Judul: Makanan Ikan Totot Johnius belangerii (Cuvier 1830) Di Delta Cimanuk Pabean Ilir Pasekan, Indramayu, Jawa Barat
Abstrak: Food could determines the survival, growth, and reproduction of fish. The purpose this study was to know the food type of belanger’s croaker in Delta Cimanuk Pabean Ilir Pasekan, Indramayu, West Java. This study were conducted on Maret-Mei 2014. Total samples analysed were 214 individuals. The stomach content was analyzed using index of preponderance (IP). The result of study showed that belanger’s croaker was carnivora with main food crustacean Acetes sp. as where small fish was more specialist the big fish. The opportunity a intraspesifik competition of croaeker belanger’s in food utilization occured between 92-115 mm and 116-139 mm for female fish, and between 68-91 mm and 92-115 mm and between 92-115 mm and 164-187 mm for male fish. The female fish was more diverse than the male fish in food utilization. Belanger’s croaker actively foraging during the day and actively foraging in water bodies near bottom waters.
Keyword: Bogor Agricultural University (IPB), Food., Delta Cimanuk, Belanger’s croaker

Judul: Makanan Ikan Lundu (Arius maculatus Thunberg, 1792) di Delta Cimanuk Pabean Ilir, Pasekan, Indramayu
Abstrak: Penelitian ini bertujuan untuk mengkaji beberapa aspek makanan (makanan utama, kategori ikan berdasarkan makanannya, aktivitas makan, tingkat pemanfaatan sumber daya makanan, dan tingkat persaingan dalam memanfaatkan sumber daya makanan) ikan lundu di perairan Delta Cimanuk Indramayu, Jawa Barat. Ikan yang diamati berjumlah 104 ekor dengan ukuran berkisar antara 125 mm dan 292 mm. Metode analisis yang digunakan adalah Index of Preponderance. Hasil penelitian menunjukkan bahwa ikan lundu termasuk ikan omnivora yang cenderung karnivora, dengan makanan utamanya adalah Krustasea (untuk ukuran kecil) dan Pelecypoda (untuk ukuran besar). Aktivitas makan tertinggi selama pengamatan terjadi pada bulan Maret. Ikan lundu bersifat selektif dalam memilih makanan. Tingkat kompetisi tertinggi dalam mendapatkan makanan pada ikan lundu jantan terjadi antara kelas ukuran 146-166 mm dengan 188-208 mm, sementara pada ikan lundu betina pada kelas ukuran 188–208 mm dengan 209–229 mm., The purpose of this research was to assess some food aspects (the main food, food category, feeding activity, the level of food resources utilization, and the competition level over food resources utilization) of spotted catfish in Delta Cimanuk Waters Indramayu, West Java. The observed fish were 104 individu in amount with length ranged between 125 mm until 292 mm. the methods of analysis was Index of Preponderance. The result showed that spotted catfish was omnivores tend to carnivores with the main food was Crustacea (small size) and Pelecypoda (big size). The highest feeding activity during observation occurs on March. Spotted catfish was selective feeding. The highest competition on male spotted catfish occurs in size class 146-166 mm with size class 188-208 mm, while on female spotted catfish, it occurs in size class 188-208 mm with size class 209- 229 mm.
Keyword: Arius maculatus, Delta Cimanuk, makanan

Judul: Utilization of terra/MODIS L1B data for analysis of horizontal wind profile in the troposphere
Abstrak: This study was concerned with horizontal wind derived from data collected with the Moderate-resolution Imaging Spectroradiometer (MODIS) on board the NASA’s Earth Observation System (EOS)-Terra satellite. The aim of this study is to develop a method for the estimation of horizontal wind movement in the troposphere based on Navier-Stokes equation. The method was applied to a calibrated and geolocated Terra/MODIS L1B 1 km data set. The data inputs to estimate surface temperature are retrieved from TIR (Thermal Infrared) bands 31 (10.780 μm to 11.280 μm) and 32 (11.770 μm to 12.270 μm). The obtained surface temperatures were later used to approximate geopotential height on a constant-pressure surface by using the modified Poisson equation. The main assumptions used are the hydrostatic equilibrium, ideal gas law, constant lapse rate and constant acceleration of gravity. Based on the distribution of geopotential height, the pressure gradient force is measured by the gradient of geopotential on an isobaric coordinate to present the horizontal wind profile. For certain topographic areas especially in the mountain ranges, there was a disadvantage of using pressure as a vertical coordinate which lead to inaccuracy. In spite of that, Terra/MODIS L1B data with 1 km spatial resolution can be used to estimate the horizontal wind movement in the troposphere.
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