To select a rehabilitation area of coral reefs in Pahat Island within Anambas Islands, this study was conducted to asses coral reefs condition using diver-towed or manta tow surveys and underwater photo transects (UPT). The results of the manta tow surveys showed coral cover dominated by hard corals percentage ranged between 11% and 50% (categories 2 and 3) in the western, northern and southern parts of Pahat Island. Distribution of hard coral percentage with more than 50% (Category 4: 51% - 75% and 5: 76% -100%) was observed in the eastern part of Pahat Island. While results from UPT showed the hard coral percentage of 62.5%, 33.67% and 17% in the eastern, western and northern of Pahat Island, respectively. There are similarities in the results of coral reef cover Obtained by the manta tow and UPT methods. Conclusions, this study recommends western Pahat Island as a good alternative for a rehabilitation site as the coral coverage was in poor condition.

CCMRS-IPB conducted coral reef rehabilitation at damaged coral reefs around Nyamuk Island. Those artificial reef buildings for rehabilitation gave shelter spaces for reef fish. This research aims to calculate the effect of coral reef-building, which enhances rugosity to the reef fish diversity around the rehabilitation sites. The study was conducted on Nyamuk Island in the Anambas Islands. Reef fish were sampled annually from 2014 to 2019 using the underwater visual census. The Diversity index and non-Metric Multidimensional Scaling were built to discover reef fish diversity, and reef fish species were affected the most. Yearly data shows an escalation number of reef fish abundance and richness at the end of 2019. The major reef fish group is found to have constant diversity throughout the year compared to other functional groups. The target reef fish group came to this rehabilitation ecosystem primarily attracted by nourishment availability. There is a shift in the reef fish diversity from the early year to the project end. Generally, major reef fish groups will be refuged first around the rehabilitation sites, especially territorial types. Target fish groups from herbivorous and carnivorous types will mostly come along after their food availability and location to get around.

Most of the people who live in coastal villages are fishermen and are very dependent on marine resources and coastal ecosystems. The purpose of this study was to determine the socio-economic conditions of coastal communities that exploit the potential of the coast in Batui District, Banggai District. This research was conducted in the coastal area of Batui District, Central Sulawesi Province. Data were collected by means of surveys and interviews. The data analysis was done qualitatively and descriptively. The social conditions of the coastal communities in Batui District mostly live on the coast with less dense population density. The aspect of education shows that the average coastal community with a Bachelor degree is 40% with the human development index (HDI) in the medium category. It is seen from the economic condition that the livelihoods of the coastal communities in Batui District are dependent on the fishery sector, namely partly as fishermen. The fishing gear and fishing fleet used for fisheries in the research location are small-scale fisheries. Keywords coastal communities, small-cale fisherie, capture fisheries and Batui District

The coral growth rate is affected by several ecological conditions, which could lead to enhancement or deceleration. Good marine habitat and water conditions would escalate coral fragment growth rate on rehabilitation sites. This study was assessed to determine the coral growth rate transplanted on artificial reef-building for rehabilitation purposes and indicated the main driving factors that enhance coral growth rate at Nyamuk Island, Anambas. Benthic communities, coral length, and coral growth rate compared through the year. Analysis of variances and Principal component analysis (PCA) was conducted to indicated differences between variables and analyse driving factors of coral growth rate. Hard coral and sand coverage increasing during observation. Coral length based indicated constant escalation. However, coral growth yearly showed fluctuation with peak growth from 2014 to 2015. PCA exhibited hard coral, dead coral with algae, sponge, and sand played an important role in supporting coral growth on rehabilitation at Anambas. Available niche for other marine faunas built by artificial reef-building could support to preserve of the coral fragments. Acquisitions of hard coral by coral fragments could be supported by good natural hard coral coverage in the habitat. Herbivorous is one factor that could support recent coral reefs.

Penelitian ini bertujuan untuk mengembangkan metode indeks kepekaan lingkungan ekosistem mangrove terhadap tumpahan minyak dengan studi kasus di daerah pesisir Subang Jawa Barat. Data yang digunakan adalah data primer (data jenis mangrove, tipe substrat dan data sosial ekonomi) dan data sekunder (karakterisitik pantai dan hidrooseanografi). Data tersebut kemudian digunakan sebagai parameter dalam Indeks Kepekaan Lingkungan (IKL). Indeks kepekaan lingkungan terdiri dari tiga indeks yaitu indeks kerentanan (IK), indeks ekologi (IE), dan indeks sosial ekonomi (IS). Parameter IK terdiri dari kemiringan pantai, rentang pasang surut, tinggi gelombang, tipe substrat dan jarak ekosistem mangrove dari pantai. Parameter IE terdiri dari zonasi mangrove, kepadatan mangrove, keragaman mangrove, keberadaan hewan dilindungi dan status perlindungan ekosistem mangrove. Parameter IS terdiri dari dua kompoen yaitu komponen sosial dan komponen ekonomi dari ekosistem mangrove. Formula IKL yang digunakan adalah IKL = IK(0,3) + IE(0,3) + IS(0,4) dan terbagi kedalam 5 tingkatan kepekaan.  Kajian IKL di daerah penelitian menunjukkan sebagian besar daerah memiliki tingkat kepekaan yang “sedang” terhadap tumpahan minyak kecuali Tegal  Tike, Anggaranu dan Tanjung yang memiliki tingkat kepekaan “peka”.