Population information

Order name Anseriformes
Family name Anatidae
Scientific name Plectropterus gambensis Common name Spur-winged Goose
Population name gambensis, West Africa
Breeding range W Africa Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes

Conservation Framework

Conservation framework Notes
AEWA
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 2 0 0 50,000 50,000 [R517]
WPE 1 0 0 100,000 1,000,000 [R517]
WPE 3 2001 2001 100,000 100,000 [R190]
WPE 4 0 0 50,000 100,000 [S4926] [R192]
WPE 5 2006 2006 50,000 100,000 Expert opinion [R192]
CSR 5 2006 2006 50,000 100,000 Expert opinion [R192]
CSR 4 2006 2006 50,000 100,000 Expert opinion [R192]
CSR 6 2006 2006 50,000 100,000 Expert opinion [R192]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1980 1990 DEC [R517]
WPE 1 1980 1990 STA [R517]
WPE 3 1991 2001 STA [R190]
WPE 4 1991 2001 STA [R190]
WPE 5 1991 2001 INC Poor [R910]
CSR 5 1991 2001 INC Poor [R910]
CSR 4 1991 2001 STA Poor
CSR 6 1992 2007 DEC Poor [T6664] [R1436] [R1381] [R910]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 500
WPE 1 0 -1
WPE 3 2002 1000
WPE 4 2006 750
WPE 5 2012 710
CSR 5 0 -1
CSR 4 0 -1

References

  • R517 - Perennou, C. 1991. Les recensements internationaux d'oiseaux d'eau en Afrique Tropicale. IWRB Spec. Publ. No. 15. Slimbridge, UK. 140 pp.
  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R192 - Dodman, T., 2006. Status, estimates and trends of waterbird populations in Africa. Wetlands International, Dakar.
  • R910 - Trolliet, B. in litt 2011
  • R1436 - Zwarts et al 2009. Living on edge.
  • R1381 - Nagy, S., Flink, S., Langendoen, T. (2014) Waterbird trends 1988-2012: Results of trend analyses of data from the International Waterbird Census in the African-Eurasian Flyway. Wetlands International, Ede.
  • 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. Temporary URL: https://www.dropbox.com/sh/r76f4eyuhzu65co/AADzzQkhySsUDsmwFJUcHs91a?dl=0

Notes

  • S4926 - 656: Counts of <20,000 in aerial surveys of Sahelian wetlands from Atlantic to Chad Basin suggest a population lower than the 100,000 presented in 699. There are, however, high concentrations in the Sahel at other times, e.g. 13,500 in Mali's Inner Niger Delta in June 2000, whilst the species is also widespread south of the main Sahelian belt (198).
  • T6664 - Decline of ca. 18% in core area of Inner Niger Delta, this being a key site for this species. Trends elsewhere in region not available.
  • T6909 - Both the row count totals and the trend analysis (that takes into account of missing counts) suggest an increasing population with large fluctuations, which supports Trolliet (2011) opinion.



Copyright Wetlands International 2012

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