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2 documents found tagged tropical forests [X]
  • Title
    Tree species diversity in the Eastern Ghats of northern Andhra Pradesh, India
    Type
    Journal Article
    Description
    The present study was conducted to analyze tree species diversity in the tropical forests of the Eastern Ghats of northern Andhra Pradesh, India.  A total of 270 species of trees (≥15cm girth at breast height) pertaining to 177 genera belonging to 55 families were recorded.  Among the 270 species, 141 species were observed to be common, 78 were occasional and 51 species were rare in the study area.  Fabaceae was the dominant family with 33 species followed by Rubiaceae with 15 species and Malvaceae, Moraceae and Phyllanthaceae with 13 species each.  The genera with the highest number of species include Ficus (12 species), Diospyros (8 species), Albizia and Grewia (6 species each), Acacia and Bauhinia (5 species each).  Forty-five percent of the species were indigenous. This illustrates the diversity of the tree species in the studied area of the Eastern Ghats and also emphasizes the need for their conservation. 
    Attribution
    Naidu M. Tarakeswara, Kumar O. Aniel (2015). Journal of Threatened Taxa 8(7) pp. 7443-7459; doi:10.11609/jott.2112.7443-7459
  • Title
    Breeding biology of the Grey-headed Bulbul Pycnonotus priocephalus (Aves: Pycnonotidae) in the Western Ghats, India
    Type
    Journal Article
    Description
    The breeding biology of the endemic Grey-headed Bulbul Pycnonotus priocephalus was studied from 2003 to 2005 in Silent Valley National Park, Western Ghats, India. Nests were located during three field seasons from the arrival (December) to the dispersal of the birds (June) and collected data on various breeding parameters, availability of fruits and weather conditions. All nests were found in mid-elevation evergreen forests ranging from 900 to 1,400 m elevation. Breeding occurred in the drier months (January-May), which coincides with high fruit availability. Nest building lasted 3-8 days. Majority of the nests (72%; n = 39) were built on two plant species (Ochlandra travancorica and saplings of Syzygium sp.) and the mean nest height was 1.52 plus or minus 0.80 m (n = 52). Nests were randomly oriented around the nesting plants with a mean vector of orientation equaling 160.450. The clutch size averaged 1.53 plus or minus 0.50 eggs (range = 1-2; n = 47). Incubation and nestling periods were 13 plus or minus 0.87 (n = 9) and 12 plus or minus 0.50 (n = 9) days, respectively. Overall nest success was 10.79%. Nest success rates varied among incubation and nestling periods. Grey-headed Bulbul exhibit life-history traits associated with low productivity such as short breeding season, low clutch size, fewer broods per year and high predation rates indicating that deterioration of breeding habitats might seriously hamper the long-term survival of the species.
    Attribution
    Balakrishnan P. (2011). Journal of Threatened Taxa 1(3) pp. 1415-1424; doi:10.11609/JoTT.o2381.1415-24