Skip to Main Content
Track counts as indices to abundances of arboreal rodents.Author(s): A.B. Carey; J.W. Witt
Source: Journal of Mammology. 72(1): 192-194
Publication Series: Scientific Journal (JRNL)
PDF: View PDF (82 KB)
DescriptionCounting tracks to obtain an index of abundance for species difficult to capture offers a promise of efficiency and effectiveness when broad surveys of populations are necessary. Sand plots, smoked kymograph paper, and, recently, smoked aluminum plates have been used to record tracks(Raphael et al., 1986; Taylor and Raphael, 1988). Findings of studies of carnivores conducted by using smoked-aluminum track-plates suggest the technique might prove useful for study of arboreal rodents, especially northern flying squirrels, Glaucomys sabrinus (Raphael et al., 1986). Raphael et al. (1986) reported patterns of abundance of flying squirrels based on track-plate surveys and recommended track plates for that purpose. We tried unsuccessfully to calibrate a track index to densities of flying squirrels and Townsend’s chipmunks (Tamias townsendii), as determined by live trapping, and abundance of Douglas' squirrels (Tamiasciurus douglasii), as determined from point counts of calls. Although the techniques are not directly comparable, rank orders of abundance derived from live trapping and point counts (direct observations of individual animals) can be contrasted with rank orders derived from track counts (observation of sign). We report those results here.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationCarey, A.B.; Witt, J.W. 1991.. Track counts as indices to abundances of arboreal rodents. Journal of Mammology. 72(1): 192-194
- Methods for measuring populations of arboreal rodents.
- Effects of forest management on truffle abundance and squirrel diets.
- Response of northern flying squirrels to supplementary dens.
XML: View XML