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Table 2 The results of waterbird census at the Sihwa Lake between 2003 and 2012

From: Influence of land use change on the waterbird community of Sihwa Lake, Republic of Korea

Species No. of detected individuals (mean ± SD) Migration pattern IUCN list catagory Korean endangered status
Sp. Su Au Wi
Tachybaptus ruficollis 60.2 ± 42.0 69.4 ± 42.5 82.2 ± 44.6 80.9 ± 47.3 R LC  
Podiceps cristatus 14.0 ± 9.2 17.0 ± 9.2 31.0 ± 9.1 217.0 ± 9.7 WV/Rd LC  
Phalacrocorax carbo 78.0 ± 98.8 965.0 ± 95.3 WV LC  
Phalacrocorax capillatus 108.0 ± 8.4 206.0 ± 8.3 58.0 ± 8.3 R DD  
Ardea cinerea 150.0 ± 37.2 692.0 ± 37.1 217.0 ± 37.2 59.0 ± 37.2 SV/R LC  
Egretta alba 103.0 ± 105.8 1415.0 ± 105.1 1828.0 ± 102.7 76.0 ± 95.2 SV/R LC  
Egretta intermedia 9.0 ± 8.5 119.0 ± 8.5 117.0 ± 8.0 SV LC  
Egretta garzetta 86.0 ± 19.6 367.0 ± 19.6 314.0 ± 19.5 68.0 ± 19.3 SV/R LC  
Nycticorax nycticorax 12.0 ± 4.1 73.0 ± 4.0 60.0 ± 4.0 SV LC  
Butorides striatus 6.0 ± 2.7 70.0 ± 2.6 37.0 ± 2.7 SV LC  
Ixobrychus sinensis 15.0 ± 0.6 SV DD  
Bubulcus ibis 333.0 ± 27.1 SV LC  
Anser albifrons 376.0 ± 26.7 WV LC  
Anser fabalis 8.0 WV LC  
Cygnus cygnus 21.0 WV LC II
Grus monacha 41.0 WV VU II
Platalea leucorodia 73.0 ± 48.8 WV LC II
Platalea minor 181.0 ± 100.2 SV/R EN I
Tadorna ferruginea 420.0 ± 25.7 WV DD  
Tadorna tadorna 1302.0 ± 132.9 WV LC  
Anas falcata 497.0 ± 184.4 WV LC  
Anas penelope 1830.0 ± 572.6 WV LC  
Anas crecca 492.0 ± 181.9 WV LC  
Anas platyrhynchos 8998.0 ± 5662.6 6228.0 ± 5665.5 80,198.0 ± 5654.4 78,650.0 ± 5625.6 WV/R LC  
Anas strepera 291.0 WV LC  
Anas poecilorhyncha 12,350.0 ± 7159.9 14,640.0 ± 7177.2 138,100.0 ± 7170.5 60,490.0 ± 7148.7 WV/R LC  
Anas acuta 2439.0 ± 537.1 WV DD  
Anas clypeata 641.0 ± 178.9 WV LC  
Aythya ferina 176,010.0 ± 5396.8 WV VU  
Aythya fuligula 1354.0 ± 177.2 WV LC  
Aythya marila 17.0 WV LC  
Bucephala clangula 95.0 ± 5.2 WV LC  
Mergus merganser 903.0 ± 69.6 WV LC  
Gallinula chloropus 31.0 ± 2.1 SV/R LC  
Fulica atra 1135.0 ± 93.4 W/R LC  
Himantopus himantopus 1.0 ± 2.8 5.0 ± 2.8 PM/SV LC  
Haematopus ostralegus 6.0 ± 1.4 R DD II
Charadrius placidus 31.0 ± 3.8 R LC  
Charadrius dubius 3.0 ± 0.9 13.0 ± 0.9 7.0 ± 0.9 SV LC  
Pluvialis squatarola 80.0 ± 6.8 94.0 ± 7.1 PM LC  
Charadrius alexandrinus 102.0 ± 12.3 121.0 ± 11.7 PM/R LC II
Limosa limosa 27.0 ± 5.2 47.0 ± 5.2 PM DD  
Limosa lapponica 261.0 ± 33.5 370.0 ± 34.5 PM LC  
Numenius arquata 1944.0 ± 169.4 1878.0 ± 162.8 PM NT  
Numenius madagascariensis 352.0 ± 23.8 343.0 ± 24.8 PM LC II
Numenius phaeopus 163.0 ± 10.1 152.0 ± 10 PM LC  
Tringa nebularia 194.0 ± 18.6 55.0 ± 18.9 312.0 ± 18.7 PM LC  
Tringa erythropus 13.0 PM LC  
Arenaria interpres 7.0 PM LC  
Calidris tenuirostris 240.0 ± 28.9 197.0 ± 28.9 PM VU  
Tringa glareola 3.0 PM LC  
Tringa ochropus 7.0 ± 0.5 WV LC  
Actitis hypoleucos 13.0 ± 0.7 13.0 ± 0.7 SV LC  
Xenus cinereus 39.0 ± 4.4 52.0 ± 4.4 PM LC  
Gallinago gallinago 1.0 PM LC  
Calidris alpina 3015.0 ± 229.3 3604.0 ± 233.8 PM LC  
Larus crassirostris 2577.0 ± 216.7 2422.0 ± 213.5 2632.0 ± 210.2 5560.0 ± 208.3 R LC  
Larus argentatus 319.0 ± 17.8 WV LC  
Larus cachinnans 63.0 ± 4.4 WV DD  
Larus schistisagus 8.0 ± 4.2 WV LC  
Larus saundersi 1126.0 ± 34.9 WV/R VU II
Larus ridibundus 218.0 ± 9.5 WV LC  
Sterna albifrons 13.0 SV/PM LC  
Total 30,955.0 ± 15,713.1 27,882.0 ± 15,752.0 230,787.0 ± 15,730.1 334,810.0 ± 15,837.0    
  1. Sp. spring, Su. summer, Au. autumn, Wi. winter, R resident, SV summer visitor, PM passage migrant, WV winter visitor, DD data deficient, LC least concern, VU vulnerable, NT near threatened, EN endangered, WV/R most of the population/some population