Initial Environmental Examination – Appendix U Project Number: 54211-001 March 2021 Document Stage: Draft Viet Nam: Lotus Wind Power Project Prepared by ERM Vietnam for Lien Lap Wind Power Joint Stock Company, Phong Huy Wind Power Joint Stock Company, and Phong Nguyen Wind Power Joint Stock Company as a requirement of the Asian Development Bank. The initial environmental examination is a document of the borrower. The views expressed herein do not necessarily represent those of ADB's Board of Directors, Management, or staff, and may be preliminary in nature. Your attention is directed to the “Terms of Use” section of this website. In preparing any country program or strategy, financing any project, or by making any designation of or reference to a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area. Primates (Red-shanked Douc Langur and Pygmy Slow Loris) Report PHONG NGUYEN – PHONG HUY 8 October 2020 Prepared by WILDTOUR for ERM Vietnam Document details Document title Primates (Red-shanked Douc Langur and Pygmy Slow Loris) Report Document subtitle PHONG NGUYEN – PHONG HUY Wind Power Project, Huong Hoa District, Quang Tri province Date 8 October 2020 Version 1.0 Author WILDTOUR Client Name ERM Vietnam Document history Version Revision Author Reviewed by ERM approval to issue Comments Name Date Draft 1.0 Name Name Name 00.00.0000 Text Version: 1.0 Client: ERM Vietnam 8 October 2020 PRIMATES (RED-SHANKED DOUC LANGUR AND PYGMY SLOW CONTENTS LORIS) REPORT Wind Power Project, Huong Hoa District, Quang Tri province CONTENTS 1. INTRODUCTION .......................................................................................................................... 3 1.1 Objective ........................................................................................................................................ 3 1.2 Species profile ............................................................................................................................... 3 1.2.1 Red-shanked Douc Langur ........................................................................................... 3 1.2.2 Pygmy Slow Loris ......................................................................................................... 6 2. METHODOLOGIES ...................................................................................................................... 9 2.1 Study area and data collection ....................................................................................................... 9 2.2 Data analysis ............................................................................................................................... 12 3. RESULTS AND DISCCUSSION ................................................................................................ 13 3.1 Red-shanked Douc Langur .......................................................................................................... 13 3.2 Pygmy Slow Loris ........................................................................................................................ 15 3.3 Additional records ........................................................................................................................ 15 3.4 Threats to species and conservation recommendation ................................................................ 17 4. CONCLUSIONS ......................................................................................................................... 21 REFERENCES ...................................................................................................................................... 22 DETAILED INFORMATION OF SPECIES OBSERVATION DURING THE SURVEY PERIOD LIST OF FOOD PLANT TREES BY RED-SHANKED DOUC List of Tables Table 2.1 The effort of the red-shanked douc survey .................................................................................. 10 Table 2.2 The effort of the loris survey ........................................................................................................ 11 List of Figures Figure 1.1 The Red-shanked Douc Langur (Photographing at Son Tra Nature Reserve, by Tran Van Bang) 4 Figure 1.2 The distribution range (the orangish region) of red-shanked douc in the world (Sources from IUCN Redlist of Threatened species .............................................................................................. 5 Figure 1.3 The photos of Pygmy Slow Loris (left) and Bengal slow loris (right). Photo by Tran Van Bang ..... 6 Figure 1.4 The distribution range (the orangish region) of Pygmy Slow Loris in the world (Sources from IUCN Redlist of Threatened species) ............................................................................................ 