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"ABSTRAKFisheries resources management aimed to improve community welfare especially fishermen and to conserve the fisheries resources and its environment, to keep the capture fisheries business system sustainability efficient and profitable. Beside marketing guarantee, optimalization between fisheries resources stock and fishing effort in each of fishing area. The improvement of capture fisheries must be held based on the existing condition, i.e.: marketing in determining the priority commodity, maximum sustainable yield and fisheries resources utilization level to determine limit of fisheries resources utilization chance, fishing technology and socio-economic condition to identify the fishermen's earns and absorption of labors related to capture fisheries sector. Based on the marketing aspect analysis, it is determined that the kinds of priority commodity in Southern of West Java Province are lobster, shrimp, tuna, skip jack tuna, and layar. Hence, the potency (MSY) and fisheries resources utilization level of the priority commodity still has very large chance to improve, except lobster has large enough chance. Based on the scoring approach, combined from many technical aspects, financial aspects and social aspect and linear goal programming analysis can be concluded that the proper fishing technology in southern waters of West Java Province are: (1) Purse seine 80 unit, (2) Denish same 127 unit, (3) Lines 144 unit, (4) Gillnet 80 unit, (5) Trammel net 376 unit."

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Perairan Yogyakarta merupakan salah satu perairan Wilayah Pengelolaan Perikanan Negara Republik Indonesia (WPPNRI) 573 dengan aktivitas penangkapan ikan. Nelayan sebagai aktor utama aktivitas tersebut akan terus memanfaatkan sumber daya perikanan untuk kebutuhan hidupnya. Padahal perairan merupakan common-pool resources yang dapat menimbulkan sebuah masalah akibat adanya kegiatan penangkapan ikan. Masalah tersebut dapat berujung pada eksploitasi dan degradasi lingkungan perairan. Perairan Yogyakarta umumnya dimanfaatkan oleh komunitas nelayan di Provinsi Yogyakarta dengan pemanfaatan terbesar pada komunitas nelayan di Kabupaten Bantul. Salah satu komunitas nelayan di Kabupaten Bantul, Yogyakarta yang paling besar dan maju adalah nelayan di Pantai Depok, Desa Parangtritis. Maka dari itu, penelitian ini bertujuan untuk menganalisis pemilihan fishing grounds dan aktivitas penangkapan ikan berdasarkan jarak dari garis pantai untuk mencapai pengelolaan sumber daya perikanan yang tepat. Metode analisis yang digunakan adalah analisis keruangan dan keterkaitan hubungan yang dijelaskan secara deskriptif. Hasil penelitian menunjukkan bahwa nelayan masih sangat bergantung kepada kondisi cuaca dan perairan. Pemilihan fishing grounds hanya mencapai 10 mil dari garis pantai ketika musim berlimpah. Fishing grounds tersebut akan berubah dan cenderung mendekat ke arah garis pantai ketika memasuki musim paceklik. Pemilihan fishing grounds memiliki hubungan yang cukup erat dengan asal daerah nelayan. Nelayan pendatang dari Cilacap yang sudah terbiasa dengan aktivitas penangkapan ikan dapat memilih fishing grounds yang lebih jauh dibandingkan nelayan lokal. Untuk pola spasial penangkapan ikan, jarak fishing grounds akan mempengaruhi ukuran mesin armada. Sementara faktor penangkapan lain seperti armada (kepemilikan dan ukuran), alat tangkap, dan hasil tangkapan cenderung sama baik pada fishing grounds dekat dan jauh di Perairan Yogyakarta. Komoditas tangkapan ikan yang sama serta kondisi cuaca dan perairan diperkirakan membuat aktivitas penangkapan kurang bervariasi oleh nelayan di Pantai Depok.

