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The site was identified as important in 2021 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 List1	Season	Year(s)	Size	IBA criteria
Whimbrel Numenius phaeopus	LC	non-breeding	2016-2021	500 individuals	B3a
Grey Gull Larus modestus	LC	non-breeding	2016-2021	2,000-5,000 individuals	A4, B3a
Franklin's Gull Larus pipixcan	LC	non-breeding	2016-2021	12,000-25,000 individuals	A4, B3a
Belcher's Gull Larus belcheri	LC	resident	2016-2021	200-500 individuals	A4, B3a
Elegant Tern Thalasseus elegans	NT	non-breeding	2016-2021	5,000-12,000 individuals	A4, B1a, B3a

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2021) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2021. 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	-	moderate (70-90%)	very unfavourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	likely in short term (within 4 years)	whole area/population (>90%)	slow but significant deterioration	high
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	very rapid to severe deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	The conservation measures needed for the site are being comprehensively and effectively implemented	high

Year	Protected Area	Designation	% overlap with IBA
2009	Humedal de la Desembocadura del Río Lluta	Santuario de la Naturaleza	10

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		-
Marine Intertidal		-
Marine Neritic		-
Shrubland		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Desembocadura del Río Lluta (Chile). Downloaded from https://datazone.birdlife.org/site/factsheet/desembocadura-del-río-lluta-iba-chile on 23/11/2024.