A Safe Approach to Natural Home Ranges, as Applied to the Solution of Edge Effect Subjects, Using Capture-recapture Data in Vole Populations

Capture-recapture work was performed in 1970 and 1971 w i t h Microtus montebelli seeking to disclose the edge effect subjects. For the purpose, in p r i n c i p l e , it is needful for us to approach the reality of home range in s i z e and shape. As the result of these studies, it has been established that the method u s i n g observed range length and width is h i g h l y available for searching after natural ranges and that the natural range of the voles (Microtus and Clethrionomys) is o r d i n a r i l y on the order of 0.05 for females and of 0.10 for males in acres and generally oblong in shape such as i t s eccentricity is about 0.80. Several tentative means have been thus far presented for determining the area of effect by sampling, but the process of Dice's assessment l i n e has proved to be most useful in i t s sureness and s i m p l i c i t y ; i ts empirical validity could be confirmed through mediation of Marten's notion (1972) and Wierzbowska's (1972).