Abstract
Abstract The Tetebatu Resort Forest area is located within the tropical forest of Mount Rinjani National Park and possesses high biodiversity potential, including numerous epiphytic orchid species. However, evaluation of the structure, composition, stability, and evenness of the orchid community in this area has not been widely carried out. This study aimed to analyze the diversity and structure of epiphytic orchid communities in the Tetebatu corridor, Mount Rinjani National Park. Sampling was conducted in 20 m × 20 m plots across three research stations, representing an elevation gradient. A total of 429 individuals, representing 18 species from 9 genera of epiphytic orchids, were identified in the study area. Ceratostylis and Bulbophyllum were the two taxa with the highest diversity and abundance. Ceratostylis graminea, Ceratostylis capitata, Pholidota carnea , and Bulbophyllum angustifolium are the dominant species. Orchid diversity in the Tetebatu corridor was classified as moderate (H’ = 2.25), with high species evenness (E = 0.78). The discovery of the endemic orchid Dendrobium rindjaniense and high community uniformity indicate the importance of corridor-based orchid conservation in Mount Rinjani National Park. Conservation efforts in this area should prioritize the protection of species with low densities and low importance value index (IVI).