Judul: Perencanaan Sumur Resapan untuk Konservasi Air Tanah dan Pengurangan Limpasan di Perumahan Dramaga Cantik 2 Bogor.
Abstrak: Pengembangan permukiman di perkotaan yang meningkat, mengakibatkan semakin berkurangnya area resapan hujan. Meningkatnya luas daerah yang terbangun menyebabkan meningkatnya limpasan sehingga melampaui kapasitas saluran drainase. Penelitian ini bertujuan untuk merencanakan dimensi sumur resapan dan menghitung efektivitas sumur resapan dalam mengurangi limpasan. Pembangunan sumur resapan ini merupakan upaya memperbesar resapan air hujan ke dalam tanah dan memperkecil limpasan yang merupakan penyebab banjir. Penelitian ini dilakukan di perumahan Dramaga Cantik 2, Kecamatan Dramaga, Kabupaten Bogor. Nilai curah hujan rencana yang diperoleh sebesar 126,05 mm/hari dan laju infiltrasi tanah sebesar 12,4 cm/jam. Dimensi sumur resapan yang direncanakan memiliki diameter 1,4 m dengan kedalaman 2,3 m dan akan dibuat 206 sumur resapan di Perumahan Dramaga Cantik 2 Bogor. Pembangunan sumur resapan dapat mengurangi 56% limpasan yang terjadi.
Keyword: flooding, groundwater, infiltration, infiltration wells, precipitation

Judul: Perencanaan Sumur Resapan di Kawasan Pemukiman Perkotaan
Abstrak: Pertumbuhan penduduk yang pesat di Kota Bogor menyebabkan tata guna lahan banyak yang berubah menjadi lahan terbangun, sehingga meningkatkan limpasan dan mengurangi pengisian air tanah. Penelitian ini bertujuan merencanakan sumur resapan berbasis daya dukung sumber daya air di kawasan pemukiman daerah perkotaan. Telah dapat dilakukan penapisan lokasi prioritas sumur resapan berdasarkan kriteria topografi, tutupan lahan, dan aliran sungai. Lokasi prioritas tersebut yaitu di Kecamatan Bogor Selatan dengan DTA Cikaret, Cipakancilan, Cipinang Gading, dan Cisadane. Status DDL-air keempat DTA termasuk kategori “terlampaui” (overshoot). Hasil analisis neraca air menunjukkan surplus neraca air sebesar 1.272,3 mm/tahun dengan persentase limpasan yang relatif besar yaitu 75,7%-95%. Debit limpasan maksimum berkisar antara 31,3 m3/detik s/d 163,7 m3/detik. Telah dapat didesain sumur resapan individu dengan tiga tipe menurut luas atapnya, dengan kedalaman yang seragam 3 m, dan jari - jari 0,4 m-0,6 m. Dengan menggunakan skenario luas atap per pemukiman 10%-40% efektivitas sumur resapan individu diperkirakan berkisar antara 5,4%-39,9%. Total sumur yang diperlukan untuk empat DTA sejumlah 1.450 unit-43.073 unit. Sumur resapan komunal direncanakan terintegrasi dengan saluran drainase jalan lokal, kolektor, dan arteri. Perlu dilakukan penelitian lebih lanjut untuk mengkaji kelayakan dan akseptabilitas masyarakat terhadap pembangunan sumur resapan., The rapid growth in Bogor City has caused a lot of land use to be turned into built-up land, thereby increasing runoff and reducing groundwater recharge. This study aims to plan infiltration wells based on the carrying capacity of water resources (DDL-water) in urban residential areas. It have been done to filter the priority location of infiltration wells based on topography, land cover, and river flow criteria. The priority location are in South Bogor District with Cikaret, Cipakancilan, Cipinang Gading, and Cisadane catchment areas. The DDL-water status of the four catchment areas is in the “overshoot” category. Water balance analysis show an air balance surplus of 1.272,3 mm/year with a relatively large proportion of runoff, which is 75,7%-95%. The maximum runoff discharge ranges from 31,3 m3/s to 163,7 m3/s. It have been done to design individual infiltration wells with three types according to the roof area, with a uniform depth of 3 m, and a radius of 0,4 m-0,6 m. By using the scenario of roof area per settlement 10%-40%, the effectiveness of individual infiltration wells ranges from 5,4%-39,9%. The total wells required for the four catchment areas are 1.450 units-43.073 units. Communal infiltration wells are planned to be integrated with local, collectors, and arteries street drainage channels. Further study is needed to asses the feasibility and acceptability from society of the infiltration well development.
Keyword: DTA, limpasan, sumur resapan, Catchment areas, infiltration well, runoff

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