Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Cygnus cygnus Nom courant Whooper Swan
Nom population E Asia
Aire de reproduction Central & E Siberia to NE China Aire de non-reproduction E Asia
Catégorie de la Liste Rouge Least Concern
Regions Ramsar Asia
Notes

Réseau de conservation

Réseau de conservation Notes
EAAF Partnership
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 25,000 100,000 No quality assessment [R714]
WPE 2 0 0 30,000 30,000 No quality assessment [R667]
WPE 3 0 0 60,000 60,000 No quality assessment [R455]
WPE 4 0 0 60,000 60,000 No quality assessment [R455]
WPE 5 0 0 60,000 60,000 No quality assessment [R455]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown No quality assessment
WPE 2 0 0 Unknown No quality assessment
WPE 3 0 0 Unknown No quality assessment
WPE 4 0 0 Unknown No quality assessment
WPE 5 0 0 Unknown No idea

Population 1% level

Publication Yearset 1 percent Note
WPE 1 -1 -1 Not Set
WPE 2 1997 300
WPE 3 2002 600
WPE 4 2006 600
WPE 5 2012 600

References

  • R714 - Yanagisawa, N., Fujimaki, Y. and Higuchi, H. (pers. comm.). 1993. Japanese data on waterbird population sizes, summarised for IWRB.
  • R667 - Unpublished information supplied by Wetlands International Specialist Groups, 1997.
  • R455 - Miyabayashi, Y. and Mundkur, T. 1999. Atlas of Key Sites for Anatidae in the East Asian Flyway. Wetlands International ? Japan ? Tokyo, and Wetlands International ? Asia Pacific, Kuala Lumpur. 148 pp.

Notes




Copyright Wetlands International 2012

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