Judul: Keanekaragaman, Kelimpahan dan Distribusi Ikan di Waduk Cirata, Jawa Barat
Abstrak: Fish occupy various forms of aquatic ecosystems such as marine, brackish and freshwater. Around 43% from the total number of all fish species, occupying freshwater. Reservoir construction cause alteration of topography and hydrology of natural aquatic. Topographical altaration of relate to the diversity of species. Cirata Reservoir is the main reservoirs in Indonesia, formed from the damming of the Citarum River. The number of indigenous fish species in the Citarum river before damming more than 20 species. The study found 16 fish species, with nine indigenous species, are; Barbonymus balleroides, Rasbora argyrotaenia, Osteochilus vittatus, Mystacoleucus marginatus, Hampala macrolepidota, Hemibagrus nemurus, Mystus nigriceps, Oxyleotris marmorata, Parambasis siamensis, as well as seven non-indigenous species are; Cyprinus carpio, Oreochromis niloticus, Hemichromis elongatus, Amphilopus citrinellus, Chanos chanos, Colossoma macropomum, Hypostomus plecostomus. The indigenous fish species that not found in the previous study is Barbonymus gonionotus, Puntius binotatus, and Chana striata. The reduced number of individuals and species of indigenous fish species associated with be lost of food sources, cause altaration of habitat. Although, competition with the non-indigenous species benefit the same food. Highest number of individuals and species found in location 3, whereas the lowest number of individuals at location 4 and the number of species at location 5. O. niloticus has the highest relative abundance and distribution. Value of environmental factors still suitable for the fish life.
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Judul: Keanekaragaman Hayati Ikan Non Budidaya di Waduk Cirata Cianjur Jawa Barat
Abstrak: Construction of Cirata lake beginning work as Hydroelectric power, its potential great society exploited as Floating Cage Net however gradually Floating Cage Net not be felt by people around and switch caught fish outside floating cage net, increasing activity the exploitation in Cirata lake will impact of fish habitats who lived outside floating cage net. The aim of this research wasto observe fish diversity outside floating cage net with knowing the catch of fisherman and fish are caught and identify native fish species. The result showed most caught of fisherman is nila fish (Oreochromis niloticus) is 424 kg (68,1%) and the most fishing gear used by fisherman is gillnet. The value of index (H’), (E), and (C) consecutive is 1,28; 0,58; and 0,43. Based on the value of that index in waters Cirata Lake, fish who dominated in Cirata Lake is Nila Fish (Oreochromis niloticus).
Keyword: nila fish, Diversity, Cirata lake

Judul: Sintesis α-Fe2O3 menggunakan metode sol gel
Abstrak: In this reseach was succeeded make powder α-Fe2O3 with particle size 202.64 nm. Synthesis using Sol-Gel method with SiO2 coating derived from Si(OC2H5)4 at temperature of 750 oC for 5 hours. Characterization XRD prove that sample form is α-Fe2O3 (11 peaks) and β-Fe2O3 (2 peaks) with crystal size 20.69125 nm and crystallization 44 %. The cystal structure of α-Fe2O3 is rhombohedral and β-Fe2O3 is hexsagonal. Optic characterization show that the sample absorbing light at wavelength less than 480 nm. Bandgap energy of the optical characterization measurments is 2.74 eV.
Keyword: α-Fe2O3, annealing, bandgap energy, sol-gel, crystal structure.