Judul: Feasibility study of mangrove rehabilitation using Guludan technique in perspective of mangrove trading in protected mangrove area in Muara Angke, DKI Jakarta Province
Abstrak: Laju kerusakan hutan mangrove yang mencapai 530.000 ha/tahun menuntut untuk segera dilakukan upaya rehabilitasi, faktor penyebab kerusakan antara lain adalah tekanan populasi manusia, eksploitasi produk kayu dan konversi lahan menjadi tambak (Ong 2002). Ancaman lain adalah terkait perubahan iklim, yaitu kenaikan permukaan air laut, perubahan hidrologi, temperatur, dan konsentrasi CO2 (Kusmana 2010a)., Rate of mangrove forest destruction reaching up to 530,000 ha per year has made it necessary to conduct rehabilitation efforts. Several factors caused mangrove forest destruction i.e. human population, wood exploitation, and land conversion to become ponds (Ong 2002). Other threats are climate changes, especially the increase of sea level, hydrology changes, temperature, and CO2 concentration (Kusmana 2010a).
Keyword: Avicennia marina, guludan, CO2 absorption, REDD+, financial feasibility

Judul: Strategi Rehabilitasi Ekosistem Mangrove Melalui Analisis Tingkat Kerusakan di Suaka Margasatwa Muara Angke Provinsi DKI Jakarta.
Abstrak: The phenomenon of mangrove degradation that occurred in the last decade at Muara Angke Sanctuary is caused by various factors, such as land conversion to ponds for aquaculture, pollution, sedimentation, and variety of human activities around. Most of rehabilitation conducted in this area to recover mangrove ecosystem. Unfortunately, it had not yet significantly give positive impacts as wishes. The aim of this study are to analyze mangrove damaged level dan damaged rate, evaluate previous rehabilitation, and formulate strategy for mangrove rehabilitation. This study uses a mangrove vegetation analysis method, aquatic environment analysis, quesionaire analysis and interviews, and Landsat Image analysis. The results of this study classifiy mangrove vegetation in this area to very high density (2,82 ha or 37% of mangrove area), rare or damaged (1,23 ha or 16% of mangrove area) and damaged heavily (3,62 ha or 47% of mangrove area). Damaged rate of mangrove vegetation is 0,569 ha/year. Rehabilitation in this area have not yet significantly influence to mangrove ecosystem. Recommended strategy of rehabilitation according to this research are strategy for ecology, policy, sosial and economy.
Keyword: mangrove, degradation, damaged analysis, rehabilitation, strategy

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