The status of Laotian black crested gibbon Nomascus concolor lu in Nam Kan National Protected Area, Lao PDR

Author(s):

Youanechuexian, K.; Suwanwaree, P.; Phiapalath, P.

Format:

Journal article

Citation:

Advances In Environmental Biology, Volume 8, Issue 14 (2014). pp. 13-Jul.

Language:

English

Abstract:

Background: The Laotian black crested gibbon (Nomascus concolor lu) is a globally threatened species (IUCN - Critically endangered). There are only a few populations and restricted to the Lao PDR. Objective: The research aims were to determine the distribution and population density of this gibbon species by auditory listening post sampling in Nam Kan National Protected Area (NPA), northern Lao PDR from October 2013 to January 2014. Results: Village interviews were conducted prior to the field survey and realized that the gibbon was only found in dry evergreen forest. Twentythree sites, with three listening posts each, were surveyed across 261 km2 of suitable habitats. Each post was approximately 500 m a part and it was visited on 3 consecutive mornings from 5:30 am to 10:00 am to locate gibbon groups and then followed to count their group members. Ten gibbon groups were heard from only 3 locations and a total of 39 individuals were seen. The gibbon density is estimated as 0.04groups/km2 and 3.9 individuals per group average. Conclusion: Compared to previous studies, gibbon population is in decline due to hunting and habitat loss. They are no longer in some previous record locations. Gibbon Experience’s treehouse location is one of a few places in Nam Kan NPA that still supports good gibbon populations since they are not hunted. It is due to Hmong’s traditional taboo and partly the benefit from ecotourism. © 2014 AENSI Publisher All rights reserved.

ISSN:

19950756 (ISSN)

Identifier:

HmongStudies3897