Judul: Perbedaan Keanekaragaman dan Kerapatan Jenis Dekapoda Pada Karang Mati Antara Pocillopora verrucosa dan Seriatopora histrix Di Pulau Pari, Kepulauan Seribu, DKI Jakarta
Abstrak: Dead coral has a large proportion of the substrate on coral reefs where gaps or spaces found on the dead coral can be utilized by a wide range of associated organisms as a place to live. However, study on the function of the dead corals is lack. This research aimed to know the difference between diversity and density of species of decapode in the dead coral Pocillopora verrucosa and Seriatopora histrix. A total of 235 Pocillopora verrucosa individuals consisting of 7 families, 11 genera and 35 species was observed. While in Seriatopora histrix, a total of 74 individuals consisting of 5 families, 6 genera and 11 species was recorded. The diversity index of dekapode biota on dead coral Pocillopora verrucosa was categorised as medium, while on Seriatopora histrix was categorized as low diversity. Uniformity index value in both types of dead coral was relatively steady. Index of domination of both dead corals explained that almost no individual dominating. The spesies density on Pocillopora verucosa was 25 ± 11.34 ind/l, while on Seriatopora histrix was 8 ±1.9 ind/l. This is explain the complexity of gaps or space on the dead coral seem potentially inhabited by more organisms.
Keyword: dead coral, decapod, species density, diversity

Judul: Ecology and Distribution of Coral Disease on Hard Coral (Scleractinia) in Pari Island, Thousand Islands, Jakarta
Abstrak: Penyakit karang diketahui sebagai salah satu ancaman yang dapat menyebabkan kerusakan ekosistem karang, namun masih sedikit diketahui di perairan Indonesia, termasuk di Pulau Pari, Kepulauan Seribu. Dalam beberapa dekade terakhir terumbu karang di Gugusan Pulau Pari dilaporkan telah mengalami degradasi sebagai akibat dari aktivitas antropogenik dan juga faktor alami pada daerah ini.Tujuan penelitian ini adalah untuk mengetahui kelimpahan penyakit karang, keanekaragaman karang scleractinian dan juga untuk menentukan perkembangan, prevalensi dan insiden penyakit karang (i.e. Black band disease, BBD) di Gugusan Pulau Pari, Kepulauan Seribu. Pengambilan data kualitas perairan pada masing-masing stasiun dilakukan mengikuti lokasi pengambilan data tutupan dan penyakit karang., Coral diseases have been recognized as a threat that cause the degradation of coral scleractinia which is still slightly recorded in Indonesia, including in Pari Island, Thousand Islands. In last few decades Coral reefs in Pari Islands were recorded have been degraded due to natural impact and anthropogenic activity in this area. The study objective was to find out abundance of coral disease and coral scleractinia diversity and also to determine progression, prevalence and incidence coral disease (i.e. Black band disease, BBD) in Pari Islands, Thousand Islands.
Keyword: Coral, Disease, Abundance, Diversity, Prevalence, Insidence, Pari island, Marine science

Judul: Sintesis Flavon dari Fenol dan Benzoil Klorida
Abstrak: Flavone is a class of flavonoid, commonly found in plants with wide bioactivity spectrum. A widely used flavone synthesis route is through acidcatalyzed oxidative cyclization of β-diketone. In this study, unsubstituted flavone had been synthesized via 5-step from phenol, with 22% yield and successfully increased the yield of previous study on Fries rearrangement of phenyl acetate and benzoylation of o-HAP steps. Phenol was acetylated resulting 93% phenyl acetate. AlCl3-catalyzed Fries rearrangement in 1.5 hour and at 120 °C converted phenyl acetate into o-hydroxyacetophenone (o-HAP) with 40% yield. AlCl3 as catalyst produced o-HAP with higher and reproducible yield compared with BF3·Et2O and ZnCl2. Benzoylation of o-HAP followed by Baker-Venkataraman rearrangement of the ester product using KOH in dried pyridine produced β-diketone 1-(2- hydroxyphenyl)-3-phenylpropane-1,3-dione. The yield of ester and β-diketone were 71% and 85%, respectively. Finally, oxidative cyclization of β-diketone with sulphuric acid as catalyst produced 99% of flavone. The flavone product had been characterized spectroscopically and its melting point as well.
Keyword: