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Hofmarcher, Paul, Cuaresma Jesus Crespo, Bettina Grün, and Kurt Hornik. "Fishing Economic Growth Determinants Using Bayesian Elastic Nets." WU Vienna University of Economics and Business, 2011. http://epub.wu.ac.at/3213/1/Report113.pdf.
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We propose a method to deal simultaneously with model uncertainty and correlated regressors in linear regression models by combining elastic net specifications with a spike and slab prior. The estimation method nests ridge regression and the LASSO estimator and thus allows for a more flexible modelling framework than existing model averaging procedures. In particular, the proposed technique has clear advantages when dealing with datasets of (potentially highly) correlated regressors, a pervasive characteristic of the model averaging datasets used hitherto in the econometric literature. We apply our method to the dataset of economic growth determinants by Sala-i-Martin et al. (Sala-i-Martin, X., Doppelhofer, G., and Miller, R. I. (2004). Determinants of Long-Term Growth: A Bayesian Averaging of Classical Estimates (BACE) Approach. American Economic Review, 94: 813-835) and show that our procedure has superior out-of-sample predictive abilities as compared to the standard Bayesian model averaging methods currently used in the literature. (authors' abstract)Series: Research Report Series / Department of Statistics and Mathematics
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Holtrop, G. "Statistical modelling of the selectivity of trawl nets." Thesis, University of Aberdeen, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263211.
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This thesis develops statistical methodology for modelling the selectivity of fishing nets, using data from covered codend experiments of fishing trawls. First, the effects of subsampling an experimental catch instead of measuring the entire catch are investigated. Often the subsample is not taken at random. This leads to bias in the selectivity parameter estimates. Simulations show that the effects of non-random subsampling are minimised when equal proportions are sampled from the test and the control net. A model is developed for describing the selectivity of a net with a window panel inserted. This model quantifies the selectivity of both the codend and the window panel, which can then be combined. The model is used to investigate the selectivity of different window panels and their contribution to the combined selectivity. Traditionally, selectivity has been modelled as a fixed and random effects model, estimated in two stages. As an alternative, Markov chain Monte Carlo techniques are explored. A Bayesian selectivity model is formulated, and the effect of the prior distribution on the variance components is investigated. The posterior distribution is relatively insensitive to a prior distribution having variation of similar magnitude as the variation present in the data. For model selection, the p-value approach applied to the posterior marginal densities is more useful than the Bayes and pseudo-Bayes factors. The Bayesian selectivity model is extended to include variation between seasons and variation between trips. The new model is applied to a data set containing seasonal variation. Finally, a Bayeisan multi-species model is developed that accounts for dependencies between species. This gives more precise selectivity parameter estimates. It also reduces bias in the parameter estimates by accounting for mechanisms behind non-random missing data.
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Perez-Comas, José Antonio. "Assessment of mesh size selectivity under commercial fishing conditions /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/5368.
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Arky, Aaron S. "Trading nets for guns the impact of illegal fishing on piracy in Somalia." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5115.
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Approved for public release; distribution is unlimitedSomali piracy reached a record high level in 2008, with 111 of the 293 worldwide attacks occurring in the waters surrounding Somalia. The incidence of piracy in Somali waters almost doubled in 2009, and the Somali share of total piracy attacks worldwide increased from under 40% to over 50%. Often overlooked is the initial upsurge in piracy, following the Indian Ocean tsunami in December 2004, which contributed to a sharp increase in piracy in 2005 and again in 2008. This thesis addresses why this initial surge occurred when it did. This increase can be attributed to the transformation of the pirate business model from fishermen who started to defend themselves, to the organized crime that displaced them in 2004 due to the opportunistic behavior of warlords. A convergence of factors contributing to the conditions at the time of the tsunami had shortterm effects in 2005 that were enough to provide a boost to the already increasing business model of piracy.
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Chu, Franky K. Y. "A numerical procedure for the prediction of the flow field and resistance of fishing nets." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27832.
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This thesis presents a numerical model for the calculation of the flow field and resistance of a fishing net. This numerical method is based on the potential flow theory and an empirical formula to predict the force acting on a mesh of the netting.
An experiment to determine the shape, flow field, and the resistance of a conical net has been carried out in the flume tank at the Marine Institute located at St. John's, Newfoundland, and the experimental results are presented as well.
The net drag force obtained by this numerical procedure is compared with the flume tank experiments as well as with methods developed by other researchers. Although the result from the numerical model does not agree well with some methods developed by other researchers, it does have better agreement with the results obtained from the flume tank experiments. The flow field around the fishing net calculated by the numerical model at various incoming velocities is obtained.Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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Bezerra, Janderson Meireles, and 92-991323990. "As redes comerciais da pesca e o urbano no amazonas: o caso da Vila de Copatana, município de Jutaí – AM." Universidade Federal do Amazonas, 2018. https://tede.ufam.edu.br/handle/tede/6462.
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The Amazon in general, in terms of human occupation, is known as a demographic void, but it is known today that this discourse does not proceed. There are historical records that prove that the Amazon was always occupied by people who lived in the region. The Amazonian floodplains were so populated that these peoples migrated to populate the rest of the South American continent, as Fausto states (2010, 31). "From their floodplains, as rich as they were fought by an ever-growing population, would have led to migratory waves that would populate the South America¨. In this imaginary context of "demographic", we are struck by the contemporary process of urbanization to which this biome belongs. In this process the Vilas in Alto Solimões / Amazonas, with a total population of more than 1.000 inhabitants. In this work we will deal with the Copatana Village, located in the Alto Solimões / Amazonas microregion belonging to the municipality of Jutaí. The region has agriculture as the main source of income, however, it was the fishing bias that best describes the relationship between the city and the village. In this sense, the main objective of this work was to understand, through commercial fishing networks, the role of Copatana Village in the structuring of the urban network of the Alto Solimões / Amazonas microregion. In order to achieve this objective, it was extremely important to implement monitoring. This was one of the options we thought and carried out as one of the ways of collecting primary data, in this case, fishing. Tracking was inspired in the works of VanVliet et al. (2015) and TavaresPinto (2015), both conducted their research on wild animal hunting networks on the Brazil- Peru-Colombia triple border. Due to the lack of specific secondary data for the site, the field work carried out in the town of Copatana was crucial for the research and understanding of the processes that occur. At the end of the research, it was concluded that the commercial fishing network and the urban network in Amazonas are totally interconnected from the town of Copatana, in the municipality of Jutaí, to cities like Tabatinga and Manaus or other cities outside the state and the country through commercial fishing networks.
A Amazônia de forma geral, em termos de ocupação humana, é conhecida como um vazio demográfico, mas sabe-se hoje que esse discurso não procede. Existem registros históricos que comprovam que a Amazônia sempre foi ocupada por povos que viviam na região. As várzeas amazônicas eram tão povoadas que estes povos migravam para povoar o resto do continente Sul- Americano, como afirma Fausto (2010, p. 31) "De sua várzea, tão rica quanto disputada por uma população sempre crescente, teriam partido levas migratórias que iriam povoar a América do Sul". Neste contexto imaginário de "vazio demográfico" nos chama a atenção o processo contemporâneo de urbanização a qual este bioma se insere. Neste processo ressaltam-se as Vilas no Alto Solimões/Amazonas com população total acima de mil habitantes. Neste trabalho trataremos sobre a Vila de Copatana, localizada na microrregião do Alto Solimões/Amazonas pertencente ao município de Jutaí. A região possui a agricultura como principal fonte de renda, contudo, foi pelo viés da pesca que melhor conseguimos descrever as relações existentes entre a cidade e a Vila. Neste sentido, o trabalho teve como principal objetivo compreender por meio das redes comerciais de pesca o papel da Vila de Copatana na estruturação da rede urbana da microrregião do Alto Solimões/Amazonas. Para alcançar tal objetivo, foi de suma importância a implantação de um monitoramento foi uma das opções que pensamos e realizamos como uma das formas de colher dados primários, neste caso, de pesca. O monitoramento foi inspirado nos trabalhos de Van-Vliet et al. (2015) e Tavares-Pinto (2015), ambos realizaram suas pesquisas sobre as redes de caça de animais selvagens na tríplice fronteira Brasil-Peru-Colômbia. Devido à quase inexistência de dados secundários específicos para o local os trabalhos de campo realizados na Vila de Copatana foram cruciais para a pesquisa e o entendimento dos processos que ocorrem. Ao final da pesquisa chegou-se à conclusão de que a rede comercial da pesca e o urbano no Amazonas está totalmente interligado desde a Vila de Copatana, no município de Jutaí, às cidades como Tabatinga e Manaus ou outras cidades fora do estado e do país por meio de diversas redes comerciais de pesca.
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Larsson, Joel, and David Forsberg. "Submarine Fishing Assistant." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-352842.
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Humanity has been fishing for a long time, more specifically underice with nets, this could be a lot more efficient if it could beautomated in any stage of the procedure. The project aim is toconstruct an automated system for assisting in net fishing under ice.A navigation system using a GPS module, an IMU and radio transceiverwas designed, constructed and implemented on a car for testing. Theresult was a system that could navigate to either a predeterminedpoint or return to a point saved by the system. A "manual mode" wasalso implemented to be able to operate the system as a remotecontrolled car with a computer coupled to an Arduino with a radiotransceiver sending control signals to the prototype. The prototypeworked as intended, but would need further improvements to theautomated navigation system's precision to be ready for commercialuse. This should be the primary focus of any further development ofthis project.
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Chartsiri, Chamaikarn Pai. "Sitting with The Fisherman." Thesis, Konstfack, Textil, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5181.
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The scene of a local motorcycle taxi driver hand-knitting a small fishing net at his stand next to a canal will never fade away from my childhood memory. It was the first time I saw the life behind the fishing net. Throughout my textile practice, I’ve reconsidered the fishing net with curiosity and nostalgia. Behind its mesh and diamond shaped structure, I see craftsmanship and the story of its creation. I would like to preserve and encourage these precious values in the net with my Master project Sitting with The Fisherman. The fishing net is reinterpreted to everyday life with a trace of stories within it. The net becomes a tool to gather people together like the fishing net does in the fisherman village. This project will be a pilot idea to others in different contexts, to preserve their precious traditional craftsmanship, to keep it alive by transforming the skill and technique to a new interpretation.
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Rony, Mohammad. "Impact investing & Aboriginal community economic development : from fishing net to financial net." New Leaf Associates, Inc, 2014. http://hdl.handle.net/1993/31272.
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Impact investing is growing as a development approach to bring about positive social, environmental and economic impact for marginalized people in the developing world. But existing in a developed country like Canada, the Aboriginal communities are not getting enough attention due to lack of capacity, state dependency, state policies and negative perception among the stakeholders in the financial ecosystems. This thesis followed mixed methods participatory action research approach and had a deeper look on the present investment ecosystem and identified many barriers to investment for Aboriginal cooperative or social enterprise including negative stereotypes regarding Aboriginal communities impeding investing in cooperative or social enterprise. However, proper education, financial inclusion, awareness among stakeholders and engaging micro-investors in Aboriginal enterprises could improve the situation and develop opportunities for both the supply and demand side.May 2016
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Lazauskas, Darius, Julia Jacka, and Ingrida Kažemėkaitė. "Rage, giggles and fishing for clicks : A qualitative study on how clickbaiting affects perceived online news content quality." Thesis, Linnéuniversitetet, Institutionen för marknadsföring (MF), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-75384.
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Purpose The purpose of this study is to explore how the use of clickbait marketing strategies by online news outlets affects consumer perceptions of online news content quality. Design/methodology/approach A qualitative, deductive, exploratory and cross-sectional method, wherein data was collected through semi-structured interviews to understand consumer perceptions of how the use of clickbait strategies affects perceived online news content quality. The gathered data was then analyzed with the help of a directed content analysis supported by qualitative content analysis software Atlas.Ti. Findings This study found that the use of clickbait content strategies affected the perceived quality of online news content. Furthermore, it was found that there are two primary consumer groups, one of which seeks to avoid clickbait and one of which seems to engage with clickbait. Finally, several new variables were found for perceived news content quality that applied in the online space. Research limitations/implications The main implications of this research are that clickbait strategies should be utilized cautiously as they are often found misleading or displeasing, and may cause damage to the publisher. Furthermore, despite clickbait sometimes being entertaining, most clickbait was found to be highly context sensitive. Finally, a number of new variables were found that expanded previous understandings of perceived news quality. This study was limited by several factors - firstly, a lack of english as a first language which may have resulted in misunderstandings. Secondly, the articles utilized were found to have several shortcomings during the research procedure. Finally, due to the qualitative nature of this study, its findings are non-generalizable.
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O'Neill, Finbarr Gerard. "Mathematical model of trawl cod-end geometry." Thesis, University of Aberdeen, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265381.
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To ensure that the conservation regulations which govern fishing gears are effective, they must be based on an understanding of the process by which fish are selected. The region where most fish selection is considered to take place is the cod-end, the aftmost part of a trawl net and the region where the catch accumulates. In recent years, it has become increasingly apparent that fish selection in the cod-end is dependent on a range of physical, environmental and fish behavioural parameters. Essential to a study of any of these parameters is a knowledge of the cod-end geometry which is determined by the interaction of the water flow, the catch size and the design and physical characteristics of the netting. In this thesis a continuum model of the deformation of a class of axisymmetric networks is developed where the mesh elements are reflection symmetric, the mesh bars are extensible and where arbitrary membrane forces act in the plane of the net, normal to the edges of the mesh elements. When applied to the fishing industry this provides a continuum model of the geometry of an axisymmetric trawl cod-end made from netting of a generalized mesh shape. It is shown how mesh shapes that are of interest to the fishing industry can be investigated, and the geometry of cod-ends made from diamond shaped mesh under the influence of various types of pressure loads is examined in detail. A qualitative description of the hydrodynamic forces that act on the cod-end catch is presented and it is shown that the predictions based on this description are consistent with experimental results from a series of wind tunnel trials. Using this description of the hydrodynamic forces the effect on cod-end geometry of mesh resistance to opening which arises as a result of twine flexural rigidity is examined.
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Mushongera, Darlington D. "Poverty dynamics and livelihood challenges among small-scale fishing communities on lake Kariba - Zimbabwe." University of the Western Cape, 2013. http://hdl.handle.net/11394/4272.
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Magister Philosophiae - MPhilPoverty dynamics and livelihood challenges among small-scale fishing communities on Lake Kariba (Zimbabwe) The aim of this study was to assess poverty among small-scale fishing communities on Lake Kariba (Zimbabwe) as well to as identify livelihood challenges that confront them. Two fishing communities were used as case studies and were uniquely selected from among the many fishing camps/villages dotted along the Zimbabwean shoreline of Lake Kariba. Depending on gear type, fishing activities on Lake Kariba target both the smaller-sized Kapenta species and larger species such as the bream and the tiger. Fishing activities are a major livelihood source for fishers in the two case studies upon which they obtain food and derive income to address other family needs. Mutual linkages and exchanges also exist between fishing camps/villages and communal areas where land-based activities such as cropping and livestock rearing are carried out. Before fieldwork, there was a pre-conceived notion that members of fishing communities on Lake Kariba were very poor. Although the fishers expressed desires for a better life than they were experiencing, they did not consider themselves poor. Instead, they rated their economic position as well off compared to some of their urban counterparts. However, on further interrogation, the study revealed that the fishers were facing a set of vulnerabilities that is commonly associated with the fishing profession. These vulnerabilities had substantial impacts on the livelihood system of these fishers. Using vulnerability ladders, a picture was painted depicting the severity of these vulnerabilities. It emerged that fishers were more vulnerable to existing state institutions that are designed to manage access to and the use of natural resources in the country. There are several reasons to suggest why this is the case which include, (i) the high cost of accessing the fishery, (ii) the stern measures in place that restrict access to and use of the fishery, and (iii) the punitive measures imposed for contravening rules of access and use of the fishery. Although restricting access is in line with the principle of long run sustainability of the fishery, it may threaten the development of the fishing industry and impact negatively on livelihoods of communities involved. Unlike fisheries elsewhere in the world, Lake Kariba is not viewed as a vehicle for reducing poverty and achieving food security. On the contrary, government places emphasis on preserving and enhancing the natural environment both aquatic and non-aquatic with a view to sustaining tourism. Under such a paradigm, fishing is viewed as a threat to the natural environment and requires strict management. Heavy fines are therefore imposed on users that violate the rules of access. Many of the fishers have had their properties attached after failing to raise the necessary amounts to cover the fines. By shifting away from the promotion of fisheries, government has accelerated the decline of the small-scale fishing industry on Lake Kariba, through narrowing the fishers action space and creating an environment conducive for corruption. The decline has subsequently shrunk the livelihoods base of local communities as well as many others who are associated with the fishing industry. While the sustainability of the fishery is paramount, government needs to reconsider its strategy on governing and managing fisheries on Lake Kariba. Given enough support, small-scale fisheries on Lake Kariba have the potential to contribute significantly to the country’s Gross Domestic Product. Small-scale fisheries have also proved their resilience in the wake of the severe economic crisis that Zimbabwe experienced between 2007 and 2009. During this period, there were widespread shortages of basic food items in the country and the demand for fish and fish products rose drastically. The fishers reported that there was an increase in the demand for fish during the crisis period to the extent that they could not supply enough to satisfy the market. This supports the observation by the United Nations (2010) that fisheries, in particular small-scale, can play an important role in the economy in terms of livelihoods, poverty reduction and food security. Fishing activities are also the perfect complement to other land-based livelihood activities for communities that live in close proximity to large water bodies.
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Allerston, Patricia. "The Ring Net : ring net herring fishing on the west coast of Scotland : a documentary exhibition by Will Maclean." Thesis, University of St Andrews, 1991. http://hdl.handle.net/10023/7071.
