Jake Ivan - Wildlife Researcher | Colorado Parks and Wildlife

Education

Ph.D., Fish, Wildlife, and Conservation Biology, Colorado State University, 2011, Dissertation: “Density, demography, and movement of snowshoe hares in central Colorado”; M.S., Wildlife Biology, University of Montana, 2000, Thesis: “Effectiveness of covered track plates for detecting American marten”; B.S., Wildlife Science, Purdue University, 1997.

Current or Recent Positions

Wildlife Researcher, Colorado Parks and Wildlife, August 2010 to present; Refuge Biologist, U.S. Fish & Wildlife Service, July 2003 to July 2005; Piping Plover Recovery Biologist, The Nature Conservancy, March 2000 to July 2003

Current and Recent Research Projects

Density, demography, and movements of snowshoe hares in central Colorado, 2006 to present; Using telemetry to correct for bias: an approach to estimating density from trapping grids, 2010 to present; Comparison of methods for estimating density from capture-recapture data, 2010 to present; Large-scale, long-term monitoring of lynx via occupancy estimation, 2010 to present; Effects of winter recreation on the movements and resource use of Canada Lynx in Colorado, 2010 to present; Comparison of candidate methods for large-scale monitoring of wolverine using simulation, 2010 to present; Predicting high-use areas for lynx in Colorado, 2011 to present; Identification of movement corridors for lynx in Colorado, 2012

Areas of Interest, Expertise

Estimation of wildlife population parameters; Forest carnivore ecology, conservation, and monitoring

Awards and Professional Activities

The Wildlife Society - member, 1994 to present
TWS Biometrics Working Group - member, 2006 to present
TWS Biometrics Working Group - Elections, 2012

Ecological Society of America - member, 2009 to present

American Society of Mammalogists - member, 1998 to present

Certified Wildlife Biologist, 2009 to present

Selected Publications

Ivan, J. S., G. C. White, and T. M. Shenk. 2013. Using auxiliary telemetry information to estimate animal density from capture-recapture data. Ecology 94(4): 809–816.

Ivan, J. S., G. C. White, and T. M. Shenk. 2013. Using simulation to compare methods for estimating density from capture-recapture data. Ecology 94 (4): 817–826.

Ivan, J. S. 2013. Density estimation. Pages 20.1-20.19 in E. Cooch and G. White, Editors. Program MARK - 'A Gentle Introduction'. 11th Edition. 983pp. "Program MARK" software overview, book and download.

Stromborg, K. L., J. S. Ivan, J. K. Netto, and C. R. Courtney. In press. Survivorship and mortality patterns of cormorants at Spider Island, Wisconsin, 1988-2006. Waterbirds 00:000-000.

Ivan, J. S., and R. K. Murphy. 2005. What preys on piping plover eggs and chicks? Wildlife Society Bulletin 33:113-119.

Murphy, R. K., R. J. Greenwood, J. S. Ivan, and K. A. Smith. 2003. Predator exclusion methods for managing endangered shorebirds: are two barriers better than one? Waterbirds 26:156-159.

Murphy, R. K., I. M. G. Michaud, D. R. C. Prescott, J. S. Ivan, B. J. Anderson, and M. L. French-Pombier. 2003. Predation on adult piping plovers at predator exclosure cages. Waterbirds 26:150-155.

Ivan, J. S., and R. K. Swihart. 2000. Selection of mast by granivorous rodents of the central hardwood forest region. Journal of Mammalogy 81:549-562.