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Rapid decline of the largest remaining population of Bengal Florican Houbaropsis bengalensis and recommendations for its conservation

Rapid decline of the largest remaining population of Bengal Florican Houbaropsis bengalensis and... Summary A census of the Critically Endangered Bengal Florican Houbaropsis bengalensis was conducted between March and May 2012 on and surrounding the Tonle Sap floodplain in Cambodia, which supports the last extant population of the Indochinese subspecies blandini. We found a decline in the number of displaying males of 44–64% since a comparable estimate from the same sites in 2005 to 2007. The estimated population, including five individuals at one previously unsurveyed site, is now 216 (95% CI 156–275) displaying males, plus potential non-displaying males and an unknown number of females. If numbers continue to be lost at a similar rate, it is possible that blandini would become extinct within 10 years. Although the population faces multiple threats, this critical situation has primarily been caused by the recent, rapid conversion of the florican’s grassland habitat to intensive, industrial-scale, irrigated rice cultivation. To protect the Bengal Florican from extinction in South East Asia, existing Bengal Florican Conservation Areas (BFCAs) need expansion and improvements, including strengthened legal status by prime ministerial sub-decree and better demarcation, patrolling and management. As priorities, both irrigated rice and scrub encroachment within the BFCAs needs to be reversed, local communities better supported, and land outside the BFCAs monitored and strategically managed for florican conservation. Where possible, further BFCAs need to be established. Land purchase may also be an effective conservation measure; leasing land earmarked for cultivation would be cheaper, but less secure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bird Conservation International Cambridge University Press

Rapid decline of the largest remaining population of Bengal Florican Houbaropsis bengalensis and recommendations for its conservation

Bird Conservation International , Volume 24 (4): 9 – Nov 26, 2013
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Publisher
Cambridge University Press
Copyright
Copyright © BirdLife International 2013 
ISSN
1474-0001
eISSN
0959-2709
DOI
10.1017/S0959270913000567
Publisher site
See Article on Publisher Site

Abstract

Summary A census of the Critically Endangered Bengal Florican Houbaropsis bengalensis was conducted between March and May 2012 on and surrounding the Tonle Sap floodplain in Cambodia, which supports the last extant population of the Indochinese subspecies blandini. We found a decline in the number of displaying males of 44–64% since a comparable estimate from the same sites in 2005 to 2007. The estimated population, including five individuals at one previously unsurveyed site, is now 216 (95% CI 156–275) displaying males, plus potential non-displaying males and an unknown number of females. If numbers continue to be lost at a similar rate, it is possible that blandini would become extinct within 10 years. Although the population faces multiple threats, this critical situation has primarily been caused by the recent, rapid conversion of the florican’s grassland habitat to intensive, industrial-scale, irrigated rice cultivation. To protect the Bengal Florican from extinction in South East Asia, existing Bengal Florican Conservation Areas (BFCAs) need expansion and improvements, including strengthened legal status by prime ministerial sub-decree and better demarcation, patrolling and management. As priorities, both irrigated rice and scrub encroachment within the BFCAs needs to be reversed, local communities better supported, and land outside the BFCAs monitored and strategically managed for florican conservation. Where possible, further BFCAs need to be established. Land purchase may also be an effective conservation measure; leasing land earmarked for cultivation would be cheaper, but less secure.

Journal

Bird Conservation International – Cambridge University Press

Published: Nov 26, 2013

References

  • Quantifying changes in flooding and habitats in the Tonle Sap Lake (Cambodia) caused by water infrastructure development and climate change in the Mekong Basin
  • The avifauna of the Vietnamese Mekong Delta
  • Payments for biodiversity conservation in the context of weak institutions: comparison of three programs from Cambodia
  • Adult sex ratios in wild bird populations
  • Habitat preferences of a globally threatened bustard provide support for community-based conservation in Cambodia
  • Distribution, status and conservation of Bengal Florican Houbaropsis bengalensis in Cambodia
  • Sex-specific habitat use by a lekking bustard: conservation implications for the Critically Endangered Bengal Florican (Houbaropsis bengalensis) in an intensifying agroecosystem
  • Dams on the Mekong River: Lost fish protein and the implications for land and water resources
  • High-speed loss of Cambodia’s grasslands: biodiversity and livelihoods at risk
  • Agriculture – a key element for conservation in the developing world