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This dissertation focuses on The Ring Net, a documentary exhibition by the artist Will Maclean. The Ring Net is a collection of drawings, photographs and printed plans numbering more than three hundred and forty items, which was originally shown at the 'Third Eye Centre, Glasgow in 1978. It subsequently toured to various venues, mostly in Scotland, and was later bought by The Scottish National Gallery of Modern Art, Edinburgh where it is presently held. The project is based on a particular method of sea fishing which used to be practised on the West Coast of Scotland. The subject of fishing is a consistent feature in the work of Maclean, although this particular undertaking is somewhat unusual as the artist has chosen a documentary approach. The initial period of research for the project was enabled by an Edinburgh-based charitable organisation, the Scottish International Education Trust. The artist continued to work on the project for some time afterwards, and the eventual exhibition was not shown until four and a half years later. The aim of this dissertation is to look at The Ring Net in its context. The period of its making is explored in some depth, as is the showing of the project at the Third Eye Centre and the various venues included in its tour. Though the methods and media used in The Ring Net are discussed, they do not constitute the main objective of the work. More space has been devoted to the documentary aspect of the project and the effect this had on the finished result. Unpublished sources such as a series of letters from the artist to a collaborator in Kintyre have been used to some extent.
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Persson, Mikaela. ""It's like going fishing without a fishing-net" : a study on how students in Tanzania perceive the transition of language of instruction from Kiswahili to English." Thesis, Högskolan Kristianstad, Sektionen för lärande och miljö, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-11873.
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The purpose of this study is to contribute to previous research on the subject of language transition in Tanzania. The aim is also that the information gained in this study can be used to improve students' prospects when they undergo the linguistic transition from primary school to secondary school. This is a qualitative study with quantitative elements, using method triangulation, which examines how students experience the linguistic transition from Kiswahili to English and how it affects them. The study also highlights the students' own opinions about which language they would prefer as the language of instruction in secondary school. Relevant information about the history of Tanzania and the linguistic situation in the country are outlined. Previous research on the subject is also presented. The two theories that are used are Bourdieu’s social theory and Said's theory of Orientalism. The study uses focus groups and surveys in oder to answer the questions at hand. The research itself is conducted in two government schools in Dar es Salaam in Tanzania. The three questions at issue are as follows: Do the students feel that they have sufficient knowledge of English in order to be ready for the transition of the language of instruction from Kiswahili to English in secondary school? How do the students perceive that the transition of languages affects their performance in school and in their future? If the students had the opportunity to choose, which language would they prefer as the language of instruction in Secondary school in Tanzania? The conclusions are that the students feel that the linguistic transition is difficult and that they lack sufficient knowledge of English. Although several of the students struggle with the vocabulary and the pronunciation, they feel that English is the path to higher education and a good job. These are contributing factors to the fact that the majority of the students prefer English as their language of instruction in secondary school, to their own national language, Kiswahili.MFS-uppsats
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James, I. "Beach-seine net fishing : an analysis of the economic conditions and environment of the fishery in False Bay." Bachelor's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/25782.
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This paper examines the economic effects of management policies on four of the seven beach-seine net fishing operations in False Bay. The effects of past regulations are examined by assessing whether or not this industry is at present profitable. It was found that under the present management policies all fishing crews are profitable. A new policy preventing fishermen from catching white steenbras has been introduced. This was examined and it was shown that only one of the crews examined would be effected. Two proposed policies were examined to determine their impact on the sector. The first proposal aims to remove kob as a target species, however none of the crews would be significantly effected by this proposal. The second proposal aims to restrict fishing to working days, this proposal would result in collapse of two crews. Long term feasibility was examined using three models that predict the NPV of income for each crew under different assumptions. It was shown that if stocks continue to decline and white steenbras remains restricted all crews except one would collapse. If stocks improve but the catching of white steenbras remains prohibited for IO years, one of the crews will collapse. The final section assessed the validity of a proposal that the Marine Resource Fund be used to buy trek fishermen's permits, it was concluded that this is not a feasible proposal.
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Srinoparatwatana, Chongdee. "Population biology of two key fish species and the dynamics and management of the trap fishery in Beung Borapet, Thailand." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2009. https://ro.ecu.edu.au/theses/2093.
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Inland water bodies provide important fisheries resources in Thailand and elsewhere in south-east Asia, yet there is limited information on the biology of important species and catch rates in fisheries, and limited assessment of management strategies such as Freshwater Protected Areas. This study has provided important information on aspects of the biology of knifefish (Notopterus notopterus) and catopra (Pristolepis fasciatus), two dominant freshwater fish species in Thailand, as well as catch and effort trends in the trap fishery and the influence of a Freshwater Protected Area (FPA) on fish communities in Beung Borapet, a large freshwater swamp and an international important wetland in Central Thailand (15ºN; 100ºE).
Both N. notopterus and P. fasciatus were shown to be the most dominant species using traps in fisheries-independent (18.3 and 23.2%, respectively) and fisheries dependent (31.2 and 22.9%, respectively) studies, and were therefore shown to be important species in Beung Borapet. Female N. notopterus reached maturity at 178 mm TL, while female P. fasciatus reached maturity at about 70 mm TL. Both species spawned throughout most of the year, with peak spawning between June and August when rainfall peaked and water levels were rising for N. notopterus and between April and September when water temperature and daylight length were peaking for P. fasciatus. Furthermore, both species are multiple spawners, with the former exhibiting low batch fecundity (approximately 113 and 864 eggs) and the latter showing high batch fecundiy (approximately 10,000 and 62,000 eggs). The high batch fecundity and the daily spawning of P. fasciatus is would result in a high total fecundity for the species. The sex ratio of P. fasciatus exhibited a slight male bias in fish <100 mm, but this reverse to a clear female bias in larger fish. For both species, growth parameters could not be determined using either cohort analyses from length frequency data, or length-at age data from growth increments in hard structures such as scales and otoliths.
The catch composition of the trap and gillnet fishery in Beung Borapet was dominated by five species, namely P. fasciatus, N. notopterus, Oreochromis niloticus, Cyclocheilichthys repasson and Cyclocheilichthys apogon. Traps tended to catch larger fish of more marketable size than gill nets, especially for N. notopterus and O. niloticus. The trap fishery yielded approximately 92 tonnes (2.9 kg/hectare) of fish per year, which was valued at nearly 3 Million Baht (~$US 80,000), which provided an average net income of 83,000 Baht (~$US 2,100) for a fulltime trap fisher in Beung Borapet.
Spatial closure management is a strategy used throughout the world for protecting aquatic biodiversity and promoting fish production. The FPA in Beung Borapet contained lower overall densities and biomass of fish than the fished area, but there were inconsistent patterns among fish species. Some dominant species, such as Cyclocheilichthys enoplos and Amblyrhynchichthys truncatus, had higher densities, while others, such as P. fasciatus and O. niloticus, had lower densities in the FPA. Furthermore, larger sizes of only a few dominant species were observed in the protected zone, e.g. P. fasciatus and N. notopterus. The benefits of the FPA for fisheries enhancement and conservation of biodiversity appear to be limited due to observed illegal fishing activities in the zone as well as higher turbidity related to point-source impacts observed in other studies. Management of the conservation zone in the region requires a combination of top-down and bottom-up approaches and scientific information to improve the effectiveness of FPAs. Fisheries management needs to focus on both the resources and the stakeholders to minimize conflict among different stakeholders and inform them of conservation issues for their natural resources to promote their participation in the management strategies.
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Lima, Bruna Barros. "Estrutura atual da pesca artesanal e estimativa do autoconsumo de pescado entre pescadores artesanais do estuário da Lagoa dos Patos, RS, Brasil." reponame:Repositório Institucional da FURG, 2012. http://repositorio.furg.br/handle/1/4172.
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Dissertação(mestrado) - Universidade Federal do Rio Grande, Programa de Pós–Graduação em Oceanografia Biológica, Instituto de Oceanografia, 2012.Submitted by Cristiane Gomides (cristiane_gomides@hotmail.com) on 2013-11-18T16:09:12Z No. of bitstreams: 1 BRNA.pdf: 776201 bytes, checksum: 2dd5a6dcf1118a798cbd5a740899215e (MD5)
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O presente trabalho é dividido em dois capítulos, os quais apresentam estudos realizados em três comunidades de pescadores do estuário da Lagoa dos Patos: a São Miguel, o Bosque e a Torotama. O primeiro capítulo trata da estrutura da frota da pesca artesanal na região e sua evolução ao longo do tempo. Foram entrevistados 20 pescadores de cada comunidade, que responderam perguntas com relação aos seus petrechos de pesca e sua visão com relação a mudanças ocorridas no setor. Observou-se uma tendência à diminuição do tamanho de malha das redes, assim como o aumento da potência dos motores, o que evidencia um aumento de esforço pesqueiro quando comparado a décadas passadas. Os pescadores têm consciência das alterações que a pescaria vem sofrendo. O segundo capítulo aborda um assunto pouco estudado no Brasil, o autoconsumo dos pescadores artesanais, ou seja, a quantidade e o tipo de pescado consumido pelos pescadores e seus familiares daquilo que é capturado por eles próprios. Foram entrevistados periodicamente 10 pescadores de cada comunidade, de setembro de 2010 a dezembro de 2011. Coletaram-se informações pessoais sobre a atividade pesqueira e autoconsumo de pescado. O consumo médio anual por pessoa foi de 38,57 kg. A primavera e o verão foram as estações de maior consumo, sendo a corvina e o camarão-rosa as espécies mais consumidas nessas estações, respectivamente.
