Sarania Bidyut, Devi Ashalata, Kumar Awadhesh, Sarma Kuladip, Gupta Atul Kumar
Department of Environmental Science, Tezpur University, Napaam, Tezpur, Assam, India.
Department of Forestry, North Eastern Regional Institute of Science and Technology (NERIST), Itanagar, Nirjuli, Arunachal Pradesh, India.
Am J Primatol. 2017 Feb;79(2):1-10. doi: 10.1002/ajp.22592. Epub 2016 Sep 19.
The present study reports the population of Macaca munzala in Tawang and West Kameng districts and its predictive distribution range in Arunachal Pradesh, estimated using ecological niche modeling. Environmental variables and occurrence data from a preliminary survey were used in the MaxEnt modeling, a statistical model to know the potential distribution area of the enigmatic species in Arunachal Pradesh. Later, a population survey was carried out in Tawang and West Kameng districts of the state following existing trails and paths. The distribution model revealed that only 2.4% of the total landmass of the state is potential distribution habitat range for M. munzala, whereas 10.19% of the total area of the two districts were shown to be potential habitat of the species. A total number of 971 individuals (including two solitary males) comprising 41 troops of M. munzala were recorded during the population survey. The mean troop size was 23.63 ± 1.21 individuals per troop ranging from 12 to 44 individuals. On average, M. munzala troops were comprised of juveniles (30.37%), adult females (23.83%), infants (18.22%), adult males (11.53%), sub-adult females (9.81%), and sub-adult males (6.23%). Our observed population size of M. munzala is higher in Tawang and West Kameng districts when compared with the earlier available records. This study showed the potential distribution of M. munzala based on environmental variables and the present population status in Tawang and West Kameng districts of Arunachal Pradesh, India.
本研究报告了西卡门地区和达旺地区的门扎猕猴种群及其在阿鲁纳恰尔邦的预测分布范围，该范围是通过生态位建模估算得出的。在最大熵建模（MaxEnt）中使用了环境变量和初步调查的出现数据，这是一种统计模型，用于了解阿鲁纳恰尔邦这种神秘物种的潜在分布区域。之后，沿着该邦达旺地区和西卡门地区现有的小径和道路进行了种群调查。分布模型显示，该邦仅2.4%的陆地总面积是门扎猕猴的潜在分布栖息地范围，而这两个地区10.19%的总面积被证明是该物种的潜在栖息地。在种群调查期间，共记录到971只个体（包括两只独居雄性），分属41个门扎猕猴群。平均每个猴群的规模为23.63±1.21只个体，范围在12至44只个体之间。平均而言，门扎猕猴群由幼猴（30.37%）、成年雌性（23.83%）、幼崽（18.22%）、成年雄性（11.53%）、亚成年雌性（9.81%）和亚成年雄性（6.23%）组成。与早期可得记录相比，我们观察到的门扎猕猴种群数量在达旺地区和西卡门地区更高。本研究展示了基于环境变量的门扎猕猴潜在分布以及印度阿鲁纳恰尔邦达旺地区和西卡门地区的当前种群状况。
