Effects of sagebrush treatments on multi-scale resource selection by pygmy rabbits

Call Number:

Keywords:

Abstract:

The effects of widespread sagebrush removal treatments on pygmy rabbits (Brachylagus idahoensis) are not well understood. Due to reliance on sagebrush, pygmy rabbits are among the species for which these treatments may be detrimental. Objectives for this study were to evaluate the effects of experimental sagebrush treatment on 8 radio-collared pygmy rabbits between and within home range habitat selection using Monte Carlo simulation from null models. Pygmy rabbits were not extirpated from plots containing habitat treatments, and the authors found no evidence that treatments affected home range placement. The mean treatment distance of observed home range centers did not differ from repeated trials of random points. However, the authors found evidence of within home range selection against treatments from 2 of 8 rabbits located close to the treatments. The mean treatment distance of all observed locations for these 2 rabbits was greater than expected based on a null model. Snow tracking was used to show that pygmy rabbits entered treatments in 4 out of 21 trials, a frequency which was less often than expected by chance (G2 = 8.662, P = 0.003). Conservatively, sagebrush removal treatments should not be conducted on active or recently active pygmy rabbit burrows. Elsewhere near known pygmy rabbit sites, treated patches should be small and connected by untreated corridors to prevent potentially limiting movement of rabbits among the untreated habitat.

Notes:

ELECTRONIC FILE - Zoology

Citation: Wilson TL, Howe FP, Edwards TC Jr. 2011. Effects of sagebrush treatments on multi-scale resource selection by pygmy rabbits. Journal of Wildlife Management. 75(2):393–398.