To see the other types of publications on this topic, follow the link: Alternative fishing technique.
Journal articles on the topic 'Alternative fishing technique'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Alternative fishing technique.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Soetaert, Maarten, Annemie Decostere, Hans Polet, Bart Verschueren, and Koen Chiers. "Electrotrawling: a promising alternative fishing technique warranting further exploration." Fish and Fisheries 16, no. 1 (July 5, 2013): 104–24. http://dx.doi.org/10.1111/faf.12047.
Full text
2
Haasnoot, Tim, Marloes Kraan, and Simon R. Bush. "Fishing gear transitions: lessons from the Dutch flatfish pulse trawl." ICES Journal of Marine Science 73, no. 4 (February 1, 2016): 1235–43. http://dx.doi.org/10.1093/icesjms/fsw002.
Full textAbstract:
Abstract This paper focuses on the transition in the Dutch cutter fleet-targeting flatfish, from the conventional beam trawl to the pulse trawl fishing gear. In doing so, we explore the process of gear transition, presenting the challenges that fishers and policy-makers face. The pulse trawl technique represents a particularly controversial gear transition as it makes use of electricity, which has been banned by the European Union since 1988. However, it is seen by those developing it in the Netherlands as an important alternative fishing gear to the conventional beam trawl technique, which is becoming increasingly inefficient with rising fuel prices and well-documented impact on benthic habitats. By using a multi-level perspective on socio-technical transitions as the analytical framework, we explore the development of the pulse trawl and the interaction between different levels. We also discuss the influence of technology-push on its transition into practice and regulation. This paper demonstrates the importance of social dimensions in the adoption of new fishing gears and in doing so contributes to our knowledge on how technological transitions in fisheries can be managed.
3
Adiyanto, F., A. D. P. Fitri, and A. Ghofar. "The strategy of Small-scale fisheries management in Cilacap Regency Waters." Ecology, Environment and Conservation 28, no. 08 (2022): S478—S485. http://dx.doi.org/10.53550/eec.2022.v28i08s.072.
Full textAbstract:
Management of small-scale fisheries resources is more likely to be oriented towards economic growth by overexploiting fishery resources without paying attention to sustainability aspects. The number of smallscale fishing fleets tends to increase, resulting in over-exploitation in coastal areas. The purpose of this study is to develop alternative strategies for small-scale capture fisheries management in Cilacap Regency. Collecting data using survey methods and interviews with key informants. Sampling was done by purposive sampling technique. Data were analyzed using the AWOT method, namely the SWOT method combined with AHP. The results showed that the IFAS matrix value is 3.17 (strength = 2.211 and weakness is 0.715) the total value of EFAS is 2.926 (opportunity = 2.211 and threat = 0.715). The choice of strategy is in quadrant IV (growth and constructive conditions). Strategic priorities that can be taken include, increase productivity with environmentally friendly fishing gear, optimize fishing facilities and infrastructure assistance, strengthen the role of fishermen’s organizations or groups, increase human resource capacity through training and empowerment programs for fishermen and capital assistance for fishing business development.
4
Reis-Filho, José Amorim, and Tommaso Giarrizzo. "Drone Surveys Are More Efficient and Cost Effective Than Ground- and Boat-Based Surveys for the Inspection of Fishing Fleet at Harbors." Coasts 2, no. 4 (December 16, 2022): 355–68. http://dx.doi.org/10.3390/coasts2040018.
Full textAbstract:
Generating accurate estimates of the number of vessels in fishing ports using traditional methods (i.e., ground- and boat-based) can be challenging as observations are distorted by an horizontal perspective. Automated inspection using drones is an emerging research alternative for this type of investigation. However, the drone-based and ground- and boat-based survey methods have not been quantitatively compared for small-scale and commercial fishing fleets in their ports. The objective of this study was to determine the number of fishing vessels and detect onboard fishing gear using three independent sources of data along 41 ports across the Brazilian coastline. Proved by statistical significance, the drone-derived vessel counts revealed 17.9% and 26.6% more fishing vessels than ground- and boat-based surveys, respectively. These differences were further highlighted during the assessment of ports without a ground walkway, causing difficulty, especially for ground-based surveys. Considerable numbers and types of onboard fishing gear were detected using the drone survey, that could not be detected using the ground- and boat-based methods. Although the ground-based survey was associated with a lower cost in comparison with other methods, the drone-based survey required the least time to record fishing fleet features in study ports. Our findings demonstrate that drone surveys can improve the detection and precision of counts for fishing vessels and fishing gear in ports. Further, the magnitude of the discrepancies among the three methods highlights the need for employing drone surveys as a considerable time-reducing approach, and a cost-effective technique for fishery studies.
5
Chen, Junde, Min Li, Ruizao Yi, Kaikai Bai, Guangyu Wang, Ran Tan, Shanshan Sun, and Nuohua Xu. "Electrodialysis Extraction of Pufferfish Skin (Takifugu flavidus): A Promising Source of Collagen." Marine Drugs 17, no. 1 (January 4, 2019): 25. http://dx.doi.org/10.3390/md17010025.
Full textAbstract:
Collagen is widely used in drugs, biomaterials, foods, and cosmetics. By-products of the fishing industry are rich sources of collagen, which can be used as an alternative to collagen traditionally harvested from land mammals. However, commercial applications of fish-based collagen are limited by the low efficiency, low productivity, and low sustainability of the extraction process. This study applied a new technique (electrodialysis) for the extraction of Takifugu flavidus skin collagen. We found electrodialysis to have better economic and environmental outcomes than traditional dialysis as it significantly reduced the purification time and wastewater (~95%) while maintaining high extraction yield (67.3 ± 1.3 g/100 g dry weight, p < 0.05). SDS-PAGE, amino acid composition analysis, and spectrophotometric characterization indicated that electrodialysis treatment retained the physicochemical properties of T. flavidus collagen. Heavy metals and tetrodotoxin analyses indicated the safety of T. flavidus collagen. Notably, the collagen had similar thermal stability to calf skin collagen, with the maximum transition temperature and denaturation temperature of 41.8 ± 0.35 and 28.4 ± 2.5 °C, respectively. All evidence suggests that electrodialysis is a promising technique for extracting collagen in the fishing industry and that T. flavidus skin collagen could serve as an alternative source of collagen to meet the increasing demand from consumers.
6
Syaukani, Marwan, Muhammad Fedi Alfiadi Sondita, Daniel Monintja, Akhmad Fauzi, and Victor Petrus Hiliary Nikijuluw. "KLASIFIKASI SENTRA INDUSTRI PERIKANAN BERBASIS PELABUHAN PERIKANAN: KASUS DI KABUPATEN BELITUNG." Jurnal Kebijakan Perikanan Indonesia 2, no. 1 (February 3, 2017): 1. http://dx.doi.org/10.15578/jkpi.2.1.2010.1-14.
Full textAbstract:
Klasifikasi pelabuhan perikanan Indonesia yang terdiri atas PelabuhanPerikanan Samudera, Pelabuhan Perikanan Nusantara, Pelabuhan PerikananPantai, dan Pusat Pendaratan Ikan. Klasifikasi tersebut di atas didasari hubungan inti plasma di mana pelabuhan perikanan yang besar ditunjang beberapa pelabuhan perikanan yang lebih kecil (Direktorat Jenderal Perikanan Tangkap, 2008). Hubungan inti plasma tersebut tidak berjalan karena tidak mempunyai pola hubungan yang jelas. Oleh sebab itu diperlukan alternatif klasifikasi pelabuhan perikanan dengan memasukan unsur jaringan industri seperti yang diusulkan oleh Israel & Rouqe (2000) yang mengklasifikasikan pelabuhan perikanan menjadi tiga yaitu penyedia jasa utama, penyedia jasa antara (server), dan client. Penelitian ini bertujuan menentukan klasifikasi sentra industri perikanan berbasis pelabuhan perikanan dalam jaringan industri yang efektifdan efisien dilakukan di Kabupaten Belitung selama 11 bulan sejak Oktober 2007 sampai Agustus 2008. Metode yang dipergunakan adalah multi criteria analysis yang dilanjutkan dengan analisis technique for order preference by similarity to ideal solution. Parameter yang diukur meliputi infrastruktur pelabuhan perikanan, kapasitas kapal perikanan, kemandirian faktor input, dan produksi. Hasil penelitian menunjukan bahwa Pulau Belitung berperan sebagai penyedia jasa utama, Pulau Mendanau, dan Pulau Seliu berperan sebagai penyedia jasa antara (server), dan Pulau Gersik dan Pulau Sumedang berperan sebagai client.Klasifikasi pelabuhan perikanan dalam suatu jaringan industri berimplikasi pada peningkatan efektivitas dan efisiensi pembangunan pelabuhan perikanan tangkap sebagai sentra industri perikanan tangkap.Indonesian government classify fishing port into 4 categories namely Ocean Fishing Port, National Fishing Port, Sea Shore Fishing Port, and Fish Landing Fishing Port. The above classification based on partnership or lingkage industry among fishing ports. However, the lingkage industry do not run effectively due to unappropriate pattern. Improving the condition, Israel & Roque (2000) suggested to classify fishing port into 3 categories namely main service provider, intermediate service provider or server, and client. This paper describes an alternative formula that considers industrial linkage among fishing ports as fishing industrial centers. The research was held on Belitung Regency as long as 11 months from October 2007 to August 2008. There are several factors should be considered in building fishing port namely fishing facilities, fishing capacity, input dependency and fish landing capacity. The 4 factors are analyzed by multi criteria analysis then continued by technique for order preference by similarity to ideal solution analysis. The research concludes that the Belitung is as the main service provider, the Mendanau Island and Seliu Islands are as the intermediate service provider or server, the other 2 islands are as the client. The new classification will increase effectiveness and efficiency of fishing port developments.
7
Martins, Viviane S., Francisco José Bezerra Souto, and Alexandre Schiavetti. "Conexões entre pescadores e polvos na comunidade de Coroa Vermelha, Santa Cruz Cabrália, Bahia." SITIENTIBUS série Ciências Biológicas 11, no. 2 (March 27, 2012): 121. http://dx.doi.org/10.13102/scb69.
Full textAbstract:
Coral reefs are one of the most diverse ecosystems in the world and apart from carrying out important ecologicalfunctions, they have an important socioeconomic role because they are source of income and livelihoods for severalcommunities. Coroa Vermelha, is a district of Santa Cruz Cabrália, State of Bahia, and, together with the northern portionof Porto Seguro, it comprises the Coroa Vermelha APA (Environmental Protection Area). The artisanal fishing of octopusstill plays an important role for the local population, although tourism is a more promising alternative. This study coversthe behaviour of the octopus fishermen from Coroa Vermelha relating to their catch, other elements of the ecosystem, andpossible conservation implications, following a broad ethnoecological approach. Non-structured interviews, followed bysemi-structured and structured interviews, with randomly selected octopus fishermen and with “native specialists”, werecarried out. The semi-structured interviews were recorded and transcribed verbatim. The technique of direct observation,when fishermen were accompanied during the fishing, was also used. Twenty fishermen were interviewed; eight of whomwere considered “native specialists”. Two techniques of capture were reported, the catching of octopus over the reef andthrough diving, and five sampling points were cited as the most frequently fished by the local octopus fishermen. Amongstthe proposed interactions, that of human/plant interactions was found to be the weakest and that of human/animal thestrongest when fishing for octopus.
