Population information

Nom ordre Charadriiformes
Nom famille Laridae
Nom scientifique Thalasseus bengalensis Nom courant Lesser Crested Tern
Nom population bengalensis, Gulf/Southern Asia
Aire de reproduction Persian Gulf, Pakistan coast, Maldive & ?Laccadive Is Aire de non-reproduction Indian Ocean S to Sri Lanka and possibly South Africa
Catégorie de la Liste Rouge Least Concern
Regions Ramsar Africa Asia
Notes

Réseau de conservation

Réseau de conservation Notes
AEWA
CAF Action Plan
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 1987 1991 60,000 60,000 No quality assessment [R519]
WPE 2 1987 1991 60,000 60,000 No quality assessment [R519]
WPE 3 0 0 150,000 180,000 No quality assessment [R579]
WPE 4 0 0 150,000 180,000 No quality assessment [R579]
WPE 5 1995 1995 150,000 180,000 Expert opinion [R579]
AEWA CSR 4 1995 1995 150,000 180,000 Expert opinion [R579]
AEWA CSR 5 1995 1995 150,000 180,000 Expert opinion [R579]
AEWA CSR 6 0 0 286,000 286,000 Expert opinion [S8432] [R1330] [R1431]
AEWA CSR 7 0 0 286,000 286,000 Expert opinion [S8432] [R1330] [R1431]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown No quality assessment
WPE 2 0 0 Unknown No quality assessment
WPE 3 0 0 Unknown No quality assessment
WPE 4 0 0 Unknown No quality assessment
WPE 5 0 0 Unknown No quality assessment
AEWA CSR 4 0 0 Unknown No quality assessment
AEWA CSR 5 0 0 Unknown No quality assessment
AEWA CSR 6 2003 2012 INC Poor [T6430] [R1345] [R1431]
AEWA CSR 7 2003 2012 INC Poor [T6430] [R1345] [R1431]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 600
WPE 2 1997 600
WPE 3 2002 1700
WPE 4 2006 1700
WPE 5 2012 1600
AEWA CSR 4 -1 -1 Not Set
AEWA CSR 5 -1 -1 Not Set
AEWA CSR 6 -1 -1 Not Set
AEWA CSR 7 2018 2900

References

  • R519 - Perennou, C.P., Mundkur, T. and Scott, D.A. 1994. The Asian Waterfowl Census 1987-1991: distribution and status of Asian waterfowl. IWRB Spec. Publ. No. 24; AWB Spec. Publ. No. 86. Slimbridge, UK and Kuala Lumpur, Malaysia.
  • R579 - Scott, D.A. in press, 2002. Report on the Conservation Status of Migratory Waterbirds in the Agreement Area. Update Report to African Eurasian Migratory Waterbird Agreement Secretariat
  • R1330 - Jennings, M.C. 2010. Atlas of Breeding Birds of Arabia. Fauna of Arabia Vol. 25. Senckenberg Gesellschaft für Naturforschung and King Abdulaziz City for Science and Technology, Frankfurt, Germany and Riyadh, Saudi Arabia
  • R1431 - Tayafeh 2013
  • R1345 - Behrouzi-Rad, B. (2013). Breeding Species of waterbirds on 10 islands of Persian Gulf In 2009. Octa Journal of Environmental Research, 1(1), 52-64.
  • R1759 - Tayefeh, F. H., Zakaria, M., Amini, H., Ghasemi, M., Amini, A., & Jafari, H. (2013). Monitoring of populations of breeding terns and crab plovers on the Iranian islands of the Persian Gulf. Journal homepage: www. wesca. net, 8(1).
  • R1619 - Nagy, S. & Langendoen, T. (2020) Flyway trend analyses based on data from the African-Eurasian Waterbird Census from the period of 1967-2018. Online publication. Wetlands International, Wageningen, The Netherlands. URL: http://iwc.test.wetlands.org/index.php/aewatrends8

Notes

  • S8432 - 64,750-74,750 pairs in Arabia (Jennings, 2010). Further 27,554-30,799 in IR (Tayefeh, 2013).
  • T6430 - Based on data from IR, numbers show increase over the last decade (Behrouzi-Rad 2013, Tayafeh 2013).
  • T7660 - Based on data from IR, numbers show increase over the 2000s (Behrouzi-Rad 2013, Tayafeh et al., 2013). Based on IWC data, Nagy & Langendoen (2020) reported uncertain trends for 2004-2017 (1.0585) and for 2008-2017 (0.9889). Based on the growth rate of the last 10 years, the population is projected to decrease by 26% in 3 generations compared to the population levels in 2008. However, the short-term growth rate is actually rather close to a stable trend.



Copyright Wetlands International 2012

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