近年来,随着GPS定位技术的发展,动物轨迹数据成为了当前的研究热点,其中动物家域估计是轨迹数据研究的重要部分。已有的T-Lo Co H家域估计算法没有考虑候鸟迁徙行为在速度上的显著差异性,不适合候鸟家域估计。针对以上问题,本文提出将...近年来,随着GPS定位技术的发展,动物轨迹数据成为了当前的研究热点,其中动物家域估计是轨迹数据研究的重要部分。已有的T-Lo Co H家域估计算法没有考虑候鸟迁徙行为在速度上的显著差异性,不适合候鸟家域估计。针对以上问题,本文提出将候鸟运动轨迹数据按其活动的周期性分段,并使用高斯模型估算其各阶段的最大运动速度,再结合T-Lo Co H方法估计出候鸟在各个运动阶段的家域。实验表明,这种基于高斯模型的T-Lo Co H候鸟家域估计算法能更精确地划分候鸟在各阶段的活动范围。展开更多
Understanding of animal spatial behavior is essential for informed management decisions.In southern Africa,reintroduction of lions(Panthera leo)to small reserves(<1000 km2)has increased since the early 2000s,howeve...Understanding of animal spatial behavior is essential for informed management decisions.In southern Africa,reintroduction of lions(Panthera leo)to small reserves(<1000 km2)has increased since the early 2000s,however studies on their ranging behavior in these enclosed systems remain lacking.We applied Time Local Convex Hull(T-LoCoH)methods to study the home range establishment and utilization of 11 lions reintroduced to Dinokeng Game Reserve,South Africa,during 2011 through 2014.Lions established home ranges close to their release sites and during the following 3 years their home range sizes continued to increase,but in each individual case the size remained smaller than half of the reserve area(<70 km2).Space use strategies differed between the core and the entire home range,with higher frequency of visits found in core areas.Exceptionally high rates(>60 separate visits)around the largest dam and along rivers suggest the importance of water and its surrounding vegetation in the lions’space utilization pattern.The home range size did not differ with season or sex of the individuals,whereas shifts in locations of home ranges revealed differences in the response of the 2 sexes to territorial conflicts and management interventions.Our study shows a dynamic home range utilization pattern and highlights the importance of both fine-scale space use patterns(frequency and duration of visits)and broadscale home range changes in understanding the ranging behavior of reintroduced animals.展开更多
文摘近年来,随着GPS定位技术的发展,动物轨迹数据成为了当前的研究热点,其中动物家域估计是轨迹数据研究的重要部分。已有的T-Lo Co H家域估计算法没有考虑候鸟迁徙行为在速度上的显著差异性,不适合候鸟家域估计。针对以上问题,本文提出将候鸟运动轨迹数据按其活动的周期性分段,并使用高斯模型估算其各阶段的最大运动速度,再结合T-Lo Co H方法估计出候鸟在各个运动阶段的家域。实验表明,这种基于高斯模型的T-Lo Co H候鸟家域估计算法能更精确地划分候鸟在各阶段的活动范围。
文摘Understanding of animal spatial behavior is essential for informed management decisions.In southern Africa,reintroduction of lions(Panthera leo)to small reserves(<1000 km2)has increased since the early 2000s,however studies on their ranging behavior in these enclosed systems remain lacking.We applied Time Local Convex Hull(T-LoCoH)methods to study the home range establishment and utilization of 11 lions reintroduced to Dinokeng Game Reserve,South Africa,during 2011 through 2014.Lions established home ranges close to their release sites and during the following 3 years their home range sizes continued to increase,but in each individual case the size remained smaller than half of the reserve area(<70 km2).Space use strategies differed between the core and the entire home range,with higher frequency of visits found in core areas.Exceptionally high rates(>60 separate visits)around the largest dam and along rivers suggest the importance of water and its surrounding vegetation in the lions’space utilization pattern.The home range size did not differ with season or sex of the individuals,whereas shifts in locations of home ranges revealed differences in the response of the 2 sexes to territorial conflicts and management interventions.Our study shows a dynamic home range utilization pattern and highlights the importance of both fine-scale space use patterns(frequency and duration of visits)and broadscale home range changes in understanding the ranging behavior of reintroduced animals.
