Judul: Pemodelan Spasial Kesesuaian Habitat Kukang Jawa (Nycticebus javanicus Geoffroy 1812) di Cisurupan Kabupaten Garut
Abstrak: Javan Lorises (Nycticebus javanicus) are nocturnal primates endemic to Java island. Their habitats are primary and secondary forest vegetation, plantation area, and bamboos vegetation. They were categorized as endangered species because of the illegal trading and their habitat degradation. Spatial modelling was one of many kinds of Javan loris insitu conservation efforts of the especially in Cisurupan Garut. The habitat suitability factors of Javan lorises were altitude, slope, NDVI, surface temperature,distance of sleep trees and feed density. The Javan lorises habitat suitability based on PCA was Y = (1.952*altitude) + (1.952*slope) + (1.028*NDVI) + (1.952* surface tempe- rature) + (1.347* distance of sleep trees) + (1.952*feed density), with validation value of 100%. Total area habitats Javan lori is 7843,02 ha. As many as 534.55 ha of their habitat were categorized into low suitability,2968.11 ha categorized into medium suitability, and 3971.87 ha of its were categorized into high suitability.
Keyword: suitability habitat., javan loris, Cisurupan

Judul: Daerah jelajah dan penggunaan ruang Kukang Jawa (Nycticebus javanicus) di Taman Nasional Gunung Halimun Salak Jawa Barat
Abstrak: The Javan slow loris (Nycticebus javanicus) is a slow moving nocturnal prosimian primate. Javan slow lorises are considered Critically Endangered by the International Union for the Conservation of Nature (IUCN 2013), as well as being listed in Appendix I of Convention on International Trade in Endangered Species (2007). To date, there is limited source information available regarding wild loris ecology and behavior. In this study, home range areas and use space of wild javan slow loris was carried out in Mount Halimun-Salak National Park, in Bogor, West Java, Indonesia. This study aims to measure home range size and to analyze activity budgets in natural forest conditions. Kernel Home range methods were used to analyze home range areas, while Point Centered Quarter methods were used to collect habitat data, and five minute Instantaneous-Focal Animal Sampling was used to observe and record behavioral data. The observed lorises were two adult females, one of which (Individual I) was pregnant. Analysis showed contiguous home range sizes of 5.43 hectares and 5.58 hectares for Individuals I and II respectively, as well as a core home range area of 1.77 hectares and 1.60 hectares. These home ranges were larger than that reported in Malaysian Nycticebus coucang. Behavioral analysis showed that daily activities were dominated by travel, feeding, active, and foraging, which took place primarily in the lower canopy stratum (2 – 15 m), whereas sleeping typically occurred in the medium canopy stratum height (15 – 22 m). The use of space of javan slow loris correlated with height, substrat, contact, and size of branch. Javan slow loris preferred heights positions (5 – 7 m), and the size of a small twig branch categories. Javan slow loris preferred to use kaliandra (Calliandra calothyrsus), bungbuai (Plectomia elongata), and kisampang (Evodia latifolia) as foraging site and sleeping tree.
Keyword: Bogor Agricultural University (IPB), lower canopy, kernel home range, sleeping tree, Core area

Judul: Membran Komposit Kitosan-Natrium Alginat untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Composite of chitosan and sodium alginate can be utilized as base material of proton exchange membrane (PEM). The composite membranes were produced by various concentrations of chitosan-sodium alginate, namely 3:3, 3:4, 3:5, 3:6, 4:3, 5:3, and 6:3 (% b/v). The composites were characterized by using Fourier transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM), and were tested for the performance as PEM from the proton conductivity obtained by using impedance spectrometer. The FTIR spectrum indicated the NH3C group at 1637.29 cm-1 and symmetrical COO group at 1253.68 cm-1 indicating interactions between chitosan and sodium alginate. SEM micrographs showed that the composite membrane was nonporous. Composite membrane with 3:5 chitosan-sodium alginate composition had the highest proton conductivity, namely 9.594 × 10-7 S/cm. Based on this research results, chitosan-sodium alginate composite membrane can be applied well in direct methanol fuel cell system.
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