Population information

Order name Podicipediformes
Family name Podicipedidae
Scientific name Podiceps cristatus Common name Great Crested Grebe
Population name infuscatus, Southern Africa
Breeding range Southern Africa Non-breeding range
Red List Category Least Concern
Ramsar regions Africa
Notes These populations were treated as a single larger population WPE1. (WPE2)

Conservation Framework

Conservation framework Notes
AEWA
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 2002 2002 1 10,000 [R604]
WPE 4 2006 2006 1 10,000 [R668]
WPE 2 0 0 1 10,000 [R667]
WPE 5 2005 2005 1 10,000 Best guess [R668]
CSR 4 2005 2005 1 10,000 Best guess [R668]
CSR 5 2005 2005 1 10,000 Best guess [R668]
CSR 6 1991 2012 1,500 5,000 Expert opinion [S8598] [R1365] [R1371]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1985 1995 INC [R188]
WPE 4 1985 1995 INC [R188]
WPE 2 0 0 Unknown
WPE 5 1999 2007 Unknown No idea [T3934]
CSR 4 1989 1997 INC Poor
CSR 5 1999 2007 Unknown Poor [T1918] [R888]
CSR 6 1991 2012 INC Reasonable [T6592] [R1371] [R1372] [R1381]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 100
WPE 4 2006 100
WPE 2 0 -1
WPE 5 2012 100
CSR 4 0 -1
CSR 5 0 -1

References

  • R604 - Specialist]] Unpublished information supplied by Wetlands International Specialist Groups, 2002.
  • R188 - Dodman, T. and Rose, P. 1997. Application of the African Waterfowl Census in estimating the distribution and abundance of African waterfowl. In: Dodman, T. (ed.) 1996. A Preliminary Waterbird Monitoring strategy for Africa. Wetlands International, Wageningen, The Netherlands
  • R668 - Unpublished information supplied by Wetlands International Specialist Groups, 2006.
  • R667 - Unpublished information supplied by Wetlands International Specialist Groups, 1997.
  • R888 - Wetlands International, 2012. Results of trend analysis undertaken for CSR5 2012, presented in Annex 4. http://www.unep-aewa.org/meetings/en/mop/mop5_docs/pdf/mop5_14_csr5.pdf
  • R1365 - Wetlands International, International Waterbird Census, unpublished data, 2014.
  • 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/
  • R1372 - Tyler, S. 2011.
  • 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

  • T3934 - Wetlands International 2012. Trend 1999-2007: +0.4% p.a. ? Uncertain.
  • T1918 - 898. Trend 1999-2007: +0.4% p.a. – Uncertain.
  • S8598 - Several coordinated counts of >1,000, but counts have never reached 2,000
  • T6592 - Increasing in Botswana, whilst IWC counts in 2000s are higher than in previous decades.
  • T6787 - Continued increase since the mid-1990s (Wetlands International 2017)



Copyright Wetlands International 2012

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