Population information

Order name Anseriformes
Family name Anatidae
Scientific name Cygnus columbianus Common name Tundra Swan
Population name jankowskii
Breeding range Central & E Siberia Non-breeding range East Asia
Red List Category Least Concern
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 1987 1991 30,000 30,000 [R519]
WPE 2 1987 1991 30,000 30,000 [R519]
WPE 3 0 0 86,000 86,000 [R690]
WPE 4 0 0 92,000 92,000 [S3624] [R43]
WPE 5 2007 2007 92,000 110,000 Expert opinion [S6454] [R1296]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1977 1991 DEC [R519]
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 0 0 Unknown No idea

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 300
WPE 2 1997 300
WPE 3 2002 860
WPE 4 2006 920
WPE 5 2012 1000

References

  • R519 - Perennou, C.P., Mundkur, T. and Scott, D.A. 1994. The Asian Waterfowl Census 1987-1991: distribution and status of Asian waterfowl. IWRB Spec. Publ. No. 24; AWB Spec. Publ. No. 86. Slimbridge, UK and Kuala Lumpur, Malaysia.
  • R690 - Weitao, Ji, Wu Jiandong, Yi Wusheng, Huang Zuyou and Wu Xudong (2001). Aerial survey of waterfowl at Poyang Lake conducted by the Poyang Lake N.R. China Crane News 5(1):16-17.
  • R43 - Barter, M. et al. in preparation. Waterbird Survey of the Middle and Lower Yangtze River Floodplain in Late January and Early February 2005.
  • 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.

Notes

  • S3624 - 44: 65,114 counted during surveys of lower Yangtze Valley in 2005. 461 report an average of 26,000 in Japan.
  • S6454 - Cao et al. (2008) estimated 110,000 birds including 81,000 in China and 30,350 in Japan.



Copyright Wetlands International 2012

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