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*Viện Khoa học Lâm nghiệp Nam Trung Bộ và Tây Nguyên thuộc Viện Khoa học Lâm nghiệp Việt Nam*

REASSESSMENT AND CONSERVATION STRATEGIES FOR Magnolia tiepii V. T. Tran & N. V. Duy IN VIETNAM

05.05.2026 -

Pham-Doan Nguyen a, Hong-En Le a, Van-Phuc Nguyen a, Si-Hung Ho a, Quang-Cuong Truong b, Thi-Binh Hoang c, Van-Ngoc Nguyen c
 
a Forest Science Institute of Central Highlands and South of Central Vietnam, Da Lat City 66000, Lam Dong Province, Vietnam
b Bidoup Nui Ba National Park, Da Lat City 66000, Lam Dong Province, Vietnam
c Dalat University, Da Lat City 66000, Lam Dong Province, Vietnam
 
ABSTRACT
Magnolia tiepii, a critically endangered species endemic to Khanh Le pass, Khanh Hoa Province (Vietnam), was reassessed for its conservation status, population structure, phenology, and the recorded threats to propose the most appropriate conservation strategies. A total of 29 individuals were recorded, most of which exhibited signs of habitat disturbance and poor health. Nearly 50% of them had a diameter at breast height under 2 cm, and approximately 1/3 were between 1 m and 3 m in height. Over 50% showed physical damage, and the proportion of individuals with poor health was the highest among all the quality categories. The flowering and fruiting periods occurred from October to May of the following year. The population is under severe pressure from anthropogenic activities (deforestation and expansion of industrial plantations), natural-biotic factors (insect pests, frugivorous animals, and parasitic organisms), and climate change. With an extremely limited extent of occurrence (0.068 km2) and fewer than 250 mature individuals, M. tiepii meets the International Union for Conservation of Nature Red List criteria for critically endangered C2a(i) and B1a + c(i). This study proposes a combination of in-situ and ex situ conservation strategies, along with supportive measures in policy development, further research, and community awareness-raising efforts.
 
Keywords: conservation, IUCN Red List, Magnolia, phenology, Vietnam
Sources: Journal of Asia-Pacific Biodiversity (2025)
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