Structural changes in an apparently stable chamois population in Basin Creek, Canterbury, New Zealand

摘要: Abstract Numbers of chamois (Rupicapra rupicapra) observed annually in Basin Creek, Canterbury, New Zealand, remained at between 42 and 72 from 1974 to 1977, despite movements large numbers migrants. changed seasonally, with a female peak summer male the breeding season (May June) each year. The proportion adult females increased over study period; those males, kids, yearlings fluctuated. number social groups containing also increased. Chamois Creek were predominantly solitary animals group size rarely exceeded four. Groups two or more formed mainly during birth seasons. Group declined study. Average monthly inflow marked population was 17.6%, average outflow 23.4%. Migrants contributed most both all Depending upon weather conditions, productivity varied 89 100%, which is high for populations. Kid mortality ...