Population information

Order name Anseriformes
Family name Anatidae
Scientific name Anser cygnoid Common name Swan Goose
Population name C & E Asia
Breeding range S Central Siberia, Mongolia, to NE China Non-breeding range E China, Korea
Red List Category Vulnerable
Ramsar regions Asia
Notes

Conservation Framework

Conservation framework Notes
EAAF Partnership
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 50,000 50,000 [R115]
WPE 2 0 0 50,000 50,000 [R115]
WPE 3 0 0 50,000 60,000 [R413]
WPE 4 0 0 60,000 100,000 [S3768] [R43]
WPE 5 2002 2009 60,000 78,000 Expert opinion [S7654] [R1284] [R1296] [R1297]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1980 1990 DEC [R115]
WPE 2 1980 1990 DEC [R115]
WPE 3 1980 2000 DEC [R68]
WPE 4 1980 2005 DEC [R64]
WPE 5 2000 2009 DEC Reasonable [R1297] [R1296] [R1284]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 500
WPE 2 1997 500
WPE 3 2002 550
WPE 4 2006 800
WPE 5 2012 680

References

  • R115 - Callaghan, D.A. and Green, A.J. 1993. Wildfowl at risk, 1993. Wildfowl 44: 149-169.
  • R413 - Liu Binsheng, Ji Weitao, Ding Xiansheng and Wu Jiandong, 2002. Report of the monitoring of Wintering Waterfowl at Poyang Lake N.R. in 2001/2002. China Crane News. Vol.6 No.1 June 2002.
  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R43 - Barter, M. et al. in preparation. Waterbird Survey of the Middle and Lower Yangtze River Floodplain in Late January and Early February 2005.
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org
  • R1284 - Yong Zhang, Lei Cao, Mark Barter, Anthony D Fox, Meijuan Zhao, Fanjuan Meng, Hongquan Shi, Yong Jiang, Wenzhong Zhu. 2010. Changing distribution and abundance of Swan Goose Anser cygnoides in the Yangtze River floodplain: the likely loss of a very important wintering site. Bird Conservation International, Volume: 21, Issue: 01, Pages: 36-48.
  • R1296 - Cao, L., Barter, M. and Lei, G. 2008. New Anatidae population estimates for eastern China: implications for flyway population sizes. Biol. Conserv. 141: 2301?2309.
  • R1297 - Cao Lei. 2012. In litt.

Notes

  • S3768 - 45, 44: 60,886 counted in Lower Yangtze Valley in 2004 and 61,178 in 2005.
  • S7654 - Counts from Lower Yangtze Valley, China (Poyang, Shengjin & Anhui Lakes) of 64,549 in 2008-2009, down from 91,931 in 2006-2007), 18 In South Korea and 2 each in Taiwan and Japan (Cao et al. 2008).



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on