Interim Group Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany.
Wild Chimpanzee Foundation - Guinean Representation, Commune de Dixinn, BP1487P, Conakry, Guinea.
Primates. 2021 Sep;62(5):723-734. doi: 10.1007/s10329-021-00927-5. Epub 2021 Jul 4.
Ranging behavior has been studied extensively in eastern (Pan troglodytes schweinfurthii) and western (P. t. verus) chimpanzees, but relatively little is known regarding home ranges of the other two subspecies (P. t. ellioti; P. t. troglodytes). In this study, we determined the home range size and space use of a habituated community (Rekambo) of central chimpanzees living in a habitat mosaic in Loango National Park, Gabon. Data on travel routes were collected during follows between January 2017 and April 2019 (N = 670,616 relocations, collected over 640 days and 5690 h of observation). We used three methods for calculating home range size (minimum convex polygon, kernel density estimation, and biased random bridges). We compare our estimates to those obtained from prior genetic and camera trap studies of the Rekambo community and contrast them with estimates from other chimpanzee communities of the four chimpanzee subspecies. Depending on the methodology used, the home range size of the Rekambo community ranged between 27.64 and 59.03 km. The location of the center of the home range remained relatively stable over the last decade, while the overall size decreased. The Rekambo home range is, therefore, one of the largest documented so far for chimpanzees outside savannah-woodland habitats. We discuss several explanations, including the presence of savannah, interspecies competition, and intercommunity interactions.
范围行为已在东部（Pan troglodytes schweinfurthii）和西部（P. t. verus）黑猩猩中进行了广泛研究，但对于其他两个亚种（P. t. ellioti；P. t. troglodytes）的家域范围知之甚少。在这项研究中，我们确定了居住在加蓬洛安哥国家公园生境镶嵌体中的中黑猩猩习惯性社区（Rekambo）的家域大小和空间利用情况。在 2017 年 1 月至 2019 年 4 月期间的跟踪期间收集了有关行进路线的数据（N=670,616 次定位，在 640 多天和 5690 小时的观察中收集）。我们使用了三种方法来计算家域大小（最小凸多边形，核密度估计和有偏随机桥）。我们将我们的估计值与 Rekambo 社区先前的遗传和相机陷阱研究中获得的估计值进行了比较，并将其与四个黑猩猩亚种的其他黑猩猩社区的估计值进行了比较。根据所使用的方法，Rekambo 社区的家域大小在 27.64 到 59.03 公里之间。家域中心的位置在过去十年中相对稳定，而总体规模却在缩小。因此，Rekambo 的家域是迄今为止在稀树草原-林地栖息地之外记录的最大的黑猩猩家域之一。我们讨论了几种解释，包括稀树草原的存在，种间竞争和社区间相互作用。
