Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Spatula hottentota Nom courant Hottentot Teal
Nom population Lake Chad Basin
Aire de reproduction Lake Chad Basin Aire de non-reproduction
Catégorie de la Liste Rouge Least Concern
Regions Ramsar Africa
Notes

Réseau de conservation

Réseau de conservation Notes
AEWA
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 2 1990 1995 5,000 10,000 No quality assessment [R578]
WPE 3 2001 2001 1,000 5,000 No quality assessment [R190]
WPE 4 2001 2001 1,000 5,000 No quality assessment [R190]
WPE 1 0 0 -1 -1 No quality assessment
WPE 5 2010 2010 1 1,000 Expert opinion [S8072] [R910]
CSR 4 2001 2001 1,000 5,000 Expert opinion
CSR 5 2010 2010 1 1,000 Expert opinion [S5404] [R910]
CSR 6 2010 2014 100 1,000 Expert opinion [S8621] [R1371]
CSR 7 2010 2014 100 1,000 Best guess [S9118] [R1371]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1982 1992 DEC No quality assessment [R578]
WPE 3 1982 1992 DEC No quality assessment [R578]
WPE 4 1982 1992 DEC No quality assessment [R578]
WPE 1 0 0 Unknown No quality assessment
WPE 5 1982 1992 DEC Poor [R578]
CSR 4 1982 1992 DEC Poor [R578]
CSR 5 1982 1992 DEC Poor [R578]
CSR 6 2002 2013 Unknown Poor [T6690]
CSR 7 2002 2013 Unknown Poor [T7171] [R1371] [R578]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 75
WPE 3 2002 30
WPE 4 2006 30
WPE 1 -1 -1 Not Set
WPE 5 2012 1
CSR 4 -1 -1 Not Set
CSR 5 -1 -1 Not Set
CSR 7 2018 3

References

  • R578 - Scott, D.A. and Rose, P.M. 1996. Atlas of Anatidae populations in Africa and western Eurasia. Wetlands International Publication No. 41. Wetlands International, Wageningen, NL. 336 pp.
  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R910 - Trolliet, B. in litt 2011
  • R1371 - Dodman, T. 2014. Status, Estimates and Trends of Waterbird Populations in Africa: AEWA-listed African populations. Wetlands International. (CSR6 African populations) URL: https://www.wetlands.org/publications/1304/

Notes

  • S8072 - Trolliet, B. In litt. 2011: This species was seen only once (2 birds) in the Lake Chad Basin. It is possible to miss small numbers one time or another but it is unlikely that several thousand birds would have remained systematically unnoticed. Suggested estimate < 1000.
  • S5404 - 920. This species was seen only once (2 birds) in the Lake Chad Basin. It is possible to miss small numbers one time or another but it is unlikely that several thousand birds would have remained systematically unnoticed. Suggested estimate < 1000.
  • S8621 - Maximum of 1,000 applied for WPE5; minimum here increased from 1 to 100 (e.g. 45 in northern Nigeria in 2012).
  • T6690 - Past declining trend is quite well established, but current trend is indeed unknown. Nevertheless, it is classified being in significant long-term decline on the assumption that past trend has not changed.
  • S9118 - Maximum of 1,000 applied for WPE5; minimum here increased from 1 to 100 (e.g. 45 in northern Nigeria in 2012).
  • T7171 - Past declining trend is quite well established (Dodman 2014), but current trend is indeed unknown. Nevertheless, it is classified being in significant long-term decline on the assumption that past trend has not changed.



Copyright Wetlands International 2012

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