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Yubu Island, the Important Waterbird Habitat on the West Coast of Korea and Its Conservation
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  • Journal title : Ocean and Polar Research
  • Volume 24, Issue 1,  2002, pp.115-121
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2002.24.1.115
 Title & Authors
Yubu Island, the Important Waterbird Habitat on the West Coast of Korea and Its Conservation
Lee, Han-Soo; Yi, Jeong-Yeon; Kim, Hwa-Chung; Lee, Si-Wan; Paek, Woon-Kee;
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 Abstract
Yubu Island is located within the estuary of the Geum River, South Chungcheong Province , Korea. The island is surrounded by a broad and sandy mudflat, which is typical in the west coast of Korea, and is located 4km off from Gunsan City. Less than 100 humans live on the island, occupying 30 houses. After we discovered that this island was a very important waterbird habitat especially for the East Asian subspecies of the Eurasian oystercatcher, Haematopus ostralegus osculans. Waterbirds were monitored once every month from August 1999 to July 2000. The highest number of oystercatchers counted was 3,200 in December 1999, and the birds seemed to remain in the area continuously from September to next February. About 200 breeding and non-breeding birds remained during the breeding season. In August, early migrants returned to the island, with the number reaching 1,060 individuals. This island is also very important for other waterbirds. Endangered or significant species occurring at this site, and their maximum counts were: chinese egret Egretta eulophotes (5), black-faced spoonbill Platalea minor (17), brant Branta bernicla (1), common shelduck Tadorna tadorna (8,000), hooded crane Grus monacha (2), spoon-billed sandpiper Ewynorhynchus pygmeus (7), dunlin Calidris alpina (6,500), great knot Calidris tenuirostris (24,000), far eastern curlew Numenius madagascariensis (2,500), spotted greenshank Tringa guttifer (4) and Saunders`s gull Larus saundersi (1,200). During the 12 month survey period, we observed 52 waterbird species and the total of the maximum counts for the separate species was 73,308, implying that perhaps 150,000 birds could be using the immediate area, if a turnover rate of 2 was assumed.
 Keywords
Yubu Island;waterbird;migration;mudflat;reclamation;
 Language
English
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