Triebleben bezw. Intelligente Äusserungen beim Orang-Utan, Pongo Pygmaeus Hoppius.

AbstrakOrang utan (Pongo pygmaeus morio) merupakan salah satu primata dilindungi. Sebagian populasinya dapat ditemukan pada Kawasan Reklamasi Pasca Tambang Batubara (KRPT) di PT. Kaltim Prima Coal Sangatta. Penelitian ini bertujuan untuk menganalisis karakteristik vegetasi habitat orang utan di sekitar PT. Kaltim Prima Coal. Metode pengumpulan data vegetasi menggunakan kombinasi jalur berpetak. Hasil penelitian menunjukkan bahwa karakteristik vegetasi habitat orang utan di tiga lokasi KRPT terdiri dari 40 jenis tumbuhan. Sekitar 41-45% di antaranya merupakan jenis tumbuhan yang dimakan oleh orang utan. Nilai indeks keanekaragaman jenis vegetasi (H’) berkisar 1,00-1,09; indeks dominansi (D’) berkisar 0,14-0,40; dan indeks keseragaman (E’) berkisar 0,91-0,99. Vegetasi pada strata pertumbuhan semai dikuasai oleh paku resam (Dicranopteris linearis) dan ilalang (Imperata cylindrica). Strata pertumbuhan pancang cenderung dikuasai oleh jenis Leea indica dan Flemingia congesta. Sementara itu, vegetasi strata pohon dikuasai oleh jenis tanaman reklamasi yaitu Cassia siamea dan Cassia suratensis. Pola regenerasi vegetasi belum berjalan dengan normal, namun proses suksesi telah berjalan dengan hadirnya jenis-jenis alami. Karakteristik vegetasi tidak ideal bagi habitat orang utan. Peningkatan daya dukung habitat perlu dilakukan melalui pengembangan koridor vegetasi antar fragmen hutan tersisa.Abstract Orang utan (Pongo pygmaeus morio) is one of the protected primates. Some of their population might be found in the Mine Closure Area (MCA) at PT. Kaltim Prima Coal Sangatta. The aim of this research was to analyze the characteristics of the vegetation of their habitat at PT. Kaltim Prima Coal. Data was collected by using a combination of line-plot sampling method. The results showed that vegetation characteristic of orang utan habitat in three locations of MCA consisted of 40 plants species, which 41-45% of the plant species were fed by orang utan. Diversity index (H'), dominance index (D') and evenness index (E') were by 1.09-1.00, 0.14-0.40, and 0.91-0.99, respectively. The vegetation on the seedling stage was dominated by Dicranopteris linearis and Imperata cylindrica. The sapling stage was dominated by Leea indica and Flemingia congesta. Meanwhile, the tree stage was dominated by reclamation plants that were Cassia siamea and Cassia suratensis. The regeneration pattern of vegetation has not run normally but the succession process has been starting that indicated by the presence of species naturally. Vegetation characteristics were not ideal for orang utan habitat. Increasing carrying capacity needs to be carried out by developing vegetation corridors among the remaining forest fragments.

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APPENDICITIS IN AN ORANG-UTAN (Pongo pygmaeus) AT ROTTERDAM ZOO

International Zoo Yearbook ◽

10.1111/j.1748-1090.1961.tb02847.x ◽

1961 ◽

Vol 3 (1) ◽

pp. 112-112

Author(s):

D. Vervat

Keyword(s):

Pongo Pygmaeus ◽

Orang Utan

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Population status of the Bornean orang-utan Pongo pygmaeus in a vanishing forest in Indonesia: the former Mega Rice Project

Oryx ◽

10.1017/s003060531300104x ◽

2014 ◽

Vol 49 (3) ◽

pp. 473-480 ◽

Cited By ~ 5

Author(s):

Megan E. Cattau ◽

Simon Husson ◽

Susan M. Cheyne

Keyword(s):

Hydrological Regime ◽

Pongo Pygmaeus ◽

Forest Fragments ◽

Conservation Action ◽

Swamp Forest ◽

Peat Swamp Forest ◽

Peat Swamp ◽

Comprehensive Survey ◽

Size Threshold ◽

Orang Utan

AbstractAs peat-swamp forests in Borneo become progressively more fragmented, the species that inhabit them are increasingly threatened, notably the Endangered Bornean orang-utan Pongo pygmaeus. The area of a failed agricultural project known as the Mega Rice Project in Central Kalimantan, Indonesia, is composed of fragments of peat-swamp forest that are reported to contain orang-utans, although no comprehensive survey has previously been conducted. In a portion of this area we identified remaining forest fragments, using satellite imagery, and surveyed line transects for orang-utan sleeping nests to determine the density, abundance and distribution of the species. The total area of peat-swamp forest in the study area is 76,755 ha, 59,948 ha of which comprises patches at least as large as the home range of a female orang-utan (250 ha). We estimate a mean population density of 2.48 ± SE 0.32 individuals km−2 and a population of 1,700 ± SE 220 or 1,507 ± SE 195 individuals, based on a 25 and 250 ha minimum patch size threshold, respectively. This is c. 40–45% of the original population, and the fragmented population is unlikely to be viable in terms of long-term demographic and genetic stability. To ensure persistence of this population of orang-utans, direct conservation action to connect forest fragments and prevent further loss of peat-swamp forest will be required, including re-establishing the hydrological regime, reforesting barren areas and fighting fires.

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The Orang-Utan in North Borneo

Oryx ◽

10.1017/s0030605300001046 ◽

1961 ◽

Vol 6 (1) ◽

pp. 39-42 ◽

Cited By ~ 6

Author(s):

Ken Stott ◽

C. Jackson Selsor

Keyword(s):

Relative Abundance ◽

Limited Range ◽

Pongo Pygmaeus ◽

Suitable Habitat ◽

The North ◽

North Borneo ◽

Fish And Wildlife Service ◽

The U.S ◽

Orang Utan

In October, 1959, Karl W. Kenyon, Research Biologist of the U.S. Fish and Wildlife Service, and the writers, spent three weeks in North Borneo observing wild primates. During this brief period, we questioned both European and native residents of the Colony on the relative abundance of orang-utans (Pongo pygmaeus) in various sectors, and we carefully recorded such indications as we ourselves noted. Although our own encounters with wild orang-utans were limited, we saw numerous nests, many of recent construction. The results of our inquiries and observations were encouraging enough for us to conclude that the orang in North Borneo is, for the present, in no danger of extinction and that it survives in moderate numbers wherever suitable habitat exists. This in itself should offer sufficient inducement to afford every possible sort of protection to the North Bornean survivors of a species that, elsewhere within its comparatively limited range, is becoming scarce or has already disappeared altogether.

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