Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Aythya affinis Nom courant Lesser Scaup
Nom population N & C America
Aire de reproduction North America, Central America Aire de non-reproduction
Catégorie de la Liste Rouge Least Concern
Regions Ramsar Neotropics North America
Notes

Réseau de conservation

Réseau de conservation Notes
Pas des Réseaux de conservation
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 0 0 2,994,000 2,994,000 No quality assessment [R6]
WPE 4 0 0 2,950,000 2,950,000 No quality assessment [S5554] [R656]
WPE 2 0 0 -1 -1 No quality assessment
WPE 1 0 0 -1 -1 No quality assessment
WPE 5 0 0 2,950,000 2,950,000 No quality assessment [S8116] [R656]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1955 1998 DEC No quality assessment [R6]
WPE 4 1955 1998 DEC No quality assessment [R6]
WPE 2 1986 1996 DEC No quality assessment [R657]
WPE 1 0 0 Unknown No quality assessment
WPE 5 1955 1998 DEC No quality assessment [R6]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 20000
WPE 4 2006 20000
WPE 2 -1 -1 Not Set
WPE 1 -1 -1 Not Set
WPE 5 2012 29500

References

  • R6 - Allen, George T., David F. Caithamer, and Mark Otto. 1999. A review of the status of greater and lesser scaup in North America. DMBM unbpublished report. 45pp.
  • R656 - U.S. Fish and Wildlife Service. 2005. Waterfowl Population Status, 2005. US Department of the Interior,Washington, D.C. http://www.fws.gov/migratorybirds/reports/status05/final_status_05.pdf
  • R657 - U.S. Fish and Wildlife Service and Canadian Wildlife Service. 1996. Waterfowl Population Status 1996. USFWS, Washington DC.

Notes

  • S5554 - For populations over 2 million birds, Ramsar Convention criterion 5 (20,000 or more waterbirds) applies.
  • S8116 - For populations over 2 million birds, Ramsar Convention criterion 5 (20,000 or more waterbirds) applies.



Copyright Wetlands International 2012

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