Judul: Analisis Debit Puncak Aliran Sungai Ciliwung pada Outlet Katulampa
Abstrak: Cilmate and land use changes were increase fluctuation river discharge of Upper Ciliwung Watershed. Increasing river discharge in rainy season often cause flood in lower area, especially in DKI Jakarta Province. This research aims to analyze the characteristics of rainfall, the relation between rainfall and rainfall intensity on peak discharge, and the effect of land use changes on peak discharge in Upper Ciliwung Watershed. Characteristics of rainfall were analyzed by daily rainfall charts (Citeko Station) and daily rainfall data (Katulampa Station) 2007- 2013, while landuse changes were identified from land use map on 2006, 2009, and 2012. Rainfall (daily, monthly, yearly) on the Upper Ciliwung Watershed is lower than rainfall in the outlet area. The amount of daily rainfall has astrongly relation with peak discharge. The amount of daily rainfall in the upper (Citeko Station) has stronger relation with peak discharge of Ciliwung River than the amount of daily rainfall in the outlet area (Katulampa Station),with determination coefficient (R2) on 2011, 2012 and 2013 are 0.56, 0.65, and 0.42respectively. The amount of daily rainfall in the upper (Citeko Station) has also stronger relation with peak discharge of Ciliwung River than rainfall intensity 30 minutes. But, the amount of daily rainfall and rainfall intensity30 minutes have a real influence on peak discharge of Ciliwung River. The greatest land use change was happened on 2006-2009, which residential area increased about 463.39 ha (3.09%). This land use change was causepeak discharge of Ciliwung about 394.81 m3/s, which occurred on February 2010. This peak discharge was cause widespread flood in DKI Jakarta Province.
Keyword: Bogor Agricultural University (IPB), peak discharge, rainfall intensity 30 minutes, rainfall, landuse changes

Judul: Analisis Debit Puncak dan Aliran Permukaan DAS Ciliwung Hulu pada Bulan Januari 2014 (Studi Kasus: Bendung Katulampa)
Abstrak: Upper Cilliwung Watershed closely related to Jakarta flooding event. Water level in Katulampa dam reached 230 cm equal to discharge of 552 m3/second on 29 January 2014. It presumably because of countinuous rainfall all day with the intensity from low to high. The rain that continuously fell for few days caused the soil saturated so that the number of surface flow significant increased. The relation between the rainfalls in three observation stations which are Citeko, Gunung Mas, and Katulampa as well as average rainfalls and the discharge on Katulampa dam showed a correlation values of 0.87, 0.87, 0.83, and 0.87 respectively. It explains that rainfalls on three observation stations as well as average rainfalls affects the water level on Katulampa dam. The higher the rainfall in Upper Ciliwung Watershed, the higher the water level on Katulampa dam will be. The coefficient value of the surface flow on 12, 17, 21, and 29 of January 2014 are 20.7 %, 32.8 %, 37.7 %, and 33.8 % respectively.
Keyword: Bogor Agricultural University (IPB), Upper Ciliwung Watershed., rainfalls, runoff coefficient, Katulampa dam

Judul: Pengamatan Parasitoid Telur Scelio sp. (Hymenoptera: ...Scelionidae) pada Telur Oxya japonica Thunberg (Orthop--...tera:.Acrididae)
Abstrak: Oxya japonica adalah serangga hama yang bersifat polifag karena memiliki banyak kisaran inang. O. japonica termasuk serangga yang mudah berkembang dan hama ini sangat penting dan dapat merugikan sehingga perlu dilakukan alternatif pengendalian seperti pengendalian biologi. Musuh alami O. japonica yang banyak ditemukan adalah parasitoid telur Scelio sp. dari famili Scelionidae. Penelitian ini bertujuan untuk mempelajari beberapa aspek perkembangan parasitoid dan perilaku peletakan telur Scelio sp. pada telur O. japonica. Telur O. japonica dikumpulkan dari lapangan dan dilakukan pemeliharaan di laboratorium. Parasitoid diamati dan ditunggu hingga keluar dan meninggalkan inangnya. Telur Scelio sp. memiliki lebar 0.11 mm dan panjang 0.88 mm dengan tipe telur stalked. Larva instar awal memiliki lebar 0.21 mm dan panjang 0.67 mm dengan tipe larva teleaform dan memiliki mandibel pada bagian kepala. Larva instar akhir Scelio sp. bertipe hymenopteriform dengan lebar 1.18 mm dan panjang 2.82 mm. Lama perkembangan Scelio sp. dari telur hingga imago masing-masing 28.00 hari pada jantan dan 28.40 hari pada betina. Lama hidup imago jantan rata-rata 4.10 hari dan betina 5.10 hari. Telur Scelio sp. diletakkan ke dalam telur inang dengan menggunakan ovipositornya dan sebelum telur diletakkan, Scelio sp. masuk ke dalam lubang peneluran O. japonica dengan didahului masuknya abdomen.
Keyword: biologi, Oxya japonica, parasitoid, Scelio sp, Scelionidae