8
Norris, James G. "Further Perspectives on Yield per Recruit Analysis and Biological Reference Points." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 12 (December 1, 1991): 2533–42. http://dx.doi.org/10.1139/f91-294.
Full textAbstract:
Spawner–recruit relationships (SRRs) are indeterminate for most species. Earlier workers proposed solving "amount of harvest" problems for such cases by tacitly assuming that the SRR is density independent (a straight line through the origin) for the available data. I extend that concept and demonstrate a technique for solving "method of harvest" problems when the SRR is indeterminate. This technique uses spawning biomass per recruit, rather than fishing effort, as the benchmark for comparing alternative methods of harvest. Yields from different harvesting methods are deemed comparable only when they produce the same spawning biomass per recruit. If the comparisons are consistent over the entire range of spawning biomass per recruit values, one can evaluate the relative merits of competing methods of harvest without the benefit of spawner–recruit data. Although this technique does not determine the optimal gear selectivity, it allows comparisons of sustainable yields from currently available gear types. The technique is particularly useful for analyzing fishery allocation and by-catch problems. Two life history parameters, critical age (age at which a cohort maximizes its biomass or dollar value) and the age at 50% sexual maturity, may be most important in determining the optimal method of harvest (fishing gear selectivity).
9
A. Mousa, Mohammed. "Tensile Behavior of Alternative Reinforcing Materials as Fiber Reinforced Cementitious Mortar FRCM." International Journal of Engineering & Technology 7, no. 4.20 (November 28, 2018): 239. http://dx.doi.org/10.14419/ijet.v7i4.20.25933.
Full textAbstract:
The adoption of new reinforcing and retrofitting materials provide an alternative and affordable techniques that can be utilized in low-income communities. FRCM is comprised of a broad spectrum family of reinforcing materials such that it allowed utilizing affordable local alternatives such as fishing net FN and welded wire steel mesh WWSM. The composite effectiveness stems from the compatible inorganic matrix properties which have similar properties to the substrate unlike other composites such as FRP. The tensile response of FN and WWSM and their mortar composites has been experimentally studied to characterize their strength, deformation, and the bonding between the reinforcement and the mortar. Experimental investigations on dog-bone composites specimens with their materials samples subjected to uniaxial tensile load were performed. The experimental campaign included testing 12 composite specimens taking into account multiple parameters like material, thread thickness, and the layer effect. The results show comparable strengths and high deformation capacity (12.5 times) of FN to the WWSM. Finally, the SEM imaging shows a well-impregnation between the mortar and the reinforcement of both materials. The tensile response of the composite emphasizes its potential as structural retrofitting and hazard mitigation technique for local builders and house owners in developing countries.
10
Hiariey, Johanis, and Mulyono Sumitro Baskoro. "KAPASITAS PERIKANAN PELAGIS KECIL DI WILAYAH PENGELOLAAN PERIKANAN-714 LAUT BANDA MALUKU." Jurnal Kebijakan Perikanan Indonesia 2, no. 1 (February 3, 2017): 43. http://dx.doi.org/10.15578/jkpi.2.1.2010.43-56.
Full textAbstract:
Kapasitas penangkapan berlebih merupakan suatu masalah kritis padaperikanan tangkap. Berkaitan dengan isu kapasitas tersebut, kajian ini dilakukan untuk menentukan kapasitas penangkapan ikan pelagis kecil di wilayah pengelolaan perikanan-714 Laut Banda, dengan menggunakan data runtun waktu periode tahun 1985-2006 yang dianalisis dengan teknik data envelopment analysis. Terdapat indikasi excess capacity pada perikanan pelagis kecil, dan pada periode tahun 1989-1998 kondisi perikanan menunjukan over capacity. Dengan demikian, dibutuhkan alternatif kebijakan pengelolaan perikanan untuk mengurangi input penangkapan pada perikanan di wilayah pengelolaan perikanan-714 Laut Banda.Excessive fishing capacity is a critical problem in marine capture fisheries. In line with the capacity issue, this study was conducted to determine fishing capacity of the small pelagic fishery at fishery management area-714 Banda Sea using time series data of 1985-2006 analyzed using technique of data envelopment analysis. There was indication of excess capacity on the small pelagic fishery, and the fishery in the period of 1989-1998 was found to be over capacity. Therefore, alternative fishery management policies were needed to reduce fishing inputs from the fishery of the fishery management area-714 Banda Sea.
11
Amris, Ainun Ayu Utami, Sri Wahyuni Rahim, and Khusnul Yaqin. "Effectiveness of clove oil as anesthesia of Sergeant Major Abudefduf vaigiensis (Quoy & Gaimard, 1825)." Akuatikisle: Jurnal Akuakultur, Pesisir dan Pulau-Pulau Kecil 4, no. 1 (May 31, 2020): 21. http://dx.doi.org/10.29239/j.akuatikisle.4.1.21-28.
Full textAbstract:
The increasing demand for live ornamental fish for export needs triggers fishermen to start looking for alternative fishing techniques that are more effective and efficient. The technique commonly used is the anesthetic technique using potassium cyanide. The use of cyanide has been banned by the government because of the many impacts it has caused such as the degradation of coral reef ecosystems, high non-target fish mortality and pollution of coastal areas. Clove oil is an alternative anesthetic which can be utilized with many advantages compared to cyanide. The sampled fish used was sergeant major (Abudefduf vaigiensis) as many as 15 fish with a size of 9-12 cm obtained from fishermen's catch using a scoop. The purpose of this study was to determine the optimal concentration of clove oil as an anesthetic of Sergeant Major Fish (Abudefduf vaigiensis) based on induction time and recovery time. The experimental design used was a Completely Randomized Design (CRD). Analysis of the data used is One-Way ANOVA parametric analysis and Kruskal Wallis nonparametric analysis. The results obtained are five series of concentrations (20 ppm, 30 ppm, 40 ppm, 50 ppm, 60 ppm) which have a significant effect on induction time (20 ppm and 60 ppm) of sergeant major fish (Abudefduf vaigiensis) (P<0.05) The treatment of five concentration series (20 ppm, 30 ppm, 40 ppm, 50 ppm, 60 ppm) did not have a significant effect on the recovery time of the Sergeant Major Fish (Abudefduf vaigiensis) (P>0.05).
12
Fitriansyah, P., Darwis, V. Amrifo, and T. Ramadona. "Mitigation Strategy for Fishermen’s Households as a Result of Covid-19 Pandemic Social Engineering in Sungai Kayu Ara Village." IOP Conference Series: Earth and Environmental Science 934, no. 1 (November 1, 2021): 012043. http://dx.doi.org/10.1088/1755-1315/934/1/012043.
Full textAbstract:
Abstract Covid-19 had a major impact on people’s lives, including the fishing community. Mitigation strategies are needed in order to reduce the impact of Covid-19. This research was conducted in March 2021 at Sungai Kayu Village. This village is one of the coastal villages located in Sungai Apit District, Siak Regency, Riau Province. The purpose of this study is to identify structural and non-structural mitigation and analyze the mitigation strategies carried out by fishing households in Sungai Kayu Ara Village. The method used in this study using the Survey Method. The population was fishing households totaling 48 households. The technique of determining the respondents is by census, which takes all the population as respondents. Data was collected by means of observation, in-depth interviews, documentation, literature studies, and online searching of data and information. The data that used: qualitative descriptive analysis and Analytical Hierarchy Process (AHP). Structural and non-structural Covid-19 mitigation in Sungai Kayu Ara Village, Sungai Apit District, Siak Regency is more focused on implementing government policies stipulated by the Regent’s regulation on handling infectious diseases and the Regent’s regulation on the application of administrative sanctions for the enforcement of health protocols in handling infectious diseases. Mitigation strategies for fishermen households in Sungai Kayu Ara Village, Sungai Apit District, Siak Regency due to the main social engineering of the covid-19 pandemic are: Selling fish caught by fishermen online, receiving protection fund and empowering fishermen, owning a plantation business (alternative business), receiving social assistance and have saving and emergency fund.
13
Wibawa, P. A., R. W. Birmingham, and I. D. A. A. Warmadewanthi. "Comparing Life Cycle Assessment of Fish Preservation Method on Fishing Vessels in Indonesia." IOP Conference Series: Earth and Environmental Science 1095, no. 1 (October 1, 2022): 012017. http://dx.doi.org/10.1088/1755-1315/1095/1/012017.
Full textAbstract:
Abstract The economic benefit that the fishermen can obtain primarily depends on the quality of their catches. Therefore, it is essential to ensure that the caught fish stays fresh until entering the market. The most common fish preservation on traditional fishing boats in Indonesia is block ice, which must be carried in the fish hold from the home port. In comparison, another alternative method for fish preservation is the Flake Ice machine that can produce ice on-board. The study on Life Cycle Assessment (LCA) was conducted on these two fish preservation methods to understand the environmental impact of each technique. For undertaking the assessments, LCA software known as SimaPro was employed. The system boundary for the LCA about fish preservation applied the “well to wheels” approach and covered the whole service life of the vessel for the full consecutive 20 years of operation. The functional unit for the assessment was fish preservation of 4 tonnes during a 7-day fishing trip. The input of the evaluation was the materials and energy required to produce the amount of ice or to operate a refrigeration system for each year of the vessel’s operation, with a total of 30 trips per year. The paper explored the environmental impact of these two fish preservation methods in terms of Ozone Layer Depletion and Global Warming.
14
Hufiadi, Hufiadi, Mahiswara Mahiswara, and Tri Wahyu Budiarti. "Tingkat Efisiensi Kapasitas Perikanan Pukat Cincin di Banda Aceh." Jurnal Penelitian Perikanan Indonesia 17, no. 3 (January 30, 2017): 169. http://dx.doi.org/10.15578/jppi.17.3.2011.169-175.
Full textAbstract:
Akhir-akhir ini, penangkapan berlebih merupakan masalah yang dihadapi dalam pengelolaan perikanan di Indonesia. Kajian pengelolaan perikanan berbasis kapasitas penangkapan merupakan alternatif pendekatan guna mengendalikan faktor-faktor input yang tidak efisien yang digunakan dalam usaha penangkapan. Tujuan penelitian ini adalah mengukur tingkat efisiensi teknis dan pemanfaatan kapasitas alat tangkap pukat cincin di Banda Aceh. Efisiensi penangkapan dan pemanfaatan kapasitas dari pukat cincin yang dikaji dianalisis dengan menggunakan teknik data envelopment analysis (DEA). Data dianalisis menggunakan program linear (linier programming) dengan bantuan software DEAP version 2.1 kemudian pengolahan data dilanjutkan menggunakan program Microsoft Excel version 2007. Hasil penelitian menunjukkan bahwa beberapa armada purse seine di Banda Aceh telah melebihi nilai optimumnya atau telah terjadi kelebihan kapasitas pemanfaatannya. Untuk mencapai nilai optimumnya nelayan pukat cincin perlu mengurangi input yang digunakan. Management of fishing capacity following the method of measurement has become an important issue of excess capacity and overfishing that serious problem faced in Indonesia fisheries management. Assessment-based fisheries management capacity of the catch is an alternative approach to control the input factors that are not efficiently used in fishing effort. The purpose of this study is to measure the level of technical efficiency and capacity utilization of purse seine Banda Aceh. Capture efficiency and capacity utilization of purse seine were analyzed by using the technique of data envelopment analysis (DEA). Data was analyzed using linear programming the software DEAP version 2.1 and then the analysis was continued using Microsoft Excel version 2007. The results showed that purse seine in Banda Aceh exceed the optimum value or excess fishing capacity so that to achieve the optimum level of the purse seine fishers, the inputs used should be reduced.
