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Location Curaçao (to Netherlands)
Central coordinates 68o 53.04' West  12o 5.45' North
IBA criteria A4i, B4i
Area 432 ha
Altitude 0 - 25m
Year of IBA assessment 2007

Site description The Janthiel lagoon conservation area consists of about 80 hectares of hypersaline lagoons surrounded by some 228 hectares of woodlands. There is also one spring and several abandoned water catchment dams which harbor freshwater during the rainy season.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Common Tern Sterna hirundo breeding  2002  75 breeding pairs  medium  A4i  Least Concern 
Least Tern Sternula antillarum breeding  2006  10-60 individuals  poor  B4i  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Jan Thiel Lagoon National Park 310 protected area contained by site 310  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Saline lakes  30%
Shrubland Arid lowland scrub  70%

Other biodiversity The Janthiel conservation area is home to at least ten of the eleven Leeward Dutch Antilles endemic subspecies of birds that breed on Curaçao. An impressive bird list has been assembled for the area, including such rare and endangered raptors as the White-Tailed Hawk and Crested Caracara. Other endemics of the Leeward Dutch Antilles are well represented amongst the reptiles and land snails.

Protection status This site, totalling 310 ha, was legally designated as a conservation area in the island development plan for Curaçao, as ratified by island government in 1997. The owner of most of the property has requested Carmabi to manage the area and financed the writing of a management plan (Debrot and Pors 2001). Government has approved the plan and the local stake-holders (hotels and resorts surrounding the lagoon) would like the plan implemented

Further web sources of information 

Site profile from Important Bird Areas in the Caribbean: key sites for conservation (BirdLife International 2008)

References Beers, C. E., J. de freitas and P. Ketner(1997);Cuppens, M. and J. Vogels (2004);Debrot, A. O., C. Boogerd and D. van den Broeck (2002);Debrot, A. O. and J. A. de Freitas (1991);Debrot, A. O. and J. A. de Freitas (1999);Debrot, A. O. and L. P. J. J. Pors (2001);Smelter, M. (2005);Voous, K. H. (1983)

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Jan Thiel Lagoon, Curaçao. Downloaded from on 22/10/2014

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