. The Canadian field-naturalist. Spermophilus franklinii lllli ninlli Tamios striatus. 1955 I960 1965 1970 1975 1955 I960 1965 1970 1975 Figure L Numberof adults offive species ofSciuridae trapped each year in northwestern Minnesota. Shaded bars represent captures from 10 June through 20 July and unshaded bars from 21 July through 31 August. Table 1. Cycle analysis for five species of Sciuridae in northwestern Minnesota from cosine function and auto-correlation methods. Percent rhythm is the variability in the data accounted for by the cosine function, r- is the similar measure for the serial
. The Canadian field-naturalist. Spermophilus franklinii lllli ninlli Tamios striatus. 1955 I960 1965 1970 1975 1955 I960 1965 1970 1975 Figure L Numberof adults offive species ofSciuridae trapped each year in northwestern Minnesota. Shaded bars represent captures from 10 June through 20 July and unshaded bars from 21 July through 31 August. Table 1. Cycle analysis for five species of Sciuridae in northwestern Minnesota from cosine function and auto-correlation methods. Percent rhythm is the variability in the data accounted for by the cosine function, r- is the similar measure for the serial correlation method. Cosine analys s Serial correlation Cycl e length Cycle length Species m years % Rhythm in years r- Spermophilus tridecemlineotus 8 45 8 .46 Spermophilus franklinii 10 69 11 .81 Tamias striatus 8 21 9 .19 Eutamias minimus 7 32 5 .19 Tamiasciurus hudsonicus 11 53 n .59. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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