抄録
Nine female sika deer Cervus nippon were tracked by radio telemetry in eastern Hokkaido in the summer of 2000. Two habitat use sampling techniques were then compared: diurnal location sampling (diurnal sampling) and sampling every 2 hours over 24 hour periods of tracking (24-hr sampling). Habitat use determined by diurnal sampling for eight sika deer was not different from that determined by 24-hr sampling, and habitat use by six sika deer did not differ between day and night in the 24-hr sampling events. This suggests that diurnal locations sufficiently represent the overall patterns of habitat use. Three sika deer tended to use relatively open habitats more frequently during the night than during the day, possibly to avoid human disturbances. Most of the nocturnal locations of eight deer were distributed within or overlapped with the home ranges estimated by diurnal sampling, while some nocturnal locations of one deer in agricultural fields were outside its diurnal home range. The use of agricultural fields may be underestimated by diurnal sampling alone.
