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The site was identified as important in 2004 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
Baikal Teal Sibirionetta formosa	LC	winter	2004	present	A1, A4i
Grey Plover Pluvialis squatarola	VU	winter	2004	present	A4i
Kentish Plover Charadrius alexandrinus	LC	non-breeding	2004	present	A4i
Whimbrel Numenius phaeopus	LC	unknown	2004	present	A4i
Far Eastern Curlew Numenius madagascariensis	EN	passage	2004	present	A4i
Bar-tailed Godwit Limosa lapponica	NT	passage	2004	present	A4i
Black-tailed Godwit Limosa limosa	NT	passage	2004	present	A4i
Great Knot Calidris tenuirostris	EN	passage	2004	present	A4i
Dunlin Calidris alpina	NT	winter	2004	present	A4i
Terek Sandpiper Xenus cinereus	LC	passage	2004	present	A4i
Common Greenshank Tringa nebularia	LC	passage	2004	present	A4i
Spotted Greenshank Tringa guttifer	EN	passage	2004	present	A1, A4i
Saunders's Gull Saundersilarus saundersi	VU	winter	2004	present	A1, A4i
Relict Gull Larus relictus	VU	winter	2004	present	A1
A4iii Species group - waterbirds	n/a	unknown	2004	min 20,000 individuals	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2004) may differ.

Year	Protected Area	Designation	% overlap with IBA
2015	Chungnam AsanInjumyeon	야생생물보호구역	2

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)
Marine Neritic		major (>10)

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Asan Bay (including Asan-ho lake and Sapgyo-ho lake) (South Korea). Downloaded from https://datazone.birdlife.org/site/factsheet/asan-bay-(including-asan-ho-lake-and-sapgyo-ho-lake)-iba-south-korea on 22/11/2024.