15
Perevaryukha, A. Yu. "ON THE TECHNIQUE OF MODELING ONTOGENETIC CHANGES IN FISH AND INSECTS LIFECYCLE." «System analysis and applied information science», no. 1 (May 4, 2017): 12–23. http://dx.doi.org/10.21122/2309-4923-2017-1-12-23.
Full textAbstract:
The article discusses the approach to modeling of metamorphoses in the development of a number of species in the context of their influence on the success of long-term trends of population dynamics. Changes in survival during early ontogenesis, controlled by important factor – the rate of individual development in a competing group of individuals, can cause unexpected degradation of population with a small excess fishing impact. The theory of nonlinear efficiency of reproduction leads us to the hypothesis that two different nonlinear effects are controlled by similar mechanisms. For insects such fluctuations in survival during metamorphosis can start another process - the rapid outbreak of pests, where actual formalization of the impact of parasites on the first stage of development, depending on the initial concentration of clutches, but limited resources is taken into account at a finishing. The method has been for submission to decline of generations on the basis of dynamic overriding differential equations with discrete-continuous structure of time. To extend the previously proposed model for the formation of generations is formed computing structure for the account mortality depending on the level of competition, complete with trigger functional and a new scheme describing the changes the growth rate for the example of the Caspian Sea sturgeon in three ecological and physiological stages of development. The new model has a non-trivial possibilities parametrically modification of behavior regimes. The coexistence of alternative cycles is explained by the increase in adaptive interspecies differences.
16
Tuwu, Darmin, Supriyono, and Muhammad Arsyad. "Farmer Adaptation Strategy to Their Environment in the Village of Makoro Binongko Wakatobi." Indonesian Journal of Social and Environmental Issues (IJSEI) 2, no. 1 (April 13, 2021): 7–13. http://dx.doi.org/10.47540/ijsei.v2i1.66.
Full textAbstract:
This study aims to determine the adaptation strategies of farmers to their environment in Makoro Village, Binongko District, Wakatobi Regency. This research is qualitative research with the technique of determining informants by purposive sampling. Data collection techniques through observation, in-depth interviews, and documentation. Analysis techniques are the data collected selectively separated, processing by editing process and analyzing the data that has been obtained descriptively. The results showed that the farmers' adaptation strategy to their environment was carried out through First, the strategy of tying the belt tighter or the strategy of self-limiting, ie the farmers did a strategy by eating once a day; Second, alternative subsistence strategies, where farmers and farmer families do odd jobs or become casual workers, such as fishing, digging wells, helping people package ice cubes for fish sent to Bau-Bau City, burning charcoal after it is sold to blacksmiths, selling wood, taking stones and sand, and making machetes and knives for sale; and Third, the strategy to build relationships, where farmers build a lot of networks with institutions outside the family environment. If they are in trouble then this network can be used to overcome various existing problems such as building relationships with relatives, village friends, or influential people in the village.
17
Suprianto, S., and Tedy Sukriadinata Saputra. "STRATEGI PENGEMBANGAN EKOWISATA BAHARI DI KABUPATEN SUMBAWA (Studi Pada Obyek Wisata Pantai Prajak Kabupaten Sumbawa)." Jurnal Ekonomi & Bisnis 11, no. 1 (May 2, 2023): 20–29. http://dx.doi.org/10.58406/jeb.v11i1.1150.
Full textAbstract:
This study aims to analyze the strategy for developing marine ecotourism in Sumbawa Regency. This research is a descriptive research conducted to examine the strategy for developing marine ecotourism at the Prajak Beach tourism object, Sumbawa Regency. The type of data used is qualitative data in the form of interviews with research informants obtained directly from the original source. Data analysis in this study used the SWOT analysis technique to formulate various alternative strategies in developing marine ecotourism at the Prajak Beach tourist attraction, Sumbawa Regency. This analysis is based on logic that can maximize strengths and opportunities, but simultaneously minimize weaknesses and threats. The results of this study indicate that the SWOT analysis in developing marine ecotourism at the Prajak Beach tourism object in Sumbawa Regency produces four alternative strategies, namely SO strategy, WO strategy, ST strategy and WT strategy. The resulting alternative development strategy is to maintain and develop the potential of marine ecosystems found in marine ecotourism at Prajak Beach through water or sea conservation education, adding facilities and infrastructure to support tourism, participating in various training programs to improve the quality of managing human resources, optimizing utilization of various information media to introduce tourism objects to the public, increase public awareness in protecting marine ecosystems to prevent illegal fishing or other actions that can damage marine ecosystems.
18
Sanjoto, Tjaturahono Budi, Hana Anggita Sari, and Puji Hardati. "Fishermen Adaptation to Climate Change in Mertasinga Village, Gunungjati Sub-District, Cirebon Regency." International Journal of Sustainable Development and Planning 16, no. 5 (September 30, 2021): 869–74. http://dx.doi.org/10.18280/ijsdp.160507.
Full textAbstract:
This study aims to determine the adaptation carried out by the fishermen of Mertasinga Village in facing climate change. The population of the study was 2,025 fishermen in Mertasinga Village, and a sample of 102 fishermen was taken using a proportional random sampling technique. Data were collected using observation, interviews, and documentation. Data were analyzed using the interactive analysis model from Miles and Huberman. Based on the results of the analysis, it can be concluded that climate change has an impact on fishing activities that require fishermen to adapt. In fact, they have adapted to climate change even though the used technology is still quite minimal; fishermen have not developed a ship, have not used weather information and maps of fish catchment areas from the BMKG, and have not used fish tracking devices. Carrying out continuous socialization, strengthening social capital and organizational capacity, and holding various trainings concerning on alternative livelihood are greatly essential to do.
19
Perera, J. A. R. M., P. A. D. A. N. Appuhamy, and E. M. P. Ekanayake. "Prediction of Tidal Elevations at Eastern and Western Coastal Areas of Sri Lanka with Short-term Data." Sri Lankan Journal of Applied Statistics 24, no. 2 (September 30, 2023): 76–94. http://dx.doi.org/10.4038/sljastats.v24i2.8098.
Full textAbstract:
Prediction of tidal heights are increasingly beneficial for multitude of ocean functions such as port development, fishing industry, and safe movement of ships. As the general harmonic technique always needed great volumes of data for predicting tidal heights, Artificial Neural Networks (ANNs) emerged as a viable alternative for addressing diverse problems in the coastal engineering sector in recent decades. However, there has been no previous research to distinguish Harmonic Analysis from ANN models for predicting tidal heights around Sri Lanka by overcoming the rampant issue of data scarcity, which is the focus of the present study. Hourly tidal heights recorded in the Western (Colombo) and Eastern (Trincomalee) coastal areas of Sri Lanka were used in modelling. As tidal elevation is periodic in nature, it was expressed as Fourier Series with its coefficients (constituents) being determined by Harmonic Analysis, while the ANN technique employed the back-propagation procedure to forecast tidal heights. Harmonic Analysis displayed lesser prediction performance even with five months of data at Colombo (MSE=0.030 and MAPE=1.875) and Trincomalee (MSE=0.019 and MAPE=1.052), in contrast to the ANN models with only 7 days of data, which has much lower MSE and MAPE at Colombo (0.006 and 0.096) and (0.003 and 0.052) at Trincomalee respectively. Thus, the ANN model outperformed the Harmonic Analysis in terms of both accuracy and flexibility. Overall, this study demonstrated the potential of ANN modeling as a reliable, economical, and efficient alternative for predicting tidal heights to circumvent the dearth of tidal data on the coastal Sri Lanka.
20
Heppell, Scott A., and Craig V. Sullivan. "Identification of gender and reproductive maturity in the absence of gonads: muscle tissue levels of sex steroids and vitellogenin in gag (Mycteroperca microlepis)." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 1 (January 1, 2000): 148–59. http://dx.doi.org/10.1139/f99-188.
Full textAbstract:
Gag (Mycteroperca microlepis) are often landed eviscerated, so their gonads are not available for histological verification of gender and stage of maturity. Information on gender is particularly important for the management of hermaphroditic grouper, where increased mortality through fishing can directly affect sex ratio and therefore the reproductive capacity of the population. Alternative techniques for evaluating fish gender and maturity therefore need to be developed for gag and other grouper. We utilized sensitive immunoassays to measure levels of the sex steroids estradiol-17beta (E2), testosterone (T), and 11-ketotestosterone (11KT) and the egg-yolk precursor vitellogenin (VTG) in gag on a quarterly basis. Plasma and muscle levels of E2, T, and VTG in females were lowest during summer, rising in winter to reach peak values in spring. During winter and spring, plasma and muscle levels of 11KT were significantly higher in males than in adult females or immature fish. Combined measurement of VTG and 11KT in gag muscle proved useful for differentiating between males, adult females, and immature fish between December and April, the period of active gonadal recrudescence. This technique should prove useful in cases where fishery data are primarily collected through port sampling and gonads are not available for analysis.
21
Mohan, Thamizhmani, and Zereghaber Araya. "Design and Fabrication of Fiber Reinforced Boat in Eritrea." International Journal of Contemporary Research and Review 9, no. 08 (August 30, 2018): 20207–43. http://dx.doi.org/10.15520/ijcrr/2018/9/08/587.
Full textAbstract:
Transportation through water body is the cheapest and the most important way of transportation system in human life. Eritrea has a wide range of coastal area along Red Sea and it is obvious that those people who live in the coastal area were used to fishing. Wood is one of the easiest and ancient materials that have been utilized for the construction of boats and it also remains as a favorite one for many professionals, but the boats which were constructed of woods were much heavier in their light weight, therefore they couldn't carry more loads. Scarcity and high price of the timber along with the high annual repair and maintenance cost will reduce the income of the boatmen and also increased consumption of timber will results in faster deforestation.
In this situation, various alternative materials like ferrocement, aluminium, fibre reinforced glass and fibre reinforced concrete has been used as an alternative material for construction of boats. So, our first work in the fabrication of the boat is to choose the alternative material for fabricating a vessel.
Plywood has lots of advantages like they are stiffer than boards of equal thickness of regular lumber. Due to the stiffness of the plywood panels, weight can be saved by replacing the regular lumbar by plywood, which is an important problem faced in both power and sail boats. Fiber glass along with resins has many advantages like thermal insulation, electrical insulation, reinforcement, heat and corrosion resistant and easily recyclable for future purposes.
This technique of fabrication will give good results by reducing the problems with leakage and bio fouling of hull surface due to marine growth such as barnacles and in turn which increases the life span of the hull surface of the boats. So this work will be useful for those communities who are working with the boats for their transportation and fishing activities and it also improves the standard of the fisherman and their activities. By design and constructing a boat with plywood and FRG, the quality and standard of the boat will be improved along with a certain degree of safety. As a student of marine engineering department, this research work increase the knowledge about design software’s like solid works and delft ship, design parameters of a vessel and all the fabrication procedures of the boat by using fiber reinforced glass in combination with plywood.
