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The site was identified as internationally important for bird conservation in 2010 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year[s] of estimate)	Size	IBA criteria
Grey Gull Larus modestus	LC	non-breeding (2008)	4,000 birds	A4i
Franklin's Gull Larus pipixcan	LC	non-breeding (2001)	min 10,000 birds	A4i
Belcher's Gull Larus belcheri	LC	non-breeding (2001)	50–800 birds	A4i
Inca Tern Larosterna inca	NT	breeding (2008)	100 birds	A1
Elegant Tern Thalasseus elegans	NT	non-breeding (2008)	700 birds	A1

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2015) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Marine Coastal/Supratidal	-	good (>90%)	moderate

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	happe­ning now	whole of popul­ation/area (>90%)	no or slight decline (<1% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Little/none of area covered (<10%)	No management planning has taken place	Substantive conservation measures are being implemented, but these are not compre­hensive and are limited by resources and capacity	low

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Costa sur de Arica (Chile). Downloaded from https://datazone.birdlife.org/site/factsheet/costa-sur-de-arica-iba-chile on 05/12/2024.