Judul: Spatial Distribution of Infiltration and Surface Runoff in Dramaga Campus of IPB University
Abstrak: IPB University Kampus Dramaga menempati lahan seluas 267 hektare, dengan tutupan yang dikategorikan ke dalam lahan terbangun, vegetasi, badan air. Seiring berjalannya waktu, pembangunan fisik kampus IPB University semakin meningkat. Dampak langsung pembangunan ini mempengaruhi siklus air, khususnya air hujan yang dapat meresap ke dalam tanah dalam bentuk infiltrasi. Peningkatan limpasan permukaan (surface runoff) merupakan salah satu konsekuensi dalam siklus air secara keseluruhan. Penelitian ini bertujuan untuk menganalisis dampak perubahan penggunaan lahan terhadap sebaran spasial infiltrasi dan limpasan permukaan dengan menggunakan metode skoring dan tumpang susun peta-peta tematik (overlay) didapatkan bahwa kapasitas infiltrasi di IPB University masih tergolong baik dengan luas lahan masuk kondisi baik sebesar 184,8 hektare atau 76,5% di tahun 2020 dan 181,1 hektare atau 75,2% di tahun 2022. Begitu pula limpasan permukaan yang umumnya masih dalam kategori normal dengan luas lahan sebesar 181,7 hektare atau 75,3% di tahun 2020 dan 179,7 hektare atau 74,5% di tahun 2022. Hasil penelitian ini diharapkan dapat digunakan untuk memberi masukan dalam pendugaan neraca air (water balance) kampus IPB University dan pengembangan Kampus, khususnya yang menyangkut tataruang secara keseluruhan.
Keyword: curah hujan, kemiringan lereng, overlay, penggunaan lahan, skoring

Judul: Rancangan Hidrolika Bangunan Pengendali Limpasan di Wilayah Kampus IPB Dramaga, Bogor
Abstrak: Bogor Agricultural University (IPB) stage III physical development is being implemented since 2011. Along with those development, the surface run-off was increased. The aim of these research were (1) to determine ECC-based on water balance, (2) to predict run-off (3) to do hydraulics design of runoff control structure. Based on water balance, environmental carrying capacity (ECC) was analysed, while run-off in IPB campus Dramaga was calculated by the rational method. Hydraulics design of run-off control structure was obtained by trial and error. The region can be divided into 14 catchment area (CA). The ratio of water availability and water demand was 0,9 hence the ECC of IPB Campus Dramaga was overshoot. Total discharge runoff to Campus IPB Dramaga was 5.66 m3/s. Discharge run-off in each CA was about 0.05 to 1.45 m3/s. Run-off control structure was needed to collect surfacerun-off hence increase water availability. Considering the topography and landuse, land and water conservation was needed in CA 4 and CA 9. CA 4 was suitable for reservoir which supported with sediment trap and drainage channel. CA 9 needed sediment trap for each inlet of Situ Leutik and bigger drainage holes along the side street.
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Judul: Mitochondrial DNA Gene Organization and Phylogenetic Relationship of Naja siamensis
Abstrak: Naja siamensis is one of Asiatic cobra in the Family of Elapidae, known as a cryptic snake. It has many morphological variations that lead to misidentification. Misidentification can cause the wrong concept in developing antivenom types due to high snakebite cases occur in Thailand. Thus, an accurate species identification using a molecular approach is crucially required. Mitochondrial DNA has been used widely in snake molecular studies. These studies were aimed to determine the arrangement of the N. siamensis partial mitochondrial genes using reptile-oriented primers and to reveal the phylogenetic relationship among other species of Asian cobra. DNA extraction was carried out based on the standard DNA salting-out protocol and was conducted by bioinformatics analysis using BLASTn and MEGA 6 software. Gene annotation was performed against N. kaouthia complete genome. A total of 3121 bp of N. siamensis mtDNA genes were sequenced consisting of partial of six regions: 16S rRNA, ND1, tRNA-Ile, CRII region, tRNA-Leu, tRNA-Gln, and COI genes. The mtDNA gene organization of N. siamensis was predicted to has a similar pattern with the common Elapidae mtDNA gene organization. This study showed that there is a monophyletic form in Naja genus and N. kaouthia is the closest species with N. siamensis based on partial 16S rRNA and ND1 gene.
Keyword: 16S rRNA, Elapidae, ND1, phylogenetic relationship