|Location||Philippines, Region IV|
|Central coordinates||121o 57.00' East 13o 25.00' North|
|IBA criteria||A1, A2|
|Altitude||0 - 1,153m|
|Year of IBA assessment||2001|
Ornithological information Several of the threatened and restricted-range birds of the Luzon Endemic Bird Area have been recorded on Marinduque, but the ornithological coverage there appears to have been rather sparse and more survey work may locate more of these species. There is a population of the threatened Green Racquet-tail on the island, but it is believed to be small. Six subspecies of birds are endemic to Marinduque, Amethyst Brown-dove Phapitreron amethystina imeldae, Blackish Cuckoo-shrike (see above), White-browed Shama Copsychus luzoniensis shemleyi, Mangrove Blue Flycatcher Cyornis rufigastra marinduquensis, Purple-throated Sunbird Nectarinia sperata marinduquensis and Mountain White-eye Zosterops montanus gilli.
Site description Marinduque is an island of 172,700 ha off the southwestern coast of Luzon. It is hilly and reaches a maximum altitude of 1,153 m. Two small blocks of old growth forest are shown on recent forest cover maps around the highest peaks in the center and south of the island. Most of the forest remaining on the island is likely to be lowland in type, with some montane forest above c.1,000 m. This IBA includes the small Torrijos Watershed Reserve, which has an area of 105 ha.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Philippine Duck Anas luzonica||-||2001||present [units unknown]||-||A1||Vulnerable|
|Philippine Cockatoo Cacatua haematuropygia||-||2001||present [units unknown]||-||A1||Critically Endangered|
|Green Racquet-tail Prioniturus luconensis||-||2001||present [units unknown]||-||A1||Vulnerable|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Marinduque||Wilderness Sanctuary||0||protected area contained by site||8,828|
|Torrijos||Watershed Forest Reserve||112||protected area contained by site||112|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial landscapes (terrestrial)||-|
Other biodiversity Threatened endemic mammals recorded on Marinduque include the Philippine Pygmy Fruit Bat Haplonycteris fischeri and the Southern Luzon Giant Cloud Rat Phloeomys cumingi, which was last recorded in 1890 but may still be present in the area. The Philippine Warty Pig Sus philippensis, which used to be common is now extinct in this IBA. Other endemic mammals like Philippine Pygmy Roundleaf Bat Hipposideros pygmaeus, Philippine Nectar Bat Eonycteris robusta and Large Rufous Horseshoe Bat Rhinolophus rufus are also found in this IBA. Endemic herpetofauna so far recorded in this IBA are Giant Philippine Frog Rana magna macrocephala and Truncate-toed Chorus Frog Kaloula conjuncta. The waters around Marinduque are also known to support threatened animals, such as Olive Ridley Turtle Lepidochelys olivacea, Green Turtle Chelonia mydas, Hawksbill Turtle Eretmochelys imbricata and Spinner Dolphin Stenella longirostris.
Management considerations The remaining forests on the island are presumably under heavy pressure from clearance for agriculture and the collection of forest products.
Protection status The IBA includes the small (105 ha) Torrijos Watershed Forest Reserve established by virtue of Proc. No. 463 on 6 April 1932.
Conservation response Surveys are required in this IBA, to investigate both the extent and quality of the remaining habitats and the current status of the threatened and restricted-range birds and other biodiversity.
References Alcala and Brown (1998).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Marinduque Wildlife Sanctuary. Downloaded from http://www.birdlife.org on 18/06/2013
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