This study is divided into two chapters which presents studies done in three fishing communities of Patos Lagoon’s estuary: São Miguel, Bosque and Torotama. The first chapter is about the artisanal fishery’s fleet structure in the region and its evolution in time. Twenty fishermen of each community were interviewed, they answered questions about their vessels and the fishing gears and their vision about the changes that occurred in the sector. It was observed reduction trend in mesh sizes as well an increase of the engine power indicating an increase of fishing effort. Fishermen are aware of the changes the fishery has being undergoing. The second chapter addresses a less investigated issue in Brazil, the artisanal fishery self-consumption, i.e., the amount and type of fish consumed by the fishermen and their family of what is captured by them. Ten fishermen of each community were periodically interviewed, from September 2010 to May 2011. Personal information about the fishing activity and fish selfconsumption was collected. The average annual consumption per person was of 38.57 kg. Higher consumption occurred in spring and summer, the white croaker and the pink shrimp are the most consumed species in these seasons, respectively.
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Jaonalison, Henitsoa. "Les premiers stades de vie des poissons dans le SO de Madagascar : éléments pour une meilleure connaissance de la biodiversité et une meilleure gestion des ressources exploitées." Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0030.
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Les écosystèmes marins qui fournissent de multiples services écosystémiques indispensables au bien-être de l’humanité sont actuellement menacés par la surexploitation des ressources et l’utilisation d’engins destructifs. Ceci conduit à une perte à l’échelle globale de 20% des mangroves, 19% des récifs coralliens et 110 km2 par an des herbiers. Les habitats côtiers qui soutiennent jusqu’à 20% de la production globale de la pêche sont les plus touchés, notamment dans les pays les moins avancés comme Madagascar. Dans ce pays, 87% des écosystèmes récifaux sont menacés, notamment dans le sud-ouest où les petits pêcheurs utilisent des engins prohibés capturant les juvéniles. Une meilleure connaissance de l’écologie des jeunes poissons est donc un point clé pour la mise en place des mesures de gestion efficaces et robustes. D’où l’objet de ce présent travail centré sur les jeunes stades de développement des poissons, identifiés en utilisant le barcoding ADN. Les identifications à l’espèce ont permis de prédire l’approvisionnement en post-larves et de découvrir la variabilité du recrutement en juvéniles qui semble liée à l’altération des apports en post-larves. Au total, 387 espèces ont été observées avec 9 nouvelles espèces pour Madagascar. L’intérêt et les limites du barcoding ADN sont largement discutés (chapitre 1). L’approvisionnement en post-larves a été mieux prédit par les conditions océaniques obtenues par télédétection avec une précision de 60% pour la richesse et 50% pour l’abondance. Pourtant, la performance des modèles pour prédire l’abondance semble influencée par les caractéristiques des masses d'eau qui sont différentes entre les deux sites, tandis que la performance pour prédire la richesse parait similaire entre ces deux sites (chapitre 2). Les conditions océaniques obtenues par télédétection expliquent mieux les assemblages de post-larves. Pourtant, ces conditions océaniques structurent davantage les assemblages de post-larves dans les masses d'eau présentant des caractéristiques d’eaux côtières que ceux dans les eaux présentant des caractéristiques océaniques (chapitre 3). La période de recrutement et les assemblages de juvéniles diffèrent entre les années. Ces variabilités interannuelles ont été aussi observées dans l’approvisionnement en post-larves qui semble conditionné par les variations des conditions océaniques. Ce qui suggère que les altérations des apports en post-larves influencent la distribution temporelle des juvéniles (chapitre 4). Le cas du recrutement des juvéniles de Siganidae, qui semble être fortement en lien avec les apports en post-larves, est développé dans la discussion générale. De même, la localisation des zones de nourriceries a permis de proposer des mesures de gestion tenant compte du contexte local qui sont aussi discutéesMarine ecosystems which provide multiple ecosystem services essential to human well-being are currently threatened by resources overexploitation and the use of destructive fishing gears. This leads to a global loss of 20% of mangroves, 19% of coral reefs, and 110 km2 per year of seagrass meadows. The coastal habitats that support up to 20% of global fisheries production are the most affected, particularly in least developed countries such as Madagascar. In this country, 87% of coral reef are threatened, particularly in the southwestern part of the island where small-scale fishermen practice juveniles fishing. A better knowledge of the ecology of young fishes is thus a key point for the implementation of effective and robust measures. The present work was centred on early developmental stages of fish identified using DNA barcoding. Identifications to the species level were used to predict the post-larvae supply and to discover the variability in juveniles recruitment that appears to be related to the alteration of post-larvae supply. In total, 387 species have been observed with nine new species for Madagascar. The interests and limitations of DNA barcoding are widely discussed in Chapter 1. Post-larvae supply was better predicted by the remotely sensed oceanic conditions with an accuracy of 60% for species richness and 50% for abundance. However, the performance of models for predicting abundance appears to be influenced by the characteristics of water masses that are different among sites, while the performance of models for predicting species richness appears similar between the sites (discussed in Chapter 2). The remotely sensed oceanic conditions better explained the post-larval fish assemblages. However, these oceanic conditions structure mostly the post-larval fish assemblages in water masses with coastal water characteristics than those in waters with ocean characteristics (discussed in Chapter 3). The period of juvenile recruitment as well as juvenile assemblages differ among years. These interannual variabilities were also observed on post-larvae supply which were conditioned by the interannual variation of oceanic conditions. This suggests that alterations in post-larvae supply influence the temporal distribution of juvenile fish, which is a subject discussed in Chapter 4. The case of Siganidae recruitment, which seems to be strongly linked to post-larvae supply, is developed in the final discussion of this thesis. Likewise, the identification of nursery areas allows to propose management measures to deal with the local context that are also discussed
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Huei-Lin, Tzeng, and 曾慧琳. "Operation and development of fishing nets industry in Taiwan." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/58044606150261540176.
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碩士國立高雄海洋科技大學
漁業生產與管理研究所
101
This study uses both quantitative questionnaires and quaulitative interviews to picture Taiwan's net manufacture industry. A total of fifty-one （51） firms accepted interviews, representing 47% of the entire net manufacture industry in Taiwan, in which different scales of manufacturers are included. Their opnions and suggestions are of much credibility. Analysis results of past operational problems and future trends of net manufacturers derived from descriptive statistics, T-test, and important-performance analysis are： 1.Among the operational problems that manufacturers faced, "profit minimized due to difficult access to material or higher material price" is the most severe. 2.Among the solutions to past operational problems, most agreed with "increase production of diversified nets". 3.Among the advantages that keep manufacturers competitive, most agreed with "product quality and durability". 4.Among prospects of net industry's future, most agreed with "sports and leisure industry is trendy". 5.Among possible barriers for net industry's future, most agreed with "high cost of hiring". 6.Among the requirements of sustainably managing net industry, most agreed with "product quality as in durability". 7.The difference between operating smaller and bigger scale fishing net companies are： （1）When facing difficulties, artisanal company operators tend to consider producing other fishing gears and holds positive attitude towards the development of leisure fisheries while industrial company operators tend to increase sports net production. （2）Regarding the future, artisan company company operators views decreasing product price and less profit as the biggest challenges while industrial company company operators view higher human resources cost as the most serious challenge. （3）Industrial company company operators think that besides quality of product, brand establishment is important.
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Hou, Nai-Hua, and 侯乃華. "Assessment of Textile Industrial Transformation of Producing Textile Products from Recycling Waste Fishing Nets." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/596ukm.
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碩士國立臺灣大學
環境工程學研究所
107
Waste fishing net is one of the major problems in the ocean environment. It is rarely recycled in Taiwan because there is no strong economic driving force for recycling waste fishing nets. However, recycling waste fishing net to produce textile can reduce the impact of high international oil price, promote textile industry to transform in Taiwan, and meet the global textile industry trend. The analytical method includes two model, Waste Input-Output Analysis (WIO) and Input-Output Analysis (IO). This study establishes waste fishing net WIO and 54-industry IO. Steven scenarios of textile industrial transformation are consisted of three factors: incineration tax, product innovation and technology innovation. These scenarios are for assessing the economic and environmental impact in Taiwan, which contain inter-industry linkage effect, raw material demand, total cost, value-added of the textile industry and macro-economic effect. The result of this study is that increasing the incineration tax or product innovation can reduce the total cost and the raw material demand and increase value-added. No significant differences are observed in the scenarios of increasing technology innovation. However, comparing to the textile industry, recycling textile industry is so small that the textile industrial transformation has little effect on itself, macro-economic, as well as the driving force of the recycling waste fishing nets. So, this recycling system may be improved by recycling with other wastes in the future.
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Yi-HsuanLee and 李宜璇. "Dancing with The Enemy? A Perspective of Competitive Dynamics on The Co-opetition within The Fishing Nets Industry in Taiwan." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/fwdsu5.
