Indonesian

Abstract

Suryawan D, Sutyarto E, Umaya R, Kurnia A, Hadiyan Y. 2015. Distribution of invasive alien species of Acacia decurrens in Mount Merapi National Park. Pros Sem Nas Masy Biodiv Indon 1: 738-742. Mount Merapi National Park (MMNP) is a natural conservation area targeted to keep two vital ecological functions to protect the area. One of the key functions is to protect the existence of biodiversity. The dynamic of biodiversity had occurred after Mount Merapi erupted. Some endemic species were loss, regrowth and unknown species might emerge. Acacia decurrens is one of the species that grow fast, scattered and dominant after Mount Merapi eruption. The stands of A. decurrens in a certain domination level had the potential to change the native ecosystem of Mount Merapi. Hence the appropriate management is required. Therefore, this species is considered as an invasive alien species (IAS) in MMNP area. The purpose of this study was to know the distribution of A. decurrens in Mount Merapi National Park area. Vegetation analysis was done by using a systematic track sampling method at four locations of observation. The results of the study showed that the species density of A. decurrens on various growth stages varies. The pole and sapling stages of this species grew dominantly at all observation locations, while the tree and seedling stages were not. The hot spot of A. decurrens was in Cangkringan Resort area, Sleman and Kemalang, Klaten.