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Yogyakarta waters are one of the waters in Wilayah Pengelolaan Perikanan Negara Republik Indonesia (WPPNRI) 573 with capture fisheries activity. Fisher is the main actor in fisheries activity who always uses the resources to their life necessities. Waters is a common-pool resource that can cause problems with capture fisheries activity. These problems could lead to exploitation and environmental degradation of waters. Generally, the fisher community who lived in the coastal area in Yogyakarta fishing in Yogyakarta waters. Bantul Regency becomes the biggest fishery production in 2018 than the other regency in Yogyakarta Province. One of the fishing communities in Bantul Regency, Yogyakarta that continues to grow and the most advanced in capture fisheries is the fisher at Depok Beach, Parangtritis Village. Therefore, the research conduct to analyze the fisher spatial behavior of fishing activities based on distance from the coastline to do proper fisheries management. The analytical method used was spatial analysis and quantitative descriptive. The results showed that fisher at Depok Beach still depends on the weather and water condition. Fishing grounds can reach 10 miles from the coastline on west monsoon (good season). Those fishing grounds will change and got shorter to the coastline on east monsoon (bad season). Fishing grounds choice has a relationship with the origin of the fisher. Migrant fishers from Cilacap who familiar with fishing activities choose fishing grounds more distant than a local fisher. For the spatial pattern of fishing, the fishing grounds distance will affect the size of the boat engine. While other fishing activities like a boat (ownership and size), gears, and the amount of catch fish tend to be the same both near and far fishing grounds at Yogyakarta waters. The same commodities and weather and water conditions are thought to make fishing activities less varied by fisher on Depok Beach.

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"Penelitian ini membahas pola wilayah kesuburan laut dan hubungannya dengan produksi ikan tangkap di Selatan Jawa Barat pada April hingga Juli 2010. Analisis yang digunakan dalam penelitian ini adalah analisis deskriptif dengan pendekatan keruangan yaitu melakukan interpretasi data citra satelit MODIS untuk melihat karakteristik wilayah front thermal dari sebaran suhu permukaan laut dan konsentrasi klorofil-a serta arah arus permukaan laut yang selanjutnya dilakukan penampalan untuk mendapatkan pola wilayah kesuburan laut. Hasil penelitian menunjukkan bahwa pola wilayah kesuburan laut di daerah penelitian yaitu semakin ke lautan lepas yaitu Samudera Indonesia tingkat kesuburannya menurun. Sedangkan produksi ikan tangkap tidak mengikuti pola wilayah kesuburan lautnya.

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The objective of this research is to describe the pattern of sea water fertility and the relationship to the production of fishing ground in the Southern of West Java on April until July 2010. The method used in this research is descriptive analysis with spatial approach using interpretation satellite imagery data of MODIS to find out sea surface temperature distribution, chlorophyll-a concentration, sea surface current, and then used overlay technique to find the pattern of sea water fertility. The result of this research showed that the pattern of sea water fertility decline toward the Indonesian Ocean, while fishing ground production did not follow the pattern of sea water fertility."

"Produksi ikan cakalang di PPN Palabuhanratu mencapai 34,92, tuna mata besar 30,66 , madidihang 26,74 dan albakora 7,66. Tujuan penelitian untuk menganalisis pengaruh klorofil-a dan SPL terhadap hasil tangkapan cakalang dan mengidentifikasi daerah potensial penangkapan cakalang di perairan Barat daya Palabuhanratu. Lokasi penelitian pada koordinat 06o 30,0 39; S - 07o 40,0 39; S dan bujur 105o 00 39;,0 T - 107o 00,0 39; T. Data yang digunakan citra SPL dan klorofil-a dari satelit Aqua MODIS melalui software SeaDAS, kemudian data CPUE cakalang dari PPN Palabuhanratu 2005-2011. Analisis data menggunakan regresi berganda. Hasil penelitian menunjukan sebaran SPL di perairan barat daya Palabuhanratu antara 23,81oC -29,40°C, rata-rata 27,70°C dengan suhu optimum 27,27 -29,35°C. Konsentrasi bulanan klorofil-a antara 0,001 mg/m3 - 4,835 mg/m3, rata-rata 0,623 mg/m3 dan optimum 0,190 - 0,648 mg/m3. Hasil regresi berganda menunjukan hubungan SPL dan klorofil-a terhadap CPUE cakalang positif 19,5 artinya sangat lemah. Variabel SPL dan klorofil-a secara parsial dan simultan tidak mempengaruhi CPUE cakalang hanya 3,80. Peta daerah penangkapan ikan cakalang potensial berdasarkan parameter SPL dan klorofil-a terjadi pada musim peralihan Barat ke Timur April-Mei hingga pertengahan musim Timur Juni-Juli dan puncaknya terjadi bulan Mei. Secara spasial daerah penangkapan potensial cakalang berada di mulut Teluk Palabuhanratu, selatan Ujung genteng dan tenggara Tanjung Sodong.

