Judul: Sebaran Populasi dan Karakteristik Habitat Monyet Ekor Panjang Di Taman Nasional Gunung Merapi
Abstrak: Long-tailed macaque (Macaca fascicularis) is a widely distributed primate species which experiencing rapid population decline due to habitat loss and degradation, pharmaceutical usage and conflicts with human. Many researches regarding this species has been carried out, but not a particular topic on how volcanic eruptions affected its habitat. Gunung Merapi, a volcano located in Yogyakarta Province and was known as long-tailed macaque habitat, erupted in 2010 and made a massive destruction to the forest ecosystem. This research was aimed to identify the distribution of population, habitat characteristic and the correlation of habitat components to the existence of this monkey in Gunung Merapi forest ecosystem after the eruption took place. Spatial analysis was used to describe the distribution of population, while habitat characteristic was identified using vegetation analysis followed by chi square test. The result showed that 5 groups of this macaque were found spreading in 5 resorts of Gunung Merapi of which these regions were classified as slightly-damaged and moderately-damaged habitat. As for the diversity of plant species, an amount of 85 species was able to be identified and these species were found at the slightly-damaged and moderately-damaged habitats within a group of 82 and 29 species respectively. Of all these species only 21 and 11 species in each group were identified as the macaques’ diet. The result of Chi square test suggested a significant correlation between the existence of long-tailed macaque with habitat components of altitude, temperature, humidity, distance to farm, distance to water, plant species for diet, the number of vegetation species, and vegetation density (seedlings, saplings and trees).
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Judul: Populasi dan Habitat Monyet Ekor Panjang (Macaca fascicularis) di Kawasan Ekowisata Mangrove Wonorejo dan Sekitarnya, Surabaya
Abstrak: Long-tailed macaque is a diurnal nonhuman primate and can be found in various types of vegetation including mangrove forests to mountain forests. The purpose of this research is to identify the population and habitat of Longtailed macaque (Macaca fascicularis) in the Wonorejo Mangrove Ecotourism and surrounding areas, Surabaya. Method of observation population is concentration count and then method of habitat analysis is based on vegetation analysis. The minimum estimation of population size of Long-tailed macaque in the areas was 148 individuals. Sex-ratio of adult macaque was estimatied to be 1 : 2. Macaque population densities was 0,55 individuals/hectare. The Longtailed macaque’s eats are mangrove forest vegetations and animal. There was 9 kind of food, which 7 species of plants and the others species was animals. The macaque has highest tendency for using area in their daily life above the ground (40,54%) and only 29,73% individuals spend the day in bottom of the canopy.
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Judul: Katalis Oksidasi Benzil Alkohol Berbasis Kalsium Ferit dan Kalsium Ferit Didoping Cu.
Abstrak: Oksidasi selektif dari hibridisasi karbon sp3 menjadi senyawa karbonil merupakan salah satu transformasi yang penting dalam kimia, seperti oksidasi benzil alkohol menjadi benzaldehida. Penelitian ini, menggunakan katalis oksidasi benzil alkohol berbasis kalsium ferit (CFO) dan kalsium ferit didoping Cu (CFOCuχ). Katalis disintesis menggunakan metode kopresipitasi dengan prekursor CaCl2•2H2O dan FeCl3•6H2O, serta konsentrasi doping (Cu(NO3)2•3H2O) 10, 30, dan 40% mol terhadap Fe. Sampel dikalsinasi pada suhu 750 oC selama 4 jam. Pencirian material menggunakan spektroskopi difraksi sinar-X pada kalsium ferit (CFO) menghasilkan fase Ca2Fe2O5 dan Fe2O3, sedangkan kalsium ferit didoping Cu 40% (CFO-Cu40%) menghasilkan fase CuFe2O4, Fe3O4, dan CaCO3. Kinerja material dalam oksidasi benzil alkohol dengan H2O2 sebagai oksidator pada suhu 60 dan 75 oC selama 4 jam dianalisis menggunakan kromatografi gas. Katalis terbaik untuk oksidasi ialah CFO-Cu40% dengan persen konversi benzil alkohol 98.47% dan untuk oksidasi benzil alkohol menjadi benzaldehida ialah CFO-Cu10% dengan kadar benzaldehida 6.91%.
Keyword: Kalsium ferit, oksidasi, benzil alkohol, benzaldehida, oksidator