This species occurs in the rainforests of Tablas and Sibuyan Islands in the Philippines at elevations between 300–1,200 m asl (Siler et al. 2012, Philippines Red List Assessment Workshop May 2017). In the previous assessment the species was recorded as occurring on Romblon Island, however there are no records of the species there to date despite surveys there (Siler et al. 2012, Philippines Red List Asssessment Workshop May 2017). Its extent of occurrence (EOO) is 3,541 km2 and all individuals are considered to occur at two threat-defined locations.
Habitat and Ecology
This species inhabits arboreal microhabitats in lower montane and lowland forests. Individuals were often collected among branches of ferns in both primary and secondary forest, and found on saplings and trees 1-6 m above the ground (Siler et al. 2012). Individuals were also observed calling 1-20 m apart, and its advertisement call is described by Siler et al. (2012). It breeds by direct development.
During surveys on Sibuyan in 2014, the species was found to be abundant (Mallari et al. 2014). However, due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
The subpopulation on the smaller islands of Tablas is particularly threatened by continuing habitat loss due to small-scale logging, conversion of lowland rainforest to agricultural land, and marble quarrying (Philippines Red List Assessment Workshop May 2017). On Sibuyan, massive deforestation was observed caused by collection for firewood and charcoal making, in addition to widespread artisanal gold mining (Philippines Red List Assessment Workshop May 2017).
On Sibuyan Island, the species occurs in Mount Guiting-guiting Natural Park. On Tablas Island, it occurs in Calatrava Watershed Forest Reserve.
The most important conservation measure needed at present is the improved protection of forests both inside and outside of protected areas, and the designation of the remaining rainforests as protected areas.
Further survey work is needed to determine the current population status of the species and additional, more exhaustive surveys are required on Romblon Island to determine its presence there.
Red List Status
Listed as Endangered, because its extent of occurrence (EOO) is 3,541 km2, it occurs in two threat-defined locations, and there is a continuing decline in the extent and quality of its forest habitat on Tablas and Sibuyan in the Philippines.
IUCN SSC Amphibian Specialist Group 2018. Platymantis lawtoni. The IUCN Red List of Threatened Species 2018: e.T58463A58480214. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T58463A58480214.en .Downloaded on 14 December 2018