Giant clams are harvested by coastal communities around Savu Sea for food. As one of the important inhabitants of the reef, their status in terms of abundance of adult population and recruits was assessed. The genetic structure of Tridacna maxima was also determined for use in the establishment of network of MPAs around Savu Sea. There were four species identified during the survey: Tridacna crocea, T. maxima, T. squamosa and Hippopus hippopus with T.

Studi etnobotani berguna untuk menganalisis pemanfaatan jenis dan bagian tumbuhan mangrove secara kuantitatif berdasarkan indeks signifikansi budaya (Index of Cultural Significance) masyarakat pesisir. Penelitian dilakukan di area mangrove Taman Wisata Mangrove Kelurahan Oesapa, Pantai Manikin, Pantai Sulamanda Desa Mata Air, Desa Kelapa Tinggi di Kelurahan Tarus, Desa Oebelo dan Desa Pariti. Pengumpulan data menggunakan metode survei lapangan, observasi dan teknik wawancara semi-terstruktur tentang tumbuhan, bagian tumbuhan yang digunakan dan cara pengolahan terhadap masyarakat yang ada di sekitar hutan mangrove. Hasil wawancara diperoleh bahwa terdapat 6 (enam) spesies mangrove major, yakni: Avicennia marina, Sonneratia alba, Bruguiera parviflora, Ceriops tagal, Rhizophora apiculata, dan R. mucronata, dan 1 (satu) spesies mangrove asosiasi, yakni Nypa fruticans. Berdasarkan nilai Indeks Signifikansi Budaya (ICS), R. mucronata memiliki nilai ICS tertinggi (708), yaitu sebagai indikator lingkungan (340) dan bahan bangunan (320). A. marina, nilai ICS 114, terutama pemanfaatannya untuk bahan obat (108), dan S. alba bernilai ICS 54, terutama sebagai  pengganti sirih (12). Mangrove digunakan sebagai indikator lingkungan, kayu bakar, bahan bangunan, bahan obat, kegiatan pertanian, berkaitan dengan mitos, pengganti sirih, pembuatan garam, bahan perahu, pembuatan sirup dan pakan ternak.

At present farming of Kappaphycus alvarezii is one of the main sources of income for the communities and East Sumba Regency. One important aspect in the context of optimizing seaweed farming there is the determination of suitability of farming areas) based on oceanographic parameters. This study aimed to analyze the level of suitability of farming areas of Kappaphycus alvarezii farmed using off-bottom method in East Sumba Regency. The study sites ware determined by purposive sampling at the locations of Kaliuda, Kandora, Tanaraing, Matawai Atu, Wanga, Daharwali, Mondu and Walakiri. Primary data on the physical-chemical factors of the waters and the existing conditions of farmed were collected in situ in the field. Analyzed of suitability of farming sites using a matrix of suitability, weighting and suitability level according to Utojo et.al (2004). The results found that the conditions of oceanographic factors that affect the growth and development of Kappaphycus alvarezii were in the optimal range for temperature, salinity, and pH; and tolerated for currents, substrates, water transparancy, depth and nitrates. Temperatures range from 29.33 to 31.00⁰C; salinity ranges between 34.33-34.67⁰/oo; pH between 7.57-7.83; currents between 0.14-0.25 m/sec; depth between 1.17-2.67 m; water transparancy 100%; nitrates between 0.20-0.35 mg/L. Substrate between coral sand to muddy sand overgrown with seagrasses. The suitability level of Kappaphycus alvarezii farming sites in all sampling locations was Sufficient, this means that the sampling locations representing seaweed farming in East Sumba Regency have limiting oceanographic factors that can be tolerated.

Tunda Island has three potential coastal ecosystems, but they would not be sustainable for the organism when the oceanographic condition is under the quality standards. The research aims to study hydrooceanography as the first profile Marine Conservation Area management plans at Tunda island explains in Zonation Plans on Coastal Areas and Small Island Banten Province. In general, the waters profile condition will describe how it can contribute to the primary productivity of other organisms. Collected the sampling method was in July and November 2020, and the sampling method used purposive sampling on 45 stations across the island. The result of the data analysis from each parameter was the depth of water has ranged from 0.5-52.4±1.14 meters, water transparency from 0.5-13.3±0.25 meters, waters temperature was 29.97- 31.16±0.32 °C, DO was 6.63-8.41±0.31 mg/l, pH from 6.83-7.92±0.25, salinity was 31.6-33.8±0.55 ‰, TDS was 13.8-15.8±0.39 mg/l, conductivity was 22.7-24.8±0.36 mS/cm and ORP from 149-186±7.03 mV. Believed the difference in water quality conditions among stations to be due to differences in the typology of water conditions and currents from the Sunda Strait and the flow of particles from mainland Serang. Where northern and western sides are associated with several small islands and lead to the mainland of Serang. Wheres, south and east sides are directly waters related to the Sunda Strait. The hydro-oceanographic can be used as data and information to develop activities like MPAs plans in Tunda Island waters.

Seaweed farming has developed in Rote-Ndao Regency since 1999, and in Hundihuk Village seaweed farming is currently a mainstay commodity for coastal communities. The main problem faced in seaweed farming there is the phenomenon of the ice-ice disease that attacks seaweed, especially before the change of seasons. The existence of the disease has an impact on a decrease in production which results in a decrease in the income of farmers. The existence of the ice-ice disease, it is suspected that bio-ecologically and biophysically conditions of the waters that are farmed are experiencing disturbances due to pollutants and/or decreased water quality, farming methods that are not suitable due to the dependence of the community on monoculture farming, However, the disease can also be caused by the use of low quality seeds. Therefore, a solution is needed to overcome the problem of ice-ice disease. One of them is the ice-ice disease control model through the application of appropriate and effective farming techniques or methods, so as to increase the productivity of the seaweed farming business, the method in question is farming with a polyculture system and the introduction of resistant cultivars. Farming with a polyculture system that utilizes other macroalgae/seaweeds as companion plants is very effective in controlling the ice-ice disease. The total intensity of infection of the ice-ice disease every week is very small, ranging from 0.2 - 2.5 for the polyculture system compared to the monoculture system with a large range of 0.1-17.1%.