Marten Home Ranges and Population Fluctuations

摘要: Live trapping was initiated in 1952 on a six square-mile area Glacier National Park, Montana, to obtain quantitative ecological data population of marten ( Martes americana ). Field work for this report conducted during the periods shown Table 1. Investigation ecology study is continuing. View table: Table 1 Field and effort Methods used description were presented previously (Newby Hawley, 1954). The 1954 progress did not give final figures size home ranges gave little information dynamics. present paper will discuss these aspects based more extensive now available. A total 3,993 trap units set period, resulting 525 captures 85 (54 males 31 females). Forty-nine marten, or 57.6 per cent, recaptured at least once. highest number one individual 73 an adult male over period 562 days. Male with 391 captures, accounted 74.4 cent but composed only 62.3 captured. average effort required capture 7.6 total, varied from 2.8 11.9 various quarterly periods. winter effort. Live produced their range relationships each other habitat. Minimum delineated by connecting outside points as plotted map prepared aerial photographs (Fig. 1). Home areas obtained use planimeter. This method because it encloses within which …