Haywood, Carl N. (ed.) / Transactions of the Wisconsin Academy of Sciences, Arts and Letters
volume 75 (1987)
Thiel, Richard P.
The status of Canada lynx in Wisconsin, 1865-1980, pp. 90-96 PDF (2.7 MB)
/865-1924 10- 5- 867 876 I 1886 Jr 1865 l~!T~~ 1925-1980 LL 0 o z YEAR COLLECTED Canada Lynx in Wisconsin 91 of lynx in Wisconsin) filled out by bobcat hunters and trappers licensed by the DNR were also reviewed. While sight and track reports of lynx by citizens are of questionable value, specimens offer bonafide proof of the occurrence of a species. Caution is warranted when utilizing museum specimens in attempting to determine species status because of sporadic or incomplete specimen sampling and because museum collections tend to underemphasize areas where a species commonly occurs. The assumption used to examine the available lynx data is that, in the absence of other explanations, lynx specimens associated with periodic Canadian irruptions indicate the presence of an established population, and conversely, specimen occurrences corresponding with periodic in- ruptions suggest the absence of a viable Wisconsin lynx population. Results UGLS Lynx Collections vs. Canadian irruptions. Figure 1 compares the occurrence of UGLS lynx specimens with peaks in lynx irruptions reported from Canada (Elton and Nicholson 1942; Keith 1963; Gunderson 1978; Mech 1980). In this study eighty lynx specimens—S from Michigan, 16 from Wisconsin, and 59 from Minnesota, were located in museums. An additional 12 Wisconsin (Table 1) and 3 Michigan non-museum lynx carcass records were included in the analysis. Deposition of lynx specimens into museums has been sporadic; only 28 of the 95 known specimens were deposited in the 85 years prior to 1950. 1897 905 1914 iii I I'' ~l ' ~ I' 1875 1880 885 1890 1895 1900 1905 1910 1915 1920 953-54 Fig. 1. Relationship between Canadian irruptions (arrows and dates), and the number of Upper Great Lakes states lynx specimens in museums and DNR carcass records.
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