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1 document found tagged canopy gaps [X]
  • Title
    Present distribution, population status, and conservation of Western Hoolock Gibbons Hoolock hillock (Primates: Hylobatidae) in Namdapha National Park, India
    Journal Article
    A survey on the present distribution, population status and conservation of Western Hoolock Gibbon (Hoolock hoolock) was conducted from September 2006 to April 2007 in Namdapha National Park, Arunachal Pradesh, northeastern India. The data were recorded from 12 localities in the Park: Gibbon land, Baghnallah, Deban, 15th Mile, 16th Mile, Hawaghar, 19th Mile, Haldibari, Hornbill camp, Baranallah, Firmbase camp, and Embyong. A total of 50 individuals in 20 groups were recorded during the census by using direct and indirect methods. Out of 20 groups, nine groups were observed through direct visual observation. The remaining 11 groups were estimated by using indirect observation methods such as songs, calls, and branch shaking. The composition of the population was 19 adult males (38%), 19 adult females (38%), and 12 immatures (24%). The group size was estimated as 2.5 individuals per group. Anthropogenic disturbances observed in the gibbon habitat were habitat loss, hunting and poaching, canopy gaps, livelihood issues for local people, and livestock grazing.
    Kumar A., Mary P.P., Bagchie P. (2009). Journal of Threatened Taxa 4(1) pp. 203-210; doi:10.11609/JoTT.o1955.203-10