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Production of skipjack in Palabuhanratu fishing port reached 34.92 , 30.66 bigeye tuna, yellowfin tuna 26.74 and Albakora 7.66. The research objective analyzed the influence of chlorophyll a and SPL to skipjack CPUE and identify of potential fishing ground mapping of skipjack in the southwestern Palabuhanratu waters. Latitude position at 06o 30.0 39 S 07o 40.0 39 S and longitude 105o 00 39, 0 T 107o 00.0 39 T. Data were used in the SPL and chlorophyll a from MODIS Aqua satellite through SeaDAS software, then skipjack CPUE data from Palabuhanratu 2005 2011 . Analysis of data using multiple regression.

The results showed the distribution of SPL in southwest Palabuhanratu waters between 23,81°C 29,40°C, average 27,70°C with optimum temperature 27,27 29,35oC. Monthly chlorophyll a concentration of between 0.001 mg m3 4.835 mg m3, an average of 0.623 mg m3 and optimum 0.190 to 0.648 mg m3. The results of multiple regression analysis shows the relationship SPL and chlorophyll a of skipjack CPUE 19.5 means that very low. Variable SPL and chlorophyll a partial and simultan does not influence to skipjack CPUE only 3.80.

Potential fishing ground mapping based on parameters of the SPL and chlorophyll a transition the west to the east season April May to middle east season June July and the peak occurred in May. Spatially potential skipjack fishing ground at the mouth of the Palabuhanratu bay, southern of Ujung genteng and southeast of Tanjung Sodong."

"ABSTRAKIndonesia mempunyai sumber panas bumi yang besar namun terletak di perbukitan dan lereng gunung sehingga rawan terhadap longsor, salah satunya adalah lapangan panas bumi X, Provinsi Jawa Barat. Tujuan penelitian ini adalah menganalisis tingkat risiko longsor yang ditinjau dari tingkat ancaman, kerentanan dan kapasitas serta memberikan alternatif upaya mitigasi bencana melalui penataan ruang. Metode penelitian ini adalah penilaian tingkat risiko dengan pembobotan dan skoring, kemudian sebaran spasial diinterpretasikan kedalam peta. Hasil penelitian menunjukkan bahwa sebesar 57 wilayah studi berada pada tingkat risiko longsor sedang atau seluas luas 3.783,2 ha, hal ini disebabkan oleh sebagian besar wilayah studi berada pada tingkat ancaman longsor menengah, tingkat kerentanan tinggi dan tingkat kapasitas sedang. Alternatif upaya mitigasi untuk menjaga keberlanjutan pemanfaatan energi panas bumi ditinjau dari tiga aspek yaitu keberlanjutan ekologi, produksi panas bumi, dan sosial kemudian disusun penataan pola ruang yang dibagi menjadi tiga zona yaitu zona inti, zona penyangga dan zona pengembangan.

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ABSTRACTIndonesia has huge sources of geothermal which are located in mountain hills and slopes, it makes Indonesia prone to landslide. One of the geothermal sources can be found in X geothermal field, West Java Province. The aims of this study are to analysis the risk level of landslide reviewed by the hazard level, vulnerability and capacity and to provide an alternative form of disaster mitigation efforts through the spatial planning. The methods of this research are the assessment of the level of risk by weighting and scoring, then spatial distributions are interpreted into a map. The result of the study shows that 57 or 3.783,2 ha area of the study is in the medium risk level of landslide. It is because most area of the study is in medium risk level with high level vulnerability and medium level capacity. The alternative mitigation effort to keep the sustainability of geothermal energy consumption are reviewed in three aspects which are environmental sustainability, the production of geothermal, and social patterns that are divided into three zones core zone, buffer zone, and transition zone."