Ecology | Statistics



  • Conn, P. B., D. S. Johnson, P. J. Williams, S. R. Melin, and M. B. Hooten. In Revision. A guide to Bayesian model checking for ecologists.
  • Williams, P. J., M. B. Hooten, G. G. Esslinger, J. N. Womble, J. L. Bodkin, and M. R. Bower. In Review. The rise of an apex predator following deglaciation.
  • Williams, P. J., W. L. Kendall, M. B. Hooten, J. A. Schmutz, and C. R. Ely. In Review. Seasonal integrated population models provide deeper understanding of demographic processes than annual models.
  • Williams, P. J., W. L. Kendall, and M. B. Hooten. In Review. Selecting ecological models using multi-objective optimization. 
  • Levin, E., O. Mass, A. Dolev, R. Drori, P. J. Williams, and P. F. Doherty, Jr. In Revision. Adaptive value of pelage coloration for feral cats (Felis catus) in Mediterranean woodlands.


  • Williams, P. J., M. B. Hooten, J. N. Womble, G. G. Esslinger, and M. R. Bower. In Press. Monitoring dynamic spatio-temporal ecological processes optimally. Ecology.
  • Williams, P. J., M. B. Hooten, J. N. Womble, and M. R. Bower. 2017Estimating occupancy and abundance using aerial images with imperfect detection. Methods in Ecology and Evolution 8:1679-1689.
  • Hefley, T. J., K. M. Broms, B. M. Brost, F. E. Buderman, S. L. Kay, H. R. Scharf, J. R. Tipton, P. J. Williams, M. B. Hooten. 2017. The basis function approach to modeling autocorrelation in ecological data. Ecology 98:632-646.
  • Williams, P. J., M. B. Hooten, J. N. Womble, G. G. Esslinger, M. R. Bower, and T. J. Hefley. 2017. An integrated data model to estimate spatio-temporal occupancy, abundance, and colonization dynamics. Ecology 98:328-336.
  • Williams, P. J., and W. L. Kendall. 2017. A guide to multi-objective optimization for ecological problems. Ecological Modelling 343:54-67.



  • Williams, P. J., and M. B. Hooten. Combining statistical inference and decisions in ecology. 2016. Ecological Applications 26: 1930-1942.
  • Crimmins, S. M., P. C. McKann, J. R. Robb, J. P. Lewis, T. Vanosdol, B.A. Walker, P. J. Williams and W. E. Thogmartin. 2016. Factors affecting Henslow’s sparrow (Ammodramus henslowii) nest survival in southern Indiana. Wilson Journal of Ornithology 128:1-10.


  • Vigil, E., M. K. R. Christianson, J. M. Lepak, and P. J. Williams. 2015. Temperature effects on hatching and viability of juvenile gill lice; Salmincola californiensis. Journal of Fish Diseases.


  • Gerber, B. D., P. J. Williams, and L. L. Bailey. 2014. Primates and Cameras: Non-invasive sampling to make population-level inferences while accounting for imperfect detection. International Journal of Primatology 35:841-858.
  • Williams, P. J., S. H. Whitmore, and R. J. Gutierrez. 2014. Use of private lands for foraging by California spotted owls in the central Sierra Nevada. Wildlife Society Bulletin 38:705-709.
  • Lesmeister, D. B., S. Blomquist, E. V. Lonsdorf, D. Wood, P. J. Williams, B. Pendley, K. E Mangan, B. A. Walker. 2014. Forest invasive adaptive management on National Wildlife Refuge Lands in the central hardwood region. Proceedings of the 19th Central Hardwood Forest Conference 19:22-35


  • Williams, P. J., N. J. Engbrecht, J. R. Robb, V. C. K. Terrell, and M. J. Lannoo. 2013. Surveying a threatened amphibian species through a narrow detection window. Copiea 2013:552-561.
  • Engbrecht, N. J., M. J. Lannoo, P. J. Williams, J. R. Robb, T. Gerardot,. D. R. Karns, M. Lodato. 2013. Is there hope for the Hoosier Frog? An update on the status of Crawfish Frogs (Lithobates areolatus) in Indiana, with recommendations for their conservation. Proceedings of the Indiana Academy of Science 121:147-157.


  • Williams, P. J., J. R. Robb, and D. R. Karns. 2012. Habitat selection by crawfish frogs (Lithobates areolatus) in a large mixed grassland/forest habitat. Journal of Herpetology 46:682-688.
  • Williams, P. J., J. R. Robb, and D. R. Karns. 2012. Occupancy dynamics of breeding crawfish frogs in southeastern Indiana. Wildlife Society Bulletin 36:350-357.
  • Williams, P. J., J. R. Robb, R. H. Kappler, T. E Piening, and D. R. Karns. 2012. Intraspecific density dependence in larval development of the crawfish frog, Lithobates areolatus. Herpetological Review 43:36-38.
  • Heemeyer, J. L., P. J. Williams, M. J. Lannoo. 2012. Obligate Crayfish Burrow Use and Core Habitat Requirements of Crawfish Frogs. Journal of Wildlife Management 76:1081-1091.


  • Williams, P. J., R. J. Gutierrez, S. Whitmore. 2011. Home range and habitat selection of the spotted owl in the central Sierra Nevada. Journal of Wildlife Management 75:333-343.
  • Hoffman, A. S., J. Heemeyer, P. J. Williams, J. R. Robb, D. R. Karns, and M. J. Lannoo. 2010. Strong site fidelity and a variety of imaging techniques reveal activity patterns in crawfish frogs (Lithobates areolatus), a species of conservation concern. BioScience 60:829-834.
  • Schook, D. M., M. D. Collins, W. E. Jensen, P. J. Williams, N. E. Bader, and T. H. Parker. 2008. Geographic patterns of song similarity in the Dickcissel. The Auk 125:953-964.