The Conservation Status of Gibbons in Vietnam - Gibbon Research ...

The Conservation Status of Gibbons in VietnamConventionsThis document uses the following conventions.Chapters on the status of each gibbon speciesThe chapters describing the status of each species follow the same structure, beginning with asummary of the status and distribution of the species globally and in Vietnam, followed by acomparison with the status reported in Vietnam Primate Conservation Status Review 2000 Part 1:Gibbons (Geissmann et al. 2000). Key sites for the species conservation are identified and threatsand ongoing conservation actions are summarised. A brief assessment of the priorityconservation actions for each taxon is then provided. This is followed by a separate account foreach site where records have been collected for the species. For completeness, where there hasbeen sufficient information from a site since 2000 to indicate that gibbons are probably nowabsent from there, a short site account is also given. Finally, the chapters close with a table listingother sites where gibbons were considered provisionally or confirmed present between 1995 and2000, i.e. in Geissmann et al. (2000), but for which this report has compiled no new information.Naming conventionsThis gibbon status review follows the taxonomy presented in the IUCN Red List of ThreatenedSpecies, which we have updated based on new information on the taxonomy of the Nomascusgenus as described in Chapter 9.There is much inconsistency over the general use of common species names in English for crestedgibbons. This can be confusing to anyone except specialists in the field. Throughout thisdocument, common names have been kept simple and consistent for clarity. Other commonlyusednames are presented at the beginning of each species chapter. The term “crested” has beendropped when referring to a species for brevity and because all gibbons in Vietnam are crestedgibbons. This should not cause any confusion with species of other gibbon genera.Vietnamese species names follow the 2007 Vietnam Red Data Book (Ministry of Science andTechnology & Vietnam Academy of Science and Technology 2007) and the Field Guide to theLarge Mammals of Vietnam (Parr & Hoang Xuan Thuy 2008). Additional names are given wherethey are commonly used and known to the authors. The lists of Vietnamese names for the gibbonspecies are not intended to be exhaustive.Conservation statusThe internationally and nationally recognised conservation status and degree of legal protectionof each species is presented based upon the following:• IUCN Red List of Threatened Species• 2007 Vietnam Red Data Book• Decree 32/2006/NP-CP on Management of Endangered, Precious and Rare Forest Plants andAnimals• Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)Site accountsAccounts are given for all sites for which there is new information on gibbons since thepublication of Geissmann et al. (2000). Some pre-2000 records and references are included forclarity and in a few cases where records were not picked up by Geissmann et al. (2000).vii