7 Figure 2.1 The transects that survey for red-shanked douc (yellow line) in the project area (green and red polygon) and in the Ecologically Appropriate Area for Analysis (black polygon) ............................ 9 Figure 2.2 The transects that survey for loris (yellow line) in the project area (green and red polygon) and in the Ecologically Appropriate Area for Analysis (black polygon). .................................................. 11 Figure 3.1 The photo of Red-shanked Douc Langur (Coordinate: 16.68668N, 106.586E, Photo by Tran Van Bang) ........................................................................................................................................... 14 Figure 3.2 The occurrence of threatened species that detected in the survey. ............................................. 14 Figure 3.3 The photo of Pig-tailed Macaque (Coordinate: 16.68544N, 106.561E) ....................................... 16 Figure 3.4 A photo of Stump-tailed Macaque by camera trap (Coordinate: 16.68062 N, 106.58658 E) ....... 17 Figure 3.5 Giant black squirrel on the death bamboo in the forest ................................................................ 18 Figure 3.6 The natural forest (dark green) with grassland and road in the project area. ............................... 19 Figure 3.7 The current forest type of the project area and the occurrence of Red-Shanked Douc (black dot). Map was made from data that provided by the management board of the protection forest (Datum is UTM WGS84, zone 48N) ............................................................................................. 20 Version: 1.0 Client: ERM Vietnam 8 October 2020 PRIMATES (RED-SHANKED DOUC LANGUR AND PYGMY SLOW CONTENTS LORIS) REPORT Wind Power Project, Huong Hoa District, Quang Tri province Acronyms and Abbreviations Name Description Version: 1.0 Client: ERM Vietnam 8 October 2020 PRIMATES (RED-SHANKED DOUC LANGUR AND PYGMY SLOW INTRODUCTION LORIS) REPORT Wind Power Project, Huong Hoa District, Quang Tri province 1. INTRODUCTION The wind power project will take place in Huong Tan and Tan Thanh communes, cover an area of 350 ha. The previous survey found the one group of Red-shanked Douc Langur (Pygathrix nigripes) [IUCN CR; VNRB EN] with 5 individuals and one animal of Pygmy Slow Loris (Nycticebus pygmaeus) [IUCN EN; VNRB VU]. Both two species are globally threatened species and are the trigger habitat species. While Pygmy Slow Loris is assigned into Endangered category in the IUCN Redlist of Threatened Species, Red-Shanked Douc Langur is in higher category, the Critically Endangered. Additional survey is proposed to understand the traits and distribution of two species that will be input for further assessment. Hence, the conservation plan can be promoted to the wind power project and help to propose appropriate mitigation measures. 1.1 Objective This survey was conducted with aim to: To estimate the population of the species within the Project area and distribution To identify the potential threats and propose the concept for species conservation 1.2 Species profile 1.2.1 Red-shanked Douc Langur Appearance The Red-Shanked Douc Langur has scientific name as Pygathrix nemaeus (Linnaeus, 1771), is the colobine monkey, belonging to the sub-family Colobinae of family Cercopithecidae (Groves 2001). Common morphology character of colobine monkey is the long tail, longer than the head and body length, length of forelimb and hindlimb are similar (Oates & A.G 1994; Kirkpatrick 2007). Colobine monkey also is known as leaf monkey because its main food is leaves and mostly account more than 50% in species diet (Groves 2001, 2005; Kirkpatrick 2007). Regarding species diversity, this sub-family has 61 species, of which 46 species were found in Asian countries (Groves 2005; Osterholz et al. 2008; Geissmann et al. 2010). In Vietnam, there are 12 species were assigned into Colobinae, belonging to three genera: Trachypithecus (8 species), Pygathrix (3 species) and Rhinopithecus (1 species) (Nadler & Brockman 2014). Three species of genus Pygathrix are black-shanked douc (P. nigripes), grey- shanked douc (P. cinerea) and red-shanked douc (P. nemaeus) (Groves 2001). As their common name, those three species can be easily recognized based on the color of leg and face. While the leg is black and face is greenish in black-shanked douc, the light orange face appears in other two species but leg is red in red-shanked douc and grey in grey-shanked douc (Nadler et al. 2003). Red-shanked douc is considered as the most beautiful primate species in Vietnam and the world because of the colorful pelage (Figure 1.1). Version: 1.0 Client: ERM Vietnam 8 October 2020 Page 3 PRIMATES