Judul: Model of intersectoral water allocation in Jatiluhur irrigation area: dynamic optimization approach
Abstrak: Rapid population growth, development of urban sprawl, and increasing food demand, have increased pressure on irrigation, domestic and industrial water demand. As such, the stock of water resources has become limited, not only in terms of quantity and quality, equity and continuity of water distribution, but also efficiency of water use. The scarcity of this resource has intensely increased intersectoral water demand, in downstream area, so that a model is needed to solve this conflicting and competing water demand problem. The objectives of this research are: (1) to conceptualize and develop a water allocation model in Jatiluhur’s dams, especially in Tarum Barat area and compare it with actual allocation which is undertaken by Perum Jasa Tirta II, (2) to evaluate the performance of technical and economic variables toward the dynamic optimum allocation, and (3) to evaluate the effect of its dynamic optimum allocation toward the reservoir’s stock of water.
Keyword: Competition, Scarce, Allocation, Water, Resevoir, Dam, Optimization, DAS Citarum, Jawa Barat, Pengelolaan Sumberdaya air

Judul: Pengembangan model alokasi air untuk mendukung optimal water sharing: Kasus DAS Cicatih-Cimandiri, kabupaten Sukabumi, Jawa Barat
Abstrak: Terjadinya peningkatan kebutuhan berbagai sektor pengguna air (rumah tangga/domestik, pertanian, dan industri) di DAS Cicatih mengakibatkan tekanan dan persaingan dalam penggunaan sumber daya air semakin tinggi. Persaingan dalam penggunaan air telah memunculkan konflik terbuka antara petani/penduduk yang telah menggunakan mata air untuk keperluan air domestiknya dan pemanfaat air yang datang kemudian, yaitu perusahaan air minum dalam kemasan (AMDK). Hasil survei sosial ekonomi menunjukkan bahwa konflik telah terjadi sejak sepuluh tahun lalu dan semakin meningkat sejak lima tahun lalu. Konflik umumnya terjadi bilamana ada pihak yang merasa haknya diambil secara tidak adil, sehingga proporsi penggunaan air oleh para pengguna perlu diketahui secara transparan.
Keyword: West Java, Optimal Water Sharing, Water supply, Water demand, Watershed, Subsurface flow, Water allocation, Surface runoff

Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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