22
Onay, Selin, Ömer Refet Çaylan, Zarife Göknur Büke, and Itır Köymen. "A Fabrication Method for Memristors with Graphene Top Electrodes and their Characterization." Hittite Journal of Science and Engineering 11, no. 1 (March 31, 2024): 7–14. http://dx.doi.org/10.17350/hjse19030000326.
Full textAbstract:
In recent years, there has been extensive research on the memristor, a non-volatile memory device that demonstrates effective emulation of biological synapses. The implementation of graphene as a top electrode in memristive switching systems presents an intriguing alternative to conventional materials such as Platinum. Graphene, as a carbon-derived material, possesses a remarkable area- to-volume ratio, biocompatibility, adsorption capabilities, and high electrical conductivity and thereby offers a promising avenue for the fabrication of biosensors with superior characteristics. This study reports a novel fabrication method of utilizing graphene as a top electrode in memristive devices. Characterization results of micrometric devices as well as larger memristive devices are also discussed. Larger devices show promising results to be used as memristive sensors. Microstructures have been fabricated successfully through developing a process flow and patterning graphene using photolithography and lift-off. E-beam evaporation and sputtering were used for depositing bottom metal electrodes and active layer respectively. Graphene was produced using the chemical vapor deposition (CVD) method and subsequently transferred using the fishing technique. Ultimately Pt/TiO2/TiOx/Graphene memristive devices were fabricated.
23
Nenciu, Florin, Iulian Voicea, Diana Mariana Cocarta, Valentin Nicolae Vladut, Mihai Gabriel Matache, and Vlad-Nicolae Arsenoaia. "“Zero-Waste” Food Production System Supporting the Synergic Interaction between Aquaculture and Horticulture." Sustainability 14, no. 20 (October 17, 2022): 13396. http://dx.doi.org/10.3390/su142013396.
Full textAbstract:
Inadequate production practices are widely used in aquaculture management, causing excessive water and energy usage, as well as ecological damage. New approaches to sustainable aquaculture attempt to increase production efficiency, while reducing the quantities generated of wastewater and sludge. The sustainable operating techniques are often ineffective, expensive, and difficult to implement. The present article proposes a zero-waste production system, designed for growing fish and vegetables, using a new circular operational concept that creates synergies between fish farming and horticulture. In order to optimize the operational flows with resources, products, and wastes in an integrated zero-waste food production cluster, a business model was designed associating three ecological production practices: a closed fishing pond, a technology for growing vegetables in straw bales, and a composting system. The design had the role to assist the transition toward multiple circular material flows, where the waste can be fully reintegrated into the production processes. A comparative evaluation was conducted in three alternative growing environments, namely, a soilless culture established in straw bales, a culture grown in soil that had received compost fertilizer, and the conventional farming technique. When compared to conventional methods, experiments showed a significant increase in the cluster’s cumulative productivity, resulting in a 12% improvement in energy efficiency, 18% increase in food production, and 25% decrease in operating expenses.
24
Dwi Sutanto, Teja Dwi, Devi Ratnawati, and Agus Martono HP. "Pembuatan Virgin Coconut Oil (VCO) Dengan Metode Enzimatis Dan Fermentasi." Indonesian Journal of Community Empowerment and Service (ICOMES) 1, no. 1 (December 27, 2021): 6–9. http://dx.doi.org/10.33369/icomes.v1i1.18978.
Full textAbstract:
Virgin coconut oil (VCO) is coconut oil that contains medium chain fatty acids (MCFA) which are easily broken down by the body in very high amounts. Besides that, VCO also has very high antioxidant content such as tocopherol and beta-carotene. This PPM activity aims to provide VCO Making Training with the Enzymatic Method with pineapple fruit extract and fermentation with baker's yeast in the community of RT 12 RW 03 Pematang Governor Village, Muara Bangkahulu District, Bengkulu City. The activity began with a lecture followed by a discussion and practice of making VCO with enzymatic and fermentation methods. The results of observations in the field indicate that the target community of this PPM activity is very enthusiastic to take part in this activity because they feel they have gained additional new knowledge about how to make VCO which can complement their knowledge of the known VCO making technique, namely the fishing method. With the knowledge of making VCO taught in this activity, the target community will be able to have alternative methods for making VCO other than what has been known so far with easily obtained equipment. Keywords: VCO; MCFA; antivirus; enzymatic; Fermentation
25
Sukparangsi, W., R. Bootsri, W. Sikeao, S. Karoon, and A. Thongphakdee. "181 Establishment of Induced Pluripotent Stem Cells from Fishing Cat and Clouded Leopard Using Integration-Free Method for Wildlife Conservation." Reproduction, Fertility and Development 30, no. 1 (2018): 230. http://dx.doi.org/10.1071/rdv30n1ab181.
Full textAbstract:
Fishing cat (Prionailurus viverrinus) and clouded leopard (Neofelis nebulosa) are wild felids, currently in vulnerable status according to the International Union for Conservation of Nature red list (2017). Several measures in assisted reproductive technology (e.g. AI, embryo transfer) have been used by the Zoological Park Organization of Thailand (ZPO) to increase their offspring in captivity. Recently, the generation of induced pluripotent stem cell (iPS cells) becomes popular and provides alternative way to preserve good genetics in the form of cell with diverse capacities. This great potential of iPS cells is unlimited self-renewal and pluripotency, similar to embryonic stem cells (ESC). Under the right cell culture conditions, pluripotent stem cells can differentiate into all cell types of the body. Here, we aimed to find the optimal condition to generate integration-free iPS cells from fishing cat and clouded leopard. At first, to obtain somatic cells for cellular reprogramming, adult dermal fibroblast cell lines from both species were established from belly skin tissues. Subsequently, several nucleofection programs of AmaxaTM 4D-nucleofectorTM (Lonza, Basel, Switzerland) were examined to introduce integration-free DNA vectors carrying reprogramming factors into the felid fibroblasts. The transfected cells were cultured under numerous conditions: (1) matrix/defined surface including irradiated mouse embryonic fibroblast, gelatin, vitronectin, and Geltrex® (Thermo Fisher Scientific, Waltham, MA, USA); (2) ESC/iPS cell medium including Essential 8TM (Thermo Fisher Scientific) DMEM containing KnockOutTM Serum Replacement (KOSR; Thermo Fisher Scientific) and/or fetal bovine serum (FBS); and (3) supplement including basic fibroblast growth factor (bFGF), leukemia inhibitory factor (LIF), l-ascorbic acid, nicotinamide, ALK5 inhibitor (A83-01) and RevitaCellTM (Thermo Fisher Scientific). We found that optimal nucleofection programs for human dermal fibroblast including FF-135 and EN-150 were able to transfer episomal vectors and excisable piggyBAC transposon carrying reprogramming factors into fishing cat and clouded leopard fibroblasts, respectively. The iPS-like colonies appeared around 26 to 30 days post-nucleofection. The culture of transfected cells on either Geltrex® or Vitronectin-coated surface supports the formation of iPS-like colonies with different derivation efficiency (0.01 and 0.005%, respectively). In addition, all colonies were formed under medium containing FBS, together with both bFGF and LIF supplements. Taken together, we have developed a platform to generate iPS cells from tissue collection to the establishment of iPS cell culture. This will further enable us to apply the technique to obtain iPS cells from other endangered and vulnerable felid species.
26
Muhtady, Rizal, Thamrin Thamrin, and Darwis Darwis. "Valuasi ekonomi dan pengelolaan mangrove secara berkelanjutan di desa Jangkang Kecamatan Bantan." Jurnal Zona 3, no. 1 (March 5, 2021): 34–44. http://dx.doi.org/10.52364/jz.v3i1.36.
Full textAbstract:
This study aims to determine the direct economic valuation, index value and sustainability status, and strategy for the sustainability of the mangrove ecosystem in Jangkang Village. The research method of calculating direct economic valuation is carried out using a market approach. To assess the index and status of sustainability with a multidimensional scaling (MDS) approach through the ordination technique Rapid Appraisal For Status Of Mangrove (Rap-Mangrove). The results showed that in direct economic valuation, the shrimp fishing sector has a greater potential compared to other sectors. The total economic value of shrimp is IDR 1,440,000,000 / year, capture fisheries is IDR 686,400,000 / year and panglong charcoal IDR 447,500,000 / year. The multidimensional results of the index value and the status of the sustainability of the mangrove ecosystem in Jangkang Village obtained a value of 50.76 in the less sustainable category. The results of the analysis leverage show that of the 18 indicators, there are 10 sensitive indicators that affect the sustainability status of Jangkang Village. To increase the sustainability status of sensitive indicators, strategies that can be carried out include participatory rehabilitation, development of alternative livelihoods, counseling for the Akit Tribe to maintain local wisdom values, and intensive approaches to community leaders.
27
Lestari, Windiariani, Dini Auliya Zayyana, Nuning Setyaningrum, and Titis Amelia. "The Guild Composition for Modelling Fish Community in Banjaran River, Purwokerto." Biosaintifika: Journal of Biology & Biology Education 10, no. 3 (December 18, 2018): 698–705. http://dx.doi.org/10.15294/biosaintifika.v10i3.15602.
Full textAbstract:
Over exploitation of consumed fishes causes declining of targeted fish populations that will lead to a cascade effect to the guild compositions. The change of carnivorous, omnivorous and herbivorous fish populations drives to the food chain destructions and unstable ecosystems. The objective of this study was to build fish community modelling based on guild compositions. This study was conducted on fish communities in the Banjaran River. The data collected were species richness, the abundance of fish and the guild composition among carnivore, herbivore, and omnivore. Survey and purposive random sampling technique were applied and Banjaran River was divided into five sites based on the physical characteristics of the environment and fishing activities. Species richness data were analyzed by ANOVA, the composition of the carnivorous, omnivorous and herbivorous fish was analyzed descriptively based on the guild pyramides. About 115 individuals consist of 17 species belong to 5 families were found. The species richness in the five sites in was relatively similar (P > 0.05 (P = 0.269)). The fish community in site 3 had the balanced composition which was composed by 3% carnivores, 21.2% omnivores and 75.8% of herbivores. This fish community modelling could be an an alternative way to manage fish community. By controlling the carnivorous fish population, the natural resource especially fish as food resource will sustain and the species loss will be prevent.
28
Puji Rejeki, Sri Untari, Y. S. Darmanto, and Eko Nurcahya Dewi. "THE HANDLING OF ROUND SCAD ON MINI PURSE SEINE BOATS, REGENCY OF REMBANG REVIEWED BASED ON THE DECREE OF MINISTER OF MARINE AFFAIRS AND FISHERIES NUMBER 52A/KEPMEN-KP/2013." Jurnal Ilmu dan Teknologi Kelautan Tropis 11, no. 1 (April 1, 2019): 13–24. http://dx.doi.org/10.29244/jitkt.v11i1.23301.
