Google Scholar Page

Journal publications:

    1. Hefley, T.J., B.M. Brost, M.B. Hooten (In press) Bias correction of bounded location errors in presence­-only data. Methods in Ecology and Evolution [pdf] [R code S1 & S3]
    2. Hefley, T.J., M.B. Hooten, R.E. Russell, D.P. Walsh, J.A., Powell (2017) When mechanism matters: Bayesian forecasting using models of ecological diffusion. Ecology Letters 20:640-650. [pdf] [R code S1 & S2]
    3. Hefley, T.J., M.B. Hooten, E.M. Hanks, R.E. Russell, D.P. Walsh (2017) Dynamic spatio-temporal models for spatial data. Spatial Statistics 20: 206-220. [pdf] [R code]
    4. Hefley, T.J., K.M. Broms, B.M. Brost, F.E. Buderman, S. Kay, H.R. Scharf, J.R. Tipton, P.J., Williams, M.B. Hooten (2017) The basis function approach for modeling autocorrelation in ecological data. Ecology 98:632-646. [pdf] [R code S3, S4, & S5]
    5. Williams, P.J., M.B. Hooten, J.N Womble, G.G Esslinger, M.R. Bower, T.J. Hefley. (2017) An integrated data model to estimate spatio-temporal occupancy, abundance, and colonization dynamics. Ecology 98:328-336. [pdf]
    6. Hefley, T.J., M.B. Hooten, E.M. Hanks, R.E. Russell, D.P. Walsh (2017) The Bayesian group lasso for confounded spatial data. Journal of Agricultural, Biological, and Environmental Statistics 22:42-59. [pdf] [R code]
    7. Hefley, T.J., M.B. Hooten, J.M. Drake, R.E. Russell, D.P. Walsh (2016) When can the cause of a population decline be determined? Ecology Letters 19:1353-1362. [pdf] [data] [R code]
    8. Hefley, T.J., M.B. Hooten. (2016) Hierarchical species distribution models. Current Landscape Ecology Reports 1:87-97.
    9. [pdf]
    10. Baasch, D.M., T.J. Hefley, S.D. Cahis (2015) A comparison of breeding population estimators using nest and brood monitoring data. Ecology and Evolution 5:4197-4209 [pdf] [spreadsheet]
    11. Hefley, T.J., D.M. Baasch, A.J. Tyre, E.E. Blankenship. (2015) Use of opportunistic sightings and expert knowledge to predict and compare whooping crane stopover habitat. Conservation Biology 29:1337-1346. [pdf] [data] [R code]
    12. Hefley, T.J., M.B. Hooten. (2015) On the existence of maximum likelihood estimates for presence-only data. Methods in Ecology and Evolution 6:648-655. [pdf] [data] [R code S2 & S3]
    13. Hefley, T.J., D.M. Baasch, A.J. Tyre, E.E. Blankenship. (2014) Correction of location errors for species distribution models. Methods in Ecology and Evolution 5:207-214. [pdf] [data] [R code]
    14. Nemec, K., J. Chan, C. Hoffman, T. Spanbauer, J. Hamm, C. Allen, T. Hefley, D. Pan, P. Shrestha. (2014) Assessing resilience in stressed watersheds, USA. Ecology and Society 19(1):34. [pdf]
    15. Hefley, T.J., A.J. Tyre, D.M. Baasch, E.E. Blankenship. (2013) Non-detection sampling bias in marked presence-only dataEcology and Evolution 3:5225-5236. [pdf] [Rcode]
    16. Hefley, T.J., A.J. Tyre, E.E. Blankenship. (2013) Statistical indicators and state-space population models predict extinction in a population of bobwhite quail. Theoretical Ecology 6:319-331. [pdf]
    17. Hefley, T.J., A.J. Tyre, E.E. Blankenship. (2013) Fitting population growth models in the presence of measurement and detection error. Ecological Modelling 263:244-250. [pdf] [R code see Appendix C]
    18. Hefley, T.J., S.E. Hygnstrom, J.M. Gilsdorf, G.M. Clements, M.J. Clements, A.J. Tyre, D.M. Baasch, K.C. VerCauteren. (2013) Effects of deer density and cropland conversion on mass of white-tailed deer. Journal of Fish and Wildlife Management 4:20-32. [pdf] [data] [R code]
    19. Hefley, T.J., A.J. Tyre. (2011)  Favorable team scores under the team-based learning paradigm: a statistical artifact? Review of Undergraduate Research in Agricultural and Life Sciences 6(1). [pdf]  
    20. Lavelle, M.J., K.C. VerCauteren, T.J. Hefley, G.E. Phillips, S.E Hygnstrom, D.B. Long, J.W. Fischer, S.R. Swafford, T.A. Campbell. (2011) Evaluation of fences for containing feral swine under simulated depopulation conditions. Journal of Wildlife Management 75:1200-1208. [pdf]
    21. Thiele, J., T. Hefley, L. Beck-Johnson, 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). [pdf]  

Dissertation: 

    1. Hefley, T.J. (2014). New statistical methods for analysis of historical data from wildlife populations. University of Nebraska-Lincoln. [pdf]

Data packages: 

    1. Hefley, T.J., B.M. Brost, M.B. Hooten (2017) Bias correction of bounded location errors in presence­-only data. http://datadryad.org/resource/doi:10.5061/dryad.82qd0. [data] 
    2. Hefley, T.J., D.M. Baasch, A.J. Tyre, E.E. Blankenship. (2015) Data for: Use of opportunistic sightings and expert knowledge to predict and compare whooping crane stopover habitat. http://datadryad.org/resource/doi:10.5061/dryad.t6859. [data]
    3. Hefley, T.J., D.M. Baasch, A.J. Tyre, E.E. Blankenship. (2014) Data for: Correction of location errors for species distribution models. http://datadryad.org/resource/doi:10.5061/dryad.h81s5. [data]
    4. 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) Data for: Effects of deer density and cropland conversion on mass of white-tailed deer. http://datadryad.org/resource/doi:10.5061/dryad.hn45t [data]

Reports: 

    1. Pearse, A.T., D.A. Brandt, W.C. Harrell, K.L. Metzger, D.M. Baasch, and T.J. Hefley. (2015) Whooping crane stopover site use intensity within the Great Plains. U.S. Geological Survey Open-File Report 2015-1166. [pdf]
    2. Smith, C.B., D.M. Baasch, and T.J. Hefley. (2012) Forage fish abundance and the influence of river flow−management implications for the endangered least tern. Technical report published by Executive Director’s office of the Platte River Recovery Implementation Program. [pdf]  
    3. 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. [pdf]