Judul: Evaluasi Pengelolaan Terumbu Karang di Kawasan Konservasi Laut Daerah Pulau Biawak dan Sekitarnya Kabupaten Indramayu Provinsi Jawa Barat.
Abstrak: The research was conducted in Marine Conservastion Area of Biawak Island of Indramayu, West Java Province. The Marine Conservastion Area is located in the Java Sea, northern part of the Indramayu District which familiar with high pressure from fishings, industries, and other human activities. The objective of the research were to assess condition of coral reefs, to assess role and importance of key stakeholders in the coral reef management and to evaluate current its management and recommend to better coral reef management in the area. I employed Line Intercept Transect, Visual Cencus Methods, Reef Check Benthos, Household interview and Expert interview to collect biophysical and socio-economic data. Coral reefs condition categorized as bad to medium condition with percent coral cover variated among 22,7±5,9% to 45,7±13,2%, 13 families and 39 genuses were found. The density of reef fishes were variated among 5.967±1.767 ind/ha to 20.433±10.355 ind/ha with 85 species and 18 families and the density of benthos were variated among 2.000±1.000 ind/ha to 14.667±14.964 with 29 species and 23 families. Result showed that anthropogenic activities gaves high pressure on coral reef condition. Destructive fishing still practiced around the protected area. Law enforcement, surveillance and monitoring actions were not implemented well. Government institution and private sectors need to be collaborated to create good coral reefs management. Collaboration among stakeholders became the key to successful MPA management. Implementation of management policy need to be focused on protect and conserve coral reefs to restore the condition.
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Judul: Pengelolaan Ekosistem Terumbu Karang di Daerah Perlindungan Laut di Pulau Kaledupa Kabupaten Wakatobi
Abstrak: The study concerned to analyze the management of coral reef ecosystems in Marine Protected Areas (MPAs) Kaledupa Wakatobi. The used analytical frame work of Institutional Analysis and Development (IAD), development institutional concerd IAD is used to analyze the performance and structure of the management institutional MPAs. This will be evaluated by ecological, social, and institutional (rules used). Ecological aspects represented by changes in life of coral cover on the date of and after the MPAs formed, the social aspect is represented by the condition of society and people's perceptions, institutional aspect will focus on rules that used in the institutional structure and performance. The results showed that the location of the general conditions study and life of coral cover have decreased in the early establishment by 35.5% -51.3% (medium-well) to 17.2% -39.9% (broken-being) after MPAs runs. The decline was caused by the activities of overfishing and the use of fishing tools that are not environmentally friendly. From the institutional aspect, still can’t protect the resources. This can be seen from the surveillance sistem which is weak, the punishment didn’t work properly, and so the rules haven’t fully accepted by society.
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Judul: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera