Population information

Order name Pelicaniformes
Family name Phalacrocoracidae
Scientific name Microcarbo coronatus Common name Crowned Cormorant
Population name Coastal South-west Africa
Breeding range Coastal SW Africa Walvis Bay - Cape Agulhas 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 3 0 0 8,700 8,700 No quality assessment [R196]
WPE 4 0 0 8,700 8,700 No quality assessment [R196]
WPE 1 0 0 2,700 2,700 No quality assessment [R700]
WPE 2 0 0 5,330 5,330 No quality assessment [R165]
WPE 5 1990 2000 8,700 8,700 Expert opinion [R196]
AEWA CSR 4 1990 2000 8,700 8,700 Expert opinion [R196]
AEWA CSR 5 1990 2000 8,700 8,700 Expert opinion [R196]
AEWA CSR 6 2010 2013 9,000 9,000 Census based [S8603] [R317] [R1391]
AEWA CSR 7 2010 2013 9,000 9,000 Census based [S8603] [R317] [R1391]
AEWA CSR 8 2010 2013 9,000 9,000 Census based [S8603] [R317] [R1391]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 0 0 Unknown No quality assessment
WPE 4 0 0 Unknown No quality assessment
WPE 1 0 0 Unknown No quality assessment
WPE 2 0 0 Unknown No quality assessment
WPE 5 1990 2000 STA Poor [R196]
AEWA CSR 4 1990 2000 STA Poor [R196]
AEWA CSR 5 1990 2000 STA Poor [R196]
AEWA CSR 6 2000 2013 STA Good [R1374] [R1391]
AEWA CSR 7 2000 2013 STA Good [R1374] [R1391]
AEWA CSR 8 1977 2015 STA Reasonable [T7473] [R1724] [R1725]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 85
WPE 4 2002 85
WPE 1 1994 27
WPE 2 1997 53
WPE 5 2002 85
AEWA CSR 4 -1 -1 Not Set
AEWA CSR 5 -1 -1 Not Set
AEWA CSR 7 2002 85
AEWA CSR 8 2002 85

References

  • R196 - du Toit, M., Boere, G.C., Cooper, J., Kemper, J., Lenten, B., Simmons, R.S., Whittington, P.A. and Byers, O. (eds). 2002. Conservation assessment and management plan for southern African coastal seabirds. Workshop Report, Cape Town, South Africa, 4-8 Feb
  • R700 - Williams, A.J. and Crawford, R.J.M. 1993.Distribution, Status and Conservation of Pelecaniform birds in Sub-Saharan Africa and the Red Sea (Abstracts). In: Wilson, R.T. (ed.) Birds and the African Environment: Proceedings of the eigth Pan-African Ornithological Congress. Annales Musee Royale de l'Afrique Centrale (Zoologie) Vol 268.
  • R165 - Croxall, J.P., Evans, P.G.H. and Schreiber, R.W. (eds.). 1984. Status and Conservation of the World's Seabirds. ICBP Technical Publication No. 2. Cambridge, UK.
  • R317 - Hockey P.A.R., Dean, W.R.J. and Ryan, P.G. (eds). 2005. Roberts - Birds of Southern Africa, 7th ed. The Trustees of the John Voelcker Bird Book Fund, Cape Town.
  • R1391 - Wanless, R. et al. (in prep.) Action Plan for the Benguela Current seabirds. AEWA Secretariat, Bonn.
  • R1374 - Crawford (2007)
  • R1724 - Crawford, R. J., Makhado, A. B., Whittington, P. A., Randall, R. M., Oosthuizen, W. H., & Waller, L. J. (2015). A changing distribution of seabirds in South Africa—the possible impact of climate and its consequences. Frontiers in Ecology and Evolution, 3, 10.
  • R1725 - Kemper, J. (2007). Population estimates and trends of seabird species breeding in Namibia. Final report of the BCLME (Benguela Current Large Marine Ecosystem) project on top predators as biological indicators of ecosystem change in the BCLME. Cape Town, South Africa: Avian Demography Unit, University of Cape Town, 207-210.

Notes

  • S8603 - Census of breeding colonies. Crawford (2007) indicates that DuToit et al. (2002) included 238 pairs from one island in error in their estimate of 2665 pairs (8700 birds). Wanless et al. (in prep.) accounted for 3,000 pairs after rounding (1,900 pairs in South Africa in 2013 and 1,200 pairs in Namibia in 2010).
  • T7473 - Based on IWC data, Nagy & Langendoen (2020) reported uncertain trend with a decreasing tendency for 2000-2018 and 2009-2018. However, the number of breeding birds were stable in ZA between 1977-1981 and 2008-2012 (Crawford et al., 2015) and it was also stable in NA between 1996/1997 and 2005/2006.



Copyright Wetlands International 2012

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