Judul: Tingkat Kepekaan Lingkungan Ekosistem Mangrove di Kecamatan Ujung Pangkah Kabupaten Gresik Provinsi Jawa Timur
Abstrak: Mangrove ecosystem in Ujung Pangkah District Gresik Regency has an important role in human life, flora, and fauna in the delta of Bengawan Solo River. The existence of this mangrove ecosystem is also threatened by pollution from oil spills, either from industrial activities on land, as well as in waters such as tanker crashes, port activities, ship operations, oil loads, leaks and explosions during offshore oil exploration, and Some other activities in the upstream area. The purpose of this research is to determine the level of environmental sensitivity of mangrove ecosystem to oil spill in Ujung Pangkah Sub-district by using geographic information and remote sensing application system. There are about 8.16% of Ujung Pangkah Subdistricts that fall into the category of very sensitive. This type is located in the mudflat area and the most dominant is in the pond. Overall, sensitivity categories with sensitivity rates were the dominant category with approximately 82.67%. This category lies in an ocean of 4,765.68 hectares and on land covering 5,919.61 hectares. Furthermore, based on SWOT analysis, there are 10 strategies to overcome the impact of oil spill in ecosystem mengrove Ujung Pangkah District with sensitivity category at "very sensitive" level, namely: 1) zoning of zone of environmental sensitivity, 2) socialization of traditional fishing zone, 3) Participatory mapping, 4) Maintaining greenbelt area from occupation of land, 5) Planting in greenbelt area, 6) Formation of local regulations on greenbelt, 7) Disaster adaptation and mitigation, 8) Formation of disaster taskforce, 9) Simulation of oil spill response, 10) Monitoring Forum Environment openly and periodically.
Keyword: Bengawan Solo River, geographic information system, oil spill, remote sensing, SWOT

Judul: Pengelolaan Ekosistem Mangrove Berkelanjutan Melalui Pengembangan Ekowisata di Ujungpangkah, Kabupaten Gresik, Jawa Timur
Abstrak: Kerusakan ekosistem mangrove akhir akhir ini mengancam keberadaan ekosistem tersebut. Ekosistem mangrove Ujungpangkah di Muara Sungai Bengawan Solo merupakan salah satu dari beberapa ekosistem mangrove yang tersisa di Jawa Timur. Salah satu pengelolaan ekosistem mangrove berkelanjutan adalah melalui pengembangan ekoswisata. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis dan struktur ekosistem Mangrove di pesisir Ujungpangkah, mengkaji jenis wisata yang layak dilakukan dan menganalisis pengembangan ekowisata serta mengkaji strategi pengembangan ekowisata mangrove di Ujungpangkah, Kabupaten Gresik, Jawa Timur. Struktur ekosistem mangrove diperoleh dengan analisis vegetasi mangrove dan analisis spasial dengan menggunakan analisis NDVI (Normalized Difference Vegetation Index), kajian kesesuaian jenis wisata menggunakan analisis multikriteria dan kajian strategi ekowisata mangrove dikembangkan dengan menggunakan metode AWOT. Luas mangrove di Ujungpangkah berdasarkan hasil analisis spasial seluas 1.445 hektare yang tersebar di 4 desa dengan rincian klasifikasi 650 hektare lebat, 453 hektare sedang, dan 342 hektare jarang. Komposisi penyusun jenis mangrove yang ditemukan meliputi 7 jenis mangrove yaitu Avicenia marina, Rhizopora mucronata, Rhizopora apiculata, Bruguiera cylindrica, Excoecaria agallocha, Sonneratia alba dan Bruguiera gymnorrhiza. Avicenia marina dan Rhizopora mucronata merupakan dua jenis mangrove dengan INP tertinggi pada setiap strata pertumbuhan. Avicenia marina memiliki nilai INP tertinggi untuk strata pohon (71.73%) sedangkan Rhizopora mucronata dominan pada strata anakan (82.55%). Jenis kegiatan ekowisata dengan kategori sangat sesuai atau layak dilakukan berupa kegiatan Joging Track di Desa Banyuurip dengan nilai 84,52%, Memancing di Desa Pangkah Kulon 83,23%, Memancing di Desa Pangkah Wetan 83,23%. Strategi pengembangan ekowisata mangrove di Ujungpangkah antara lain (1) Membangun sarana dan prasarana wisata yang belum ada, (2) Meningkatkan partisipasi masyarakat dalam empowernment di bidang wisata, (3) Mengembangkan kegiatan konservasi dan rehabilitasi mangrove sebagai salah satu kegiatan wisata, (4) Mempertegas penegakan hukum dan aturan untuk menjaga kelestarian mangrove, (5) Memperkuat konsep ekowisata. Prioritas utama strategi pengembangan ekowisata mangrove Ujungpangkah adalah membangun infrastruktur yang belum tersedia.
Keyword: mangrove, kerapatan, AWOT, Ujungpangkah

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