Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Aythya marila Nom courant Greater Scaup
Nom population nearctica, North America
Aire de reproduction Alaska, Arctic Canada Aire de non-reproduction Coasts of N America, Great Lakes
Catégorie de la Liste Rouge Least Concern
Regions Ramsar North America
Notes Now listed by BOU as Aythya marila nearctica. (WPE4). Proposed namemariloides, sometimes applied to NE Asian and/or North American populations, is invalid, as it was attached to specimens of A. affinis; now replaced by name nearctica.

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 0 520,000 520,000 No quality assessment [R6]
WPE 4 0 0 561,000 561,000 No quality assessment [R656]
WPE 2 0 0 -1 -1 No quality assessment
WPE 1 0 0 -1 -1 No quality assessment
WPE 5 2011 2011 4,310,000 4,320,000 Expert opinion [S8115] [R1202]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1955 1998 STA No quality assessment [R6]
WPE 4 1955 1998 STA 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 STA No quality assessment [R6]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 5200
WPE 4 2006 5600
WPE 2 -1 -1 Not Set
WPE 1 -1 -1 Not Set
WPE 5 2012 43200

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.
  • R1202 - Zimpfer, N.L., Rhodes, W.E., Silverman, E.D., Zimmerman, G.S. and Richkus, K.D. 2011. Trends in Duck Breeding Populations, 1955-2011. U.S. Fish and Wildlife Service.

Notes

  • S8115 - Combined



Copyright Wetlands International 2012

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