Full textAbstract:
The round scad produced will have the best quality if the catching and handling method onboard and at the port is carried out quickly, precisely and carefully. The entire handling activity has been regulated in the Decree of the Minister of Marine Affairs and Fisheries (KEPMEN KP) number 52A/KEPMEN-KP/2013. This research aimed to determine the level of conformity between the handling carried out onboard with the standard handling regulated in the KEPMEN KP number 52A/KEPMEN-KP/2013. The analysis results will be used as the basis for developing alternative strategies for the standard implementation of Round scad on the mini purse seine boats in the Regency of Rembang. The data collecting was carried out by observation and interviews with respondents. Data were analyzed using gap analysis, which is looking for the difference between standard handling and the handling carried out during the research. The elements analyzed were boat facilities, onboard hygiene, human resources, tools and equipment for handling fish, as well as fishing technique and catching unit. The research results showed that the average score of the conformity of handling on the five elements are 69.52%, which means that the round scad handling on mini purse seine boat in the Regency of Rembang is not reaching the standards regulated in the KEPMEN KP number 52A/KEPMEN-KP/2013. This is caused by the low level of conformity in the element of human resources of 38.56%.
29
Dao, Manh, An Nguyen, The Nguyen, Ha Pham, Dinh Nguyen, Quoc Tran, Huong Dao, Duyen Nguyen, Huong Dang, and Luc Hens. "A Hybrid Approach Using Fuzzy AHP-TOPSIS Assessing Environmental Conflicts in the Titan Mining Industry along Central Coast Vietnam." Applied Sciences 9, no. 14 (July 22, 2019): 2930. http://dx.doi.org/10.3390/app9142930.
Full textAbstract:
Environmental conflict management gains significance in rational use of natural resources, ecosystem preservation and environmental planning for mineral mines. In Central Coast Vietnam, titan mines are subject to conflicting use and management decisions. The paper deals with an empirical research on applying a combination of the fuzzy Analytic Hierarchy Process (AHP) and the fuzzy Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) to measure environmental conflicts emerging as a result of titan mining in Vietnam. The methodology used in the paper combines the fuzzy AHP and the fuzzy TOPSIS to rank environmental conflicts and propose conflict prevention solutions in the titan mining industry of Ky Khang coastal commune (Ky Anh district, Central Coast Vietnam). Data was collected by using a questionnaire with 15 locals, 8 communal authorities, 2 district authorities, and 12 scientific experts on titan mining, environmental geology, and sustainability management. The result shows that, titan mining conflicts with the eight criteria of economic sectors at five alternative sites including beach, protected forest, agricultural area, settlement area, and industrial area. The conflicts between titan mining and forestry, agriculture, settlements, fishing and aquaculture are highly valued. The beach area shows most environmental conflict as a result of titan mining, followed by the agricultural area and settlement area. Based on the empirical findings, legal and procedural tools such as environmental impact assessments, strategic environmental assessments, integrated coastal zone management, marine spatial planning, and multi-planning integration advancing environmental management for titan mines in Vietnam are suggested.
30
Surbakti, Joi Alfreddi, and M. Basri. "Tingkat Ramah Lingkungan Alat Tangkap Ikan di Wilayah Perairan Kecamatan Kupang Barat." Journal of Marine Research 13, no. 1 (December 28, 2023): 11–19. http://dx.doi.org/10.14710/jmr.v13i1.34118.
Full textAbstract:
Kecamatan Kupang Barat adalah salah satu kecamatan yang memiliki potensi perikanan tangkap di Kabupaten Kupang, Potensi perikanan tangkap di Kecamatan Kupang Barat belum dikembangkan secara optimal. Nelayan di Kecamatan ini masih menggunakan alat tangkap yang tradisional. Jumlah produksi yang masih rendah terkadang membuat nelayan memodifikasi alat tangkapnya. Tujuan penelitian ini adalah menganalisis unit penangkapan yang sesuai dengan Code of Conduct Responsible for Fisheries (CCRF) di perairan Kecamatan Kupang Barat. Metode penelitian yang digunakan adalah metode deskriptif dengan teknik sampling quota sampling, pada bulan April-Juli 2021. Alat tangkap ikan yang menjadi objek penelitian ini adalah pukat cicin, jaring insang, jala buang, pancing tonda dan pancing rawai dengan jumlah responden sebanyak 50 responden. Rentang nilai 4 kategori alat tangkap ramah lingkungan alat yang dijadikan sampling, Hasil yang diperoleh dari penelitian ini yaitu alat tangkap yang masuk kategori sangat ramah lingkungan 36 pada alat tangkap pancing rawai dan pancing tonda. West Kupang district is one of the districts that has captive fishing potential in Kupang District, the captivating potential in West Kupanga district has not been optimally developed. The fishermen in this district still use traditional catch tools. The low levels of production sometimes cause fishermen to modify their catch tools. The purpose of this research is to analyze catch units in accordance with the Code of Conduct Responsible for Fisheries (CCRF) in the waters of the West Kupang district. The research method used is a descriptive method with a quota sampling technique, in the month of April-July 2021. The objects of this research are fish catch tools such as purse seine, gill net, throw net, longline fish and troll line with the number of respondents as much as 50 respondents. The range of values of 4 categories of environment-friendly capture tools used as sampling, the results obtained from this research are capture devices that are in the category of very environmentally friendly 36 longline fish and troll line.
31
Barbieri, Jéssica Caroline Zanette, Thiago Peixoto de Araújo, Márcia Teresinha Veit, Paulo Rodrigo Stival Bittencourt, Carlos Eduardo Tino Balestra, Gilberto da Cunha Gonçalves, Ricardo Schneider, and André Sandmann. "“The River Is My Life”: Representations of People from the Vila Vista Alegre Riverine Community on the Branco River in Southern Roraima, Brazil." Revista de Gestão Social e Ambiental 18, no. 8 (April 19, 2024): e03568. http://dx.doi.org/10.24857/rgsa.v18n8-053.
Full textAbstract:
Purpose: To understand the representations of residents about Rio Branco, emphasizing social aspects (experience, beliefs and economic importance) in the context of Vila Vista Alegre, municipality of Caracaraí, in Roraima. Theoretical framework: the Amazon riverside people built their way of life around water, making the local natural resource essential to their existence. Water, in addition to being essential to human existence, can also be the main alternative for economic activity, leisure and transport of this population. Method/design/approach: Interviews were carried out using a semi-structured questionnaire using the “Snowball” technique, with the resident who had lived in the area as the initial interviewee, with the data being worked through content analysis. Results and conclusion: The environmental modifications mentioned by the residents have caused changes in fishing spots, as well as in all the old dynamics of this social group, which point to the absence of projects that help in the conservation of it is necessary to include residents in decisions regarding the conservation actions of this water resource, together with environmental agencies, due to their active participation in the emergence of the community. Research implications: The approach involves socio-environmental aspects of a riverside community that coexists with threats from anthropic activities to the Branco River, an essential water source for the maintenance of the material and cultural systems of this social group - fishermen from Vila Vista Alegre. Originality/value: The discussion about the use of water resources by residents, highlighting the meaning of this ecosystem, their beliefs and the environmental damage they perceive, will enable the correct direction of the responsible bodies and public policies for environmental education.
32
Lumentut, Hence Beedwel, and Sri Hartati. "Sistem Pendukung Keputusan untuk Memilih Budidaya Ikan Air Tawar Menggunakan AF-TOPSIS." IJCCS (Indonesian Journal of Computing and Cybernetics Systems) 9, no. 2 (July 31, 2015): 197. http://dx.doi.org/10.22146/ijccs.7548.
Full textAbstract:
AbstrakPotensi perikanan budidaya air tawar semakin meningkat, hal tersebut disebabkan produksi ikan sektor penangkapan mendekati “overfishing”. Budidaya perikanan air tawar memiliki beberapa alternatif ikan yang memiliki nilai ekonomis tinggi yaitu ikan Mas, ikan Mujair, ikan Nila, ikan Gurame, ikan Lele dan ikan Patin. Alternatif ikan ini memiliki karakteristik yang berbeda untuk masing-masing jenis pembudidayaannya. Parameter-parameter yang mempengaruhi proses budidaya ikan air tawar tersebut diantaranya: faktor kesesuaian air meliputi: suhu, kecerahan, DO (derivater oksigen), keasaman (pH). Sedangkan pemilihan budidaya perikanan yang menguntungkan bisa dinilai dari faktor finansial yaitu: NPV (Net Present Value), ROI (Return on Investment), BCR (Benefit Cost Ratio), PBP (Pay Back Period) dan BEP (Break Event Point). Sedangkan metode yang dipergunakan untuk pengambilan keputusan yaitu Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) sebagai salah satu model decision dapat digunakan untuk memberikan preferensi kepada para petani budidaya ikan, karena alternatif yang terpilih tidak hanya memiliki jarak terpendek dari solusi ideal positif tetapi juga jarak terpanjang dari solusi ideal negatif. Hasil dari penelitian ini menunjukkan bahwa sistem penunjang keputusan yang mempertimbangkan parameter kondisi lingkungan air dan faktor finansial dapat membantu petani budidaya ikan untuk menentukan jenis budidaya ikan air tawar yang akan dijalankan. Kata kunci—Ikan air tawar, Analisis Finansial, TOPSIS, SPK. AbstractFreshwater aquaculture potential is increasing, one of the reason is production of fishing over the sea is almost deal with "overfishing". Freshwater aquaculture fish have few alternatives such as Carp, Mossambique, Tilapia, Gouramy, Catfish and Pangacius. Each has different type of cultivation. The requirement parameters that influence the process of freshwater cultive is water suitability factors include: Temperature, Brightness, DO (derivated oxygen), acidity (pH) etc. While the selection of profitable aquaculture can be determind from financial bussines as: NPV (Net Present Value), ROI (Return on Investment), BCR (Benefit Cost Ratio), PBP (Payback Period) and BEP (Break Event Point). The methods that used to help the decision-making process that Method Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) as one of the decision models can be used to give preference to farmers fish farming, because the alternative is chosen not only have the shortest distance from a solution positive ideal but also the longest distance from the negative ideal solution. The results of this study show that decision support systems that take into account the environmental condition of water parameters and financial bussines can help fisherman to determine the type of freshwater Aquaculture culture to be run. Keywords— Fresh Water Fish, Financial Analysis, TOPSIS, SPK
33
Xitong Zhang, Chloe Zhang. "ASSESSING THE IMPACT OF OVERFISHING ON AFRICA AND SUSTAINABLE FISHING PRACTICES." International Journal of Social Science and Economic Research 08, no. 04 (2023): 641–49. http://dx.doi.org/10.46609/ijsser.2023.v08i04.006.
Full textAbstract:
n this study, we investigated the problem of overfishing along the African coastlines, using two entities of South Africa and Central Africa Republic for data analysis, concentrating on the causes of overfishing and potential preventative measures. In order to understand the current overfishing problem in Africa, we first looked at the high local and global demand for seafood, the financial incentives for overfishing, and the ineffective government regulations and enforcement of sustainable fishing techniques. Through our analysis, we were able to pinpoint several important elements that contribute to overfishing in Africa, such as ineffective fisheries management regulations, lax law enforcement, a lack of alternatives for fishing communities to earn a living, and a lack of knowledge of sustainable fishing methods. We suggested several potential solutions to address these problems, such as implementing and enforcing sustainable fishing laws, encouraging alternative livelihoods for fishing communities, enhancing fisheries management through community-based methods, and raising awareness of sustainable fishing methods. Also, we offered pertinent academic references to back up our suggestions.