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碩士國立成功大學
企業管理學系碩士在職專班
102
The competition of globalizing gets violent and the fishing nets industry presents competitive highly. Besides, plastic techniques are varying and boundaries are fuzzy. The leader factories expand rapidly the territory of business. The high-dynamic industry creates the best opportunity to research co-opetition each other. Pursuant to this research of deep analysis, discuss as following:（1）How to maintain the position of leading ?and how to expand the vantage of competition into whole fishing nets industry？（2）Under rapidly changing circumstance of total market, how are the strategies altered by structure modified？（3）As boundaries being fuzzy, how do the firms which play varied roles in different markets create advantageous games with the strategies of co-opetition ？ This research found that: The leadership own rights of qualifying and specifics to force others to follow. They not only consider entire benefit and individual profit, but also achieve purpose of evolution. Under competition dynamics, they overtake other competitors from creation in quality, price, timing, technique, hinder set and capitalizing, also maintain the leader position in elimination by him and ability to compete. Boundaries was broken and overlapped, competition and cooperation exist each other in the meantime. Per value net to measure position, they invent situation of advantage to change partners, value added, rule, tactics and ranges with strategies of co-opetition applied.
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Lai, Yu-tung, and 賴昱彤. "The use of discrete-event simulation and lean methodologies in solving variable unit-load production system-A case study of fishing nets production." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/93843341850443056120.
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碩士國立成功大學
製造工程研究所碩博士班
96
The final purpose of the lean production system is to satisfy customer's needs. Therefore, the flexible of production lines becomes a critical issue after production pattern has been changed from mass production to small-volume with large variety production. The manufacturing system of lean production is using management methods to survey the waste of production lines, to execute some kinds of improvability actions of reducing the cost, and to elevate productivity and quality to support various customization productions. By using lean production system, industries not only can earn profits but also can raise competitive advantage. As the automobile industry is the benchmark of applying lean production nowadays, we will discuss the procedures, meanings and conditions of applying lean production in successful cases. Furthermore, we will also apply the successful experiences to variable unit-load production. By analyzing those successful experiences, we can design an exclusive and variable lean production system in unit-load production. We select the fishing nets production as a case in this study and in this research we use simulation methods as tools, and combine Taguchi method with technique for preference by similarity to ideal solution to find optimum solution. We also generalize the differences and possible reasons from a collection of experiments to plan the improvement directions of following strategies and use them as basis of policy decision. We also propose to combine Womack’s lean thinking and Rother’s 7 guiding principles procedure in this paper to apply the lean pull strategy and leveling scheduling into cases. The lean production procedure begins from defining value, addressing the adequate improvement time through the current value stream mapping, obtain the optimal solutions by using simulation optimization, and drawing the future value stream mapping as an implement of improved alternative. We implement the proposed procedure to a real-world fishing nets production process. After we compared current-state map and future-state map, the results indicate the improvement could reduce the average cycle time from 9.45 days to 2.07days as well as the work in process could reduce 84.73% without any extra investment or facilities shifting. As a result, we can have a further plan of increasing the capacity of bottleneck workstation and fulfill the spirit of “There is always a better way” completely.
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Yeh, Chih-yung, and 葉智湧. "The analysis of Set-net fishing gear structure." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/gm4aqg.
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碩士國立中山大學
海洋環境及工程學系研究所
103
Due to decades overfishing and pollution of marine environment, the originally abundant fish stocks in the nearshore area has diminished tremendously. According to the report of Food and Agriculture Organization (FAO), the global fish production will be insufficient to supply for human being in the near future. Therefore, how to solve this critical scenario has become an important issue. And if considering the possibility of restoring marine ecological system and its sustainable development, then the installation of set-net facilities in the nearshore may become a good alternative solution. For example, black tuna species farmed in Japan in recent years were artificially bred with set net catches. In addition, set net gear is installed close to shore and fishers normally operate a small vessel with an outboard engine. Instead of an active fishing gear, set net fishing is actually a passive gear, which makes fuel cost only account for 2 ~ 5% of overall cost. Compared with other types of fisheries that use active gear to capture and entrap targeted species, set net fishing is more economical and fuel efficient. To improve the efficiency of fishing, it is necessary to consider the securityof fishing gear in the sea. The objective of this study is to establish a numerical model to simulate the dynamic behavior of the set-net system located at Sansiantai, Taitung County. The numerical model is based on the small body concept and lumpedmass method to calculate the force on each component. The maximum mooring line tension at anchor as well as the minimum weight of anchors will also be examined, and some valuable technical guidelines can be offered to the set-net fishing.
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Yang-ChengYuan and 袁揚承. "The Study of the Multi-functional Fishing Net." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/69593518053347090452.
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Tsai, Tien-Yi, and 蔡天益. "A study on the effect of fishing condition of stick-helddip net fishery at different capability of fishing lamps." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/62853851777622069722.
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Gau, Duen-Bao, and 高敦寶. "Comparative Studies on Fishing Conditions between the Set-net Fishing Grounds of Hsinshefar and Chiafong in Northeastern Coastal Water of Taiwan." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/62368371504543803430.
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碩士國立高雄海洋科技大學
漁業生產與管理研究所
95
Abstract This study is aimed at analyzing and comparing fishing conditions of the Hsinshefar set-net fishing company (24o 30′ N, 121o 50′ E), located at Tang-Ao bay, and Chiafong set-net fishing company (24o 10′ N, 121o 40′ E), located at Cheng-Der bay, northeast coastal water of Taiwan, including species composition and fluctuations of fishing conditions from 1995 to 2003 through fishing data analysis. The results obtained are summarized as follows: There are more dominant species at the Chiafong set-net fishing ground than the Hsinshefar set-net fishing ground, but there is little difference of each species catch at Hsinshefar set-net fishing ground. Regarding dominant species, the two set-net fishing grounds are mostly pelagic migratory species. Sarda orientalis and Auxis thazard are the top one dominant species at Hsinshefar and Chiafong set-net fishing grounds respectively. Furthermore Auxis rochei, Trichiurus lepturus and Decapterus kurroides, Auxis rochei are the second and third dominant species at Hsinshefar and Chiafong set-net fishing grounds respectively, and comprising about 40 % of annual landing at those set-net fishing grounds. By two-way ANOVA analysis, it showed that there is significant difference on geographical CPUE between Hsinshefar and Chiafong set-net fishing grounds, and there are six species such as Sarda orientalis, Auxis rochei, Trichiurus lepturus, Selar crumenophthalmus, Tylosurus acus melanotus, Seriola dumerili at the Hsinshefar set-net fishing ground more than Chiafong’s on CPUE(P＜0.05；P＜0.01), as well as only Auxis thazard species is opposite at Chiafong set-net fishing ground on CPUE(P＜0.01). It seems that the two set-net fishing grounds have similar fishing period. However period peak on Trichiurus lepturus at Hsinshefar set-net fishing ground fishing is in March, as well as in April at Chiafong set-net fishing ground. On the other hand, the fishing period peaks on Scomber australasicus and Coryphaena hippurus are in February and December respectively at Chiafong set-net fishing ground. Fishing condition at the Hsinshefar set-net fishing ground is better than Chiafong’s, because it owned fine fishing ground environmental conditions. Such as estuary front、wide continental shelf、superior bay、upwelling and artificial reefs etc.
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Lin, Ruei-Lung, and 林瑞龍. "Studies on Fluctuation of Ocean Sunfish Fishing Condition between Changchun and Chiafong Set-net Fishing Grounds at Hualien Coastal Waters of Taiwan." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/94054792098978244818.
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碩士國立高雄海洋科技大學
漁業生產與管理研究所
97
The purpose of this study was to investigate the fluctuation of ocean sunfish fishing condition between Changchun and Chiafong Set-net Fishing Grounds at Hualien coastal waters of Taiwan. The fishing data obtained were from November 1999 to June 2007. The relationship between the components of catch data and the oceanic condition of Mola mola based on the fluctuation of abundance of catch and over the year of catch data in the two fishing grounds were compared and analyzed. The results obtained are shown as the following: 1. According to data from November 1999 to June 2007, there were two Molidae, Mola mola and Masturus lanceolatus respectively in Changchun and Chiafong set-net fishing grounds, The main fishing season was in winter. 2. The fluctuation of monthly averages of over the year on Mola mola in Changchun set-net fishing ground had a consistency during November and March. There was a peak on quantity of Mola mola in November in the two set-net fishing grounds. 3. Over the year of catch data, Mola mola was predominant species making up above 2 % of total quantity in two set-net fishing grounds. 4. To investigate monthly averages of environmental factors and monthly averages of catch data on Mola mola, the two set-net fishing grounds’ homologies at temperature 23 ℃ get quantity high peak for the fishing. 5. There was no significant difference between single quantity and total quantity of Mola mola in the two set-net fishing grounds.
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Lin, Cheng-Han, and 林鉦瀚. "The development and implementation of a capacity planning model for fishing-net production." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/86979233200821745240.
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碩士國立成功大學
製造工程研究所碩博士班
97
Rough-cut capacity planning（RCCP）is important for the quick response to customers demand under the make-to-order（MTO）environment, such as the fishing net production industry which has a unique production process than other industries. A lot of researches before not exactly focussed on the development and implementation of a capacity planning model for fishing net production. This research aimed at the traditional fishing net production industry which developed a customized capacity planning system（CCPS）which included both machine rate system and RCCP system. CCPS evaluates current loading of resource capacity and assisted managers in determining to accept orders or postpone orders by negotiating. The company evaluates capacity loading from artificial experiences change to CCPS already. The simulation results expected that the average profit per metric ton could add from NT$38,758 to NT$43,287 as well as service level could be added from 80.86% to 97.70% . Finally, CCPS provided capacity loading infortmation for managers to readjust using capacity strategies. In the future, the aim of the research should be extended scheduling system under the foundation of CCPS to improve production process in the fishing net production industry.
