Judul: Distribusi spasial dan pengelolaan lamun (Seagrass) di Teluk Bakau, Kepulauan Riau
Abstrak: Seagrass beds as ecosystem in the coastal areas will continue to experience change by various reasons, so that research on the spatial distribution of seagrasses also be done. Data and information obtained not only for science but also for the management of resources. The study was conducted approximately 2 weeks in August 2010 using a combination of the usual method on coral reef that is, "Line Intercept Transect " and"Stop and Go". During the study found 10 of 13 species of seagrass and its spread from the coast towards the edge of generally continuous. This causes no seagrass was found living in the area monospesifik and not undergo significant ecological disturbance. Characteristics of habitats, community structure, threats and seagrass management plan involved are discussed.
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Judul: Studi Konektivitas Sistem Sosial-Ekologi Lamun dan Perikanan Skala Kecil (Studi Kasus: Kabupaten Bintan, Kepulauan Riau).
Abstrak: Seagrass ecosystem is one of important parts as a constituent of the coastal ecosystem along with mangroves and coral reefs. Seagrass ecosystem services are very various, for exampel as provisioning services, supporting services, regulating services, and cultural services. The utilization of the seagrass in small-scale fisheries is the interaction between the two systems, namely social systems and ecological systems, or it is commonly referred to as social-ecological systems (SES). Understanding the behavior of small-scale fishermen and connectivity patterns of seagrass in the form of direct use as provisioning services of many fisheries resources contributes to the comply the needs of fishermen. Therefore, it is necessary to examine the study on social-ecological system connectivities of seagrass in small-scale fisheries for integrated seagrass management particularly in Bintan regency, Riau Islands. The purpose of this research was to map the social-ecological system connectivities seagrass with small-scale fisheries in a networks perspective the study site, identify social-ecological connectivities of seagrass approach avability of fisheries resources on small-scale fisheries un the study site, and estimate the great benefits of fisheries resources relation to seagrass services in the study site. This study was conducted from 22 September to 22 November 2014 in Malang Rapat and Berakit Villages, Bintan regency, Riau Islands. This research was conducted with qualitative and quantitative approaches. Respondents selected were appointed permanently as much as 15 respondents of fishermen of each village. The data needed were primary and secondary data. The analysis of the network map and distribution of the fishing was done with the program of Geographical Information Systems (GIS) from the results of delineation and interviews. The data of fish caught by fishermen were obtained from the interviews with quisioner instrument and the recorded of catches and sales by the seller, then analyzed fish spesies composition, community structure and descriptive statistics, while ensure type of fisheries resources exploited used the approach of installing Trammel Net and Gill Net. Fishermen income data were obtained from the results of in-depth interviews with questionnaire instrument. The data were then analyzed with an approach of production value, whereas the public perception was analyzed by the frequency distribution. The collection of secondary data was obtained from the study of literature and sources of structural village, district, county, and institutions associated with the research. The results of studies indicated that some fishermen in the village of Berakit and Malang Rapat had taken the advantage of the presence of seagrass in the fulfillment of their needs. The used fishing gear for seagrass in the village included nets, fishing rods, crab traps, and the tidal trap (kelong karang). The connectivity of social-ecological systems of seagrass was very strong with the spatial distribution of fishing areas, network map market, and dynamic of smallscale fishery catches in the study area of the fishery resources in the presence of seagrass ecosystem services. The network map market of the fishery catches was that they were sold to the traders in the village collectors, and then distributed to the merchant collectors in the city. There were a few fishermen from the Berakit village distributing the catches
Keyword: Seagrass ecosystem, connectivity, network map, small-scale fisheries, social-ecological system (SES)

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