email a friend
printable version
Location Philippines, Region IV
Central coordinates 121o 11.00' East  13o 10.00' North
IBA criteria A1, A2, A4i
Area 10,875 ha
Altitude 20 m
Year of IBA assessment 2001

Haribon Foundation

Site description Naujan Lake lies near to the north-east coast of Mindoro, approximately 8 km from Pinagsabangan. It is a large freshwater lake probably of volcanic origin, extending for about 14 km from north to south, and 7 km from east to west. The eastern shore is precipitous, but to the west the land rises gradually and there are large areas of shallow water with an abundant growth of aquatic vegetation. There are several hot springs along the eastern shore and the maximum depth of the lake is 45 m. The surrounding areas are covered in a mixture of forest, scrub and grassland with some orchards and coconut plantations. The MUFRC ( Multiple-use Forest Research Center) Experimental Forest lies to the south of the lake, on very steep and broken topography at 200-1,200m. It is in an old logging concession, which in 1980 was mostly covered by secondary growth of predominantly dipterocarp forest and a few patches of grassland and scrubland. However, no forest could be seen in this area in 1991 when viewed from Ilong Peak on Mt Halcon. The main sources of livelihood of the local people are fishing and farming. The species caught include milkfish, mullet, goby, mudfish, tilapia, carp, freshwater prawns and freshwater snails. Where the marshes permit cultivation, the land has been drained, cleared and planted with rice. Important agricultural crops include citruses, coconuts, rambutans and coffee. A very profitable duck raising industry thrives in the surrounding area.

Key Biodiversity Naujan Lake supports large numbers of ducks and other waterfowl, several of which may occur in internationally important numbers. Resident species include the threatened Philippine Duck, which formerly occurred here in substantial numbers but now appears to have declined. The area surrounding the lake used to have extensive lowland dipterocarp forests, notably the MUFRC Experimental Forest, and significant populations of several of Mindoro's restricted-range endemic species, including all of the lowland specialists characteristic of the Mindoro Endemic Bird Area. However, most if not all of this forest appears to have been cleared or degraded, and these species may be locally extinct.

Non-bird biodiversity: Naujan Lake has a rich fish fauna including several protected species. The Philippine crocodile Crocodylus mindorensis, an endangered species endemic to the Philippines, formerly occurred in the area, but may now be extinct on Mindoro. The estuarine crocodile Crocodylus porosus still occurs in the restricted zone of the National Park.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Philippine Duck Anas luzonica resident  2001  present  A1  Vulnerable 
Tufted Duck Aythya fuligula winter  2001  present  A4i  Least Concern 
Mindoro Bleeding-heart Gallicolumba platenae resident  2001  present  A1  Critically Endangered 
Mindoro Imperial-pigeon Ducula mindorensis resident  2001  present  A1  Endangered 
Spotted Imperial-pigeon Ducula carola resident  2001  present  A1  Vulnerable 
Black-hooded Coucal Centropus steerii resident  2001  present  A1  Critically Endangered 
Mindoro Hornbill Penelopides mindorensis resident  2001  present  A1  Endangered 
Ashy Thrush Zoothera cinerea resident  2001  present  A1  Vulnerable 
Scarlet-collared Flowerpecker Dicaeum retrocinctum resident  2001  present  A1  Vulnerable 
Philippine Cockatoo Cacatua haematuropygia resident  2001  present  A1  Critically Endangered 

IBA Monitoring

2001 high not assessed not assessed
Good - based on reliable and complete / representative data

Biological resource use fishing & harvesting aquatic resources - unintentional effects: large scale happening now majority/most of area/population (50-90%) moderate to rapid deterioration high

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Naujan Lake National Park 13,011 protected area contains site 10,875  
Naujan Lake National Park Wetlands of International Importance (Ramsar) 14,568 unknown 0  


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

Protection status This IBA overlaps with Naujan Lake National Park (21,655 ha), which was declared by Proc. No. 282 on 27 March 1956 and Proc. 335 on 25 January 1968. It is proposed as a Protected Landscape / Seascape under the NIPAS and a management plan is being prepared with the assistance of PAWB and SEARCA. The area was given Ramsar site status in 1999.

References Catibog-Sinha (1982); Davies et al. (1990); Diesmos and Pedregosa (1995); Scott (1989).

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Lake Naujan National Park. Downloaded from on 24/10/2016

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