Hadi S. Alikodra

STATUS POPULASI DAN KONSERVASI BEKANTAN (Nasalis larvatus Wurmb. 1787) DI HABITAT RAWA GELAM, KALIMANTAN SELATAN

ABSTRACT A study on population of proboscis monkey (Nasalis larvatus Wurmb.) was conducted in the area of riparian ecosystem of Rawa Gelam, Tapin District, South Kalimantan duringthe period of February-March 2014. The purpose of this study was to determine the condition and the structure of the proboscis monkey population living outside the forest area. Rawa Gelam ecosystem is a cultivation area located on riverbanks of the Puting river. The remaining vegetation at Rawa Gelam contains only a maximum of 200 meters in width, and behind it there were paddy fields and palm oil plantations. The population of proboscis monkeys was counted using Total Count Sampling method. Result of this study showed that the population of proboscis monkeys in Rawa Gelam consisted of nine groups, with the total number of individuals was 192. The population density was 28.34 individuals/km2 with a group density of 1.34 groups/km2. In addition to this species, Rawa Gelam habitat was also inhabited by two other primate species. Seven groups of long-tailed macaques (Macaca fascicularis) and five groups of langurs (Trachyphitecus auratus) were recorded from this area, with the number of individuals of 47 and 76, respectively. The main threat of proboscis monkeys conservation in Rawa Gelam was habitat destruction and change of habitat function. Proboscis monkeys can be saved from the local extinction through habitat restoration needs to be done by applying agroforestry system and developing integrated ecotourism development. Keywords: Conservation, Nasalis larvatus, proboscis monkey, population, Rawa Gelam. ABSTRAK Penelitian populasi bekantan dilakukan di kawasan ekosistem riparian Rawa Gelam, Kabupaten Tapin, Kalimantan Selatan pada bulan Februari-Maret 2014. Tujuan penelitian ini adalah untuk mengetahui kondisi populasi dan struktur kelompok bekantan yang hidup di luar kawasan hutan. Kawasan ekosistem Rawa Gelam merupakan lahan budidaya yang terletak di kanan-kiri Sungai Puting. Vegetasi Rawa Gelam yang tersisa hanya selebar maksimal 200 meter dan di belakangnya terdapat persawahan dan kebun kelapa sawit. Penghitungan populasi bekantan dilakukan dengan metode Total Count Sampling. Berdasarkan hasil penelitian, diketahui populasi bekantan di Rawa Gelam sebanyak sembilan kelompok bekantan, dengan jumlah 192 individu. Kepadatan populasi bekantan di kawasan ekosistem Rawa Gelam adalah 28,34 individu/km2 dengan kepadatan kelompok 1,34 kelompok/km2. Selain bekantan, kawasan Rawa Gelam juga dihuni oleh dua jenis primata lainnya, yaitu Monyet Ekor Panjang (Macaca fascicularis) dan Lutung Hitam (Trachyphitecus auratus). Tercatat ada lima kelompok Lutung Hitam dengan jumlah 47 individu dan tujuh kelompok monyet ekor panjang dengan jumlah 76 individu. Ancaman utama konservasi bekantan di Rawa Gelam adalah perusakan habitat dan perubahan fungsi kawasan. Untuk menyelamatkan bekantan dari kepunahan lokal, perlu dilakukan restorasi habitat dengan menerapkan pola agroforestridan pengembangan ekowisata terpadu. Kata kunci: Konservasi, Nasalis larvatus, bekantan, populasi, Rawa Gelam.

TINGKAT KESESUAIAN SUAKA MARGASATWA CIKEPUH SEBAGAI HABITAT KEDUA BADAK JAWA (Rhinoceros sondaicus Desmarest, 1822)

Forest land clearing withoutt appropriate method for oil palm plantations can reduce the diversity of wildlife in that area. To decrease these impacts, data of wildlife diversity and the distribution needs to be known, so that it can be determined which area can be opened or must be maintained. The research was to determine the diversity and conservation status in PT. Riau Sawitindo Abadi (PT. RSA). The Research was conducted in April 2015. Data was collected by interview, literatur studies and field observation (direct and indirect observation). The results showed that the RSA is a habitat for 78 wildlife species which consists of 52 species of birds (13 species protected), 16 species of mammals (13 species protected) and 10 species of reptiles (5 species protected). Forest area of PT. RSA has an important role as the habitat as well as a corridor for these animals. Keywords: biodiversity, conservation status, habitat, land clearing, wildlifeRecently a comprehensive source of data and information on carbon storage in various types of forest ecosystems and other land use in Java Island are still limited. This study was carried out in a conservation area of Bromo Tengger Semeru National Park (TNBTS) that represents the ecosystem types of lowland rain forest, sub-montane forests and mountain forests in Java. The information on carbon sequestration and carbon stocks at TNBTS becomes important. The main objective of this study was to estimate biomass and carbon storage in various types of forests in TNBTS using allometric approaches. The additional objectives were to estimate carbon storage on various land cover and to estimate the changes in carbon storage by land cover changes during the period 1990, 2000 and 2013. The measurement of forest carbon include aboveground, understorey, necromass and litter pools covering all ecosystem such as primary forest, secondary forest with high- and low- canopy density. This study found that the average of carbon stocks in primary forest were 193,49 ± 125,98 tonC/ha, and were 267,42 ± 119,25 tonC/ha in secondary forest. The total carbon stocks in the period 1990–2000 has decreased about 22.6 tonC/ha/year and in the period 2000–2013 has increased about 41.2 tonC/ha/year. The enhancement of carbon stocks in this area was driven by an intensive forest protection, good monitoring and land rehabilitation. Keywords: biomass, carbon storage, carbon stock, land cover , national park