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The last stand: Demographic and population genomic analysis reveals terminal endangerment in tropical timber species Vatica guangxiensis
Conservation Letters ( IF 7.7 ) Pub Date : 2024-07-01 , DOI: 10.1111/conl.13036 Wenji Luo 1, 2 , Qian Tang 3 , Balaji Chattopadhyay 4, 5 , Kritika M. Garg 5, 6 , Frank E. Rheindt 3 , Alison K. S. Wee 1, 7
Conservation Letters ( IF 7.7 ) Pub Date : 2024-07-01 , DOI: 10.1111/conl.13036 Wenji Luo 1, 2 , Qian Tang 3 , Balaji Chattopadhyay 4, 5 , Kritika M. Garg 5, 6 , Frank E. Rheindt 3 , Alison K. S. Wee 1, 7
Affiliation
Tropical and subtropical trees provide key ecosystem services but are facing global population decline due to logging, habitat degradation, land conversion, and climate change. Vatica guangxiensis used to be a characteristic timber species of China's tropical forests but is now terminally endangered (280 individuals) and fragmented into three relictual populations in southwest China. Generating genome-wide DNA for ∼82% of all living tree individuals of this species complex, we found evidence for a late Pliocene division into two species-level lineages that have not had gene flow for approximately 3 million years. All three relictual populations exhibited a loss of genetic diversity and recent bottlenecks. In addition, forward simulations indicated a likely population collapse in all three populations within the next century. Our study generates a model framework for the integration of genomic evidence—including evolutionary history, current genetic variation, and future projections—into conservation planning.
更新日期：2024-07-01
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