Ground‐dwelling mammal and bird diversity in the southern Annamites: Exploring complex habitat associations and the ghost of past hunting pressure
Nguyen, An; Tilker, Andrew; Le, Duy; Niedballa, Jürgen; Pflumm, Luisa; Pham, Xuan Hoan; Le, Van Son; Luu, Hong Truong; Tran, Van Bang; Kramer‐Schadt, Stephanie; Sollmann, Rahel; Wilting, Andreas
The Langbian Plateau, a biodiversity hotspot in the southern Annamites of Viet Nam, has undergone extensive hunting pressure. However, the limited information on the effects of overexploitation on the current status and community composition of wildlife hinders effective conservation efforts, including the implementation of targeted patrols to reduce snaring. In this study, we conducted a camera-trapping survey across the Langbian Plateau, consisting of a broadleaf evergreen and coniferous habitat mosaic. We recorded 46 ground-dwelling mammals and birds, including several threatened Annamite endemics. Using multi-species Royle-Nichols model and landscape covariates, we found higher richness in broadleaf evergreen forest located in more remote and less rugged areas. We then used species responses to covariates to predict species distribution and identify high-priority areas for conservation. Furthermore, we constructed diversity profiles that indicated higher biodiversity in broadleaf evergreen forest compared to the coniferous forest. Finally, we used a dissimilarity index to assess the level of defaunation, revealing 16% of the community had been lost, with higher levels of defaunation for threatened and larger-sized species. Our findings provide insights into the status, distribution, and occurrence of the ground-dwelling mammal and bird communities in the Langbian Plateau, and can help stakeholders design more effective conservation strategies to protect existing populations.
