Diversity and conservation strategy of orchids under anthropogenic influence in Taman Wisata Alam Curug Setawing, Yogyakarta

Abstract

Kurniawan FY, Setiaji A, Putri F, Suyoko A, Semiarti E. 2018. Keanekaragaman. Pros Sem Nas Masy Biodiv Indon 4: 173-
177. Yogyakarta has unique ecoregions with a high diversity of orchids. Forest in Taman Wisata Alam Curug Setawing (TWACS),
Yogyakarta is located in a community protected forest area and keeps a high diversity of orchids. Relative to other plant families,
orchids are subject to high levels of threat, such as over-collection, land clearing and climate change. In this study, we describe the
diversity of orchids in newly opened tourist areas and their influencing factors and conservation strategies under anthropogenic areas.
Ten imaginary plots of 20 m x 20 m each were established randomly by selecting points along the two trail in location. All collected
orchids are identified by matching the collection sample with orchid flora books. 15 species of wild orchids can be found in TWACS.
Based on subfamily distribution, 73.33% of species including Epidendroideae, 20% Orchidoideae, and 6.66% Vanilloideae. Based on
growth form, 46.66% of species belong to epiphytes and 53.33% terestrial orchids. Dendrobium crumenatum has the highest of IVI
compared to other species. Zeuxine sp. found only one individual because it is likely to enter the dormancy period. The study reveals
that to improve the population size, trees (mainly Albizia chinensis, Syzygium aromaticum, bamboo, Artocarpus heterophyllus, and
Albizia saman) should be planted in areas where the orchid species is recently missing through regular inventory.