|Scientific Name:||Gracixalus supercornutus (Orlov, Ho & Nguyen, 2004)|
Philautus supercornutus (Orlov, Ho & Nguyen, 2004)
|Taxonomic Source(s):||Frost, D.R. 2015. Amphibian Species of the World: an Online Reference. Version 6.0. New York, USA. Available at: http://research.amnh.org/herpetology/amphibia/index.html.|
|Red List Category & Criteria:||Near Threatened ver 3.1|
|Assessor(s):||IUCN SSC Amphibian Specialist Group|
|Reviewer(s):||Angulo, A. & Luedtke, J.|
|Contributor(s):||Rowley, J.L. & Nguyen, T.Q.|
|Facilitator/Compiler(s):||Leung, H. & Luedtke, J.|
Listed as Near Threatened since the species has an area of occupancy (AOO) of 2,977 km2, an extent of occurrence (EOO) of 21,941 km2, and there is ongoing degradation and loss of its habitat, which may be causing the population to decrease. It is thus close to qualifying as Vulnerable B1ab(iii)+B2ab(iii).
|Previously published Red List assessments:|
This species occurs in montane forests in central Viet Nam (Thua Thien-Hue, Da Nang, Quang Nam, Kon Tum and Gia Lai Provinces) at relatively high elevations, between 1,100-1,905 m asl (Orlov et al. 2004, Rowley et al. 2011, J. Rowley pers. comm. 2015). The type locality is Bach Ma National Park, Viet Nam (Orlov et al. 2004). It also occurs in the provinces of Salavan and Khammouane in southern Lao PDR (Luu et al. 2014). Because suitable habitat is widely available, its range has been projected beyond known sites to include these areas of suitable habitat. These areas were excluded from the estimate of extent of occurrence (EOO) resulting in a value of 21,941 km2, within which its area of occupancy (AOO) is estimated to be 2,977 km2.
Native:Lao People's Democratic Republic; Viet Nam
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The abundance and population trends of this species are unknown. However, it is not thought to be severely fragmented and, due to ongoing habitat loss, its population is suspected to be decreasing.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:|
It occurs in high elevation montane evergreen forests where it has been observed on leaves and branches of low-lying vegetation above shallow, non-flowing water bodies (Orlov et al. 2004, Rowley et al. 2011, Luu et al. 2014, J. Rowley pers. comm. 2015). This usually includes shallow pools and puddles that are near streams (Orlov et al. 2004, Rowley et al. 2011, Luu et al. 2014, J. Rowley pers. comm. 2015), although the species has also been observed in large numbers on emergent vegetation in a large swamp (J. Rowley pers. comm. 2015).
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Movement patterns:||Not a Migrant|
|Use and Trade:||There are no records of the species being utilized.|
Due to human population growth and increasing demand for agricultural and timber products as well as road construction, the loss of montane forest habitat is ongoing and expected to increase throughout central Viet Nam (Meyfroidt et al. 2013, Truong Nguyen pers. comm. 2015). Thus, habitat loss due to expanding human settlements, shifting and small-scale agriculture, logging and roads is a threat to this forest-dependent species.
|Citation:||IUCN SSC Amphibian Specialist Group. 2016. Gracixalus supercornutus. The IUCN Red List of Threatened Species 2016: e.T61890A47152824.Downloaded on 26 February 2018.|
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