Judul: Valuation of Mangrove Ecosystem Services in Pramuka Island as Habitat, Carbon Sequestration, and Coastal Protection
Abstrak: Mangrove merupakan ekosistem produktif yang memiliki banyak manfaat. Namun, analisis biaya manfaat tidak langsung pada jasa ekosistem mangrove sulit diperkirakan karena dinilai terlalu rendah, sehingga menyebabkan degradasi ekosistem mangrove. Penelitian ini bertujuan untuk memperkirakan nilai jasa ekosistem mangrove sebagai habitat, penyerap karbon, dan pelindung pesisir. Penelitian dilakukan di Pulau Pramuka pada bulan November 2023–Februari 2024. Penilaian ekonomi menggunakan metode pendekatan harga pasar (market price), Social Cost of Carbon (SCC), dan replacement cost. Hasil penelitian mendapatkan potensi tangkapan ikan dan udang masing-masing sebesar 60.707 kg/tahun dan 2.964 kg/tahun dengan valuasi senilai Rp 1.166.791.922/tahun. Rata-rata stok karbon mangrove yaitu 138,80 tonC/ha dengan kapasitas penyerapan karbon sebesar 509,39 tCO2/ha, sehingga menghasilkan valuasi senilai Rp 1.266.403.862/tahun. Ekosistem mangrove sebagai jasa pelindung pesisir didapatkan valuasi senilai Rp 486.857.750/tahun. Hal tersebut dipengaruhi oleh luas area, kerapatan, biomassa mangrove, jumlah produksi dan harga komoditas ikan, serta geomorfologi pesisir Pulau Pramuka., Mangroves are productive ecosystems that have many benefits. However, indirect benefit-cost analysis of mangrove ecosystem services is difficult to estimate because it is undervalued, leading to mangrove ecosystem degradation. This study aims to estimate the value of mangrove ecosystem services as habitat, carbon sink, and coastal protection. The research was conducted on Pramuka Island in November 2023-February 2024. The economic valuation used market price, Social Cost of Carbon (SCC), and replacement cost approaches. The results showed that the potential catch of fish and shrimp was 60,707 kg/year and 2,964 kg/year, respectively, with a valuation of Rp 1,166,791,922/year. The average mangrove carbon stock is 138.80 tonsC/ha with a carbon sequestration capacity of 509.39 tCO2/ha, resulting in a valuation of Rp 1,266,403,862/year. Mangrove ecosystems as coastal protective services obtained valuation worth Rp 486,857,750 / year. This is influenced by the area, density, biomass of mangroves, the amount of production and price of fish commodities, and the coastal geomorphology of Pramuka Island.
Keyword: karbon biru, jasa ekosistem, valuasi

Judul: Carbon Stock Estimation of Mangrove in Pramuka Island, Kepulauan Seribu
Abstrak: Ekosistem mangrove merupakan salah satu ekosistem yang dapat menyerap emisi gas sehingga dapat menjadi upaya dalam mitigasi pemanasan global. Pulau Pramuka merupakan salah satu pulau di Kepulauan Seribu yang memiliki ekosistem mangrove yang sangat luas sehingga memiliki potensi untuk menyimpan karbon. Penelitian ini bertujuan untuk mengetahui banyaknya stok karbon serta banyaknya karbon yang terserap pada area mangrove di Pulau Pramuka, Kepulauan Seribu, DKI Jakarta pada tegakan dan sedimen. Pengambilan sampel menggunakan metode non destuktif dengan melakukan pengukuran diameter pohon mangrove setinggi dada (DBH) pada 4 stasiun dan menggunakan pipa akrilik untuk mengambil sedimen. Perhitungan biomassa mangrove pada atas dan bawah permukaan menggunakan persamaan alometrik. Analisis karbon tanah menggunakan metode Walkey & Black. Hasil penelitian menunjukkan estimasi potensi stok karbon mangrove di Pulau Pramuka adalah sebesar 345,06 tonC/ha. Kawasan mangrove di Pulau Pramuka mampu menyimpan karbon pada sedimen sebesar 63,86 tonC/ha. Kata kunci: emisi, karbon, mangrove, Pulau Pramuka, Mangrove ecosystem is one of the ecosystems that can absorb gas emissions so that it can be an effort in mitigating global warming. Pramuka Island is one of the islands in Kepulauan Seribu that has a very extensive mangrove ecosystem that has the potential to store carbon. This study aims to determine the amount of carbon stock and the amount of carbon sequestered in mangrove areas on Pramuka Island, Kepulauan Seribu, DKI Jakarta in stands and sediments. Sampling using non destructive method by measuring the diameter of mangrove trees at breast height (DBH) at 4 locations and using acrylic pipes to take sediments. Calculation of mangrove biomass above and below the surface using the allometric equation. Soil carbon analysis using the Walkey & Black method. The results showed that the estimated potential of mangrove carbon stock in Pramuka Island was 345,06 tonsC/ha. The mangrove area on Pramuka Island is able to store carbon in sediments amounting to 63,86 tonsC/ha. Keywords: carbon, emissions, mangrove, Pramuka Island
Keyword: stok karbon

Judul: Studi Kasus Liver Neoplasia pada Anjing Shih Tzu
Abstrak: Liver neoplasia is the excessive and uncontrolled replication of hepatocytes that forms nodules visible in ultrasonography. The purpose of this study is to study and discuss the characteristic, diagnosis and treatment of liver neoplasm through the interpretation of ultrasonography and hematology in a Shih Tzu dog. Ultrasonography is conducted with a Chison Q8 ultrasound machine with a 5 to 7 MHz frequency convex probe on lateral recumbency. The blood cells, liver enzymes and nodules sizes were the main parameters in this study. The results in the period of three years from 2021 to 2023 were interpreted and supported with secondary data sources. The Shih Tzu dog is 14 years old in the year 2023 with a body weight of 5.21kg. No obvious clinical signs were observed during previous examinations. However, lethargy, vomiting and anorexia were recorded in its latest examination. Thrombocytosis, granulocytosis, high liver enzymes and hypoglycemia, which are some of the neoplastic clinical manifestations were also presented by this patient. Besides, liver neoplasm, spleen neoplasm and biliary sludge were the sonogram findings of this patient. The liver and spleen neoplasm was observed stable, while the biliary sludge volume fluctuated. The treatment strategy recorded is Ondansetron, Samylin®, Ornipural and Ursodeoxycholic acid.
Keyword: Blood biochemistry profile, Hematology, Liver Neoplasia, Shih Tzu, Ultrasonography