Mangrove forest has an important function for living thing especially in the ocean and coastal area. Besides as feeding and nursery ground, mangrove forest is also has a function as carbon sinker. The utilizing of mangrove forest as a corbon sinker is one of ways to reduce CO2 in atmosphere. Mangrove forest in Oebelo village has a capability to utilize as carbon sinker. The aim of this research was to estimate above ground biomass and carbon reserve from two mangrove species Avicennia marina and Rhizopora mucronata in coastal area of Oebelo Village. In this research data was collected from diameter breast high and litter from forest floor. Alometric was used to estimate the above ground biomass. After data collected, analysis would continue with t test to know the different between these two species.The result showed A. marina and R. mucronata were different, the highest biomass, carbon reserve and CO2 sequestration were in A.marina respectively 118.80 Mg.ha-1, 54.65 Mg.ha-1, 200.37 Mg.ha-1 and R. mucronata respectively 28.90 Mg.ha-1, 13.30 Mg.ha-1, 48.75 Mg.ha-1. The result for litter biomass and carbon reserve showed there was no different between these tow species.

This research has been carried out in the Savu Sea Waters. The method used in data collection through interviews and questionnaires. Data collected and analyzed in this study are Direct Use, Indirect, Option, Existence and Bequest Value. The types of benefits identified and quantified are coral reef resources in the Savu Sea, especially those in Kupang Regency Coastal Area for Use Value, the Direct, Indirect, Option, Bequest, and Existence Value. Then a comparison is made between the direct value of coral reefs consisting of capture fisheries, aquaculture and tourism. While the value of indirect of coral reefs includes abrasion, carbon sink, fish nursery, spawning and Feeding Ground. And Non Use Value which consists of Option Value, Bequest, and Existence. The results of the analysis show that the value of direct is Rp. 218,027,971,623, 69 / year, indirect is Rp. 20,795,211,891.89 / year, option value is Rp. 3,967,284,324.32 / year, the existence is Rp. 4,121,520,000 / year, and the value of inheritance is Rp. 4,087,245,405.41. The highest Direct Use Value is in the form of capture fisheries value, while the lowest is in the form of aquaculture. Furthermore, for the economic value of Indirect as a Feeding Ground is the highest value compared to the others and the value of research benefits is the lowest. Meanwhile, the highest Non Use Value is the Existence and the lowest is the Bequest.

This study is conducted in Oebelo waters, Central Kupang Sub-district from October to December, 2013. It aims to find out the fishing power of trap (ID: bubu) in different types toward mangrove crab catch. It uses observation method by experimental fishing for one month. The findings show that the caught crab consists of 6 species, i.e. Scylla serrata, S. transquabarica, S. olivacea, Portunus pelagicus, Charybdis granulata and C. anisodon which six of these species are caught in every trap type. The caught crab species with the highest proportion is Scylla serrata by 60 crabs (58.823%), then followed by the other species. Trap type having the highest abundance rate is conical type code B 2.3, then conical type code B 3.2 and followed by the other types. Trap code B 2.3 and B 3.2 is the trap prototype having the higher fishing power compared to the others. Trap having the highest CPUE value is conical shape type code B 3.2, followed by semicircular shape code C 3.2, cube-shaped type code A 2.2 and the other types. Trap engineering in this observed crab 80 fishing is one of the important information to improve the trap construction design and mangrove crab fishing method by utilizing trap in the future.

Original Research Article This study aims to determine the socioecological impact of mangrove ecosystems on the coastal communities in Oesapa Village and Tanah Merah Village, Kupang Bay. The method used to retrieve data in this study is the method of observation and interviews. Socioecological data on the use of mangrove ecosystems were analyzed using descriptive analysis, then data on socioecological impacts of mangrove ecosystems were analyzed by chi-square test (X 2), while the relationship of socioecological impact of mangrove ecosystems on coastal communities in Kupang Bay was analyzed using simple correlation analysis. The results of this study indicate that the social impact of mangrove ecosystems on coastal communities in Kupang Bay is the use of mangroves as fuel and building materials, boat landing areas, fishing ground shells, crabs, and shrimp and mangrove ecotourism. Furthermore, the ecological impact of mangrove ecosystems on coastal communities in Kupang Bay consists of utilization as a coastal protector from wave or wave abrasion, spawning ground and nursery ground for fish, shrimp and shellfish seeds, sediment traps from the land, nutrient providers for life and growth biota, and a place for birds to nest. Chi-square test results showed that the mangrove ecosystem in Kupang Bay based on community perceptions, had no significant social impact (P>0.05) for the local community, but had significant ecological impact (P<0.05). However, there was a strong relationship (P>0.05) between the mangrove ecosystem and the socioecological impacts in Kupang Bay.

Perairan Teluk Kupang memiliki potensi ikan cukup melimpah. Alat tangkap yang dikembangkan nelayan untuk menangkap ikan yakni Bagan Apung dan Gill Net. Hasil tangkapan yang diperoleh memiliki jenis  ikan dan ukuran bervariasi karena penggunaan mata jaring (mesh size) berbeda ukurannya. Penelitian telah dilaksanakan bulan Juli sampai September 2019,  bertujuan mendeskripsikan tingkat keramahan Bagan  Apung dan  Gill Net serta menentukan proporsi indikator  penilaian tingkat keramahan  alat tangkap. Metode yang digunakan dalam penelitian yakni wawancara dilakukan  pada 15 nelayan Bagan Apung dan  14 nelayan Gill Net  terkait 9 kriteria penilaian  tingkat keramahan alat tangkap menurut FAO 1995.  Nilai setiap kriteria diberi skor 1- 4, kemudian dibuat rangking dengan  nilai maksimum 36.  Berdasarkan  skor penilaian 9 kriteria, kemudian ditentukan   proporsi indikator penilaian untuk kategori I-IV.  Observasi lapangan dilakukan di tempat pendaratan ikan/pasar ikan untuk mengetahui jenis dan ukuran ikan. Hasil penelitian menunjukkan  bahwa ikan yang tertangkap pada Bagan Apung dan Gill Net bervariasi baik jenis, bentuk tubuh maupun ukuran ikan. Hasil analisis  9 kriteria  menunjukkan bahwa  Gill Net mempunyai nilai tingkat keramahan lingkungan sebesar 30.0 lebih tinggi dari Bagan Apung sebesar 29.46, namun keduanya tergolong sangat ramah lingkungan.    Hasil analisis proporsi indikator penilaian untuk kategori I - IV menunjukkan bahwa Bagan Apung dan Gill Net sudah memenuhi  9 kriteria penilaian  tingkat keramahan alat tangkap. Namun proporsi penilaian indikator untuk kategori I-IV pada kriteria penilaian No.1,  Bagan Apung mempunyai selektifitas  dalam menangkap ikan sangat tidak ramah lingkungan/sangat berdampak  dari pada Gill Net,  sedangkan  8 kriteria lain sudah memenuhi syarat kriteria tingkat keramahan alat tangkap.