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: Rancang bangun model pengelolaan waduk berkelanjutan berbasis perikanan budidaya karamba jaring apung (kasus waduk Cirata Jawa Barat)
Abstrak: The research of the sustainable management model’s design of Reservoir Fisheries floating cage (Reservoir Case Cirata, West Java) aims to calculate the carrying capacity, make its institutional model, build dynamic system model and assess the sustainability of the reservoir management of floating cage based aquaculture in Cirata Reservoir. The calculation of the pollution load and capacity of assimilation is used to calculate its carrying capacity and Interpretative Structural Modeling (ISM) is used to create institutional. Furthermore, Powersim software is used to create dynamic models and Rapfish used to assess the status of sustainability in the management of Cirata Reservoir. This study shows the status of water quality in Cirata reservoir has been low into high polluted (based on water quality classification class B PP 82-year-2001), the carrying capacity of the reservoir parameters in Cirata based on TSS, BOD, COD, PO4, NO3, NO2, Fe, Cd, Zn, and Mn parameter have passed the threshold of the standard quality of water in the river. The ideal reservoir management involves the central government (Ministry of Forestry), Cirata Reservoir Management Agency, Department of Fisheries and Marine West Java Province and the Ministry of Fisheries and Marine. The population growth is the factor of problem in the utilization of Cirata Reservoir. The problem follows the basic pattern of boundary dynamic model for success, tragedy of the common and shifting of the burden, with the dominant building block is reinforcing. The increased activity of the population (KJA, industry, agriculture, livestock, forest encroachment) increased sedimentation and pollution balance the functions of ecological, economic and socio-cultural. Ecology aspect is the weakest aspect in the sustainable management of Cirata Reservoir. Socio-cultural aspect is the dominant aspect as a major capital in the intervention of four other aspects. (economic, legal-institutional, technology / infrastructure and ecology).
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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.