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Estimating detection probability for Canada lynx Lynx canadensis using snow-track surveys in the northern Rocky Mountains, Montana, USAAuthor(s): John R. Squires; Lucretia E. Olson; David L. Turner; Nicholas J. DeCesare; Jay A. Kolbe
Source: Wildlife Biology. 18: 215-224.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: Download Publication (579.76 KB)
DescriptionWe used snow-tracking surveys to determine the probability of detecting Canada lynx Lynx canadensis in known areas of lynx presence in the northern Rocky Mountains, Montana, USA during the winters of 2006 and 2007. We used this information to determine the minimum number of survey replicates necessary to infer the presence and absence of lynx in areas of similar lynx density (approximately 2.8 lynx/100 km2) with confidence. The probability of detecting lynx in mountainous habitats that support resident populations was 0.80-0.99 when surveys were conducted on an 838 km2 grid with 10 km of search effort per cell. Snow-track surveys were highly successful at detecting the presence of Canada lynx over large landscapes. Two survey replicates established absence of Canada lynx with 95% certainty. The high probability of detection associated with snow-track surveys makes thismethod useful for documenting populations of Canada lynx in areas where their status is uncertain.
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CitationSquires, John R.; Olson, Lucretia E.; Turner, David L.; DeCesare, Nicholas J.; Kolbe, Jay A. 2012. Estimating detection probability for Canada lynx Lynx canadensis using snow-track surveys in the northern Rocky Mountains, Montana, USA. Wildlife Biology. 18: 215-224.
KeywordsCanada lynx, detection probability, forest carnivores, Lynx canadensis, monitoring, snow-track surveys
- A snow-tracking protocol used to delineate local lynx, Lynx canadensis, distributions
- A longevity record for Canada lynx, Lynx canadensis, in western Montana
- Canada lynx-bobcat (Lynx canadensis x L. rufus) hybrids at the southern periphery of lynx range in Maine, Minnesota and New Brunswick
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