The Therkildsen Field Station (TFSE) supports exciting and quality research in the Emiquon Preserve and the surrounding area, regardless of topic, specialty, or affiliation. In its short history, the TFSE has supported a range of research projects, both inside and outside of the Emiquon Preserve, with the focus ranging from microbial ecology to prairie restoration to insect venom. To learn more about current and past research at the TFSE check out our active projects and student projects pages.

To conduct research in the Emiquon Preserve you will need to apply for a Research Permit (.docx) from The Nature Conservancy. If you have questions, would like to learn more about conducting research at the TFSE, or have data to share, please contact us.


This page will host links to current and historical datasets collected in and around the Emiquon Preserve.

Check back for updates.


Check back for updates on publications focused on and around the Emiquon Preserve.

  • Chen, H, S Popovich, A McEuen, and B Briddell. 2017. Carbon and nitrogen storage of a restored wetland at Illinois’ Emiquon Preserve: potential for carbon sequestration. Hydrobiologia. doi: 10.1007/s10750-017-3218-z.
  • Lemke, AM, JR Herkert, JW Walk, and KD Blodgett. 2017. Application of key ecological attributes to assess early restoration of river floodplain habitats: a case study. Hydrobiologia. doi: 10.1007/s10750-017-3261-9.
  • Lemke, MJ, HM Hagy, K Dungey, AF Casper, AM Lemke, TD VanMiddlesworth and A. Kent. 2017. Echoes of a flood pulse: short-term effects of record flooding of the Illinois River on floodplain lakes under ecological restoration. Hydrobiologia. doi: 10.1007/s10750-017-3220-5.
  • Hagy, HM, MM Horath, AP Yetter, CS Hine, and RV Smith. 2016. Evaluating tradeoffs between sanctuary for migrating waterbirds and recreational opportunities in a restored wetland complex.  Hydrobiologia. doi: 10.1007/s10750-016-2711-0.
  • Hagy, HM, CS Hine, MM Horath, AP Yetter, RV Smith, and JD Stafford. 2016. Waterbird response indicates floodplain wetland restoration. Hydrobiologia. doi: 10.1007/s10750-016-3004-3.
  • Hine, CS, HM Hagy, AP Yetter, MM Horath, RV Smith and JD Stafford. 2016. Response of aquatic vegetation and other wetland cover types to floodplain restoration at Emiquon Preserve. Hydrobiologia. doi:10.1007/s10750-016-2893-5.
  • Sparks, RE, KD Blodgett, AF Casper, HM Hagy, ML Lemke, AFM Velho and LC Rodrigues. 2016. Why experiment with success? Opportunities and risks in applying assessment and adaptive management to the Emiquon floodplain restoration project. Hydrobiologia. doi:10.1007/s10750-016-2785-8.
  • VanMiddlesworth, TD, GG Sass, BA Ray, TW Spier, JD Lyons, NN McClelland, and AF Casper. 2016. Food habits and relative abundances of native piscivores: implications for controlling common carp. Hydrobiologia. doi:10.1007/s10750-016-2866-8.
  • VanMiddlesworth, TD, NN McClelland, GG Sass, AF Casper, TW Spier, and MJ Lemke. 2016. Fish community succession and biomanipulation to control two common aquatic ecosystem stressors during a large-scale floodpain lake restoration. Hydrobiologia. doi:10.1007/s10750-016-2696-8.
  • Fretueg, GR, DR Ruez, Jr., and Yi-Sz Lin.  In Review.  Observations on latrine site selection by North American river otter (Lontra canadensis) in central Illiois.
  • Fretueg, GR, TJ Martin, C Widga, and DR Ruez. 2015. Summer Diet Characteristics of North American River Otters (Lontra canadensis) in Central Illinois. American Midland Naturalist, 173(2). 294-304.
  • Lemke, M, AF Casper, TD Van Middlesworth, HH Hagy, J Walk, D Blodgett and K Dungey.  2014. Ecological Response of Floodplain Restoration to Flooding Disturbance: A comparison of the effects of heavy and light flooding. World Environmental and Water Resources Congress 2014. 1120-1127.
  • Van Middlesworth, TD, NN Michaels, and AF Casper. 2013. The Nature Conservancy’s Emiquon Fish and Aquatic Vegetation Monitoring 6-year (2007-2012) Report. Illinois Natural History Survey, Technical Report (02).
  • Havera, SP, KE Roat, and LL Anderson. 2003. The Thompson Lake/Emiquon Story: The Biology, Drainage, and Restoration of an Illinois River Bottomland Lake. Illinois Natural History Survey, Special Publication (25).