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Marian Dara T. Tagoon, Joshua L. Donato, Treaseur B. Susulan, Karyn Chrislene A. Vitor, Samuel Herbert T. Mamora, Elsa May Delima-Baron,
Volume 4, Issue 4 (12-2022)
Abstract

Data on anurans in Davao City watersheds remains depauperate. This study provides the first account of anurans of the Panigan-Tamugan watershed using visual encounter survey (VES) and microhabitat searches along fifteen 10 × 10 m belt transects. A total of 14 species belonging to 11 genera and five families were recorded for all three sampling sites in the Panigan-Tamugan Watershed. Eleven out of 14 anurans species documented in this survey are endemic to the Philippines. Anuran families recorded during the survey included Bufonidae Gray (n= 3), Dicroglossidae Anderson (n= 4), Megophryidae Bonaparte (n= 2), Ranidae Batsch (n= 1), and Rhacophoridae Hoffman (n= 4). Additional records of anurans from this study, namely Fejervarya vittigera (Wiegmann), Occidozyga laevis (Günther), Pelophryne brevipes (Peters), and Philautus worcesteri (Stejneger), increased the number of species known from watershed areas of Davao City, as they were not reported in previous inventories conducted in the city. Species richness data may not necessarily reflect the true number of species in the site. Future studies should include an increased number of transects and man hours. Although the list comprises the limited information on this taxon in watersheds, more inventories are necessary for a full understanding of anuran composition in the city's several watersheds.

Khean Harvey S. Acuevas, Dave P. Buenavista,
Volume 5, Issue 3 (10-2023)
Abstract

The Center for Ecological Development and Recreation (CEDAR) is an ecotourism site comprised of natural and human-modified ecosystems in Bukidnon, Philippines. With very little existing research on the influence of human-modified ecosystems on amphibian assemblages in the Philippines, we designed this study to evaluate amphibian assemblages in CEDAR. Using a combination of transects sampling, active searching, and auditory samplings, amphibian samplings were conducted at three sites: a human-modified area, a dipterocarp forest, and the Dila River System. A total of 425 individuals of 18 species from 13 genera and 7 families were documented. The family Ceratobatrachidae was the most represented group, with four species. Out of 18 species, 14 (78%) were Philippine endemics, indicating a high rate of amphibian endemism at CEDAR. In terms of IUCN conservation status, 14 out of 18 species were classified as Least Concern and two as Near Threatened, while two have undetermined conservation status. The Shannon-Weiner and Gini-Simpsons Diversity values revealed that the Human-modified area had the highest diversity compared to the Dila River System and dipterocarp forest. Surprisingly, the human-modified area in CEDAR was found to be the habitat of many anuran species, in particular, a number of generalist species, whilst some specialist species were restricted to natural habitats like the dipterocarp forest and Dila River System. The high amphibian diversity in the human-modified area requires further field studies; hence, additional amphibian samplings are recommended. Long-term wildlife evaluation and monitoring should be carried-out in CEDAR to facilitate the conservation of amphibian populations and their natural habitats in this area.


 

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