Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

Brian Tangen


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