ESTIMASI KEPADATAN ORANGUTAN SUMATERA (PONGO ABELII LESSON, 1827) BERDASARKAN JUMLAH SARANG DI PERBATASAN CAGAR ALAM DOLOK SIBUAL BUALI
ABSTRACT: Forest clearance for
a variety of purposes and functions over the region led to the limited habitat
for wildlife. Wildlife habitat is fragmented into several regions led to the
survival of a population of a species depends on habitat conditions. The
purpose of this study was to determine the population density of orangutans
based on the number of nests in the Bulumario Village, Nature Reserve area
Dolok Sibual Buali, District Sipirok, South Tapanuli, North Sumatra Province
also determine the types of dominant vegetation is used as a nesting tree of
the Sumatran orangutan in the village Bulumario, Knowing the value and Importance
Value Index (IVI) of trees located in the village of Bulumario. This study was
conducted in May 2014 until June 2014 in Nature Reserve Dolok Sibual Buali,
Bulumario Village, District Sipirok, South Tapanuli, North Sumatra Province The results of this study indicate orangutan
population density based on the number of nests in the Bulumario village and
district CADS is 0,023 individuals/km2 or 2,332 individuals/ha of the total
number of nests found 49 nests. Most nests were found at a distance of 0-100 meters
of the entire track the number of 14 nests (28,57%) and the class that
dominates nest class D is the number of 23 nests (46,94%). Dominant position of
the nest is in a position which is a position I nest close to the main stem of
the tree with the nest number 24 (48,98%). Generally the nest is found at an
altitude of 6-10 meters with a sum of 15 nests (30,61%). Important Value Index
(IVI) is highest on the type Hoteng (Quercus gamelliflora Blume.) Of the family
Fagaceae with IVI 33,83%, and the Moraceae family that is dominated by the
number seven species.
Penulis: Ferry Aulia Hawari,
Pindi Patana, Erni Jumilaty
Kode Jurnal: jpkehutanandd150142
