Judul: Kajian Kondisi Terumbu Karang dan Komunitas Ikan Karang di Kawasan Konservasi Pulau Biawak dan sekitarnya, Kabupaten Indramayu Propinsi Jawa Barat
Abstrak: Marine Conservation area which is well protected will be ecologically gives positive impact on the abundance and biomass of target species and non-target fish in the area and the surrounding areas (Polunin et al. 1993). The declaration of Biawak Island and Surrounding Areas as a marine conservation area based on the Head of Indramayu District Government Decree number 556/Kep.528- Diskanla/2004 issued on April 7, 2004 on the establishment of Biawak Island and Surrounding Areas as a Marine Conservation Areas and Tourism, one of whose objectives is the protection of habitat and population, is expected to maintain the condition of ecosystems and provide a positive impact on marine resources both ecological, economic, and social. The purpose of this study was to examine the effect of the establishment those areas on coral reef and reef fish communities by studying condition percent cover of coral reef, reef fishes species diversity, abundance and fish biomass. Results showed that there are decrease number of coral reefs percent covers and the low biomass of fish in that the region.
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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: 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.