Judul: Dinamika Kandungan Klorofil dan LAI Tumbuhan Prunus avium dalam Ekosistem Karst Ciampea
Abstrak: Chlorophyll is the primary photosynthesis pigment of plants. The level of chlorophyll content of plant can be affected by external factors, such as light, temperature, and carbon dioxide. Karst is a unique topography that formed by water flow on carbonate rocks. One of the plant that can be found in the karst ecosystem was Prunus avium. Prunus avium is a major species of karst ecosystem. The purpose of this research was to determine the level of chlorophyll and leaf area index (LAI) in Prunus avium at the different influence of altitude and environmental factors. The level of chlorophyll was measured by SPAD Chlorophyll meter in each altitude on the same characteristic of Prunus tree. The results showed that the chlorophyll was inversely with altitude, LAI and environmental factors. The highest level of chlorophyll that found at 175 mdpl of altitude was 34.32 and the lowest 355 mdpl of altitude was 25.18. LAI showed the highest values 3.32 at 355 mdpl. Based on the statistical analysis, the environmental factors that affected the level of chlorophyll are light intensity, temperature, humidity and wind speed (p<0.05).
Keyword: Bogor Agricultural University (IPB), LAI, Prunus avium, karst, chlorophyll

Judul: Composition, Diversity, and Species  Richness of Understory Plants in the Seed Bank of the Ciampea Karst Ecosystem
Abstrak: Simpanan biji merupakan kumpulan cadangan biji yang terkubur di dalam tanah dan berpotensi mampu menggantikan tanaman dewasa. Tujuan penelitian ini mengidentifikasi dan membandingkan komposisi, keanekaragaman, dan kekayaan jenis tumbuhan bawah yang tumbuh dari simpanan biji di kawasan hutan dan bekas tambang ekosistem karst Ciampea. Penelitian ini dilakukan di dua lokasi yaitu kawasan hutan dan bekas tambang dengan membuat plot sebanyak 15 buah berukuran 25 cm x 25 cm dengan kedalaman 3-5 cm di kedua lokasi penelitian. Perkecambahan biji dilakukan di Rumah Kaca Biologi, IPB. Tumbuhan bawah hasil perkecambahan yang telah terindentifikasi terdiri dari 26 jenis yang berasal dari 14 suku. Keanekaragaman jenis tumbuhan bawah di kedua lokasi penelitian tergolong sedang. Jenis tumbuhan bawah yang mendominasi di kedua lokasi penelitian adalah Asplenium adiantum-nigrum L. dengan nilai INP berturut-turut 45,6% dan 64,81%. Kekayaan jenis dan kesamaan jenis tumbuhan bawah di kedua lokasi penelitian tergolong rendah. Perbandingan kesamaan jenis tumbuhan bawah pada simpanan biji dengan vegetasi permukaan pada kawasan bekas tambang relatif lebih tinggi dibandingkan pada kawasan hutan., The seed bank refers to a collection of buried seeds that have the potential to replace mature plants. The objective of this study are to identify and compare the composition, diversity, and species richness of understory plants growing from the seed bank in the forest and former mining areas of the Ciampea karst ecosystem. The research was conducted in two locations, the forest area and the former mining area, by establishing 15 plots measuring 25 cm × 25 cm with a depth of 3-5 cm in both research locations. Seed germination was carried out in the Biology Greenhouse, IPB. The identified understory plants resulting from seed germination consisted of 26 species belonging to 14 families. The species diversity of understory plants in both research locations is considered moderate. The dominant understory plant species in both research locations is Asplenium adiantum-nigrum L. with respective important value percentages of 45,6% and 64,81%. The species richness and similarity of understory plants in both research locations were relatively low. The comparison of species similarity between the seed bank and surface vegetation in the former mining area was relatively higher than in the forest area
Keyword: dominance, karst conservation, regeneration, seedling, vegetation analysis

Judul: Sistem giro mudharabah
Abstrak: Dewasa ini perkembangan syariah di Indonesia meningkat. Banyak perusahaan perbankan konvensional mendirikan Unit Usaha Syariah bahkan menjadi Bank Umum Syariah. Unit Usaha Syariah pun memerlukau sistem yang dapat mendukung kinerja usaha. Sistem ini dikenal dengan istilah sistem syariah. Sistem syariah dirancang dengan melakukan migrasi sistem terhadap sistem konvensional yang mendukung kinerja perbankan konvensional. Hal ini dilakukan karena dinilai efektif dan efisien dalam penggunaan sumber daya. Bank X yaug telah membuka Unit Usaha Syariah juga memerlukan sistem syariah untuk mendukung kinerja usahanya. Oleh karena itu proses migrasi pun dilakukan oleh bank X.
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