<p>Kearifan lokal merupakan suatu nilai budaya yang tidak terlepas dari kehidupan masyarakat Indonesia dan diakui keberadaannya oleh hukum negara. Kearifan lokal yang masih berlakudi dalam kehidupan masyarakat Sumatera terkait dengan pengelolaan perikanan perairan umum daratan terdiri dari lelang lebak lebung (Sumatera Selatan), lubuk larangan (Jambi dan Sumatera Barat), rantau larangan (Riau), ma’uwo (Riau), dan upacara semah terubuk (Riau).Dari kelima kearifan lokal tersebut, lubuk larangan termasuk sistem pengelolaannya sudah menjadi salah satu kegiatan pemerintah sampai di tingkat nasional.Penguatan kearifan lokal dengan kajian ilmiah dapat menjadikan kearifan lokal sebagai bagian dari sistem pengelolaan perikanan yang efektif dan efisien berbasis masyarakat.Kajian ilmiah terhadap kearifan lokal yang berhubungan dengan pengelolaan perikanan dapat didekati dengan etnobiologi (analisis emik dan analisis etik).Selanjutnya, kearifan lokal dapat diperkuat secara hukum dan perundang-undangan yang berlaku secara nasional.</p><p><em>Local wisdom is a cultural value that can not be separated from the life of the Indonesian people and its existence is recognized by state law. Local wisdoms found in Sumatra related to inland fisheries management are lebak lebung (South Sumatra), lubuk larangan (Jambi and West Sumatra), rantau larangan (Riau), ma'uwo (Riau), and upacara semah terubuk (Riau).Lubuk larangan including its management system has become one of the government's activities to the national level. Strengthening local wisdom with scientific studies can make it is as part of effective and efficient community-based fisheries management system. Scientific studies on local wisdom related to fisheries management could be analyzed by applying ethnobiology approach (emic and etic analysis).</em></p>
Reklamasi pantai Teluk Jakarta merupakan rencana pemerintah yang ditujukan untuk mengendalikan banjir di Kota Jakarta dan pengembangan area bisnis yang tumbuh semakin pesat. Reklamasi dilaksanakan dengan membangun tanggul raksasa sepanjang 60 km di Teluk Jakarta dan pembangunan 18 pulau kecil di depan pantai. Reklamasi pantai dapat memberikan dampak terhadap lingkungan perairan dan perikanan. Dalam rangka pelaksanaan pengelolaan perikanan berkelanjutan, maka perlu dilakukan analisis dampak reklamasi terhadap kondisi kualitas air dan perikanan di teluk Jakarta. Tujuan dari penelitian ini adalah untuk menganalisis dampak reklamasi terhadap kondisi kualitas air dan perikanan melalui analisis data primer dan sekunder. Hasil penelitian menunjukkan bahwa reklamasi pantai menambah tekanan terhadap kondisi lingkungan perairan yang diindikasikan oleh penurunan kecerahan perairan, salinitas dan nilai indeks keanekaragaman fitoplankton dan makrozoobenthos. Reklamasi pantai akan menghilangkan daerah penangkapan sero, bagan tancap dan keramba kerang hijau, yang mengakibatkan terjadinya penurunan produksi ikan. Potensi penurunan produksi ikan yang akan terjadi sekitar 82,2 ton/tahun. Di sisi lain, bagian timur Teluk Jakarta mempunyai potensi sebagai daerah asuhan ikan dan udang. Reklamasi pantai akan mengganggu fungsi ekologis Teluk Jakarta sebagai daerah asuhan ikan dan udang. Reklamasi Teluk Jakarta dapat dilaksanakan dengan disertai upaya pengelolaan kawasan untuk menjaga peran dan fungsi ekologisnya.Coastal reclamation in Jakarta Bay is one of government planning as flood disaster management and business development area that has been grow very fast. A 60 km of giant sea wall and 18 small reclamation islands in Jakarta Bay will be developed. Coastal reclamation will have an impact on environment and fisheries. In the context of sustainable fisheries management, an impact analysis of coastal reclamation on water quality and fisheries are needed. Research objectives are to analyze the coastal reclamation impact on water quality and fisheries in Jakarta Bay, through primary and secondary data analysis. Results showed that coastal reclamation adds pressure to water quality indicated by decreasing the water transparency, salinity and the value of diversity index of phytoplankton and makrozoobenthos. Coastal reclamation will eliminate the fishing area of set net (stationary fishing gear), stationary lift net and green mussel trap nets, resulting in fish production loss. The potential decrease of fish production is about 82,2 ton/yr . On the other side, Jakarta Bay has a potential area of fish and shrimp nursery ground in the eastern part of the bay. Coastal reclamation will disrupt its ecological function as nursery ground. Reclamation of Jakarta Bay can be carried out along with area management to maintain its ecological role and function.
