Orchid conservation in a small island: current study and challenges of Dendrobium striaenopsis conservation in Angwarmase island nature reserve, Moluccas, Indonesia

Abstract

Orchids are considered one of the most commercially valuable in ornamental plant. Dendrobium striaenopsis, an endemic orchid to Tanimbar Islands, Moluccas, is widely notable species for orchid hybridizing. However, with its restricted distribution to small islands, this species is prone to extinction. To date, the ecological aspects of D. striaenopsis are not well studied, thus can hamper its conservation efforts. 30 plots in 3 different types of habitat in Angwarmase Island Nature Reserve were surveyed to assess its abundance and habitat. The locals surrounding the reserve were interviewed to identify potential threats. 165 individuals D. striaenopsis were found during survey. The result indicated that D. striaenopsis was not host-specific orchid species. The species was found in 15 species host trees with Lumnitzera racemose was the common host species. Zone 2 (upper part of the main stem) was revealed as the most favorable part at the host tree (105 individuals). It was found that the habitat of the species was threatened by agriculture activities. Besides, D. striaenopsis was also traded illegally by locals.

Diversity and morphological relationship of orchid species (Orchidaceae) in Bangka Island, Indonesia

“…The population of orchids in their habitat has decreased due to forest conversion for residential, industrial and other purposes, such as illegal harvesting because of great demand for wild orchid species, especially rare species, despite the fact that most orchid products are produced legally (via cultivation, for example) (Broto et al 2020). These activities threaten their existence in nature.…”