Judul: Kajian Status Trofik Dan Daya Dukung Perairan bagi Kegiatan Karamba Jaring Apung Di Waduk Saguling Jawa Barat
Abstrak: Saguling Reservoir as multipurpose reservoir have many problem, one of that is organic matter loading with two sources. Internal source of organic matter loading is floating cage aquaculture. The Purpose of this study was to estimate status trophic and carrying capacity for floating cage aquaculture in Waduk Saguling. Most of floating cage cultivated cat fish (Pangasius sp) with artifical feed which contain 1,19% of phospat. Several of water quality parameter exceed quality standar, that means there has been contamination of organic material in the Saguling reservoir. Dissolved Oxygen content can reached lower than 1 mg/l on inlet reservoir, dissolved oxygen content can not support the growth of aquatic organisms in maximal condition. Based of trophic classification using TRIX method, the productivity of the Saguling Reservoir has reached eutrophic level. Estimating water carrying capacity use phosporus budget model was found that total acceptable production to be 12.460 tons/year. Keywords : Trophic Status, Carrying Capacity, Saguling Reservoir, Floating Cage Aquaculture Based on interview data, fish production in Saguling is 2,76 tons / year / cage. The result is show that amount of cage which safe for water is 4514 cage units. Current Amount of active floating cage is 7209 units. This amount of present floating cage has exceed the maximum value of carrying capacity so that need to effective policy to manage floating cage activity.
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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: Prenilasi Senyawa β-Diketon sebagai Prekursor 3-Prenilflavon
Abstrak: One group of flavonoids that has not been commonly synthesized is 3- prenylflavone. The main objective of this experiment was to synthesize precursor of 3-prenylflavone. Firstly, β-diketone was synthesized via 4 steps from phenol as starting compound with total yield of 24%. Prenylation of β-diketone with prenyl bromide and K2CO3 base produced 4 fractions which were separated by using preparative thin layer chromatography (PTLC) with n-hexane:EtOAc (8:2) as the eluent. Fraction with Rf = 0.80 was further separated by using preparative PTLC with n-hexane:EtOAc (99:1) as the eluent. Two fractions were obtained with Rf = 0.38 and 0.42. The first fraction has been characterized as diprenylated β-diketone with 49% yield. Application of protecting group on the phenolic OH group in β- diketone are needed to obtain monoprenylated β-diketone which can be further cyclized into 3-prenylflavone
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