Judul: Studi Populasi dan Penyebaran Babi Hutan Sulawesi (Sus celebensis Muller dan Schlegel, 1843) di Suaka Margasatawa Tanjung Peropa, Sulawesi Tenggara
Abstrak: Sulawesi Warty Pig (Sus celebensis) is endemic to Sulawesi, Indonesia. Very few data and information are available for this species. Study of demography and distribution are necessary to manage population this species in their natural habitat. This study was conducted in Tanjung Peropa Wildlife Reserve, Southest Sulawesi from Juni until July 2006. Population was estimated using line transect method. result of the vegetation analyses shown that the dominant species in riparian, lowland and bamboo forest were wewu, kapu wone and kowuna respectively. Distribution of Sulawesi warty pig in the study area, was systematic. For local distribution, distribution in bamboo and riparian forest were random and in lowland forest was systematic. There was 172 species of plant species recorded in study area, 109 species of them were food item of sulawesi warty pig. These animals were frequently found wallowing in bamboo and feeding in riparian forest. Rest sites of sulawesi warty pig in caves and rock shekters and nest area in hills. Deforestation and poaching were the main threats at their population in natural habitat. Status of sulawesi warty pig is still unprotected, thus the management of population in their natural habitat ws facing some difficulties. For conservation at this species its status should be given and clarified
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Judul: Karakteristik Habitat dan Populasi Tarsius (Tarsius fuscus Fischer 1804) di Resort Balocci Taman Nasional Bantimurung Bulusaraung Sulawesi Selatan
Abstrak: Tarsier (Tarsius fuscus Fischer 1804) is one of endemic primates of South Sulawesi, which has been protected by Government Regulation No. 7 of 1999. This species is categorized as vulnerable by the International Union for Conservation of Nature (IUCN) Red List and on Appendix II of the Convention on International Trade in Endangered Species (CITES). The objective of this study were (1) to identify habitat characteristics including physical condition, composition and structure of vegetation and food (insects) availability, (2) to examine the distribution and population of tarsier. This study was conducted in Resort Balocci, Bantimurung Bulusaraung National Park from May to July 2011. The data collected consisting composition and structure of vegetations, the number and diversity of insects, distribution and population size of tarsier. Characteristic of vegetations data was collected using a single swath method. Collection of insects as potential food of tarsier was taken by light trap method and identified in Laboratory of Insect Taxonomy, Plant Protection Department, Faculty of Agriculture, Bogor Agricultural University. Population size was determined using concentration count method around the nesting trees of tarsier. The observations were started at 05.00-07.00 and 16.30-18.00. This study showed that tarsier inhabited secondary forest, plantations and vegetation near the settlement (yard). Nesting trees of tarsier could be observed in the crevices of the rocks, in the cracks of ficus trees (Ficus spp.), sugar palm tree (Arenga pinnata) and bamboos (Bambusa spp.). In addition to the nesting trees, there are Macaranga hispida and Artocarpus altilis. The secondary forest has more insects than plantations and vegetation near the settlement. A total of 112, 89 and 80 individuals of insects recorded in the secondary forest, vegetation near the settlement and plantation respectively. A total of 13 groups consisting of 44 individuals of tarsiers recorded in the study area. There were 31 individuals in secondary forest, 9 individuals in plantation and 4 individuals in vegetation near the settlement. Population densities of tarsier were 151 individuals/km2 in the secondary forest, 36 individuals/km2 in the plantation and 23 individuals/km2 in the vegetation near the settlement.
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Judul: Elektrokatalis Oksigen Evolusi Berbasis CaFe2O4 dan Dopingnya dengan Zn.
Abstrak: Elektrolisis air merupakan salah satu cara terbaik dalam memperoleh sumber energi yang dapat diperbarui. Fenomena overpotential yang terjadi selama reaksi mengakibatkan reaksi oksidasi air sulit dicapai, tetapi hal ini dapat ditangani dengan menggunakan elektrokatalis. Material disintesis dengan metode kopresipitasi. Material yang telah disintesis dicirikan menggunakan spektroskopi inframerah transformasi fourier, spektroskopi serapan atom, dan difraktometer sinar-X (XRD). Hasil XRD menunjukkan masih banyak fase yang muncul dalam bentuk prekursornya. Hal ini diduga karena garam NaCl yang terbentuk tidak cukup untuk menurunkan suhu kalsinasi dari kalsium ferit. Uji aktivitas elektrokimia pada elektrokatalis memberikan nilai kemiringan Tafel (β) yang rendah dan arus pertukaran (i0) yang tinggi. Elektrokatalis CaFerit Zn0.8 dalam medium NaOH 0.5 M memberikan aktivitas yang paling baik dibandingkan ketiga elektrokatalis yang lainnya. Sementara itu, semua elektrokatalis yang dibuat memiliki produktivitas yang tinggi dan inert terhadap elektrolit.
Keyword: aktivitas elektrokimia, elektrokatalis, overpotential