Judul: Butterfly Community of Superfamily Papilionoidea (Lepidoptera) at Gunung Meja Recreational Forest Area, Manokwari, Papua Barat
Abstrak: Gunung Meja, one of the forest areas in Manokwari, West Papua province, has been designated as a recreational forest since 1980. Gunung Meja covers 460.25 ha and is located at 75 – 175 m asl. Gunung Meja is directly adjacent to residential areas, so that the community activities, such as felling trees and gardening are often conducted in the area. These can interfere with the existence of flora and fauna inside, including butterflies. To know the impact of intrusive human activities on the forest area, it is necessary to obtain basic information about what flora and fauna are present there. This study aims to record the butterfly community in the area. Observations of butterflies were done by scan sampling on primary forest, secondary forest, gardens and settlements. Sampling and measurement of environmental parameters were performed in the morning and afternoon for seven weeks. This study recorded 113 species and 4.049 individuals of butterflies. There were 75 species in primary forest, 77 species in secondary forest, and 63 species in gardens and settlements. The number of species found was still increasing until the last day of the observation. Shannon- Wiener index (H’) calculation showed that diversity in primary and secondary forests were 3.48 and 3.50, respectively, thus classified as high (H’ > 3). Sorensen index calculation (CN) showed high value reaching 0.5 quantitatively. The numbers of butterflies both species number and individual number, observed in the morning were higher than those in the afternoon. There was significant effect (P < 0.05) of temperature, RH, light intensity, and canopy coverage to the number of individual butterflies. The result of PCA analysis showed that the environmental parameters in primary forest, secondary forest, gardens and settlements influenced the number of species and number of individuals.
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Judul: Biodiversity of superfamily papilionoidea butterflies (Lepidoptera) at Bantimurung-Bulusaraung National Park, Maros Regency, South Sulawesi
Abstrak: Bantimurung-Bulusaraung National Park is one of national parks in Indonesia which has high diversity of butterflies. Increasing number of tourists and local butterfly collectors have caused changes of the butterfly habitat and may decrease butterfly population in the park. Aim of the research was to study the diversity of the papilionoid butterflies in Bantimurung-Bulusaraung National Park based on different habitats. The observations were done by scan sampling method in the morning and afternoon at three locations i.e., Pattunuang Nature Reserve, Leang-leang Nature Reserve, and Bantimurung National Park. Results showed that 144 spesies and 6.802 individual of butterflies were found at the areas within 7 weeks of observation. At Leang-leang Nature Reserve, Pattunuang Nature Reserve and Bantimurung National Park were found 113 spesies (2.024 individu), 101 spesies (1.828 individu) and 98 spesies (2.950 individu) of butterflies, respectively. The diversity of butterflies was higher in the national parks (H’ > 3). Pattunuang Nature Reserve has higher value (H’ = 4,06) than Bantimurung National Park (H’ = 3,97) and Leang-leang Nature Reserve (H’ = 3,87). Sorensen similarity index (CN) showed that three research locations were different community structures because there were several different dominant species at each location. Statistically, wind speed gave more significant effect on the number of individuals butterfly than other climate parameters.
Keyword: Graphium androcles, Papilio blumei, Catopsilia pomona, Aoa affinis, Faunis menado

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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