Importance, threats and conservation status
Wetlands International, 2002
ISBN 90 5882 009 2
4. Shorebirds occuring in internationally important numbers at Yellow Sea sites (continued)
4.4 Species accounts (continued)
Subspecies Worldwide 2 (arquata and orientalis); Yellow Sea 1 (orientalis).
Distribution of N. a. orientalis in the EAAF
Breeding: e. and w. of L. Baikal.
Non-breeding: Coastal. se. and e. Asia, including e. and s. China, Japan and South Korea.
Usage and importance of Yellow Sea
Occurrence: Intertidal areas. NM and SM Widespread, particularly common in China from the Bo Hai to the North Korean border, and in nw. South Korea. NB Common in China in Tianjin Municipality and s. from Yancheng NNR, and along w. and s. coasts of South Korea. Numbers are probably underestimated, as this species is often spread thinly over upper tidal flats which are difficult to count effectively.
Movements: NM Main passage in April. SM Extended passage period from August to October, peaking in South Korea during October when migrants and non-breeding birds occur together. Large numbers (15 000) present in mid-August in Bohai Wan, declining to 1 350 by mid-September. Many of birds seen on both NM and SM in South Korea are believed to be those spending non-breeding period there.
Significance of Yellow Sea: The Yellow Sea is extremely important for this species as it supports about 80% of the estimated flyway population during NM. Large numbers also occur on SM and during the NB season.
Key sites: 15 sites of international importance have been identified, 8 in South Korea and 7 in China; 7 of the sites are important during NM, 11 during SM and 6 in the NB season (see site location maps below). 5 sites are important during both NM and SM (Huang He NNR, Tianjin Municipality, Shi Jiu Tuo, Shuangtaizihekou NNR and Namyang Man). The Bo Hai region supports particularly large concentrations during both NM and SM (probably >50% of the estimated flyway population); whilst Namyang Man during both NM and SM, and Geum Gang Hagu during SM, support >5% of the population.
Status of key sites: 4 of the Chinese sites and a small part of 1 of the South Korean sites (Dongjin Gang Hagu) are within Protected Areas. The Dongjin and Mangyeung estuaries are currently being reclaimed as part of the Saemangeum Reclamation Project.
Major gaps in knowledge: More data is needed on distribution and abundance in Bohai Wan, which appears to be the key staging region on both NM and SM. Incomplete geographical and temporal coverage in China. No information from North Korea.
EAAF POPULATION ESTIMATE: 35 000
Status: Passage migrant and non-breeding visitor
Estimated minimum numbers:
NM: South Korea: 2 400; China: 30 000.
SM: South Korea: 5 900.
NB: South Korea: 2 700.
INTERNATIONALLY IMPORTANT SITES (and Protected Area status)
South Korea: 8 (part of 1)
China: 7 (4)
Site count references
- Zhu et al. 2000
- RSPB Sabbatical Report 2002
- S.P Zhang in litt.
- Yi & Kim in prep.
- Barter et al. 2000d
- Barter et al. 2000c
- F. Heintzenberg in litt.
- Wang et al. 1991
- Brazil 1992
- Wang 1997
- Moores 1999a
- Wang & Barter 1998
|1||Dong Sha||8||Ganghwa Do|
|2||Yancheng NNR||9||Yeong Jong Do|
|3||Huang He NNR||10||Namyang Man|
|4||Tianjin Municipality||11||Geum Gang Hagu|
|5||Shi Jiu Tuo||12||Mangyeung Gang Hagu|
|6||Shuangtaizihekou NNR||13||Dongjin Gang Hagu|
|7||Yalu Jiang NNR||14||Aphae Do|
|15||Nakdong Gang Hagu|
|1||Huang He NNR||China||9 766||1|
|2||Shi Jiu Tuo||China||3 400||2|
|3||Tianjin Municipality||China||2 000||3|
|4||Namyang Man||South Korea||1 880||4|
|5||Shuangtaizihekou NNR||China||1 535||5|
|6||Yalu Jiang NNR||China||563||6|
|7||Ganghwa Do||South Korea||363||4|
|1||Shi Jiu Tuo||China||15 000||7|
|2||Geum Gang Hagu||South Korea||2 800||4|
|3||Namyang Man||South Korea||2 451||4|
|4||Tianjin Municipality||China||2 000||3|
|5||Huang He NNR||China||912||8|
|6||Yeong Jong Do||South Korea||852||4|
|7||Dongjin Gang Hagu||South Korea||775||4|
|9||Mangyeung Gang Hagu||South Korea||530||4|
|10||Nakdong Gang Hagu||South Korea||479||4|
|1||Tianjin Municipality||China||2 000||3|
|2||Namyang Man||South Korea||1 148||11|
|5||Aphae Do||South Korea||397||11|
|6||Geum Gang Hagu||South Korea||350||11|