Anurans species diversity and composition along the elevational gradient of the Balinsasayao Twin Lakes Natural Park, Negros Oriental, Philippines

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Research Paper 01/06/2019
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Anurans species diversity and composition along the elevational gradient of the Balinsasayao Twin Lakes Natural Park, Negros Oriental, Philippines

Wilbert A Aureo, Reizl P. Jose, Tomas D. Reyes, Lilibeth A. Bucol
J. Bio. Env. Sci.14( 6), 161-167, June 2019.
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Different habitat structures occupies different composition of anurans species which can be useful in determining their specific habitat requirements and preferences. The study assessed anurans species composition and diversity along an elevational gradient of Balinsasayao Twin Lakes Natural Park, Negros Oriental, Philippines. A line transect (1km) was used in the study using opportunistic approach in the collection of anurans in the established transect line per site where this was done both in daytime and nighttime. The results showed that anuran species richness and diversity were considerably higher in the sub montane compared to the montane and lowland. There were five species of anurans (i.e Platymantis negrosensis, Sanguirana acai, Rhacophorus pardalis, Fejervarya vittigera and Polypedates leucomystax) inhabiting the sub montane area and were not found both in montane and lowland areas while Kaloula conjuncta was observed only in lowland area. Furthermore, the morphometric measurements indicated that frogs found in the submontane area were bigger compared to the same frogs found in the montane and lowland. Finally, a change in species composition was observed along the successional gradient where the number of species observed in montane, submontane and lowland areas were S=2, S=11, and S=7, respectively.


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