Headwaters Corporation (May 2010–July 2010)
I conducted monitoring protocols for the threatened and endangered species (interior least tern and piping plover) within the Central Platte River. Duties included conducting airboat surveys, canoe surveys, nest searching, and remote observation of behavior. In addition, we coordinated efforts with various government agencies (USGS and USFWS).
-Supervisor: Dr. Dave Baasch
USDA/APHIS/WS/National Wildlife Research Center and University of Nebraska-Lincoln (June 2009–August 2009)
I evaluated temporary fences for confinement of feral hogs during depopulation actions. I coordinated efforts of 25 on-site employees and volunteers, constructed a variety of fences, captured, handled, ear tagged, and cared for 200 feral hogs. Research was conducted at Texas A & M University facilities in Kingsville, TX.
-Supervisor: Drs. Scott Hygnstrom, Kurt VerCauteren, David Long, and Tyler Campbell
Lavelle, M.J., K.C. VerCauteren, T.J. Hefley, G.E. Phillips, S.E Hygnstrom, D.B. Long, J.W. Fischer, S.R. Swafford, and T.A. Campbell. Evaluation of Fences for Containing Feral Swine Under Simulated Depopulation Condition. Journal of Wildlife Management 75:1200-1208.
University of Nebraska-Lincoln (May 2008–August 2008)
I assisted four undergraduates in the National Science Foundation sponsored Research for Undergraduates in Theoretical Ecology (RUTE) program at the University of Nebraska’s Cedar Point Biological Research Station. Their research involved collecting data on plant species composition, soil nutrient sampling, and light intensity measurements for Nunet—a worldwide collaboration of nutrient addition experiments. In addition, my students collected data on temporal and spatial variation of grasshopper species and abundance. I assisted in all aspects of data collection and exploratory data analysis.
-Supervisor: Dr. Jean Knops
University of Nebraska-Lincoln (May 2007–June 2009)
I assisted graduate students in collecting and analyzing field data from white-tailed and mule deer in Nebraska and western Iowa. My field duties included, assisting in chemical immobilization (Safe-Capture certified), equipping deer with radio collars, collecting telemetry data, maintaining check stations, and aging hunter harvested deer. Analysis duties included assisting in development and testing of an individual based model that predicted the transmission of chronic wasting disease. I also analyzed check stand data (age, weight, date of harvest) and presented results to various management agencies, research journals, and at professional meetings.
-Supervisor: Dr. Scott Hygnstrom
Hefley, T.J., S.E. Hygnstrom, J.M. Gilsdorf, G.M. Clements, M.J. Clements, A.J. Tyre, D.M. Baasch, and K.C. VerCauteren. 2013. Effects of deer density and cropland conversion on mass of white-tailed deer. Journal of Fish and Wildlife Management (in press).
Hefley, T.J., S.E. Hygnstrom, J.M. Gilsdorf, G.M. Clements, M.J. Clements, A.J. Tyre, D.M. Baasch, and K.C. VerCauteren. 2010 Analysis of deer hunting harvest data from DeSoto National Wildlife Refuge, 1990-2009. Final report presented to DeSoto National Wildlife Refuge.
University of Nebraska-Lincoln (May 2007–August 2008)
I participated in National Science Foundation sponsored Research for Undergraduates in Theoretical Ecology (RUTE). Two math majors, one natural resource major, and I trapped mosquitoes in Lancaster county Nebraska. Mosquitoes were then identified by species and counted. We tested species that were important vectors of West Nile Virus using RAMP methods. We developed an individual based model predicting population dynamics of vector species and presented results at the Ecological Society of America annual meeting.
Thiele, J., T. Hefley, L. Beck-Johnson, and E. Mathews. 2009. Early season mosquito population dynamics in Lancaster County, Nebraska and implications for West Nile Virus. Review of Undergraduate Research in Agricultural and Life Sciences 4(3)..
Research TechnicianUniversity of Nebraska-Lincoln (July 2006–September 2006)
I assisted in collection and lab analysis of samples of water in Nebraska. Duties included driving long distances and collecting samples in remote locations. Lab work included preserving samples, measuring alkalinity and nutrients.
-Supervisor: Dr. Aris Holz
University of Nebraska-Lincoln (May 2006–June 2006)
I participated in National Science Foundation sponsored Research for Undergraduates in Theoretical Ecology (RUTE). I collected and analyzed data on population dynamics of aphids and predator-prey dynamics of ladybird beetles.