Population information

Order name Charadriiformes
Family name Laridae
Scientific name Hydroprogne caspia Common name Caspian Tern
Population name West Africa (bre)
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 3 2001 2001 45,000 60,000 [R190]
WPE 4 2001 2001 45,000 60,000 [R190]
WPE 1 0 0 12,000 12,000 [R670]
WPE 2 0 0 12,000 12,000 [R670]
WPE 5 2001 2001 45,000 60,000 Expert opinion [R190] [R678]
CSR 4 2001 2001 45,000 60,000 Expert opinion [R190] [R678]
CSR 5 2001 2001 45,000 60,000 Expert opinion [R190] [R678]
CSR 6 2003 2014 45,000 60,000 Expert opinion [S8596] [R1359] [R1371] [R1514] [R1519]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1991 2001 STA [R190]
WPE 4 1991 2001 STA [R190]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1991 2001 STA Poor [R190]
CSR 4 1991 2001 STA Poor [R190]
CSR 5 1991 2001 STA Poor [R190]
CSR 6 2003 2014 INC/STA Poor [T6589] [R1359] [R1371] [R1519]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 530
WPE 4 2006 530
WPE 1 1994 120
WPE 2 1997 120
WPE 5 2012 520
CSR 4 0 -1
CSR 5 0 -1
CSR 6 0 -1

References

  • R190 - Dodman, T. 2002. Waterbird Population Estimates in Africa. Unpublished report to Wetlands International.
  • R670 - Urban, E.K., Fry, C.H. and Keith, S. 1986. The Birds of Africa. Volume II. Academic Press, London and Orlando.
  • R678 - Veen, J., Peeters, J. Leopold, M., van Damme, C. and Veen, P. in press 2002. Effected van visserij op natuurwarden langs de kust van West Afrika: visetende vogels als graadmeters voor de kwaliteit van het mariene milieu. Alterra rapport, Wageningen, The Netherlands
  • R1359 - van Roomen, M., van Winden, E. & Langendoen, T. 2014. The assessment of trends and population sizes of a selection of waterbird species and populations from the coastal East Atlantic Flyway for Conservation Status Report 6 of The African Eurasian Waterbird Agreement. Wadden Sea Flyway Initiative, Wetlands International & Birdlife International.
  • 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/
  • R1514 - Veen, J., Dallmeijer, H., Diagana, C. 2007. Monitoring colonial nesting birds along the West African Seaboard. Wetlands International Africa, Dakar, Senegal. Pp 37.
  • R1519 - Veen, J. in litt., 2014
  • 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
  • R1546 - van Roomen M., Nagy S., Foppen R., Dodman T., Citegetse G. & Ndiaye A. (in prep). Status of coastal waterbird populations in the East Atlantic Flyway. Programme Rich Wadden Sea, Leeuwarden, The Netherlands, Sovon, Nijmegen, The Netherlands, Wetlands International, Wageningen, The Netherlands, BirdLife International, Cambridge, United Kingdom &, Wadden Sea Secretariat, Wilhelmshaven, Germany.

Notes

  • S8596 - 46,448 individuals counted in January, rounded to 50,000 (van Roomen et al. 2014).
  • T6589 - Increasing trend on the basis of trend analyses (van Roomen et al., 2014). Stable to slightly increasing trend on the basis of population size comparison considering redistribution of birds (Dodman, 2014).
  • T7060 - Long-term trend is assessed as stable with TRIM and supports Dodman's (2014) assessment. However, van Roomen et al. (2015) assessed the trend as increasing noting the influence of two high counts towards the end of the assessment period.



Copyright Wetlands International 2012

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