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Preliminary report on anurans in the forest fragment of Gamut, Tago, Surigao Del Sur, Philippines

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Research Paper 01/06/2019
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Preliminary report on anurans in the forest fragment of Gamut, Tago, Surigao Del Sur, Philippines

Arturo G Gracia Jr.
J. Bio. Env. Sci.14( 6), 196-205, June 2019.
Certificate: JBES 2019 [Generate Certificate]
Key: ConservationForest patchFrogsThreatsToads

Abstract

The Philippines is considered as a herpetofaunal center in the Southeast Asian region with high species richness and endemicity. The study investigates to document the anurans in the forest remnant in Gamut, Tago, Surigao del Sur. Transect and ocular survey for a total of 150 man-hours were carried out to document the species. A total of 10 species belonging to 8 genera under 6 families were recorded. Among these species, Pulchrana grandocula was the most abundant comprising 54% of the total population while the species Megophrys stejnegeri and Polypedates leucomystax were the least abundant with a relative abundance of 2% for each species. As for the species diversity, the anuran community shows moderate diversity index with Shannon-Weinner diversity index (H’) of 1.59 with species evenness (J’) of 0.69. Most of the anuran species observed were aquatic dwelling species wherein some are indicator of good water quality while the others indicate the presence of water pollution. Sixty percent of the total species are reported to be endemic that includes Fejervarya vittigera, Limnonectes leytensis, Limnonectes magnus, Megophrys stejnegeri, Platymantis guentheri, and Pulchrana. grandocula. With respect to the conservation status, only the species L. magnus was assessed as a Near-Threatened, however, 40% of the composition have a decreasing population trend. Major threat observed in the area includes water contamination due to deforestation. Despite the limitation of various ecological supports as manifestations gradual habitat loss, the habitat still houses various anuran species with high species endemicity.

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