Judul: Analisis Sosial Ekonomi Pemanfaatan Kawasan HUtan Lindung Mangrove dengan Sistem Tambak Tumpangsari yang Berkelangsungan (Kasus: RPH Cibuaya, BKPH Cikiong, KPH Purwakarta
Abstrak: Mangroves have degradation that one of it's caused by forest conversion to fishponds. RPH Cibuaya adopted silvofishery system with classes. Its consist of Class 1 (≥ 80% of mangroves), class 2 (60-80% of mangroves), class 3 (40-59% of mangroves) and class 4 (< 40% of mangroves). This research was conducted to calculate social economic value of silvofishery and shows the mangroves conservation value by rehabilitation. The data were collected by interview, questioner, direct observation and study literature. The data were analyzed with qualitatifely and quandtitafiley by R-C ratio method. Mangroves utility was not influenced by gender, social status and education. Besides use mangroves as fishponds, people use mangroves as firewood (33,33%) and natural ecotourism (26,09%). Highest income is Class 4 which is manage intensively. The seeds growth aren't disturbed by dirty water and badsmell because of less vegetation. That be one of the advantages from Class 4 besides easy and quickly harvesting (didn't disturbed by mangroves root). Because of Class 4 domination, causes the forest damage, such as cutting the vegetation or much fertilizing)
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Judul: Kinerja Rehabilitasi Hutan Lindung Mangrove, di RPH Cibuaya BKPH Cikiong KPH Purwakarta
Abstrak: The degradation of mangrove-protection forest in RPH Cibuaya is caused by forest utilization which gives more priority to economic value and land conversion. This kind of utilization changes the mangrove forest from natural usage into cultivation (fishpond) usage with embankment ditch system. The effort on rehabilitation is done in order to return the function of area into protection forest again. The successfulness level in KPH Cikiong is very low due to ineffective rehabilitation program and local people’s activity which disposed disturbing the forest. The aim of this research is to explain the effort on mangrove-protection rehabilitation, which observed from the large of land covering by mangrove vegetation and determining the best fishpond rent-fee. The best fishpond rent-fee determination is based on the function value of protection forest and people’s willingness to pay. The measurement of land cover was done using line intercept technique while the determination of fishpond rent-fee could be arranged from interview using Valuation Contingent Method with bargaining approach. The willingness to pay and willingness to accept were analyzed using regression statistic method. The result of land covers measurement in class I, II and III shows that between real lands cover on field is suitable to the reported land cover in contract. The percentage of comparison between real land cover and reported land cover is 100%. This percentage shows there is no side suffered both local people and Perhutani. The result of land cover measurement in class IV is less suitable to land cover reported in contract. The percentage is 83,3%. The real lands cover on the field is wider (16,7%) than in the contract. It means the local people are suffered. There is 0% of land cover in some part of class IV. The zero land cover shows that mangrove ecosystem is in degradation and unsuccessfulness of rehabilitation. The fishpond rent-fee based on the function value of protection forest and people’s willingness to pay is higher than the rent-fee that had been determined in contract. The best rent-fee of fishpond for class I is Rp 100.170,-/ha, class II is about Rp 118.930,36/ha – Rp 137.151,64/ha, class III is about Rp 136.973,62/ha – Rp 137.151,38/ha and for class IV is about Rp 188.190,66/ha – Rp 189.095,22/ha. Based on the analysis above could be concluded that the management of mangrove-protection forest using class fishpond method make the successfulness of rehabilitation disincentive
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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