Korelasi Fenologi Pohon dengan Jumlah Sarang Orangutan Sumatera (Pongo abelii) pada Hutan Primer Resort Sei Betung Taman Nasional Gunung Leuser

Abstract

MARINA OKTAVIANI BR KARO: Correlation Phenology Tree with Nest Amount Sumatran Orangutan (Pongo abelii) In Primary Forest Resort Sei Betung Gunung Leuser National Park, under the supervision of PINDI PATANA and KANSIH SRI HARTINI. Phenology is the period of the phases that occur naturally in plants, ranging from phase to phase the young leaves of fruit. Food availability affect the orangutan activities, including activities to make nests. This study was conducted to determine how the correlation between the phenology of trees with the number of nests made by orangutans in primary forest Resort Sei Betung, Gunung Leuser National Park. Zweifel method used in this study to determine the estimated productivity of trees and observations orangutan nests on a track that has been created. This study was conducted over 6 months (March - August 2015). The results showed phenological observations of trees in relatively low due to the dry season is long enough and the weather is hot. There are 837 trees feed on track with the kind of observation at most that Polyalthia sumatrana and non feed 730 trees with most types of Aglaia edulis. Found 15 orangutan nests on the track during the study performed. Tree phenology correlated very weak and insignificant with nesting by orangutans.