Judul: Kajian Potensi Jasa Lingkungan (Biomassa dan Karbon) Hutan Mangrove Di Tanjung Bara, Sangatta Utara, Kalimantan Timur
Abstrak: Mangrove forest at Tanjung Bara which has area 841,8 ha (0,52% of forest total area at Sangatta Utara) had important roles to reduced carbon dioxide emission from operational activities of coal mining. This research has purposed to calculated the above-ground biomass and carbon of mangrove vegetation as enviromental services function to carbondioxide emission from operational activities of coal mining. The above-ground biomass of tree was calculated by allometric equation. Carbon storage was calculated with C=0,46% W (above ground biomass). Biomass and carbon of vegetation of seedlings and saplings were calculated through fixed carbon analysis. Result showed that the highly average biomass of mangrove vegetation of Tanjung Bara was 322,68 t/ha on Sonneratia zone. Carbon storage of mangrove vegetation at Tanjung Bara is 109,68 t C/ha or 402,53 t CO2/ha. Mangrove forest at Tanjung Bara given enviromental services potential about 14,34% to reduces carbondioxide emission from operational activities of coal mining.
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Judul: Kalkulasi Biomassa Karbon pada Ekosistem Mangrove di Pesisir Kabupaten Tangerang
Abstrak: Kabupaten Tangerang memiliki potensi mangrove di wilayah pesisirnya yang berperan penting dalam penyerapan karbon yang disimpan dalam bentuk bimassa mangrove. Penelitan ini bertujuan menentukan kemampuan mangrove dalam menyimpan karbon serta rencana pengelolaannya di Pesisir Kabupaten Tangerang. Penelitian dilakukan di Desa Ketapang, Patramanggala dan Tanjung Pasir. Persamaan alometrik digunakan untuk meghitung biomassa mangrove kemudian stok karbon disetimasi. Hasil penelitian menunjukkan kerapatan mangrove tertinggi sebesar 274 ind/ha.. Rata- rata stok karbon dan serapan emisi karbon jenis Rhizhopora stylosa adalah 0,75ton C/ha (2,74 ton CO2e/ha), jenis Avicennia marina 13,41ton C/ha (49,17 ton CO2e/ha), jenis Avicennia alba 0,50ton C/ha (1,84 ton CO2e/ha) dan jenis Rhizophora mucronata mencapai 0,14ton C/ha (0,51 ton CO2e/ha). Rata-rata stok karbon Desa Ketapang 3,70ton C/ha, Desa Patramanggala mencapai 3,32ton C/ha dan Desa Tanjung Pasir mencapai 3,55ton C/ha Kemampuan mangrove dalam menyerap karbon tertinggi ditemukan pada jenis Avicennia marina dan desa simpanan karbon tertinggi adalah Desa Ketapang., Tangerang Regency has the potential of mangroves in its coastal areas and important role carbon sequestration and absorption in biomass. This study purpose to determine the ability of mangroves to absorb carbon and their management plans in Coastal Tangerang. The research Ketapang village, Patramangala and Tanjung Pasir. Allometric equations are used to calculate mangrove biomass and then carbon stock is estimated. The results showed the average carbon stock and carbon emission absorption of Rhizhopora stylosa is 0.75 tonsC/ha (2,74 tons CO2e/ha), Avicennia marina is 13.41tons C/ha (49,17 tons CO2e/ha) Avicennia alba is 0.50tons C/ha (1,84 tons CO2e/ha) and Rhizophora mucronata is 0.14 tons C/ha (0,51 tons CO2e/ha). The average stock carbon based on different locations, namely Ketapang Village reached 3.70tons C/ha, Patramangala Village reached 3.32tons C/ha and Tanjung Pasir Village reached 3.55tons C/ha The highest ability of mangroves to absorb carbon was found on the Avicennia marina species and the village with the highest carbon is Ketapang Village.
Keyword: blue carbon, mangrove, emission absorption

Judul: Evaluation of Influenza Antibody Titers in Serum and Egg Yolk of Layers Vaccinated with Influenza Vaccines.
Abstrak: Influenza belongs to the Orthomyxoviridae family which causes upper and lower respiratory tract infection. The aim of this study was to evaluate influenza-A specific antibody titers from serum and egg yolk of hens vaccinated with quadrivalent influenza vaccines. Three Hy-line Brown layers were vaccinated with quadrivalent influenza type A and B inactivated vaccines. Vaccination was carried out three times at a dose of 0.25 ml/chicken via the intramuscular route. The first vaccination was carried out at 24 weeks of age, then boosters were performed at 28 and 32 weeks of age. Serum and egg yolk were collected every week for 20 weeks since the first vaccination. Influenza A H3N2 and H1N1 antibody titers were determined using hemagglutination-inhibition (HI) test and agar-gel-precipitation (AGP) test. Influenza-A H3N2 and H1N1 specific antibodies were detected in both serum and egg yolk from the first to twenty weeks after the initial vaccination. Highest HI geometric mean titer (GMT) of H1N1 antibody reached 26.67 HIU at nine weeks post first vaccination (p.f.v), while H3N2 antibody reached 26 HIU at six weeks p.f.v. Our result showed that influenza antibodies can be produced in layers using quadrivalent vaccines and layer chickens are able to produce equivalent antibody levels for each influenza subtype.
Keyword: antibody, egg yolk, influenza, layer chickens, serum