34
Dewinta, Astrid Fauzia, and Widodo Farid Ma’ruf. "Sustainability of Fish Fillet Processing Industries in Batang District." Jurnal Ilmiah Perikanan dan Kelautan 12, no. 1 (March 21, 2020): 81. http://dx.doi.org/10.20473/jipk.v12i1.14536.
Full textAbstract:
HighlightsSustainability index from fish fillet industry is important to know because a fishing industry just not looking for feasibility study in economic dimension but all dimension (resources, technology, social, legal and institutional)Multidimension sustainability index from fish fillet processing industry in Batang is included in the category of “Self Sustainable” with a value of 50.39 The dimensions causes of the low sustainability in fish fillet industry are social, legal and institutional, and technology with the value of each dimension that is 48.6; 40.27; 48.9 in means “less sustainable”AbstractThe existence of fish fillet processing industries in Batang are able to have a positive impact on the surrounding community because it can create employment opportunities and increase community income. Therefore, it is necessary to know the importance of the sustainability of fish fillet processing industries to see the prospect of fishery business after a feasibility study. The aims of this study were to analyze the sustainability index value, determine the sensitive attributes of each dimension, and provide alternative management strategies of fish fillet processing industries in Batang. The method of analysis used was Rapfish method which is based on the technique of ordination by putting something measured using MDS on the program of Rapfish G77 Alscal program (VBA and Excel). Status management of fish fillet processing industries sustainability in Batang, which are multidimensionally sustainable, are 50.39. Whereas in other dimensions such as resources 58.20 (quite sustainable), economic 55.33 (fairly continuous), social 48.60 (less sustainable), legal and institutional 40.27 (less sustainable) and technological 48.90 (less sustainable). Based on this results, several management strategies should be prepared including increasing the capacity of government institutions, enhancing the role of fish fillet processing industry on society, increasing the application of technology and infrastructure, increasing the revenue of the entrepreneurs of fish fillet processing industry, preventing decline of quality and quantity of fish resources.
35
Kozioł, Anna, Kristofer Gunnar Paso, and Stanisław Kuciel. "Properties and Recyclability of Abandoned Fishing Net-Based Plastic Debris." Catalysts 12, no. 9 (August 26, 2022): 948. http://dx.doi.org/10.3390/catal12090948.
Full textAbstract:
Plastics in marine environments undergo molecular degradation via biocatalytic and photocatalytic mechanisms. Abandoned, lost, or discarded fishing gear (ALDFG) damages marine and coastal environments as well as plant and animal species. This article reviews ghost fishing, ecological damage from marine plastics, recommended recycling practices and alternative usages of derelict fishing gear. Material mixing techniques are proposed to counteract the effect of biocatalytic and photocatalytic biodegradation within the context of plastic fish net recycling. There is a need for a new and rapid “multidimensional molecular characterization” technology to quantify, at a batch level, the extent of photocatalytic or biocatalytic degradation experienced on each recovered fishing net, comprising molecular weight alteration, chemical functional group polydispersity and contaminant presence. Rapid multidimensional molecular characterization enables optimized conventional material mixing of recovered fishing nets. In this way, economically attractive social return schemes can be introduced for used fishing nets, providing an economic incentive for fishers to return conventional fishing nets for recycling.
36
Wujdi, Arief, Bram Setyadji, and Suciadi Catur Nugroho. "IDENTIFIKASI STRUKTUR STOK IKAN CAKALANG (Katsuwonus pelamis Linnaeus, 1758) DI SAMUDRA HINDIA (WPP NRI 573) MENGGUNAKAN ANALISIS BENTUK OTOLITH." Jurnal Penelitian Perikanan Indonesia 23, no. 2 (November 14, 2017): 77. http://dx.doi.org/10.15578/jppi.23.2.2017.77-88.
Full textAbstract:
Ikan cakalang (Katsuwonus pelamis Linnaeus, 1758) yang tersebar luas di Samudra Hindia selatan Jawa, Bali dan Nusa Tenggara telah dieksploitasi secara terus menerus dengan berbagai alat tangkap. Pengelolaannya saat ini belum rasional karena masih diasumsikan sebagai unit stok tunggal tanpa adanya bukti ilmiah sehingga rentan mengalami lebih tangkap. Penelitian ini bertujuan untuk mengindentifikasi struktur stok ikan cakalang dengan teknik analisis bentuk otolith. Sampel otolith (saggittae) dikumpulkan pada bulan April, Agustus, dan September tahun 2016 di 4 lokasi, yaitu: Binuangeun, Sadeng, Prigi, dan Labuhan Lombok. Rekonstruksi bentuk otolith dilakukan dengan pendekatan outline analysis menggunakan teknik transformasi discrete wavelet. Uji statistik multivariate dengan kluster analisis menggunakan canonical analysis ofprincipal (CAP) dan uji ANOVA-like permutation juga diterapkan untuk menentukan signifikansi antar populasi. Hasil penelitian menunjukkan bahwa analisis bentuk otolith dapat digunakan sebagai penanda yang akurat untuk mengidentifikasi struktur stok. Bentuk otolith ikan cakalang bervariasi khususnya pada bagian rostrum, namun tidak berbeda nyata antar populasi (p>0,001). Hal tersebut berarti struktur stok ikan cakalang di Samudra Hindia (WPP NRI573) terdiri dari 1 populasi yang bergerak mengikuti pola perubahan lingkungan perairan di sepanjang Samudra Hindia. Skipjack tuna (Katsuwonus pelamis Linnaeus, 1758) distributed vastly along the Indian Ocean south of Java, Bali and Nusa Tenggara. It has been exploited by various fishing gear yet it always assumed to be a single stock. It was not based on scientific evidence but merely based on “a scientific assumption”, so that vulnerable to subject of overfishing. This research aims to examine the alternative tool for identifying the stock structure based on the otolith shape. Sampling location took place in four regions, namely: Binuangen, Sadeng, Prigi and Labuhan Lombok. The otolith (sagittae) samples was collected during April, August, and September 2016. The otolith shape was reconstructed using outline analysis with discrete wavelet transformation technique. A multivariate statistic using canonical analysis of principal (CAP) and ANOVA-like permutation test were also used to determine the signification among populations. The result showed that skipjack’s otolith shape was varied from one and another, especially in the rostrum. But it was not statistically different among regions (p>0.001), which means a single stock for skipjack in the Indian Ocean (Indonesian territory of FMA 573). This study also proved that otolith shape can be useful marker tool to identify stock structure for management purpose.
37
Abbott, Joshua K., and Eli P. Fenichel. "Anticipating adaptation: a mechanistic approach for linking policy and stock status to recreational angler behavior." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 8 (August 2013): 1190–208. http://dx.doi.org/10.1139/cjfas-2012-0517.
Full textAbstract:
We use techniques from economic recreation demand modeling to develop a mechanistic model of individual recreational fishing behavior and estimate it using license-frame survey data. By consistently integrating individuals’ seasonal decisions of where, whether, and how much to fish, the model generates predictions of aggregate indicators such as angler-days and fishing mortality as phenomena arising from individual behavior. We use the model to simulate alternative future scenarios by altering policy variables or measures of fishing quality, such as catch rates. The mechanistic nature of the model incorporates anglers’ adaptive behavior to these stimuli, generating scenarios that are likely more robust to shifts in the decision context than many commonly used phenomenological models. We utilize the model to examine the sensitivity of total catch and catch per unit effort (CPUE) to changes in fish stocks, revealing substantial nonlinearities in this relationship. We also simulate total fishing trips, participation, CPUE, and total catch for a seasonal fishing permit versus a per-trip fee, finding dramatic differences across the two policies that call into question the wisdom of permit fees as management tools.
38
Kamilan, Kamilan, Muhammad Syahrir Ramang, Heru Susilo, Fitriyana Fitriyana, Nurfadilah Nurfadilah, and Auliansyah Auliansyah. "Economic Benefits and Governance of Guiding Barrier Fishing Gear in White-Spotted Spinefoot Fish Fishing Activities (Siganus canaliculatus, Park 1797) In Bontang City Waters." Economic and Social of Fisheries and Marine Journal 011, no. 01 (October 18, 2023): 77–88. http://dx.doi.org/10.21776/ub.ecsofim.2023.011.01.07.
Full textAbstract:
Guiding barrier fishing gear has been used in recent years in the mangrove, seagrass, and coral ecosystem areas of Bontang City. In previous studies, the main target, white-spotted spinefoot fish, has depreciated and degraded as a result of overfishing. This study calculates the economic benefits and attempts to analyze the management policy of guiding barrier fishing gear to overcome the depreciation and degradation problems. To calculate the economic benefits, the fisheries production approach was used, while the policy analysis used the interpretive structural model technique. During the peak season of white-spotted spinefoot fish, the average fisherman earns up to IDR400,750 per day, with a minimum of IDR103,000 and a maximum of IDR1,904,000. The optimal fishing period is nine months, after which fishermen will stop fishing in Ramadan, August, and September. There are six guiding barrier fishing gear management policies, namely: 1) open and close systems at the installation site; 2) increase the mesh size used; 3) reduce the number; 4) moratorium on new installations; 5) limit the number of owners for each fisherman; and 6) regulate the distance between guiding barrier fishing gear. Of the six policy alternatives, the top priority is to increase the mesh size used.
39
Pakpahan, Rosdiana, and Anggraeni M.S Lagalo. "Strategi Pengembangan Kampung Wisata Pancer di Kota Serang Sebagai Destinasi Wisata." Tulisan Ilmiah Pariwisata (TULIP) 6, no. 2 (December 29, 2023): 84. http://dx.doi.org/10.31314/tulip.6.2.84-92.2023.
Full textAbstract:
Pancer tourism village is not separated from the synergy that is built between the governments, community, and Pokdarwis (Kelompok Sadar Wisata) based on empowerment. Pancer Tourism Village has several tourist attractions that can be enjoyed by tourists such as marine tourism, selfie tourism, and fishing. With the existence of the Pancer tourism village, it can be one of the closest tourist alternatives for the people of Serang City and also can increase the local budget revenues of Serang City. The village with the social conditions of the fishing community is expected to be able to support the local economy.In this research, the researcher will discuss development strategy which is conducted in the development of the Pancer tourism village. As the researcher’s goal is to collect the development strategy plan of tourism village in Serang City especially Pancer tourism village. The data analysis technique used in this research is qualitative data analysis techniques using primary data and secondary data. This research produced results, that the Pancer tourism village is the only tourist village in the Serang City that already has marine tourism as its main destination. The Pancer tourism village still needs cooperation with outside parties to be more advanced in its development.
40
Kasmi, Mauli, Syamsul Marlin Amir, Andryanto Aman, Budiman Haruna, and Arif Fuddin Usman. "Implementation of Science and Technology for Regional Development: Improving the Quality of Ornamental Fish Production with a Concentration of Clove Oil Alternative to Sustainable Fishing Gear." Mattawang: Jurnal Pengabdian Masyarakat 3, no. 3 (September 27, 2022): 370–79. http://dx.doi.org/10.35877/454ri.mattawang1223.
