Primates of Vietnam: Conservation in a Rapidly Developing Country

Covert, Herbert H.; Hoang, Duc Minh; Quyet, Le Kha; Ang, Andie; Harrison-Levine, Amy; Tran, Van Bang

doi:10.1080/19428200.2017.1337353

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Bach Ma National Park and Hue and Quang Nam Saola Nature Reserves (Thua Thien Hue -Quang Nam): Even though not particularly wellstudied, but with recent records of the douc [61], and the fact that they together form a large continuous protected block in Truong Son region, they should be ranked in top priority sites for the douc conservation Bac -Nam Hai Van special forest areas, Ba Na -Nui Chua and Son Tra Nature Reserves (Thua Thien Hue -Quang Nam): Officially the most famous and recognized habitat of the P. nemaeus, the area supports a reasonably healthy population of the species [5,10]. Also based on model results, we suggest the following areas, despite falling outside main protected areas system, may still support the Red-shanked Douc population and should be considered for future survey efforts and conservation initiatives.…”

Section: Resultsmentioning

confidence: 99%

“…It is diurnal and arboreal, and was recorded at an elevation up to 1,600 m. The doucs are highly folivorous, with around 75% of their diet consisting of leaves, and sometimes buds, fruit, seeds, and flowers [5][6][7]. Behavioral characteristics of this species make it an easy target for hunting, and recent field observations have suggested that the group size may vary considerably as a possible consequence of environmental and human disturbances [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Modeling the Red-shanked Douc (Pygathrix nemaeus) distribution in Vietnam using Maxent

Nguyen

Minh²,

Hung³

et al. 2019

EES

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The Red-shanked Douc (Pygathrix nemaeus) is the only douc species recorded in all three countries of Indochina. It is classified as Endangered by IUCN, and is believed to have experienced a major drop of more than 50% of its population over the last 40 years. The known distribution of main P. nemaeus populations in Vietnam ranges from Pu Mat National Park, Nghe An Province in the North to the Kon Ha Nung, Gia Lai Province in the South. In this study, we used Maxent, a species distribution modeling approach that is shown to a have high predictive power even with low number of occurrence records, to predict the current distribution of the Red-shanked Douc in Vietnam based on published records. The results show that P. nemaeus inhabits a region from Nghe An to Kon Tum Province, with areas from Ha Tinh, Quang Binh, Quang Tri, Thua Thien -Hue, Da Nang -Quang Nam Provinces exhibiting the highest potential. With all model parameters already listed here, studies in the future may incorporate more occurrence records to develop better models, or other environmental variables to assess the influence of different factors on the species distribution. The results also suggest that species distribution modeling, coupled with a carefully checked and filtered occurrence dataset, as well as species-specific model fine-tuning and evaluating, can help address many conservation issues in Vietnam.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling the Red-shanked Douc (Pygathrix nemaeus) distribution in Vietnam using Maxent

Nguyen

Minh²,

Hung³

et al. 2019

EES

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“…There are 25 primate species in Viet Nam, more than in any other mainland South-east Asian country (Blair et al, 2011; Roos et al, 2013). Of these, three are endemic and Critically Endangered, namely the Cat Ba langur Trachypithecus poliocephalus , Tonkin snub-nosed monkey Rhinopithecus avunculus , and Delacour's langur Trachypithecus delacouri (Roos et al, 2013; Covert et al, 2017). Delacour's langur is one of several species of the Trachypithecus francoisi group, which all occur in forest on karst limestone.…”

mentioning

confidence: 99%

Status of a second viable population of the Critically Endangered Delacour's langur in Viet Nam

Nguyen

Trinh-Dinh²,

Lê

et al. 2021

Oryx

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One of the three Critically Endangered and endemic primate species in Viet Nam, Delacour's langur Trachypithecus delacouri, is restricted to the north of the country. The largest remaining population is in Van Long Nature Reserve, Ninh Binh Province, and the second largest is in nearby Kim Bang Protection Forest, Ha Nam Province, with other populations believed to be too small for recovery. The population in Van Long has been well studied but the status of that of Kim Bang has not previously been adequately evaluated. To address this, a survey was conducted during 10 August–7 October 2018. In total, we recorded 13 groups comprising a total of at least 73 individuals, almost doubling the highest number reported in previous studies. We documented six new groups in Lien Son and Ba Sao communes in Kim Bang. Our findings indicate there is a high likelihood that Delacour's langur population in Kim Bang will recover and could be important for the long-term conservation of this Critically Endangered species. However, immediate and appropriate conservation measures need to be implemented to protect the population from major anthropogenic threats, namely poaching and habitat destruction, detected during our survey.

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Efficacy of camera traps in detecting primates in Hue Saola Nature Reserve

Nguyen

Timmins

et al. 2020

Primates

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Primates of Vietnam: Conservation in a Rapidly Developing Country

Cited by 4 publications

References 2 publications

Modeling the Red-shanked Douc (Pygathrix nemaeus) distribution in Vietnam using Maxent

Modeling the Red-shanked Douc (Pygathrix nemaeus) distribution in Vietnam using Maxent

Status of a second viable population of the Critically Endangered Delacour's langur in Viet Nam

Efficacy of camera traps in detecting primates in Hue Saola Nature Reserve

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