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Ho, Chia-Lin, and 侯佳伶. "A study on the lean pull system for fishing-net manufacturing using simulation optimization." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/72480700117224078827.
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碩士國立成功大學
製造工程研究所碩博士班
97
The fishing-net industry is in Make-to-order environment. Different order form its net material, the size and the knitting way are all different. Because in demand uncertainty, using push system will cause the mass work-in-process（WIP）, therefore needed other way avoid the situation. This paper consider about product flowing type for non-fixed（calls the variable unitload）on fishing-net manufacturing, and set up two kind of unit-load（area and weight）. The proposed a lean pull system, combining Kanban system and Supermarket, which is applying value stream mapping methodoloty in a fishing-net manufacturing case study under demand uncertainty. By using simulation optimization to solve supermarket design problem,with improves the waste which WIP in the system, enhances the service level. This paper also proposes to use Womack’s lean thinking and Rother’s 7 guiding principles procedure as applying the lean pull system. The proposed procedure is illustrated to begin value, to address the critical improvement point through the current value stream mapping, and to draw the future value stream mapping for implement the improved alternative. Finally, implemented the proposed procedure to a real-world fishing-net manufacturing case study. After compared current-state map and future-state map, the results indicated that the optimal solution could reduce the WIP respectively from 63971 kg reductions to 25300 kg, improves 60.45%, and 57700 kg reductions to 25300 kg, improve 56.15%. The service level respectively from 67.62% increase to 88.42%, improves 20.80%, and 66.93% increase to 88.42%, improves 21.4%. The cycle time from original 44.86 days and 41.15 days, reduces to 33.51 days, improves 25.30% separately and 18.57%.
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Chen, I.-Chen, and 陳怡蓁. "THE STRATEGY AND ANALYSIS OF ENTERPRISE TRANSFORMATION: A CASE STUDY OF A FISHING NET MANUFACTURER." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/atrrz2.
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Roei-Chern, Wu, and 吳睿宸. "Study on Planning and Investigation of Set-net Fishing Ground off Houlong Coastal Area, Miaoli County." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/62790084628715701695.
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碩士國立高雄海洋科技大學
漁業生產與管理研究所
104
To activate the coastal area fishing village and introduce the eco-friendly, in accordance with livelihood, production, ecology set-net fishery, that of marine energy saving and environmental protection and high value-added to Houlong township, Miaoli county, evaluative planning and investigation on set-net fishing ground off Houlong coastal area was studied. Excluding the limits of utilized areas known, discussion with local fishermen and members of Nanlong Fishermen’s Association, within its exclusive fishery right area was selected and surveyed. By means of field investigation, marine environmental, including oceanic and fishing condition data, such as bathymetric measurement, current flow, sediment sampling and fishing ground location photography were collected and set-net fishing ground of mapping and assessment analyzed. Feasibility of development and analysis of the set-net fishery and diversification of marine industry was completed. Through analysis of the comprehensive assessment, the area investigated was suitable for development of fishing business with at least two sets of the set-net and to promote diversification of marine industry. The planning will provide reference for the development of Nanlong Fishermen’s Association to manage local set-net fishery and improve rich and beautiful fishing village in the future.
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ZHANG, HONG-LIN, and 張鴻琳. "Studies on the artificial reefs around the set net fishing ground of Tai-Lee coastal water." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/70950379238244837432.
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Hsieh, Yu-Hua, and 謝侑樺. "Study on the fishery resources structure of Fu-Xing set net fishing ground in Yilan Bay." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/gabx4n.
Full textAbstract:
碩士國立臺灣海洋大學
環境生物與漁業科學學系
105
The set net fishery is one of the important coastal fisheries of Taiwan. It is the important method for the observation of coastal fisheries resource structure, as this method was usually used to sampling the biological resources migrating to the coastal waters. This study was tried to collect the daily catches data of Fu-Xing set net fishing grounds from March 2011 to February 2015 in the waters of Shih-cheng, Yilan county. The average catch per unit effort (CPUE) by years and seasons was calculated to analyze the fishery resources structure. The community diversity analysis and the relative importance index were used to evaluate the characteristic and changes in the structure of marine resources in this area. The results showed that the annual operational days of Fu-Xing set net fishing grounds were varied about 240 to 284 days, and the average annual CPUEs were fluctuated between 728 ~ 1288 kg/day. In addition, the main fishing season with the highest CPUE of 1619 kg/day is in spring, while the slack winter season with the lowest CPUE of 388 kg/day is from December to next February every year. Based on the catch data of species larger than 1% of total catches, the major three dominant species were changed by year. For example, the dominant species are Katsuwonus pelamis (55.74%) in year 2011, while the dominant species were changed to Katsuwonus pelamis (31.91%), Katsuwonus pelamis(32.89%), and Katsuwonus pelamis(40.42%) in years of 2012 to 2014, respectively. It is interesting that the lowest diversity index, species richness index, evenness index and diversity index were happened in summer, and then those indexes began to subsequently increase till winter. In addition, species richness index varied between 1.35 to 1.47, while the divergence index and evenness index were reach to the lowest and the highest value in 2011 and 2014, respectively. Furthermore, the high variation of alternative species was happened in season of spring and autumn, but lower in summer and winter. Refer to migration index (MI), it showed the most stable communities were appeared in winter, while spring and autumn were the key seasons for maximum and minimum species, respectively. Comparing the species similarity in seasons between different years, the lowest species similarity in 2014 was different to the other three years. For the similarity of the year in each season, the most similar species of four seasons was appeared in 2013, and, overall, the species similarity between the autumn and winter were lower than those between spring and summer. For the yearly comparison, species similarity was highest (77%) in 2011 & 2013, and lowest (56%) in 2012 & 2014. Finally, the influence of Typhoon on catch and diversity was also discussed in this study.
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Jenq, Kai-Jun, and 鄭凱駿. "Study on Application of Global Positioning System Technology in Set-net Fishing Right Survey in Hualien Prefecture." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/79vg7u.
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碩士國立高雄海洋科技大學
漁業生產與管理研究所
103
Maritime mapping is mostly applied mechanically in land survey and mapping method traditionally which taking many time and having expensive works, and the results are mostly poor accuracy. In this study, taking set-net fishing grounds of Hualien, Global Positioning System (GPS) technology is applied to take time-saving and better accuracy in maritime mapping, and to assist in set-net fishing grounds of Hualien related to areas of set-net fishing right and buffer zone. The priority interests of local fishermen of coastal waters may be safe guarded, and the management of fishery resources would be implemented. Approaching to Taiwanese measures of fisheries management under the premise of maintaining balance between the use of marine resources, GPS technology would be applied to schemes of areas of set-net fishing right and buffer zone. After discussions with set-net fishery owners, thirteen set-net fishing grounds were officially selected and mapped range of fishery rights. Each set-net fishing ground was surveyed by six points with latitude and longitude coordinates. Finally, map of the set-net fishery right was integrated for drawing with information. There are thirteen maps of set-net fishing right range and the buffer zones were completed. The scope of each fishing ground included was calculated. It may provide official fishery units to manage set-net fishery in the future in Hualien, and fishermen apply for a license renewal and to protect their individual fishing rights basis.
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CHEN﹑PING-CHAO and 陳炳詔. "Study on Customer Satisfaction and Importance of Sales at Chaojin Set-net Fishing Company in Hualien County." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/55je99.
Full textAbstract:
碩士國立高雄科技大學
漁業生產與管理系
107
Taiwans fisheries are currently facing many difficulties. The global marine resources are depleted and the management system of international organizations is set. In particular, the restrictions imposed by offshore fisheries are more stringent than in the past. Japans neighboring countries have already lowered the proportion of offshore fisheries to shift the focus of fishery production to this. Management and development of offshore fishery resources along the country. At present, Taiwans offshore fisheries face the shortage of manpower and aging of their nationality. The depletion of offshore resources and the continued maintenance of fishery resources are still in the works. According to the questionnaire survey of the Chaojin Fishing Ground, most of the buyers are mainly neighboring residents and they are too old, and there is a lack of foreign tourists to visit and purchase. How to make rational use of existing resources and enhance the importance and value of catch products, and even operate additional output value. It can cooperate with the government and management units to achieve the six-level industrial scale of primary production, secondary processing and tertiary sales transformation. Transform and upgrade traditional industries.To achieve the goal of profitability in the local area. This study adopts a questionnaire survey method to explore the situation of customers visiting Hualien County’s Chaojin Set-net Fishing Ground. Study consumer motivation, importance and satisfaction, and analyze consumer basic information and characteristics. A total of 250 official questionnaires were issued, and 234 valid questionnaires were valid. The effective recovery rate was 93.6%. After research and analysis, the conclusions obtained and the analysis of each item are of high reliability. Therefore, this questionnaire is suitable for the fishing sales survey of the Chaojin fishery. The data collected in the questionnaire were statistically analyzed using the SPSS24.0 software package. Narrative statistical analysis, factor analysis, Pearson correlation, no parental analysis, IPA and SWOT analysis were used to explore customer consumption habits and The business expectation and improvement of the fishery. Taking the Chaoyu Fishing Ground as the research object, it has a long history of operation and has been passed down for three generations. Second, it has solid experience and technology. Furthermore, the Qixingtan Scenic Area, which faces the gold level, has many tourists and is easy to visit. At present, the operators of the family business, in fact, the operation is thick, the background of scholars who have researched fisheries, the integration of production and learning, the achievement of industrial upgrading and transformation, and the development of Jiahui in the field. Keywords: Chaojin Set-net fishing ground, SWOT analysis, industrial transformation and upgrading, profit in place
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Tsuey, Luo, and 羅翠藕. "Analysis of The Net Benefit form Doing Protection Measures of Nature Resources of Inshore Fishing in Taiwan, R.O.C." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/69278875900847061337.
