrett J.; Chin, Yu-Ping; Wilkins, Michael J.
Dissolved greenhouse gas concentrations and fluxes from Wetlands P7 and P8 of the Cottonwood Lake Study area, Stutsman County, North Dakota, 2015
A study was conducted to assess the relationships among carbon mineralization, sulfate reduction and greenhouse gas emissions in prairie pothole wetlands. These data are for dissolved methane and carbon dioxide concentrations and fluxes. Dissolved gas concentrations in the water column and fluxes to the atmosphere were estimated from April through...Bansal, Sheel; Tangen, Brian
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...Bansal, Sheel; Tangen, Brian A.; Finocchiaro, Raymond
Land use effects on pesticides in sediments of prairie pothole wetlands in North and South Dakota
Prairie potholes are the dominant wetland type in the intensively cultivated northern Great Plains of North America, and thus have the potential to receive pesticide runoff and drift. We examined the presence of pesticides in sediments of 151 wetlands split among the three dominant land use types, Conservation Reserve Program (CRP), cropland, and...McMurry, Scott T.; Belden, Jason B.; Smith, Loren M.; Morrison, Shane A.; Daniel, Dale W.; Euliss, Betty R.; Euliss, Ned H. Jr.; Kensinger, Bart J.; Tangen, Brian A.
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...Tangen, Brian A.; Finocchiaro, Raymond G.; Gleason, Robert A.
Monitoring and modeling wetland chloride concentrations in relationship to oil and gas development
Extraction of oil and gas via unconventional methods is becoming an important aspect of energy production worldwide. Studying the effects of this development in countries where these technologies are being widely used may provide other countries, where development may be proposed, with some insight in terms of concerns associated with development...Post van der Burg, Max; Tangen, Brian A.