Full textAbstract:
The Technology Improving the quality and quantity of ornamental fish depends on the catch production. System development of environmentally friendly fishing gear as an alternative to destructive fishing. The model developed by the PIPK team using clove oil concentration. Mastery of technological innovation, especially in handling techniques using injel ornamental fish fishing gear is still relatively low. The purpose of this program is to increase the results of the fishing community's business activities that are more economically independent, profitable and socially, as well as to improve soft skills and hard skills. Components in the clove oil and 95% alcohol concentration system with a composition of 1: 2. Supporting equipment to facilitate the determination of fishing locations using Garmin GPS to find efficient and effective fishing locations. The maintenance aquarium has a capacity of up to 1,500 liters of sea water with a rectangular shape. The method is to follow the direct process of handling ornamental fish with correct modular recirculation in both SMEs so as to produce quality ornamental fish products in a system of applying maintenance technology with a modular recirculation system efficiently and effectively.
AbstrakTeknologi untuk Peningkatan kualitas dan kuantitas ikan hias injel tergantung dari hasil produksi tangkap. Sistem pengembangan alat tangkap ramah lingkungan sebagai alternatif destructive fishing. Model yang dikembangkan oleh tim PIPK dengan menggunakan konsentrasi minyak cengkeh. Penguasaan inovasi teknologi khususnya penanganan Teknik menggunakan alat tangkap ikan hias injel masih relative rendah. Tujuan Program ini adalah kegiatan ini dapat meningkatkan dipersivikasi produk masyarakat nelayan yang lebih mandiri secara ekonomi serta meningkatkan keterampilan soft skill dan hard skil. Komponen pada sistem konsentrasi minyak cengkeh dan Alkohol 95% dengan komposisi 1 : 2. Peralatan pendukung untuk memudahkan penentuan lokasi tangkap dengan menggunakan GPS Garmin untuk mencari lokasi tangkap yang efesien dan efektif. Aquarium pemeliharaan berkapasitas hingga 1.500 liter air laut dengan bentuk segi empat. Metodenya adalah mengikuti proses kegiatan langsung penanganan ikan hias injel dengan resirkulasi modular yang benar di kedua UKM sehingga mdnghasilkan kualiatas produk ikan hias injel pada sistem penerapan teknologi pemeliharaan dengan system resirkulasi modular secara efesien dan efektif.
41
Arisman, Arisman, Ihsan Ihsan, and Kasmawati Saleh. "PEMBERDAYAAN MASYARAKAT NELAYAN DI WILAYAH PESISIR KELURAHAN KOLO KECAMATAN ASAKOTA KOTA BIMA PROVINSI NTB." JOURNAL OF INDONESIAN TROPICAL FISHERIES (JOINT-FISH) : Jurnal Akuakultur, Teknologi Dan Manajemen Perikanan Tangkap, Ilmu Kelautan 4, no. 1 (June 30, 2021): 22–34. http://dx.doi.org/10.33096/joint-fish.v4i1.86.
Full textAbstract:
The Study on Empowerment of Fishermen Communities in the Coastal Area of Kolo Village, Asakota District, Bima City, NTB Province. Supervised by Ihsan as the first mentor and Kasmawati as the second mentor.This study aims to determine: 1) the economic, social and cultural conditions of the fishing community in the coastal area of the Kolo Village 2) the factors that influence the empowerment of the fishing community in the coastal area of the Kolo Village 3) the strategy for empowering the fishing community in the coastal area of the Kolo Village The data collection method used in this research is by using primary data and secondary data. The process of obtaining primary data is carried out through interview techniques and direct observation in the field, then secondary data is obtained through the relevant agencies, in this case the Department of Marine Affairs and Fisheries, the Department of Tourism. conducting data analysis is determining the stages of activity against the data that is being and has been collected with the aim of drawing conclusions. the economic condition of the community still needs to be improved specifically to increase the income and standard of living of the fishing community. while the socio-cultural aspects of society are open. The factor that influence the empowerment of fishing communities in the coastal area of Kolo Village are fishing business. The results of the matrix analysis of the relationship between SWOT elements for community empowerment strategies show 2 (two) priority alternative strategies, namely 1) technology development and fisheries scale businesses 2) increasing fishing productivity using environmentally friendly fishing gear
42
Hasibuan, Julia Syahriani, Rizky Febriansyah Siregar, Khairunnisa, Astrid Fauzia Dewinta, and Vindy Rilani Manurung. "Aquascape Techniques as an Alternative Livelihood During the COVID-19 Pandemic in Percut Sei Tuan Village." ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat 7, no. 2 (December 23, 2022): 557–62. http://dx.doi.org/10.32734/abdimastalenta.v7i2.7680.
Full textAbstract:
Percut Village is one of the villages located on the East Coast of North Sumatra which is directly opposite the waters of the Malacca Strait so that the main livelihood of the villagers is as fishermen. During pandemic, the government has implemented a Large Scale Social Restriction policy which has an impact on the social status of the community, such as limited fishing activities which have resulted in a decrease in the selling price of caught fish. In addition, the silting of sedimentation in 2020 resulted in the tides and coastline becoming unclear so that fishermen could not go to sea optimally. Based on these considerations, knowledge dissemination and training on techniques for creating aquascapes have been carried out for groups of young fishermen in July – September 2021 in Percut Village, Percut Sei Tuan District, Deli Serdang Regency, North Sumatra Province, North Sumatra Province. The results of this activity have a positive impact on the community to increase creativity and enrich soft skills by applying the knowledge gained to start becoming an entrepreneur as an alternative livelihood for fishermen youth groups so that they are able to compete in the midst of society and can create jobs.
43
Chan, Hing Ling, and Minling Pan. "Fishing trip cost modeling using generalized linear model and machine learning methods – A case study with longline fisheries in the Pacific and an application in Regulatory Impact Analysis." PLOS ONE 16, no. 9 (September 7, 2021): e0257027. http://dx.doi.org/10.1371/journal.pone.0257027.
Full textAbstract:
Fishing trip cost is an important element in evaluating economic performance of fisheries, assessing economic effects from fisheries management alternatives, and serving as input for ecosystem and bioeconomic modeling. However, many fisheries have limited trip-level data due to low observer coverage. This article introduces a generalized linear model (GLM) utilizing machine learning (ML) techniques to develop a modeling approach to estimate the functional forms and predict the fishing trip costs of unsampled trips. GLM with Lasso regularization and ML cross-validation of model are done simultaneously for predictor selection and evaluation of the predictive power of a model. This modeling approach is applied to estimate the trip-level fishing costs using the empirical sampled trip costs and the associated trip-level fishing operational data and vessel characteristics in the Hawaii and American Samoa longline fisheries. Using this approach to build models is particularly important when there is no strong theoretical guideline on predictor selection. Also, the modeling approach addresses the issue of skewed trip cost data and provides predictive power measurement, compared with the previous modeling efforts in trip cost estimation for the Hawaii longline fishery. As a result, fishing trip costs for all trips in the fishery can be estimated. Lastly, this study applies the estimated trip cost model to conduct an empirical analysis to evaluate the impacts on trip costs due to spatial regulations in the Hawaii longline fishery. The results show that closing the Western and Central Pacific Ocean (WCPO) could induce an average 14% increase in fishing trip costs, while the trip cost impacts of the Eastern Pacific Ocean (EPO) closures could be lower.
44
Rahim, Sri Wahyuni. "RESPONS IKAN ZEBRA EKOR HITAM (Dascyllus melanurus) TERHADAP PENGGUNAAN ANAESTESI MINYAK CENGKEH SEBAGAI ALAT BANTU PENANGKAPAN PADA SKALA LABORATORIUM (Response of Zebra Fish Blacktail (Dascyllus melanurus) on the use of Clove Oil Anesthesia as a ..." Marine Fisheries : Journal of Marine Fisheries Technology and Management 8, no. 1 (August 11, 2017): 51. http://dx.doi.org/10.29244/jmf.8.1.51-61.
Full textAbstract:
<p align="center"><strong><em>ABSTRACT</em></strong></p><p><em>The process of catching fish using an anesthetic technique is inseparable from the use of synthetic chemicals (cyanide) that negatively impact the target fish, non-target and on coral reefs. One way to reduce the negative impact of cyanide is to look for another alternative that are environmental friendly. One alternative is clove oil. The </em><em>objectives of study are </em><em>to determine the optimal concentration of clove oil on the induction and recovery time of zebra fish blacktail (Dascyllus melanurus).</em><em> </em><em>Samples used were captured without using cyanide. A tank with dimension 30 x 40 x 50 m filled with sea water was mixed with different concentrations of clove oil.</em><em> </em><em>The experiment was repeated three times. Observation of the behavior was performed to determine the induction and recovery time.</em><em> </em><em>The results showed the longest induction time were observed in concentration of 20 ppm with an average time of 321.33 seconds and the fastest time of induction was recognized in concentration of 60 ppm with an average time of 28.33 seconds. Longest recovery time was at a concentration of 20 ppm with an average time of 188.33 seconds and the fastest recovery time was at a concentration of 40 ppm with an average time of 80.67 seconds. Clove oil concentration of 40 ppm was most effective in fishing with induction time ranged from 40-48 seconds, and recovery time ranges from 72-91 seconds.</em><em></em></p><p class="TubuhTulisanAll"><strong><em>Keywords:</em></strong><strong><em> </em></strong><em>clove oil, induction time, recovery time</em><em>, </em><em>zebra fish blacktail</em><em></em></p><p align="center"><strong>ABSTRAK</strong></p><p class="Abstrakisi">Proses penangkapan ikan dengan menggunakan teknik pembiusan tidak terlepas dari penggunaan bahan kimia sintetik (sianida) yang berdampak negatif terhadap ikan target, non-target serta pada terumbu karang. Salah satu cara untuk mengurangi dampak negatif dari sianida adalah dengan mencari alternatif lain yang ramah lingkungan. Salah satu alternatif yang digunakan adalah minyak cengkeh. Penelitian ini bertujuan untuk mengetahui konsentrasi optimal minyak cengkeh terhadap waktu induksi dan waktu pulih ikan zebra blacktail (<em>Dascyllus melanurus</em>). Sampel yang digunakan ditangkap tanpa mengggunakan sianida. Akuarium berukuran 30 x 40 x 50 m diisi dengan air laut. Kemudian dimasukkan beberapa konsentrasi minyak cengkeh yang berbeda (20, 30, 40, 50 dan 60 ppm). Pengamatan terhadap tingkah laku dilakukan untuk menentukan waktu induksi dan waktu pulih. Hasil penelitian menunjukkan waktu induksi terlama terdapat pada konsentrasi 20 ppm dengan waktu rata-rata 321,33 detik dan waktu induksi tercepat terdapat pada konsentrasi 60 ppm dengan waktu rata-rata 28,33 detik. Waktu pulih terlama terdapat pada konsentrasi 20 ppm dengan waktu rata-rata 188,33 detik dan waktu pulih tercepat terdapat pada konsentrasi 40 ppm dengan waktu rata-rata 80,67 detik. Penelitian ini menunjukkan bahwa konsentrasi minyak cengkeh 40 ppm merupakan konsentrasi yang paling efektif dalam proses penangkapan ikan zebra blacktail (<em>Dascyllus melanurus</em>) dengan waktu induksi berkisar 40 – 48 detik dan waktu pulih berkisar 72 – 91 detik.</p><p class="TubuhTulisanAll" align="left"><strong>Kata kunci:</strong> minyak cengkeh, waktu Induksi, waktu pulih, ikan zebra blacktail</p>
45
Marçal Júnior, Oswaldo, Luiz Koodi Hotta, Rosa Maria de Jesus Patucci, Carmen Moreno Glasser, and Luiz Candido de Souza Dias. "Schistosomiasis mansoni in an area of low transmission: II. Risk factors for infection." Revista do Instituto de Medicina Tropical de São Paulo 35, no. 4 (August 1993): 331–35. http://dx.doi.org/10.1590/s0036-46651993000400005.
