Abstract
Ex situ genetic conservation refers to the conservation of species outside their natural habitats. In the case of Gonystylus bancanus (Miq.) Kurz, an endangered species listed on CITES Appendix II and the IUCN Red List as Critically Endangered, ex situ conservation effort has been undertaken by PT. Arara Abadi in Riau, Sumatra collaboration with the Centre for Forest Biotechnology and Tree Improvement Agency. This initiative aimed to preserve the genetic diversity of G. bancanus and ensure long-term survival by reducing the risk of extinction caused by habitat loss and other threats., Genetic material from G. bancanus populations in Sumatra and Central Kalimantan was collected during 2012 to 2016. The ex situ genetic conservation was established in PT. Arara Abadi, a private forest company. Each population was planted in two sites and each plot initially consisted of 456-546 plants covering an area of 1-1.3 hectares. After three years, the G. bancanus in ex situ conservation plot exhibited better growth in open areas than shaded ones, highlighting the species’ preference for exposed environments. The successful growth up to three-year-old plants demonstrates the effectiveness of ex situ conservation efforts of the G. bancanus and suggests the potential for future reintroduction or restoration programs.
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