Judul: Distribusi spasial ikan karang dan hubungannya dengan terumbu karang (Kasus perairan pesisir Bahodopi, Teluk Tolo Kabupaten Morowali Provinsi Sulawesi Tengah)
Abstrak: Reef fish spatial distribution and their assemblages in coral reefs were studied in Bahodopi coastal waters in Tolo Gulf. A total of 2849 individuals from 66 species and 17 families were recorded in 10 stations in the study area covering reef flat and reef slope. Totally 1367 individuals were recorded in the reef flat and 1482 individuals in reef slope stations. Among the three fish groups living in the coral reefs, there found that the most abundant fish were Major and Target fish groups consisting family of Pomacentridae, Acanthuridae, Labridae and Serranidae. Community structure analyses showed that diversity (H’) and Evennes (E) indexes were significantly high according to the categories. The ranges of the two index were 3,61 – 3,69 and 0,82 – 0,93 respectively. Spatial distribution of reef fish in the species level was not significant, but in the level of species groups, the spatial distributions were better. Mayor and target reef fish play an important role in the study area.
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Judul: Linkage Between Reef Fish with Benthic Cover Community at Tunda Island Waters, Banten Bay
Abstrak: Ekosistem terumbu karang merupakan ekosistem yang kompleks yang berperan penting sebagai habitat untuk ikan-ikan kecil, serta sumber mata pencaharian bagi masyarakat pesisir dan pulau-pulau kecil. Ikan terumbu adalah salah satu biota yang hidup di ekosistem terumbu karang dan sangat bergantung pada kondisi terumbu karang. Berdasarkan Perda Kabupaten Serang No. 2 Tahun 2013 tentang Rencana Zonasi Wilayah Pesisir dan Pulau-Pulau Kecil (RZWP3K) Pulau Tunda termasuk dalam pulau yang menjadi bagian dari program pengembangan wisata. Penelitian ini bertujuan untuk mengkaji struktur komunitas ikan terumbu dan kelimpahannya serta keterkaitan ikan terumbu dengan pertumbuhan karang keras di perairan Pulau Tunda, Teluk Banten. Pengambilan data ikan dilakukan dengan metode Underwater Visual Cencus dan pengambilan data terumbu karang menggunakan metode Underwater Photo Transect. Ditemukan sebanyak 13 bentuk pertumbuhan karang keras. Ditemukan total 20 famili, 41 genus, dan 91 spesies dengan total kelimpahan ikan sebesar 124,583±98,25 ind/250m2 individu ikan. Ditemukan total lima trofik ikan yaitu planktivora, omnivora, koralivora, karnivora, dan herbivora. Analisis koresponden (CA) menunjukkan informasi sebesar 61,4 % pada dim 1 dan 24,52% pada dim 2. Ditemukan keterkaitan antara famili ikan karang dengan bentuk pertumbuhan karang keras antara lain famili ikan kecil seperti Pomacentridae, Apogonidae, Holocentridae, Bleenidae, Pinguipedidae, Chaetodontidae, Zanclidae, Pomacanthidae, dan Labridae memiliki keterkaitan dengan karang dengan bentuk pertumbuhan bercabang, Muraenidae memiliki keterkaitan dengan bentuk komunitas bentik yang memiliki celah pada terumbu, serta ikan herbivora dan perenang cepat seperti Acanthuridae dan Scaridae berkaitan dengan bentuk pertumbuhan karang bongkahan besar., Coral reef ecosystem is a complex ecosystem that play an important role as habitat for juvenile fish, also as source of livelihood for coastal and archipelago people. Reef fish is one of biota that live in coral reef ecosystem and also really depend on coral reef condition. Based on Regional Law of Serang Regency No. 2 Year 2013 of Zoning Plan for Coastal Areas and Small Islands (RZWP3K), Tunda island include as island that be a part of tourism development program. The purpose of this study is to study the community structure of reef fish and its abundance also the linkage between reef fish and hardcoral lifeform at Tunda Islands water, Banten strait. Reef fish data retrievel used Underwater Visual Cencus method and coral reef data retrieval used Underwater Photo Transect. 13 hard coral were found. Found total 20 family, 41 genus, and 91 species with average total abundance 124,583±98,25 ind/250m2 individual fish. Found total five trophic level of fish such as planktivore, omnivore, coralivore, carnivore, and herbivore. Correspondent Analysis (CA) result provide information about 61,4% at dim 1 and 24,52% at dim 2. Found linkage between reef fish family with coral reef lifeform such as small fish family such as Pomacentridae, Apogonidae, Holocentridae, Bleenidae, Pinguipedidae, Chaetodontidae, Zancliidae, Pomacanthidae, and Labridae have linkage with branching coral lifeform, Muraenidae have linkage with benthic community that have gap in the reef area, and herbivore and fast swimmer fish such as Acanthuridae and Scaridae have have ingkage with boulder lifeform
Keyword: Ekosistem, Kelimpahan, Tutupan

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4