Full textAbstract:
碩士國立中山大學
經濟學研究所
92
Though it bears favorable natural environment, the development of Taiwan coastal fishery is blocked by many factors. Among which, the exhausted fishery resources stays at the top, resulting from the various pollution, over-fishing and illegal fishing etc.. In addition, subject to the WTO regulations, the fiercer competition facing fishing products is another factor. To improve this situation, the Fisheries Administration takes many measures, in order to protect the fishery resources, realize the sustained development and increase the income of fishermen. This research is to, by the method of policy analysis and the principle of the fisheries economics, discuss the protection measures on Taiwan coastal fishery resources in recent years. Taking the policy planning into consideration, other than restoring the cultivation and re-productivity of the fishery resources, the diverse development is also concerned. While the analysis of the fish output, production value, unit fishing effort and the income of the fishermen presents a well performance. This research is designed to discusses, with the method of cost-benefit-analysis, the executive benefits of the measures in 2000, 2001 and 2002, with the results showing the proportion of the profits to the cost over 1 and the net profits also speaking for the well performance. Suggestions: 1. The policies for the coastal fisheries should be pertinence of the concrete targets, in order to avoid the decrease in profits resulting form the conflict regulations. The harmony among regulations is important for realization of the diverse development. 2. More detailed statistics is necessary for objective assessment of the executive performance. 3. The results attained always lag the policy application, so that the timing and the durative of the execution cannot be neglected or all efforts may be in vain. And experts are necessary to supervise and assess if the running cost of the policy enforcement is regarded as the scale economy, and such performance should survive the changes in personnel and the decrease in outlay.
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Li, Yuan-Ting, and 李源庭. "Study on Customer Satisfaction and Importance of Catch Marketing at Heng-Yuan Set-net Fishing Company in Hsinchu." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/52251115911470304044.
Full textAbstract:
碩士國立高雄海洋科技大學
漁業生產與管理研究所
98
Abstract The text puts the Customer Satisfaction and Importance of Catch Marketing at Heng-Yuan Set-net fishing company as an example to investigate and analyze the interrelations among tourist motive, importance and satisfaction on the visitors of different social and economical backgrounds. The research utilizes questionnaires to investigate the interrelations among tourism motive, importance, and satisfaction on visitors and the Catch Marketing at Heng-Yuan Set-net fishing company. The research sends out 300 questionnaires in total, retrieves effective samples of 286 questionnaires, and the effective rate of recovery is 95.3%. The materials that the questionnaires are collected, utilized by the SPSS for software package of Windows to adopt the methods of narrative statistics, t-test, one-way ANOVA , factor analysis, Pearson correlation analysis, IPA, and SWOT analysis to analyze the interrelations among tourism motive, importance, and satisfaction on visitors and the Catch Marketing. The outcomes on study describe below: 1. According to the basic information of interviewers including age, eduction and the travel characteristics are difference, the tourist motive shows some obvious differences. The study shows partly positive result. 2. There is an apparent relation between tourist motive and importance on interviewers.The study shows positive result. 3. There is an apparent relation between tourist motive and satisfaction on interviewers.The study shows positive result. 4. Except the term on the convenience of communications and transportation, there is an obvious difference on inspection of importance and satisfaction, and the satisfaction is lower than importance. 5. The research utilizes IPA, SWOT analysis, and other results on study to provide the reference on planning and management to the business owner. Also, we hope this report may provide some useful suggestions to the relevant government institutions and research department.
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Fan, Rui-Qian, and 范瑞倩. "Analysis on the fishing capacity of squid stick-held dip net fishery in the northeastern waters of Taiwan." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/00040787954796051201.
Full textAbstract:
碩士國立臺灣海洋大學
環境生物與漁業科學學系
103
This study aimed to investigate fishing capacity of squid stick-held dip net fisheries in the water off northeastern Taiwan using data envelopment analysis (DEA). Data required for DEA analysis were collected from 8 squid stick held dip net fishing vessels operating in the water off northeastern Taiwan during 2008-2013. Fishing vessel (tonnage and horsepower), fishing operation (number of net deployment and working day), fishing lamp (number and power), hoop net (length and depth) were selected as input factors for DEA analysis while catch abundance was selected as the output factor. The results indicated that the average capacity utilization rate of fishing vessel, fishing operation, fishing lamp and hoop net was 69%, 75%, 75% and 52%, respectively. The overcapcity of all input factors was evident in the present study except for horsepower of fishing vessel and number of fishing lamp. The average capacity utilization rate varied annually. The average capacity utilization rate of fishing vessel (46.5%), fishing operation (56.9%), fishing lamp (49.7%) and hoop net (56.9%) was at the lowest level in 2009. The average capacity utilization rate also varied with targeted fish species. The average capacity utilization rate was 64% for skipjacks, 42% for cephalopods, 39% for mackerels and scads, and 37% for others. Taken together, it is feasible to measure fishing capacity of squid stick-held dip net fisheries in the water off northeastern Taiwan using DEA. Results from this work can offer scientific evidence required for the management of squid stick-held dip net fisheries in the water off northeastern Taiwan
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Wu, Ying-Chang, and 吳盈璋. "Comparative Studies On Catch Species Composition And Variation Between Chiafong And Manfong Set-net Fishing Grounds In Taiwan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/16856940396347247775.
Full textAbstract:
碩士國立高雄海洋科技大學
漁業生產與管理研究所
100
In this study, Variations of fishing conditions of two set-net fishing grounds in the eastern and southwestern Taiwan, Chiafong and Manfong, based on variable factors such as catch composition, catch per unit effort (CPUE), fishing condition, fishing season, and fishing period in seven years from 2001 to 2007 were investigated and analyzed. The results of the preliminary research are shown as follows: 1. There were 12 common dominant species at two fishing grounds: 5 species of Scombridae (including, Acanthocybium solandri, Scomberomorus commerson, Auxis rochei, Auxis thazard, Euthynnus affinis); 1 species of Carangidae (Seriola dumerili); 6 other species (including, Tylosurus acus melanotus, Sphyraena japonica, Sphyraena forsteri, Dasyatis akajei, Aluterus monoceros and Istiophorus platypterus). 2. The Chiafong set-net Fishing ground’s CPUEs were higher than those of Manfong’s in 7 consecutive years. The Chiafong and the Manfong set-net fishing grounds had two peak fishing seasons from November to January as well as from March to May and one peak fishing season from March to June, respectively. 3. The Index of Diversity and the Index of Evenness of the Manfong set-net Fishing grounds which were higher than those of the Chiafong’s should be attributed to more dominant species in the former’s fish fauna. In addition, the catches obviously different among dominant species at the Chiafong were also significant. 4. The first dominant species of the Chiafong and the Manfong set-net fishing grounds were Auxis thazard and Seriola quinqueradiata, respectively. The second (third) dominant species of the Chiafong and Manfong were Mola molaas (Decapterus kurroides) and Tylosurus acus melanotus (Megalaspis cordyla), respectively. The average catches of top three dominant species at two fishing ground, 46.2% and 26.82%, indicated dominant species’ significant effects on their annual outputs.
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Hsu, Wei-Yen, and 徐威嚴. "Study on Customer Satisfaction and Importance of Catch Sales at Manfong Set-net Fishing Company in Pingtung Prefecture." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/15960492601429241163.
Full textAbstract:
碩士國立高雄海洋科技大學
漁業生產與管理研究所
100
This study explores the motivations, importance, and satisfaction of respondents who visited Manfong set-net fishing company and purchased its catch. Analyses are focused on importance and satisfaction of the customers with regard to catch quality, marketing, equipment, and service. Discussion and analysis are surveyed through questionnaire-based. Among the 250 questionnaires distributed, 232 are valid, and the rest 18 invalid, making the valid recovery rate as high as 92.8%. The collected data are processed by SPSS 12.0. The relationships among purchase motivations, importance, and satisfaction of the customers are investigated by such means as descriptive statistics, factor analysis, credit analysis, t test, single factor variance analysis, Pearson correlation analysis, IPA, SWOT, and TOWS. The results to the hypotheses of the study are as follows: 1.Hypotheses of purchase motivations vary significantly with different demographic backgrounds of the customers: validated. 2.Hypotheses of purchase motivations are highly correlated with the importance of catch marketing: validated. 3.Hypotheses of purchase motivations are highly correlated with the satisfaction with catch marketing: validated. 4.Hypotheses of significant variances between customers experiences with regard to importance and satisfaction: validated. The results achieved from IPA, SWOT, and TOWS analysis may serve as recommendations to the industry, the government, and the academic community for future management of the business and policy development.
