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Location Philippines, Region III
Central coordinates 120o 29.00' East  14o 31.00' North
IBA criteria A1, A2
Area 23,688 ha
Altitude 0 - 1,420m
Year of IBA assessment 2001

Haribon Foundation



Site description The Mariveles Mountains are in southern Bataan province, near the entrance to Manila Bay (PH010), and rise steeply from sea level to 1,420 m. An area of forest is shown there on recent forest cover maps, which is reported to include both lowland and montane forest, including mossy forest. This includes old reforestation plantations in the former Lamao Arsenal and old growth forest at the peak of Mt Mariveles.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Philippine Hawk-eagle Nisaetus philippensis 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 
Philippine Dwarf-kingfisher Ceyx melanurus 2001  present [units unknown]  A1  Vulnerable 
Isabela Oriole Oriolus isabellae 2001  present [units unknown]  A1  Critically Endangered 
Celestial Monarch Hypothymis coelestis 2001  present [units unknown]  A1  Vulnerable 
Izu Leaf-warbler Phylloscopus ijimae 2001  present [units unknown]  A1  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Mariveles Watershed Forest Reserve 321 protected area contained by site 321  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest   major
Artificial - terrestrial   -

Other biodiversity Baseline surveys of the mammals and herpetofauna have yet to be conducted in the area.

Protection status The Mariveles Watershed Forest Reserve was established through R.A. 3092 in July 1996. It is proposed as a Natural Park under the NIPAS.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Mariveles mountains. Downloaded from http://www.birdlife.org on 24/04/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife