EVALUASI KONDISI TERUMBU KARANG DI PULAU KETAWAI KABUPATEN BANGKA TENGAH

Penelitian ini mengupas mengenai perolehan data terumbu karang di Pulau Ketawai dari hasil analisis citra satelit Aster, survey line intercept transect (LIT), studi literature, wawancara, dan analisis kondisi terumbu karang berdasarkan Kepmen LH No.4 tahun 2001 tentang Kriteria Baku Kerusakan Terumbu Karang. Evaluasi kondisi terumbu karang pada bagian timur pulau dinyatakan BAIK (Baik) dan dapat direkomendasikan untuk lokasi wisata diving, pada bagian selatan dan utara pulau dinyatakan BAIK (Baik) dan RUSAK (Sedang) dan dapat direkomendasikan untuk lokasi calon zona inti daerah perlindungan laut, sedangkan pada bagian barat pulau dinyatakan RUSAK (Sedang) dan dapat direkomendasikan untuk lokasi rehabilitasi ekosistem terumbu karang. Ancaman terhadap kesehatan terumbu karang di Pulau Ketawai terutama bersumber dari kegiatan antropogenik sehingga perlu menerapkan pendekatan ekosistem untuk pengelolaan perikanan berkelanjutan dan melaksanakan daerah perlindungan laut secara efektif. Kata kunci: terumbu karang, Ketawai, ekosistem, pengelolaan, LI

Struktur Komunitas Padang Lamun Di Perairan Desa Sadai Kabupaten Bangka Selatan

This study aims to determine the conditions of the seagrass beds ecosystem, the physical and chemical conditions, that can be database in the waters of Sadai Village, South Bangka Regency. This research was conducted in July 2019. The data analyzed included: Seagrass cover, seagrass density, seagrass frequency, and Importance Value Index (IVI). The value of seagrass stands in Sadai Village waters is relatively rare. Based on the results obtained, Enhalus acoroides is a type of seagrass that has the ability to adapt well to various water conditions so that it is fairly evenly distributed in the five observation stations. The total percentage of total cover in Sadai Village waters ranges from 5.66% -27.37%. It is known that the highest INP value was also found in the Halodule uninervis seagrass species. Thus, it means that the Halodule uninervis seagrass in Sadai waters has an important meaning as a key species related to the condition of the seagrass community in Sadai Village waters. The seagrass ecosystem in Sadai Village waters is used by local residents as a place to find fish, snails and shellfish. Excessive human activity on the land above can increase the sediment load on water bodies which will result in high turbidity which has the potential to reduce light penetration. This can cause disruption to the primary productivity of the seagrass ecosystem because seagrass requires high light intensity for photosynthesis.Penelitian ini diharapkan dapat memberikan informasi mengenai kondisi ekosistem padang lamun dalam bentuk data base Penelitian ini bertujuan mengetahui kondisi padang lamun dan kondisi fisika kimia perairan di perairan Desa Sadai Kabupaten Bangka Selatan. Penelitian ini dilaksanakan pada bulan Juli 2019. Data yang dianalisis mencakup: Tutupan lamun, Kerapatan lamun, Frekuensi lamun, dan Indeks Nilai Penting (INP). Nilai tegakan lamun di Perairan Desa Sadai tergolong jarang. Berdasarkan hasil yang diperoleh jenis lamun Enhalus acoroides yang merupakan jenis lamun yang memiliki kemampuan beradaptasi pada berbagai kondisi perairan dengan baik sehingga tersebar cukup merata di lima stasiun pengamatan. Jumlah persentase tutupan keseluruhan di Perairan Desa Sadai berkisar antara 5.66%-27.37%. Diketahui bahwa nilai INP tertinggi juga didapatkan pada jenis lamun Halodule uninervis. Dengan demikian artinya jenis lamun Halodule uninervis di perairan Desa Sadai memiliki arti penting sebagai jenis kunci terkait dengan kondisi komunitas lamun di Perairan Desa Sadai tersebut. Ekosistem lamun di Perairan Desa Sadai dimanfaatkan oleh warga sekitar sebagai tempat mencari ikan, siput dan kerang-kerang. Aktivitas manusia yang berlebihan di lahan atas dapat meningkatkan muatan sedimen pada badan air akan berakibat pada tingginya kekeruhan sehingga berpotensi mengurangi penetrasi cahaya. Hal ini dapat menimbulkan gangguan terhadap produktivitas primer ekosistem padang lamun karena lamun membutuhkan intensitas cahaya yang tinggi untuk berfotosintesis

PENINGKATAN WAWASAN DENGAN METODE SIMULASI PENGELOLAAN PERIKANAN BERKELANJUTAN DI TWP PADAIDO KABUPATEN BIAK NUMFOR

Kegiatan simulasi pengelolaan perikanan berkelanjutan di TWP Padaido sangat bermanfaat untuk meningkatkan kesadaran masyarakat nelayan akan pentingnya nilai-nilai konservasi. Simulasi ini diarahkan untuk menemukenali kearifan lokal serta memberikan wawasan kepada masyarakat nelayan tentang pentingnya daerah perlindungan laut (DPL) di lokasi terumbu karang dan lokasi penangkapan alternatif, pembatasan jumlah tangkapan dan ukuran ikan, pembatasan jumlah alat tangkap dan ukuran mata jaring, serta penguatan kelembagaan dengan unsur 3 tungku. Kegiatan simulasi ini dilaksanakan di Desa Sasari serta dapat dipraktekan wilayah lain di Indonesia dengan memperhatikan kondisi sosial masyarakat setempat dan pola-pola pemanfaatan sumberdaya yang sudah berlangsun

PEMETAAN SOSIAL MASYARAKAT PESISIR UNTUK MENDUKUNG PENGELOLAAN PERIKANAN BERKELANJUTAN DI TWP PADAIDO KABUPATEN BIAK NUMFOR

Social mapping of coastal communities in TWP Padaido was expected to provide a preliminary picture of the living conditions of the communities in coral reef management priorities location of COREMAP program. This study seeks to collect informations mainly from the focus group discussion (FGDs) and the study of literature both in Biak Numfor and Jakarta. The findings showed that “the three furnace system” e.g. the role of traditional leaders, churches, and government agencies are very dominant in influencing fisheries management rules. In TWP Padaido, the government through the program COREMAP primarily involved in providing policy support for implementing local regulations. In general, traditional systems have a positive impact on society such as sasi. This system can avoid disputes in the resources uses and provide a better incomes for fishermen in TWP Padaido

EVALUASI DAYA DUKUNG EKONOMI BUDIDAYA KERAPU (FAMILI SERRANIDAE) DI PERAIRAN PULAU PONGOK KABUPATEN BANGKA SELATAN

Floating Net Cage (FNC) system were applied to mariculture of groupers (Family Serranidae) in marine waters of Pongok Island, Regency of South Bangka. The economic carrying capacity of the system have been evaluated based on R/C, NPV, PP, and IRR analysis. The result revealed that FNC system still gives a big opportunity as an alternative income for the local residents since it provides a multiplier effect to 127 households in the basic of symbiotic mutualism. Area suitability for grouper mariculture in Regency of South Bangka estimated only used about 0,5% of waters which provides the economic advantage for 127 households, or about 4,3% of 2.959 fishermen in the District of Lepar Pongok. Economic carrying capacity proved to be positively correlated with social carrying capacity to move the economy in the small island with reef fishery resources like Pongok Island. The government policies needed in order to support the FNC system as an economic prime mover in the coastal area or small island with potential reef fishery like in Pongok Islan

ANALISIS PASANG SURUT DI PULAU KARAMPUANG, PROVINSI SULAWESI BARA

Tide phenomenon is one of oceanography parameter that important to capture fisheries or marine culture. This research has been work contains 15 piantan high of sea level from tide harmonics constanta, such as type of tide, mean sea level, chart datum, and tidal range. Type of tide is mixing semidiurnal, MSL is 73,36 cm, Chart Datum -104,29 cm from MSL, and tidal range 48,14 cm

Analisis Penggunaan Alat Tangkap Bubu Terhadap Hasil Tangkapan Ikan Yang Didaratkan di Kota Pangkalpinang

Alat tangkap bubu biasanya mendapatkan hasil tangkapan yang bernilai tinggi seperti Ikan Ekor Kuning, Kerapu Sunu, Kerapu Macan, dan Kakap Merah dan dijadikan sebagai komoditas ekspor. Tujuan dari penelitian yaitu untuk mengetahui konstruksi alat tangkap, komposisi, dan efektivitas hasil tangkapan dengan alat tangkap bubu. Penelitian ini dilakukan pada bulan Januari-Febuari 2021 di Pangkalan Pendaratan Ikan Kota Pangkalpinang. Pada penelitian ini menggunakan Metode analisis deskriptif, dimana pengumpulan data dilakukan secara langsung dengan melakukan wawancara kepada nelayan yang menggunakan alat tangkap bubu. Penentuan jumlah responden menggunakan cara sensus dengan total jumlah nelayan yang di wawancara sebanyak 46 orang. Hasil yang diperoleh dari penelitian ini yaitu alat tangkap bubu memiliki konstruksi alat tangkap yang terdiri dari rangka badan yang menggunakan bahan kayu dan rotan, rangka mulut menggunakan bahan kawat, dengan panjang 100-155 cm, lebar 70- 120 cm, tinggi 20-65 cm, dan mulut memiliki diameter mulut luar 30-50cm, dan lebar 15-20 cm sedangkan diameter mulut dalam berukuran 20 cm dengan mesh size 8 inch. Terdapat 15 Jenis ikan yang tertangkap pada alat tangkap bubu yaitu ikan Libem, Bulat, Ketambak, Kerapu macan, Jebung, Injell kambing, Ekor kuning, Layar kuning, Ketarap, Timun-timun, Talang, Kacang-kacang, Manggali, Kakap merah, Kerapu sunu. Komposisi hasil tangkapan kapal 20 GT Main Catch sebesar 95,45%, By Catch 4,54%. Kapal 25 GT Main Catch 95,44% By Catch 4,55%. Analisi efektivitas hasil tangkapan ikan pada kapal 20 GT dan 25 GT selama 3 kali trip yaitu efektif karena nilai efektivitas 30-60%

MORPHOMETRICS AND SURVIVAL RATE OF FATTENING MAND CRAB (Scylla serrata) CRAB APARTMENT SYSTEM IN PAGARAWAN VILLAGE AND TAKARI BEACH, BANGKA ISLAND

Budidaya penggemukan kepiting bakau (Scylla serrata) biasanya membutuhkan lahan yang luas, inovasi dilakukan dengan membuat apartemen kepiting. Penelitian dilakukan bulan September – November 2023, lokasi penggemukan kepiting di Desa Pagarawan dan Pantai Takari, Kabupaten Bangka. Lokasi pengukuran morfometrik kepiting bakau di Laboratorium Manajemen Sumberdaya Perairan, Universitas Bangka Belitung. Uji kandungan protein di Laboratorium Kesehatan Daerah DKI Jakarta. Penelitian ini bertujuan untuk mengkaji morfometrik, kandungan protein, dan kelulushidupan kepiting bakau di apartemen kepiting di Desa Pagarawan dan Pantai Takari. Metode penelitian dengan eksperimental dan pelibatan masyarakat untuk mengukur morfometrik, kandungan protein, dan kelulushidupan kepiting. Hasil penelitian menunjukkan perbandingan antara berat, lebar, dan panjang kepiting bakau di Pagarawan yaitu 1,6:1,4:1. Hal ini menunjukan kepiting bakau lebih gemuk, saat berat kepiting sekitar 160 gram maka kemungkinan lebar karapas ±14 cm dan panjang karapas ±10 cm, sedangkan kepiting di Takari lebih kecil dan kurus. Kandungan protein kepiting bakau di Pagarawan dengan nilai rata-rata 17,5 gr/100gr dan di Takari 15,1 gr/100gr. Tingkat kelulushidupan atau Survival Rate (SR) kepiting bakau di Pagarawan yaitu 87%. Kondisi ini berarti kepiting cocok dibudidayakan dalam wadah box apartemen kepiting dengan sumber air dari kolam sistem resirkulasi, diduga bahwa pencemaran air akibat ammonia tidak terlalu mempengaruhi. Tingkat kelulushidupan kepiting bakau di Takari menunjukkan persentase nol. Ruang yang sempit, ada sisa makanan, dan sirkulasi air dengan kandungan amoniak hingga 0,05 mg/l diduga berkonstribusi pada kematian kepiting. Kualitas air di kedua tempat pemeliharaan kepiting menunjukkan suhu, pH, salinitas, DO, ammonia, nitrat, dan phospat masih dalam kisaran normal untuk pemeliharaan kepiting bakau.Cultivating fattening mud crabs (Scylla serrata) usually requires a large area of land, innovation is carried out by making crab apartments. The research was conducted in September – November 2023, crab fattening locations in Pagarawan Village and Takari Beach, Bangka Regency. Location of mud crab morphometric measurements at the Aquatic Resources Management Laboratory, Bangka Belitung University. Test protein content at the DKI Jakarta Regional Health Laboratory. This research aims to examine the morphometrics, protein content and survival of mud crabs in crab apartments in Pagarawan Village and Takari Beach. Experimental research methods and community involvement to measure morphometrics, protein content and crab survival. The results of the research show that the ratio between weight, width and length of mangrove crabs in Pagarawan is 1.6:1.4:1. This shows that mud crabs are fatter. When the crab weighs around 160 grams, it is likely that the carapace width is ±14 cm and the carapace length is ±10 cm, while the crabs in Takari are smaller and thinner. The protein content of mangrove crabs in Pagarawan has an average value of 17.5 gr/100gr and in Takari 15.1 gr/100gr. The survival rate (SR) of mangrove crabs in Pagarawan is 87%. This condition means that crabs are suitable for cultivation in crab apartment boxes with a water source from a recirculation system pond. It is assumed that water pollution due to ammonia will not have much of an impact. The survival rate for mud crabs in Takari shows a zero percentage. The narrow space, food waste, and circulating water with an ammonia content of up to 0.05 mg/l are thought to have contributed to the crab's death. Water quality in both crab rearing areas shows that temperature, pH, salinity, DO, ammonia, nitrate and phosphate are still within the normal range for rearing mud crabs

Squid Resource Management (Loligo sp.) with a Bioeconomic Approach in Belitung Regency

Squid is one of the catches that contributes a lot to the value of marine fishery production in the Belitung Regency. In addition, squid is one of the fish resources that are economically valuable. Until now, all squid production in Indonesia comes from catches in nature. This means that products derived from cultivation do not yet exist. If only relying on the effort of the results of the capture alone, it is not impossible that one day there will be overfishing. The purpose of this study is to know the bioeconomic aspects of squid resources in the Belitung Regency. Research has been carried out in the waters of the Belitung Regency of Bangka Belitung Islands Province, with research locations in 3 (three) sub-districts that become fishing bases for squid fisheries, namely Sijuk, Membalong, and Tanjung Pandan districts. The method used is Purposing Sampling with case studies taking primary data from interviewed fishermen directly and secondary data from the Belitung district marine and fisheries service and Tanjung Pandan Regency VAT. Gordon Schaefer's Bioeconomics Analysis yields a CMSY value of 34.522 tons/year and an EMSY of 16.105 ships/year.  MEY condition was obtained at the time of CMEY value of 34.327 tons/year and EMEY value of  14.893 units of ships/year. The condition of OAE was obtained at the time of the COAE value of 9.616 tons/year and the EOAE value of 29.785 units of ships/year. The squid utilization rate in Belitung Regency has experienced overfishing in 2018 by 220%

Perbandingan Kelimpahan Ikan Karang Pada Fish Shelter Di Karang Melantut Pantai Rebo Dan Pantai Matras Kecamatan Sungailiat, Kabupaten Bangka

Tin mining activities carried out on the waters of Bangka Island have a negative impact on coral reef ecosystems, it is necessary to rehabilitate coral reef ecosystems such as sinking fish shelters in these waters, so that can provide new habitat for reef fish. The purpose of this study is to see the comparison of the abundance of reef fish in fish shelter in the waters of Karang Melantut Rebo Beach and Matras Sungailiat Beach. This research was conducted in March and April 2019, using the visual census method. The results of the study mention the presence of reef fish species found in both locations of fish shelter is 32 species from 12 families. The abundance of reef fish that is most commonly found in both locations is there are 214 individuals on Matras Beach in March. While the least of reef fish abundance was found in Karang Melantut on Rebo Beach in April is 90 individuals. This is due to the sinking time of fish shelter at Matras Beach earlier and the characteristics of sinking fish shelter location on Matras Beach far from the coral reef ecosystem. So that can be concluded that fish shelter sinking activities can solve the mining activities who have a negative impact on coral reefs