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3 documents found tagged population status [X]
  • Title
    Threat status of birds of Yamuna Nagar District, Haryana, India
    Type
    Journal Article
    Description
    Birds were surveyed in the Yamuna Nagar District, Haryana, India and the threat categories of the species observed were determined with the IUCN Red List.  A total of 185 species belonging to 46 families were observed.  Families Accipitridae, Passeridae, Corvidae and Scolopacidae dominated the list.  There were 13 species with various IUCN Red List categories.  One Critically Endangered species, the Red-headed Vulture Sarcogyps calvus, and two Endangered species Black-bellied Tern Sterna acuticauda and Egyptian Vulture Neophron percnopterus were observed.  A prerequisite for all the measures focussed on management and conservation of species is that the status and population trends of the target species must be known, and future work should be in this direction. 
    Attribution
    Kalsi Rajiv S., Sharma Sujata, Kalsi Meenu (2015). Journal of Threatened Taxa 3(7) pp. 7024-7028; doi:10.11609/jott.1904.7024-7028
  • Title
    CEPF Western Ghats Special Series Ecology, distribution and population status of Elaeocarpus venustus Bedd. (Oxalidales: Elaeocarpaceae), a threatened tree species from Agasthiyamalai Biosphere Reserve, southern Western Ghats, India
    Type
    Journal Article
    Description
    This paper deals with the ecology, population size, status of regeneration, habitat degradation and threat status of Elaeocarpus venustus Bedd. An endemic and threatened tree species restricted to Agasthiyamalai Biosphere Reserve, southern Western Ghats, India. The population sites of this species in the study area were recorded using Global Positioning System and mapped using Arc GIS software. The population of this species is highly fragmented due to anthropogenic activities. The total stem count in all population sites from the study area was carried out to understand the population structure. A total of 181 saplings were recorded from the entire study area of which 180 are from a single site. Nearly 64% of the stems recorded in this study are mature stems. Poor regeneration was seen in population sites that were highly disturbed. In spite of good adult population, the low number of saplings shows poor germination of seeds and establishment of seedlings.
    Attribution
    Irwin S.J., Narasimhan D., Madha Suresh V. (2013). Journal of Threatened Taxa 9(5) pp. 4378-4384; doi:10.11609/JoTT.o3309.4378-84
  • Title
    Present distribution, population status, and conservation of Western Hoolock Gibbons Hoolock hillock (Primates: Hylobatidae) in Namdapha National Park, India
    Type
    Journal Article
    Description
    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.
    Attribution
    Kumar A., Mary P.P., Bagchie P. (2009). Journal of Threatened Taxa 4(1) pp. 203-210; doi:10.11609/JoTT.o1955.203-10