Detarium microcarpum (Caesalpiniaceae) is a West African economic significant priority fruit tree species. In Benin, the species is overexploited in many ecological regions, while very little research focuses on its viability and conservation of its genetic diversity. In the perspective of the biodiversity sustainable use, this work aimed at determining the use value of different organs and its impact on the species' vulnerability. Thus, 202 respondents were surveyed and information regarding utilization of the different organs were collected. Data were used to evaluate each organ's utilization frequency and the vulnerability index for the species. Results indicated that locals use D. microcarpum in food, medicine, handcrafting and spiritual applications. It is also valued as fire and technological wood as well as like animal forage. The utilization frequency varies between 2.5 (for the fruits) and 83.20% (for the wood). This intensive wood utilization explains the high vulnerability: 2.67. Only administratively preserved and sacred forests still harbour adult individuals. It is, therefore, urgent to include these vulnerability data in any management strategy for a better use and conservation for D. microcarpum.
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