BIODIVERSITY RICHNESS OF TERRESTRIAL ORCHIDS IN BROMO TENGGER SEMERU NATIONAL PARK, INDONESIALita Soetopo and Muhamad Jauhari
Terrestrial orchids live on litters and rocks on the forest floor. The natural habitat makes these orchids areat risk of being vulnerable, either by nature or human and animal interference. Terrestrial orchids attract less peopleâs attention because most of them are neither large nor beautiful, unlike the epiphyte orchids.But these terrestrial orchids enrich the world of orchid biodiversity. The exploration was conducted from January to February 2018. The objective of this research was to explore the biodiversity richness of terrestrial orchids at Pronojiwo resort and at Senduro resort area Bromo Tengger Semeru National Park, Indonesia,and compared to the findings in 2004. The data was garnered from a exploratory descriptive survey with random sampling method. The results showed that the value of biodiversity at Pronojiwo resort was 2.52 in2018 and 2.44 in 2004. While, at Senduro resort, the value of biodiversity was 2.48 in 2018 and 2.73 in 2005.The biodiversity richness of terrestrial orchids at Pronojiwo and Senduro resort, Bromo Tengger Semeru National Park included in moderate category. At Pronojiwo, we found 17 genera, 24 species, and 2541 individuals of terrestrial orchids in 2018. While, at Senduro, we found 16 genera, 20 species, and 563 individuals of terrestrial orchids.