Judul: Faktor-Faktor Lingkungan Penentu Keanekaragaman Kupu-Kupu di Hutan Kota Srengseng, Jakarta Barat
Abstrak: Faktor-faktor lingkungan penentu yang memengaruhi keanekaragaman kupu-kupu di Hutan Kota Srengseng dapat menjadi informasi dasar pengelolaan habitatnya. Penelitian bertujuan mengukur faktor lingkungan penentu (pakan larva, pakan kupu-kupu, tumbuhan shelter, suhu, kelembapan, Leaf Area Index, kecepatan angin, kebisingan, dan sumber air) serta menganalisis hubungannya dengan keanekaragaman kupu-kupu. Mengukur keanekaragaman, kekayaan, kemerataan, kesamaan, dominansi, menggambarkan sebaran spasial kupu-kupu berdasarkan perbedaan kondisi biofisik tapak. Hasil penelitian menemukan area depan dipengaruhi tumbuhan shelter, pakan kupu-kupu, pakan larva, kebisingan, kecepatan angin, suhu. Area belakang dipengaruhi sumber air, kelembapan, LAI. Area tengah tidak dipengaruhi faktor lingkungan apapun. Sebanyak 36 jenis kupukupu dari 5 famili ditemukan: Hesperiidae 3 jenis, Lycaenidae 8 jenis, Nymphalidae 14 jenis, Papilionidae 5 jenis, Pieridae 6 jenis. Keanekaragaman dan kekayaan jenis tertinggi diperoleh area depan (H’= 3,063; Dmg= 6,435), kemerataan jenis tertinggi diperoleh area tengah (E= 0,664), kesamaan jenis tertinggi diperoleh area tengah dan belakang (Sj= 0,62). Area depan merupakan lokasi paling mendukung keanekaragaman kupu-kupu karena didukung faktor tumbuhan pakan larva dan kupu-kupu, tumbuhan shelter, LAI, dan sumber air., Determinant environmental factors affecting butterfly diversity in Srengseng City Forest could be used as information for its habitat management. Research aimed to measure determinant factors (larval and butterfly foodplant, shelter plant, temperature, humidity, Leaf Area Index, wind speed, noise, water sources) as well as analyzing their relationship with butterfly diversity. Measure diversity, richness, evenness, similarity, dominance and spatial distribution of butterfly species based on site biophysical conditions differences. Results found front area affected by shelter plants, butterfly and larval foodplants, noise, wind speed, temperature. Back area affected by water source, humidity, LAI. Middle area was not affected by any environmental factors. As many as 36 species of butterflies from 5 families were found: Hesperiidae 3 species, Lycaenidae 8 species, Nymphalidae 14 species, Papilionidae 5 species, Pieridae 6 species. Highest diversity and richness in front area (H'= 3,063; Dmg= 6,435), highest evenness in middle area (E= 0,664), highest similarity in middle and rear area (Sj= 0,62). Front area supported butterfly diversity the most because it was supported by foodplants for larvae and butterflies, shelter plants, LAI, and water source.
Keyword: butterflies, diversity, Srengseng Urban Forest

Judul: Diversity of Butterflies at Three Locations with Different Environmental Characteristics in Bogor
Abstrak: Kupu-kupu merupakan serangga yang termasuk ke dalam organisme bioindikator lingkungan. Keberadaan kupu-kupu dipengaruhi oleh faktor biotik (vegetasi pakan ulat dan pakan kupu-kupu) dan abiotik (suhu udara, kelembapan udara, kecepatan angin, leaf area index, ketersediaan sumber air, dan pencemaran udara). Penelitian ini bertujuan mengidentifikasi kekayaan, keanekaragaman, dan kemerataan jenis kupu-kupu pada tiga lokasi di Bogor dan menganalisis hubungan antara komunitas kupu-kupu dengan dengan karakteristik lingkungan yang berbeda pada Kampus IPB, Jalan Jendral Sudirman, dan Jalan K.H. Tubagus Muhammad Falak. Penelitian menggunakan metode transek dan metode eksplorasi. Ditemukan 64 jenis kupu-kupu dari 5 famili yang terdiri atas 40 jenis di Kampus IPB, 24 jenis di Jalan K.H. Tubagus Muhammad Falak, dan 19 jenis di Jalan Jendral Sudirman. Karakteristik lingkungan Kampus IPB yang didukung oleh faktor vegetasi pakan ulat, kelembapan udara, dan leaf area index menjadikannya sebagai lokasi yang paling mendukung bagi kehidupan kupu-kupu. Jumlah jenis, kekayaan jenis dan keanekaragaman jenis kupu-kupu akan meningkat seiring dengan meningkatnya ketersediaan vegetasi pakan ulat. Jumlah jenis akan meningkat seiring dengan meningkatnya kelembapan udara hingga 85%., Butterflies are insects that have been depicted as environmental bioindicator organisms. The presence of butterflies is affected by biotic factors (host and food plants) and abiotic factors (air temperature, air humidity, wind speed, leaf area index, water sources, and air pollution). This study aims to identify the butterfly species richness, diversity, and evenness at three locations in Bogor and to analyze the association between buterfly community and the environmental characteristics at IPB University, Jendral Sudirman street, and K.H. Tubagus Muhammad Falak street, Bogor. Sample data were collected using the transect method and exploration method. There were 64 species from 5 families, consisting of 40 species on IPB University, 24 species on K.H. Tubagus Muhammad Falak street, and 19 species on Jendral Sudirman street. IPB University was found as the most suitable location that supports butterfly life cycle as their environmental characteristics are supported by their host plants, humidity, and leaf area index. The number, richness, and diversity of butterfly species will increase along with the increasing availability of host plants. Number of species will increase along as the humidity increases up to 85%.
Keyword: abiotic, bioindicator, biotic, butterfly, environmental characteristics

Judul: Sintesis dan Pencirian Natrium Titanat (Na2Ti2O4(OH)2) Berbahan Dasar Titanium Dioksida
Abstrak: TiO2 can be utilized as basic material for synthesis of sodium titanate (Na2Ti2O4(OH)2). This research was purposed to synthesize and characterize sodium titanate from TiO2 rutile powder as a basic material. Sodium titanate was synthesized by hydrothermal process at temperature 130 °C by mixing TiO2 rutile powder with 5 M and 10 M NaOH solution, then each was calcinated at temperature 700 °C. The energy dispersive X-ray analysis showed that sodium titanate has been successfully synthesized. This result was also supported by functional group analysis with Fourier transform infrared (FTIR) spectrofotometer showing the existence of Ti-O-Na vibration band at 989.42 cm-1. The formation of sodium titanate was depend on the reaction condition such as temperature, reaction time, and NaOH concentration. Scanning electron microscope image indicated that sodium titanate synthesized at 130 °C in 20 hours reaction time with 10 M NaOH had crystal size of 99.37 nm.
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