Abstract. Red tide is a common phenomenon and almost present every year in Lampung Bay. In 2012, the red tide in Lampung Bay showed a different characteristic compared to the previous ones. The research was conducted to analyze the characteristics of organisms causing the red tide and the factors affecting its occurrence. Assessments were done by identifying the dominant phytoplankton and observing the environmental condition using rapid assessment method. Seawater sampling was conducted in 15 stations in December 2012 to monitor the phytoplankton abundance, nutrient, and physical condition. The results showed that the organism dominating the phytoplankton population is Cochlodinium sp., comprising of 85.89% of the total phytoplankton suggesting it was the red tide organism in the Bay. The average abundance of this species in the stations was 2.0 x 10 4 cells/L. Choclodinium sp. was present agglomerated and distributed along the west coast of the bay. The highest concentration of the organism was found around the tip of the bay. The outbreaks of Choclodinium sp. were induced by the high concentration of nitrogen in the coastal water with N:P ratio of 35.5. Moreover, the physical condition of the coastal water strongly influenced the distribution and abundance of Cochlodinium sp. in the bay.
Labuan Bajo has a fertile aquatic ecosystem, one of them is the coral reef ecosystem. This condition happened because of the supply of nutrients that are carried through Indonesia Through Flow and the local upwelling phenomena. Various species of reef fish of various sizes have been caught in Labuan Bajo waters. In general, the type of reef fish that dominates is grouper fish catch by using handline fishing gear. Furthermore, there is damage that occurs in the coastal ecosystem causes changes in ecological functions and disrupted ecosystem benefits. In addition, pressure from overuse did not provide opportunities for resources to carry out recovery makes the condition of resource stocks threatened. This study aims to determine the parameter aspects of the population of several types of grouper fish in Labuan Bajo waters. The types of grouper studied included Plectropomus leopardus, P. maculatus, P. oligacanthus, and Variola albimarginata. Data collection was carried out by enumerators from April to August 2019 which included the daily data on the length and weight distribution of groupers. Length-frequency distribution data is analyzed by estimating fish population parameters using the Electronic Length Frequency Analysis (ELEFAN I) program which is packaged in the FAO-ICLARM Stock Assessment Tool II (FiSAT II) software. The results of the analysis showed the equation of growth parameters for Von Bartalanffy for P. leopardus is Lt = 89.06(1-e−0.24(t+0.52)); P. maculatus is Lt = 76(1-e−0.54(t+0.23)); P. oligacanthus is Lt = 72.32(1-e−0.66(t+0.19)); and V. albimarginata is Lt = 45(1-e−0.51(t+0.29)). The length at first birth of each species is Lt=0 P. leopardus = 10.45 cm, Lt=0 P. maculatus = 8.88 cm, Lt=0 P. oligacanthus = 8.52 cm, and Lt=0 V. albimarginata = 6.19 cm. Meanwhile, the exploitation rate (E) of P. leopardus, P. maculatus, P. oligacanthus, and V. albimarginata were 0.81; 0.53; 0.45; and 0.70.
Pekalongan waters, a part of the Java Sea, has potency to develop marine fisheries sector to increase regional income and community livelihoods. The fluctuation of marine fish production every year requires serious attention in planning and policy strategies for the utilization of the fishery resources. Time series fish production data can be used to predict fish production in the following years through the forecasting process. The data used in this study is fish production data from Pekalongan Fishing Port, Central Java, from January 2011 to December 2020. The method used is data exponential smoothing by comparing three exponential smoothing methods consisting of single/simple exponential smoothing, double exponential smoothing and Holt-Winters’ exponential smoothing. The criterion that used to measure the forecasting performance is the mean absolute percentage error (MAPE) value. The smaller MAPE value shows the better the forecasting result. The smallest MAPE value is obtained by finding the optimal smoothing constant value which is usually calculated using the trial and error method. However, in this study, the constant value was calculated using the add-in solver approach in Microsoft Excel. The forecasting results obtained show that forecasting using the Holt Winter Exponential Smoothing method is reasonable with a MAPE value of 37.878.
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