Judul: Karakteristik lanskap tegakan bamboo di hulu das kali Bekasi
Abstrak: A high rate of land use change around the upper stream of Kali Bekasi watershed currently causes various environmental problems including threath on biodiversity. Indonesia, which is namely as mega-biodiversity country, has about 143 bamboo species and 60 species was reported that they were planted in Java. Nine of them were endemic species and it has been utilized widely by rural people for daily uses. The objectives of this research were to map a bamboo distribution; to analyse bamboo and non-bamboo stands diversity and biomass; to analyse bamboo utilization and management based on traditional ecological knowledge; and to establish recommendation for sustainable bamboo management. Survey method was used for collecting bamboo data. Data analysis used landcover and bamboo classification by image classification analysis, bamboo and non-bamboo biomass index, diversity index analysis by Shannon’s index, and local ecological analysis. Result showed that bamboo was accupied about 5.360,89 ha or 11,39% of total area with six bamboo species. The highest bamboo diversity index was in the higher part of the upper stream of Kali Bekasi watershed (0,62), however the highest bamboo biomass index was found in the lower part of the upper stream of Kali Bekasi watershed (98,96 ton/ha). About 230 trees and belong to 29 species and 27 above-ground plant species were also found in the surveyed area. Local knowledge about bamboo cultivation and management, their values and uses to environment and daily life were to keep bamboo still exsist. Sustainable bamboo stands management should be done with the agroforestry concept in mixed garden. This option would be better cooperated amongs farmers and local community in order to conserve bamboo and tree species diversity with harmony to local wisdom.
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Judul: Lanskap kebun bambu di daerah aliran sungai Ciliwung bagian Tengah, Bogor, Jawa Barat
Abstrak: Bambu merupakan salah satu tanaman Indonesia yang tumbuh dan berkembang mulai dari pesisir pantai sampai pegunungan. Bambu memiliki beberapa keunggulan bila dibandingkan dengan bahan lain yaitu mempunyai daya tumbuh yang sangat pesat (3-4 tahun), dapat dipakai langsung serta dipergunakan untuk berbagai macam keperluan. Pemanfaatan bambu tanpa disertai adanya budidaya akan berakibat pada penurunan biodiversitas dan perubahan tata guna lahan yang berdampak buruk bagi lingkungan. Penelitian ini berusaha untuk melihat kenyataan yang ada di lapang dan berusaha memberi solusi bagi permasalahan tersebut. Tujuan studi ini meliputi inventarisasi dan analisis jenis- jenis tanaman bambu yang tumbuh di Daerah Aliran Sungai (DAS) Ciliwung bagian tengah dan penggunaannya oleh masyarakat sekitar serta pemanfaatannya dalam pengelolaan lanskap di DAS Ciliwung bagian tengah. Selain itu, dilakukan pemetaan penggunaan kebun bambu di DAS Ciliwung bagian tengah. Penelitian dilakukan di DAS Ciliwung bagian tengah yang berpusat pada bantaran sungai di tiga lokasi yaitu Katulampa (Hulu), Sempur (Tengah) dan Kedunghalang (Hilir). Pelaksanaan penelitian dilakukan dalam tiga tahap yaitu pra survei, survei dan pasca survei. Data yang diambil berupa data biofisik, lingkungan, spasial dan sosial. Data spasial meliputi penghitungan jumlah buluh bambu tiap rumpun, pengukuran diameter tajuk tiap rumpun dan penitikan koordinat tiap rumpun bambu untuk pembuatan peta. Jumlah buluh bambu tiap rumpun dihasilkan melalui perhitungan rata-rata dari 5 sampel untuk tiap jenis bambu. Diameter tajuk tiap rumpun dihitung menggunakan rumus luas lingkaran. Hasil dari perhitungan ini digunakan untuk menghitung luasan ruang terbuka hijau (RTH) bambu di tiap lokasi. Koordinat tiap rumpun yang diperoleh dipindahkan pada peta digital dengan menggunakan program Sistem Informasi Geografis (SIG) untuk menghasilkan peta baru. Tiap titik yang dihasilkan memuat data mengenai letak koordinat UTM, jenis bambu dan luas rumpun bambu...
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Judul: Pengujian Virus Newcastle Disease Gen VII Isolat Lapang Sebagai Virus Standar Pada Uji Tantang Vaksin
Abstrak: This study was conducted to determine the standard of Newcastle disease virus Gene VII field isolate as a virus challenge to vaccine test. A virus suspension that has previously been tested by HA test then titrated with EID50 using 30 Specific Pathogen Free (SPF) of 10 day old chicken embryonated eggs. In addition, chicken lethal dose50 (CLD50) test were used to determine the virus titer that could cause 50% death of the chicken population. The CLD50 test was used 25 day-old-chickens (DOC) divided into 5 groups. The virus was diluted from 10-1 to 10-8. The 104 to 10-8 dilution of NDV was infected to every group of chicken via eyedrop and intranasal with 0.1 ml/chicken dosage. Haemagglutination test showed that the allantoic fluid were contain high titers of NDV is 512 HAU. The infective NDV that had been titrated by EID50 test showed the virus titers is 109 EID50/0.1 ml or 1010 EID50/ml and the virus titers of CLD50 test e.i 106.48 CLD50/0.1 ml or 107.48 CLD50/ml. These results can be concluded that the NDV Gene VII field isolates were most appropriate to be used as a standard virus to vaccine test
Keyword: Newcastle Disease Virus Gene VII, HA tes, EID50 test, CLD50 test