Conservation status and needs of
François’s Langur in Vietnam
Paul Insua-Cao, Thach Mai Hoang, Michael Dine
September 2012
Citation:
Paul Insua-Cao, Thach Mai Hoang, and Michael Dine (2012) Conservation status and needs of
François’s Langur in Vietnam. People Resources and Conservation Foundation, Hanoi,
Vietnam.
Authors:
Paul Insua-Cao, People Resources and Conservation Foundation, and Fauna & Flora
International
Thach Mai Hoang, Vietnam National University, Hanoi
Michael Dine, People Resources and Conservation Foundation, Chief Technical Officer
(Vietnam and Trans-boundary China)
Date:
September 2012
Cover photo:
Adult female Francois’ Langur / Xu-Jianming
This report is an output of the project “Promoting Community Based Collaborative Management to Strengthen
Long Term Conservation of Globally Threatened Primates and Trees in Priority Sites of Northern Vietnam”.
This report was funded by the Critical Ecosystem Partnership Fund and commissioned by the People Resources
and Conservation Foundation. The Critical Ecosystem Partnership Fund is a joint initiative of l’Agence Française
de Développement, Conservation International, the Global Environment Facility, the Government of Japan, the
MacArthur Foundation and the World Bank. A fundamental goal is to ensure civil society is engaged in
biodiversity conservation.
All views expressed within are the author’s alone unless attributed otherwise and do not necessarily reflect
the opinion of the People Resources and Conservation Foundation or the Critical Ecosystem Partnership Fund
or any of its donor partners. While the authors and editors strive for rigor and accuracy in presenting this
report, the aforementioned organizations make no representations as to completeness, suitability, or validity
of any information contained, and will not be liable for any errors or omissions.
Reproduction of any part of this report for educational, conservation and other non-profit purposes is
authorized without prior permission from the copyright holder, provided that the source is fully acknowledged.
Reproduction for commercial purposes is prohibited without prior written permission from the copyright
holder.
COPYRIGHT
© 2012 People Resources and Conservation Foundation
www.prcfoundation.org
C o n s e r v a t i o n s t a t u s a n d n e e d s o f t h e F r a n c o i s L a n g u r i n V i e t n a m
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Table of contents
Summary ...................................................................................................................................... 4
Background .................................................................................................................................................. 4
Status of the François’ Langur population in Vietnam ................................................................................. 4
Threats ....................................................................................................................................................... 5
Recommended conservation actions ........................................................................................................... 5
1.
Introduction ......................................................................................................................... 7
1.1.
Methods in developing this status review and conservation strategy .......................................... 8
1.2.
Taxonomy and description ............................................................................................................ 8
1.3.
Ecological characteristics ............................................................................................................... 9
1.4.
Status and distribution in China .................................................................................................. 11
2.
Records and status of François’ Langurs in Vietnam ........................................................... 11
2.1.
The population of François’ Langurs in Vietnam ......................................................................... 11
2.2.
Important sites for François’ Langurs .......................................................................................... 12
2.3.
Population fragmentation ........................................................................................................... 14
2.4.
Comparison with other endangered primates in northern Vietnam........................................... 15
3.
Conservation threats .......................................................................................................... 17
3.1.
Hunting ........................................................................................................................................ 17
3.2.
Habitat degradation and availability of habitat ........................................................................... 18
3.3.
Small and fragmented populated size ......................................................................................... 18
3.4.
Poor protected area management .............................................................................................. 19
4.
Recommended Conservation actions ................................................................................. 19
4.1.
Focus on priority sites .................................................................................................................. 19
4.2.
Awareness raising ........................................................................................................................ 20
4.3.
Patrolling and monitoring ............................................................................................................ 21
4.4.
More field surveys ....................................................................................................................... 21
4.5.
Training and capacity building ..................................................................................................... 22
4.6.
Research ...................................................................................................................................... 22
4.7.
Eco-tourism.................................................................................................................................. 22
4.8.
Captive breeding / translocation ................................................................................................. 23
4.9.
A national François’ Langur conservation action plan ................................................................. 23
5.
References ......................................................................................................................... 24
Annex. Individual site records ..................................................................................................... 29
Priority sites for the François’ Langur in Vietnam .................................................................................... 29
Sinh Long Forest Area and Lam Binh Watershed Protection Forest .......................................................... 29
Than Xa-Phuong Hoang Nature Reserve .................................................................................................... 33
Potential important areas for François’ Langur ........................................................................................ 34
Bat Dai Son Nature Reserve ....................................................................................................................... 34
Du Gia Nature Reserve ............................................................................................................................... 34
Bac Me Nature Reserve .............................................................................................................................. 35
Other records in Ha Giang .......................................................................................................................... 35
Na Hang Nature Reserve ............................................................................................................................ 36
Trung Khanh district ................................................................................................................................... 36
Ba Be National Park .................................................................................................................................... 37
Kim Hy Nature Reserve .............................................................................................................................. 38
Sites where the François’ Langur is likely already extirpated .................................................................. 39
Cham Chu Nature Reserve ......................................................................................................................... 39
South Xuan Lac Species and Habitat Conservation Area ............................................................................ 39
Huu Lien Nature Reserve............................................................................................................................ 40