Orangutan population density, forest structure and fruit availability in hand-logged and unlogged peat swamp forests in West Kalimantan, Indonesia

AbstractPongo pygmaeus pygmaeus is a subspecies of Bornean orangutan whose distribution is restricted to the northern part of the Kapuas River, West Kalimantan, and is categorized as Critically Endangered. In October 2017 we carried out a survey to estimate orangutan density in the peat-swamp forests of the Sungai Palin watershed, of the upper Kapuas river, Kapuas Hulu, West Kalimantan, Indonesia. Surveys for orangutans in 1991, in nearby Nanga Awen, had indicated the presence of orangutans in the peat-swamp forests of this area. We used distance sampling techniques to estimate orangutan densities from nest observations. We recorded 76 orangutan nests along 4.5 km transects in Sungai Palin in 2017, and 71 orangutan nests were observed along 4.3 km transects in Nanga Awen in 1991, giving densities of 1.29 and 2.62 individuals/km2, respectively. The results of this orangutan survey can be used as a baseline for monitoring of orangutan populations for conservation and management of this watershed landscape.

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Inventory of macrofungi at peat swamp forest area, Kapuas Hulu, West Kalimantan

Journal of Microbial Systematics and Biotechnology ◽

10.37604/jmsb.v1i1.17 ◽

2019 ◽

Vol 1 (1) ◽

pp. 11-18

Author(s):

Noverita ` ◽

Tatang Mitra Setia

Keyword(s):

Food Source ◽

Forest Area ◽

Swamp Forest ◽

Collection Method ◽

Peat Swamp Forest ◽

West Kalimantan ◽

Transect Line ◽

Diverse Species ◽

Peat Swamp

The areas surrounding peat swamp forest at Dusun Meliau and Bukit Peninjau, Kapuas Hulu, West Kalimantan host a diverse species of flora and fauna, including macrofungi. However, the information on the macrofungal diversity in this area has not been reported. The goal of this study was to obtain information on the diversity of macrofungi that can be used as food and medicine. Data was collected by direct modified collection method using plot (10 × 20 m) with interval 10 m along the transect line. A total of 79 specimens of macrofungi discovered from the two locations, of which 23 and 66 specimens were collected from Dusun Meliau and Bukit Peninjau, respectively. Of the 79 macrofungi specimens, 16 specimens were potential as a food source, and 41 as medicine. The macrofungi in this study was dominated by members of Ordo Aphyllophorales.

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Pengembangan Komoditas Pertanian Unggulan di Wilayah Perbatasan Bengkayang Mendukung Pengembangan Lumbung Pangan

Jurnal Tataloka ◽

10.14710/tataloka.22.3.331-341 ◽

2020 ◽

Vol 22 (3) ◽

pp. 331-341

Author(s):

Joko Mulyono

Keyword(s):

Population Density ◽

Oil Palm ◽

Crop Production ◽

Agricultural Land ◽

Agricultural Productivity ◽

Secondary Data ◽

Border Region ◽

Agricultural Commodities ◽

Location Quotient ◽

West Kalimantan

Agricultural productivity in the border region of Bengkayang Regency is low, on one side the area of agricultural land is quite extensive (89.23%) coupled with a population density of only 44 people/km2. The research objective was to determine the leading agricultural commodities in the border region of Bengkayang Regency, West Kalimantan Province to support the development of a national food barn. This study uses secondary data covering data on crops harvest area, horticulture crop production, plantation production, and livestock populations in 2011-2015 obtained from the Bengkayang Regency Central Statistics Agency (BPS), West Kalimantan. The data is analyzed by analysis of Location Quotient (LQ) and Shift Share Analysis (SSA). The results of the study showed that oil palm was the plantation’s leading commodities in the border region of Jagoi Babang Subdistrict and pepper in Siding SubDistrict. Cows, pigs, and ducks are the leading commodities of livestock in the border region of Jagoi Babang Subdistrict and ducks in Siding Subdistrict.

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