Full textAbstract:
Risk factors for Schistosoma mansoni infection were identified using a 1:1 matched case-control design. The work was conducted in the municipality of Pedro de Toledo, São Paulo State, Brazil, an area where the snail host is Biomphalaria tenagophila. Information on water contact patterns, knowledge, attitudes and pratices (kap), socioeconomic and sanitary conditions were obtained by mean of questionnaires. The crude odds ratio estimates and the adjusted odds ratio estimates using the logistic regression model are presented. Most of the examined individuals admitted recent water contacts (90.6% of the cases). The most frequent reason for contact was swimming, playing and fishing and the preferential site of contact was the river. According to the logistic regression technique, the main risk factors for infection were: a) water contact through swimming, playing and fishing; b) fording; c) bad hygiene. We concluded that recreational activities are the main reasons for schistosomiasis transmission in Pedro de Toledo and leisure alternatives should be offered to the local population.
46
Goulart, M. A., C. S. Braga, C. Lira, D. B. Amorim, A. S. Macedo, and M. M. Alievi. "Intercostal celiotomy for removal of proventriculus foreign body in muscovy duck (Cairina moschata): case report." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 71, no. 3 (June 2019): 805–10. http://dx.doi.org/10.1590/1678-4162-10044.
Full textAbstract:
ABSTRACT Ducks, geese and swans are included in the Anatidae family, Anseriformes order. The leading injuries causes to waterfowl are tangling in fishing materials and foreign bodies ingestion. A muscovy duck (Cairina moschata) was referred for treatment at Veterinary Teaching Hospital and a radiographic examination showed the presence of a hook in the coelom. Surgical exposure and incision of the proventriculus was made through left intercostal access and the hook along with a fishing line were gently removed. The animal began to feed voluntarily at the fourth post-operative day and two weeks after the procedure the patient was clinically well and was released to wild. This surgical approach differs in some aspects from the listed techniques in the known literature. It proved to be a viable and appropriate alternative to treat this affection since it did not cause any trans- or post-operative complications and enabled rapid recovery and subsequent patient release.
47
Fatema, K., and M. Nur. "Status of the Fishermen Living at the Tangon River Bank- A Case Study from the North-west of Bangladesh." Journal of Environmental Science and Natural Resources 13, no. 1-2 (July 6, 2022): 70–75. http://dx.doi.org/10.3329/jesnr.v13i1-2.60691.
Full textAbstract:
This study intended to provide information on the fishermen engaged in fishing in the Tangon River, Thakurgaon. To assess their existing status, some essential socio-economic information e.g. literacy, religion, health hazards, sanitation and medical facilities, family structure, income level, types of fishermen, fishing, and constraints were taken into account. Results indicated that the majority of the fishermen (77%) belonged to the age class >35-50 years and were dominated by Muslims (89%). Three educational categories were recorded where illiteracy was main (52%), 24% had a primary level of education, and 24% could only sign. This survey revealed that the fishermen near Tangon River are leading measurable life due to great financial hardship. Therefore, proper conservation and management measures must be taken to enhance the fisheries biodiversity in the river so that the fishermen can harvest sufficient fish on a sustainable basis. The government, as well as non-government organizations (NGOs), should take appropriate initiatives to enhance their living standard and to improve such techniques/alternatives that can benefit the underprivileged fishermen to hold present fishing profession in the Tangon River.
Environ. Sci. & Natural Resources, 13(1&2): 70-75, 2020
48
Suryawati, Siti Hajar, and Agus Heri Purnomo. "STRATEGI DAN KEBIJAKAN PENGELOLAAN TERUMBU KARANG COREMAP DI WILAYAH CORAL TRIANGLE DI INDONESIA TIMUR." Jurnal Kebijakan Sosial Ekonomi Kelautan dan Perikanan 2, no. 2 (December 18, 2012): 113. http://dx.doi.org/10.15578/jksekp.v2i2.9279.
Full textAbstract:
Tulisan ini mengusulkan sejumlah rekomendasi untuk perbaikan pengelolaan sumber daya terumbu karang di wilayah Coral Triangle Indonesia, yang didasarkan atas hasil penelitian pada Tahun 2011, di lokasi-lokasi Coral Reef Rehabilitation and Management Program COREMAP). COREMAP adalah program pengelolaan sumber daya terumbu karang yang merupakan wahana utama Kementerian Kelautan dan Perikanan untuk mengimplementasikan kebijakan pengelolaan terumbu karang. Kebijakan tersebut dilatar-belakangi oleh degradasi yang terjadi pada sumber daya terumbu karang dan besarnyapotensi serta pentingnya fungsi dari aset alam tersebut. Metode yang diacu untuk penyusunan rekomendasi ini adalah analisis Sistem Sosial Ekologis (SES) dan analisis resiliensi yang mencakup perilaku positif dan negatif dalam pengelolaan sumber daya terumbu karang, dilanjutkan dengan analisis Multi Criteria Decision Making (MCDM) terhadap perilaku-perilaku pengelolaan negatif. Data dalam penelitian ini mencakup aspek sistem sosial-ekologi, kerentanan dan resiliensi, yang diperoleh dari 1.244 responden masyarakat yang dipilih secara purposive dan 182 responden tokoh yang diperoleh dengan teknik snowball serta data sekunder yang diperoleh dari kepustakaan dan dokumentasi terkait. Hasil penelitian ini secara umum merekomendasikan 4 (empat) perbaikan terhadap kebijakan pengelolaan yang ada. Keempat rekomendasi tersebut adalah: 1) Peningkatan efektivitas Kawasan Konservasi Laut Daerah (KKLD) atau Taman Wisata Air Laut (TWAL) melalui penguatan kerjasama masyarakat-pemerintah dalam upaya-upaya menciptakan mata pencaharian alternatif, terutama di sektor non konvensional seperti pariwisata; 2) Memfokuskan pada intensifikasi pembentukan lembaga keuangan yang mendukung permodalan usaha dan perbaikan teknologi; 3) Perbaikan sistem koordinasi pihak terkait dalam pengawasan terhadap sumber daya; dan 4) Perbaikan desain program sosialisasi penggunaan alat tangkap ramah lingkungan. Title: STRATEGI DAN KEBIJAKAN PENGELOLAAN TERUMBU KARANG COREMAP DI WILAYAH CORAL TRIANGLE DI INDONESIA TIMUR This paper proposes recommendations to improve management for the resource management in the Indonesian’s part of Coral Triangle Area, based on a research carried out in the COREMAP locations in 2011. COREMAP is a program introduced by the Ministry of Marine Affairs and Fisheries to implement its policies on coral reef management and conservation. The policies concern the ongoing alarming degradation of the resource and the disappearing physical existence as well as functions of such natural capital. The research methods were Social Ecological System (SES) analysis and resilience analysis covering both negative and positive management practices, followed by a Multi Criteria Decision Making (MCDM) analysis of the negative management practices to come up with prioritized strategy recommendations. Data used consisted of social-ecological system, vulnerability and resilience aspects, collected from 1.244 respondents representing ordinary citizens selected purposively and 182 key persons which were determined following the snowball sampling technique, and secondary drawn upon the documented files of relevant institutions. In general, the recommendation proposed through this paper are as follows: 1) Increasing the effectiveness Regional Marine Conservation Area and Marine Tourism Park by strengthening community-government cooperation aimed at creating alternative livelihood , particularly the nonconventional sectors, more specifically tourism, 2) Focusing on the intensification of the establishment of financial institutions to facilitate better access for business capital provision and technological improvements; 3) improvement of coordination system among local influential institutions in controlling the resource; and 4) improved design of outreach programs on the use of environmentally friendly fishing gear.
49
Inten Melinia, Ida Ayu Made, I. Dewa Nyoman Nurweda, and I. Gusti Ngurah Putra Dirgayusa. "Aplikasi Penginderaan Jauh Citra Landsat-8 Untuk Pembuatan Peta Batimetri Di Perairan Pantai Jumpai, Klungkung, Bali." Journal of Marine Research and Technology 6, no. 2 (August 28, 2023): 136. http://dx.doi.org/10.24843/jmrt.2023.v06.i02.p09.
Full textAbstract:
Klungkung Regency is the smallest regency in the province of Bali, Indonesia. The waters of Jumpai Beach are one of the areas in Klungkung, which is one area that is used by the surrounding population for fishing activities for fishermen to obtain fishery products. Remote sensing technology has been applied because of its effectiveness and the significance of its use in compiling and revising resource maps. It is also helpful to support resource planning and management. A bathymetry map is a map that describes the depth of the sea and is presented using contour lines. Contour lines are abstract lines connecting several locations or areas with the same height or depth. Remote sensing techniques are available to determine the ocean’s depth because the air has signals from the very bottom of the ocean with strong solid wavelengths. However, the penetration of electromagnetic energy is limited. Therefore, remote sensing techniques are adopted to infer water depth and shallowness. One of the satellites that can be used for bathymetry mapping is Landsat-8. Landsat imagery has a spatial resolution of 30 meters, complemented by the visible channels required to extract bathymetric maps. Accurate estimation of shallow water area bathymetry for the safety of small boat navigation such as fishing and for benthic studies. Remote sensing technology can be considered one of the most desirable alternative tools for bathymetry development.
50
Suárez-Medina, María Dolores, María Isabel Sáez-Casado, Tomás Martínez-Moya, and Miguel Ángel Rincón-Cervera. "The Effect of Low Temperature Storage on the Lipid Quality of Fish, Either Alone or Combined with Alternative Preservation Technologies." Foods 13, no. 7 (April 3, 2024): 1097. http://dx.doi.org/10.3390/foods13071097.
Full textAbstract:
Marine foods are highly perishable products due to their high content of polyunsaturated fatty acids, which can be readily oxidized to form peroxides and secondary oxidation products, thus conferring such foods undesirable organoleptic characteristics and generating harmful compounds that are detrimental to the health of consumers. The use of preservation methods that minimize lipid oxidation is required in the fishing and aquaculture industries. Low temperature storage (chilling or freezing) is one of the most commonly used preservation methods for fish and seafood, although it has been shown that the oxidation of the lipid fraction of such products is partially but not completely inhibited at low temperatures. The extent of lipid oxidation depends on the species and the storage temperature and time, among other factors. This paper reviews the effect of low temperature storage on the lipid quality of fish, either alone or in combination with other preservation techniques. The use of antioxidant additives, high hydrostatic pressure, irradiation, ozonation, ultrasounds, pulsed electric fields, and the design of novel packaging can help preserve chilled or frozen fish products, although further research is needed to develop more efficient fish preservation processes from an economic, nutritional, sensory, and sustainable standpoint.