Home range of greater and lesser rhea in Argentina: relevance to conservation
Home range of greater and lesser rhea in Argentina: relevance to conservation
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DOI：
10.1007/s10531-004-1086-0
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发表时间：
2004-12-01
影响因子：
3.4
通讯作者：
Vignolo, PE
中科院分区：
文献类型：
--
作者：
Bellis, LM;Martella, MB;Vignolo, PE
在这项工作中，我们报告了两个濒临威胁的物种--较大的美洲斑潜蝇(Rhea Americana)和较小的美洲斑潜蝇(Pterocnania Pennata Pennata)--在不同土地利用制度下的活动和活动范围大小的无线电跟踪研究结果。我们在它们各自的栖息地--潘帕斯和巴塔哥尼亚地区--进行了长达3年的放射性监测。我们在每个栖息地选择了两个研究区域，农业活动相似，狩猎控制不同。我们没有发现在每个物种的研究区域之间的活动和家园大小的显著差异。这表明，人类在该区域的存在引起的干扰并不影响LIA的间隔行为。此外，较小的美洲虎表现出比较大的美洲虎更大的活动范围和活动范围，这表明活动范围的大小不是身体质量的一成不变的属性，食物的丰富和分布似乎是影响这些鸟类的活动和活动范围大小的主要因素。
In this work we report results of radiotracking studies on the movements and home range sizes of two near-threatened species, the greater rhea ( Rhea americana) and the lesser rhea (Pterocnemia pennata pennata) in relation to different land use regimes. We radiomonitored greater and lesser rheas for 3 years in their respective habitats: the Pampas and the Patagonia regions. We chose two study areas in each habitat with similar agricultural activities and different hunting control. We did not find significant differences in movements and home range size between study areas of each species. This suggests that disturbance caused by human presence in the areas did not affect rhea spacing behaviors. Moreover, lesser rheas showed larger home range and movements than greater rheas, showing that the home range size is not an immutable property of body mass, and that abundance and distribution of food appears to be the main factor that influences the movements and home range size of these birds.