Habitat preferences of the bornean horned frog Megophrys nasuta (Schlegel 1858) (Anura: megophryidae) in Sarawak

Ramlah Zainudin, . and Elvy Quatrin Deka, . and Aida Shafreena Ahmad Puad, . Habitat preferences of the bornean horned frog Megophrys nasuta (Schlegel 1858) (Anura: megophryidae) in Sarawak. pp. 25-37. ISSN 2672-7226

Habitat clearance changes the ecological conditions in adjacent remnants and reduces the range of frog dispersal. Movement between remnants is possible for widely distributed Megophrys nasuta thus this species could be a habitat generalist and able to disperse throughout fragmented areas. This study aims to determine habitat utilization of Sarawak M. nasuta as well as investigating correlation between specieshabitat preferences with ambient temperature and humidity. A total of 15 vegetation types 20 horizontal positions 16 vertical positions and 9 substrates were sampled from 2015-2017 throughout Sarawak. Chi-square and NMDS analyses showed that this species a habitat generalist yet specialized in its horizontal and vertical positions. The results supported the hypothesis of its wide dispersal throughout fragmented areas and implied that horizontal position plays an important role at determining their breeding site in an area. Megophrys nasuta showed a positive correlation to ambient temperature and vegetation type indicating species high tolerances with temperature at various forest types. The findings suggested that M. nasuta is a habitat generalist and a microhabitat specialist reflecting its response towards habitat fragmentation. Thus this study allows early identification of the species vulnerability towards extinction and targeting for species sustainability in near future.

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Abstract

Habitat clearance changes the ecological conditions in adjacent remnants and reduces the range of frog dispersal. Movement between remnants is possible for widely distributed Megophrys nasuta thus this species could be a habitat generalist and able to disperse throughout fragmented areas. This study aims to determine habitat utilization of Sarawak M. nasuta as well as investigating correlation between specieshabitat preferences with ambient temperature and humidity. A total of 15 vegetation types 20 horizontal positions 16 vertical positions and 9 substrates were sampled from 2015-2017 throughout Sarawak. Chi-square and NMDS analyses showed that this species a habitat generalist yet specialized in its horizontal and vertical positions. The results supported the hypothesis of its wide dispersal throughout fragmented areas and implied that horizontal position plays an important role at determining their breeding site in an area. Megophrys nasuta showed a positive correlation to ambient temperature and vegetation type indicating species high tolerances with temperature at various forest types. The findings suggested that M. nasuta is a habitat generalist and a microhabitat specialist reflecting its response towards habitat fragmentation. Thus this study allows early identification of the species vulnerability towards extinction and targeting for species sustainability in near future.

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Item Type:	Article
AGROVOC Term:	Frogs
AGROVOC Term:	Anura
AGROVOC Term:	Amphibians
AGROVOC Term:	Habitats
AGROVOC Term:	Ambient conditions
AGROVOC Term:	Environmental air temperature
AGROVOC Term:	Humidity
AGROVOC Term:	Forest floor vegetation
AGROVOC Term:	Forest canopy
AGROVOC Term:	Microhabitat
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8548

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