Ecological Archives A020-005-A4

P. C. Cross, E. K. Cole, A. P. Dobson, W. H. Edwards, K. L. Hamlin, G. Luikart, A. D. Middleton, B. M. Scurlock, and P. J. White. 2010. Probable causes of increasing brucellosis in free-ranging elk of the Greater Yellowstone Ecosystem. Ecological Applications 20:278–288.

Appendix D. Boxplots of elk group sizes over time around the Greater Yellowstone Ecosystem and Elk group sizes for Montana hunt districts 360, 362, and 314.

 

   FIG. D1. Boxplots of elk group sizes over time around the Greater Yellowstone Ecosystem.  Locations of the herd unit numbers listed above the graphs are shown in Fig. 1. Wall Creek is a wildlife management area with herd unit 323. Boxes are 1.5 times the interquartile range and whiskers extend to the 5th and 95th percentiles. The National Elk Refuge is not shown with the rest of the feedgrounds (1984–2007 average = 7403).


 

 

   FIG. D2. Elk group sizes for Montana hunt districts 360, 362, and 314. Each dot represents an elk group seen during the population survey. Dashed lines represent the quantile regressions of the 50th, 95th, and 99th percentiles. The slopes of the 95th and 99th quantile regressions were significantly different than zero for both populations (bootstrap method, R = 1000).


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