Judul: Land Use Change Analysis and Land Use Direction in Mount Merbabu National Park and its Buffer Zone
Abstrak: Mount Merbabu National Park is one of conservation area in Indonesia with ecological-overstress condition caused by population pressure. Forest land cover in that area only remains 30% and the rate of deforestion reaches 3% per year. Land use changes that occur indicate ecosystem changes that threaten the ecological function of the area. This study has four main objectives, that include the following : (1) to analyze land use changes in mount Merbabu national park and its buffer zone period of 2001-2013, (2) to analyze land suitability based on land physical properties, (3) to predict land use for the next 12 years, (4) to formulate scenarios wich can control land use changes. Primary data in this research is Landsat-7 image in 2001 and Landsat-8 image in 2013. The land use prediction model by the 2025 is Cellular Automata Markov method, that base on land suitability scenario. The results showed that there are seven main types of land use in the Mount Merbabu National Park and its buffer zone : forest, settlement, field, grass, shrub, unutilzed land and crop mix. Land use changes that occurred in the period 2001-2013 is the decline of forest, grass and crop mix, followed by the increase of shrub, settlement and field. The rate of deforestation in this period is 2,29% or 87 ha/ year . The prediction results showed that land use changes in the period of 2013-2025 has similar pattern with the 2001-2013 period. Forest decline is predicted to continue in all zones of the National Park. Settlement, field and shrub are disposed to increase, while forest, grass and crop mix are disposed to decrease. Scenarios to control land use changes in the National Park (TN) is directed to increase forest cover. There are two scenarios were formulated, first scenario assuming TN managers not allowing farming and settlement activities in the area of TN. Second scenario assuming TN managers implement zoning policies of TN Plan. The results showed that the first scenario predicted to increase forest cover and restrain deforestation.
Keyword: forest, land use, mount Merbabu, national park, prediction

Judul: Spatial Analysis of Land Use Change in Relation with The Use of Zoning Area at Gunung Halimun Salak National Park
Abstrak: Gunung Halimun Salak National Park (GHSNP) is the largest tropical rain forest ecosystem in Java. GHSNP ecosystems play an important role as watersheds protection, microclimate, wildlife conservation, research, environmental education, ecotourism and preservation of local culture. A variety of land use activities by communities that does not comply with the zoning plan of GHSNP will cause degradation of the forest ecosystem. However, its change should be monitored to control forest degradation. This study aims to: (1) analyze land use changes in the period 2000-2010, (2) analyze the factors that drive the land use changes from forest to Non-forest, (3) predict the use of land in 2026 using spatial models of land use change, (4) formulate directives refinement for land use planning GHSNP. Land use change modelling has been introduced to predict future pattern of change. CLUE-S was used to simulate land-use change based on the driving factors. The results of the analysis showed there is changes in land use in the 2000-2010 period. The most extensive land use decline is forest that decreased by 5,5%. On the other hand, the land use that extensively increase is field that rise 2,21%, rice field that rise to 1,46% and bush that increased 3,4%. The main pattern in land use change is from forest into mixed garden, field and bush. (2) According to the regression analysis, the factors that drive the land use changes from forest to Non-forest is density population. (3). Prediction result show forest landuse increased occurs in scenario 2 and 3. The landuse of a mix garden, field, paddy field and shrubs increased in the scenarios currrent conditions and scenario 1. CLUE-S model is simulated in this study has an accuracy of 88.53%. Alternatives of policy that selected based on the study for the refinement of landuse planning is forest restoration policy on core zones, jungle zones and rehabilitation zones, namely the restoration efforts of forest from mixed garden, fields, paddy field and shrubs. This policy can reduce 9.23% of the incompatibility between land use and zoning plan.
Keyword: CLUE-S, geographical information system, Gunung Halimun Salak National Park, land use change, spatial model

Judul: Reproduksi Ikan "Shirogisu" Sillago japonica (Temminck dan Schlegel) di Perairan Teluk Omura, Nagasaki, Jepang
Abstrak: Ikan S. japonica pertama kali matang gonad pada ukuran kelas panjang 185 - 198 mm dan frekuensi terbesar pada ikan jantan pada selang kelas rata-rata 220 mm (100 %) dan ikan betina pada selang kelas rata-rata 234 mm (100 %). Melalui histologi gonad ikan betina, pada TKG II terdapat sel oogonia dimana sel telur belum matang (perinucleolus) yaitu inti sel mulai membesar dan membran sel yang tebal. Pada TKG III, sel telur berkembang menjadi oocyte primer dan kemudian menjadi oocyte sekunder dimana sel telur telah matang (ripe eggs), butiran kuning telur telah terbentuk dan membran sel mulai menipis. Pada TKG IV, sel telur berkembang menjadi ootid, dimana terjadinya penyatuan butiran kuning telur yang menuju salah satu kutub anima (Fusion of yolk globule) dan terdapat membran sel yang menipis pada sel telur yang matang (Oolema of ripe eggs). Pada TKG V, sel telur berkembang menjadi ovum yang akan dikeluarkan pada saat pemijahan, mulai berkurangnya ootid dan terdapat folikel yang kosong. Sedangkan pada testes ikan jantan, TKG I ditunjukkan adanya sel spermatogonia yang berada di dalam kantung tubulus seminifer. Pada TKG I1 sel berkembang menjadi sel spermatogonia. Pada TKG III sel spermatogonia berkembang menjadi spermatocytes primer dimana terjadi pembelahan sel secara miosis (pembelahan pertama) dan kemudian berkembang menjadi spermatocytes sekunder dimana terjadi pembelahan sel yang kedua. Pada TKG IV sel spermatocytes berkembang menjadi sel spermatid, dan pada TKG V sel spermatid herkembang menjadi spermatozoa yang akan dikeluarkan pada saat pemijahan.
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