Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Thalassornis leuconotus Nom courant White-backed Duck
Nom population leuconotus, Eastern & Southern Africa
Aire de reproduction Eastern, Southern Africa 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 1 0 0 10,000 25,000 [R115]
WPE 2 0 0 10,000 25,000 [R115]
WPE 3 0 0 10,000 25,000 [R115]
WPE 4 0 0 10,000 25,000 [R115]
WPE 5 1990 1990 10,000 25,000 Expert opinion [R115]
CSR 4 1990 1990 10,000 25,000 Expert opinion [R115]
CSR 5 1990 1990 10,000 25,000 Expert opinion [R115]
CSR 6 1990 1990 10,000 25,000 Expert opinion [S8680] [R115]
CSR 7 1990 1990 10,000 25,000 Best guess [S9132] [R115]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1980 1990 STA [R115]
WPE 2 1980 1990 STA [R115]
WPE 3 1980 1990 STA [R115]
WPE 4 1980 1990 STA [R115]
WPE 5 1980 1990 STA Poor [R115]
CSR 4 1980 1990 STA Poor [R115]
CSR 5 1980 1990 STA Poor [R115]
CSR 6 2002 2012 Unknown No idea
CSR 7 2006 2014 DEC Reasonable [R1548]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 180
WPE 2 1997 180
WPE 3 2002 180
WPE 4 2006 180
WPE 5 2012 250
CSR 4 0 -1
CSR 5 0 -1
CSR 7 2018 250

References

  • R115 - Callaghan, D.A. and Green, A.J. 1993. Wildfowl at risk, 1993. Wildfowl 44: 149-169.
  • R1548 - Wetlands International (2017) Flyway trend analyses based on data from the African-Eurasian Waterbird Census from the period of 1967-2015. Ede, The Netherlands: Wetlands International. URL: http://iwc.wetlands.org/index.php/aewatrends

Notes

  • S8680 - IWC counts may reach ca. 1,000 for whole range. No significant new information for this rather thinly-spread species.
  • S9132 - IWC counts may reach ca. 1,000 for whole range. No significant new information for this rather thinly-spread species.



Copyright Wetlands International 2012

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