Potential Regeneration and Spatial Distribution model of Saurauia pendula Blume in Mount Slamet, Central Java

Abstract

Saurauia pendula Blume is a species of genus Saurauia and belong to Actinidiaceae family. Saurauia pendula spread over on several highlands or mountains in Java Island. Mount Slamet is the second highest mountain on Java with naturally good vegetations. The existence of several threats such as forest fires, destruction, deforestation and forest degradation has caused the condition of these plant species to begin to require attention. This study aims to determine the population of S. pendula, its potential regeneration and spatial distribution model in Mount Slamet area. The study was conducted on four (north, south, west and east) slopes in 2019-2020. Research on population conditions was carried out by following hiking trails and making new paths around the center of suitable habitat. Coordinate data is taken to make spatial analysis using Maximum Entropy (MaxEnt). The results showed that the number of S. pendula was found on the north, west and south slopes at an altitude of 1010-2024 masl. This species has a significant association with Saurauia microphylla de Vriese., Glochidion obscurum (Roxb. ex Willd.) Blume and Castanopsis argentea. The number of mature plants is 106 individuals, which have important role in the distribution of this plant. Analysis of the spatial distribution model shows that S. pendula is estimated to be widely distributed on the western slopes of Mount Slamet.