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Pasaribu-Guzina, Stella Sherley Miryam. "Assessment of an environmentally-friendly method of ornamental fishing associated with revenues of fishers in Tejakula sub-district, Buleleng region, Bali, Indonesia." 2013. http://hdl.handle.net/10170/641.
Full textAbstract:
This study examined the impact of reformed fishing and reef management practices in a community-based marine ornamental fishery in Tejakula sub-district, Bali, Indonesia, on the development of effective community-based natural resource management. With the absence of cyanide fishing for one decade, the coral reef condition has improved from 26% of area coverage to 53%. T-test result shows that there is no significant difference in individual fishing revenue and a considerable decrease in total fishery revenue. The fishers have benefited in resource conservation and a 73% decrease in fishing costs. The overall number of ornamental fishers has declined, due to social pressure, a smaller overall fishing space because of No Take Zones (NTZ), and fewer orders for ornamental fish.Environmental education for local community members is critical to maintain adherence to the reformed method of fishing. Clear definition of the NTZS policy should be acknowledged to avoid recurring conflict among stakeholders.
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Liu, Chun Cheng, and 劉春成. "Studies on the fishing condition of set net fishery and sea condition in the coastal waters of eastern Taiwan." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/87556518432113299520.
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Chia, Li-Wen, and 賈俐文. "The Trading and Technology of Dye-root in East Asia－－A Focus on Fishing Net, Sailcloth and Clothes Preservatives." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/zgg45a.
Full textAbstract:
碩士國立臺灣海洋大學
海洋文化研究所
102
Dye-root is the most representative traditional preservative in China. It is a perennial vine whose roots are rich in tannin, and has the function of color dying, preservative, waterproof and cooling. It distributes over southern China, Taiwan, Vietnam and Ryukyu. In this thesis, the uses of Dye-root in various regions are discussed. The procedures of Dye-root dying are also described in the last chapter. In ancient China, Dye-root showed up in documents as a medicine named "Zhekui". It was used as tanning material in southern China in the Sung Dynasty. In Ming Dynasty, it was used quite often as the dying stuff and also used by fishermen to dye clothes and fishing net in Fujang and Gwandong. In Qing Dynasty and later on, not only in Fujang and Gwandong, but also in Zhejiang and Guangxi, Dye-root was used as a preservative. The cloth called Gambiered Guangdong Silk with Dye-root was used in making summer clothing and became popular in Gwandong. Dye-root were plentiful in Fujang, Gwandong and Guangxi, but the using amount was so large that imports were still necessary. In Taiwan, during the Dutch and Spanish Occupation period, Chinese businessmen might have already gotten Dye-root from aborigines and traded them to China. In Qing Dynasty, the Han people still used Dye-root as dying stuff and preservative and continued the Dye-root business with China. In the late of Qing Occupation period, umber Dye-root clothes had become an identification of Taiwan fishermen. During the Japanese Occupation period, Japanese did a lot of researches of Dye-root and found it can be the ink and ship preservative coating. Because of the need of tanning material, Japanese government tried to introduce it to mainland Japan. In the late of Japanese Occupation period, for the same reason, Japanese government transplanted the Gwandong Dye-root to Taiwan. In Vietnam, the documents in 18th to the middle of 19th century showed Dye-root been used to dye clothes wildly. It had been traded to China during Qianlong period, and Vietnam is the most important import area of Dye-root in China in modern times. There are some trading routes, one is flowing to Gwandong by Shi River, and the other is to harbor in Vietnam by river or train first, then transport to China by ship. The latter route handled much more business. The Dye-root preservative technology which based on the combination of scientific theory and practice experience is described in the last chapter. Cold dye is often used in modern times. There are several kinds of tools to grind Dye-root. Brand new fishing nets need to be dyed for many times, usually more than three, the old ones need not. The ratio of water and Dye-root, is about 3. Dye-root residues need to be removed or it will be stuck on after drying up. The excess Dye-root can be covered by sands to prevent from rot.
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Raja, Abdullah Nik Mustapha bin. "Estimation of average and incremental net economic values of Oregon ocean sport-caught salmon : an aggregated travel cost approach." Thesis, 1988. http://hdl.handle.net/1957/26866.
Full textAbstract:
The main objective of this study was to estimate the demand for
and value of Oregon ocean sport-caught salmon fishery. The primary
technique employed to estimate the recreational demand was an
aggregated zone average travel cost method (TCM).
The willingness of an angler to pay was deduced from the
estimated demand for recreational fishing. The concept of consumers'
surplus was used in conjunction with the travel-cost based demand
functions to estimate the net economic value of Oregon ocean sport-caught
salmon. The net economic value computed for the pooled data
from all ten ports was found to be about $6.4 million. This value
was calculated based on the total travel cost per mile of one-way
distance equal to 72 cents.
The regional travel cost method (RTCM) was developed to measure
the effects of substitutes and quality variables in the travel cost
model. A system of a linear demand equations for the six larger
ports was estimated by the seemingly unrelated regression equation (SURE) method. The substitute distances as proxies for substitute
prices were found to be insignificant for this model. Likewise,
attempts to include substitute distances using indexes constructed by
the Principal Component analysis failed to give significant results,
with the exception of Garibaldi and Brookings. The total net
economic value for the regional travel cost model estimated by SURE
was $9.1 million.
The incremental value per coho equivalent was also assessed by
using the relationship between catch and effort per month by port.
The coho equivalent was constructed on the basis of average weights
of the commercial salmon catch, which was roughly two coho to one
chinook salmon. The weighted average incremental value per coho and
chinook was found to be $23.46 and $43.17, respectively. These
values were about 50 percent of their respective average values.
A total of 66 out of 234 distance zones created had zero values.
Tobit analysis was employed to efficiently estimate the recreational
demand from this kind of data. From the estimated demand function, a
net economic value of about $12.7 million was obtained. This value
was higher than those estimated by the SURE method and the OLS in the
simple model.
It should be noted that all the above value estimates were based
upon demand models that were not consistent with the theory of
consumer demand. However, a theoretically consistent system of
demand equations was estimated and presented in Appendix D. This
model fitted the data better than the other models and should give
more accurate estimates of consumer surplus.Graduation date: 1989
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Huang, Chun-Wei, and 黃俊偉. "Study on the fishery resources structure of Man-Feng set-net fishing ground in the coastal waters of southwestern Taiwan." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/12744917647452724673.
Full textAbstract:
碩士國立臺灣海洋大學
環境生物與漁業科學學系
104
This study was tried to collect the daily catches data of Mang-Fong set net fishing grounds from November 2010 to December 2015 in the waters of Checheng, Pingtung County. The average catch per unit effort (CPUE) by years and seasons with the species composition and diversity were used to investigating the fishery resources structure in the coastal waters of southwestern Taiwan. The results showed that the annual operational days of Mang-Fong set net fishing grounds were varied about 287 to 289 days, and the average annual CPUEs were fluctuated between 800.2 ~ 951.4 Kg/day by year. In addition, the main fishing season with the highest CPUE of 1143.1 Kg/day is in summer, while the slack winter season with the lowest CPUE of 621.9 kg/day is from December to next February every year. Based on the yearly catch data of species larger than 1% of total catches, Katsuwonus pelamis is the first dominant species during the period of 2011 to 2014. And the species of Scomberoides lysan is dominated in autumn while the species of Decapterus kurroides and Caranx ignobilis were dominated in autumn-winter and summertime, respectively. In addition, the diversity index showed the richness, diversity and evenness indexes was ranged about, 1.36 to 1.54, 1.72 to 1.83 and 0.61 to 0.64, respectively in the coastal waters of Mang-Fong Set-net Fishing Ground. The highest value of seasonal variation patterns index is examined in autumn, the community stability is the worst in fall, winter is the most stable, the species migrate index shows that the species have a significant move in fall, and gradually moved out after that, the species which moved in and out is the closest in the other three seasons. Among the above species, the common species of Scomberoides lysan, Istiophorus platypterus, Megalaspis cordyla and Trichiurus lepturus were alaways found in this fishing ground.
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Sheu, Yaw-Wen, and 許耀文. "Study on Investigation of Set-net Fishing Ground and Fishery Integration Plan in Coastal Waters off Fang-Shang, Ping-tung County." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/17036576673669537790.
Full textAbstract:
碩士國立高雄海洋科技大學
漁業生產與管理研究所
99
Abstract The object of study is investigation of set-net fishing ground and to make a fishery integration plan in coastal waters off Fang-Shang, Ping-tung County. It’s aim focuses on analyzing and exploring climate (ocean) conditions, catch data, investigation of oceanic environment and SWOT policy of Fang-Shang Township. The results are excerpted as follows: 1. Investigation of climate conditions－ The air temperature of Fang-Shang coastal waters and sea surface temperature are suitable for set-net installed and cage aquaculture. Serious influence to Fang-Shang Township is southwest typhoon, which must be taken precautions. Tide ranges are moderate or slight. Fishing gear would be designed and installed which must be considered to check the tidal range. 2. Investigation of catch data－ CPUE distribution of model fishing ground which indicated that annual catch of the sample fishing ground had grown stably, and month of peak catch in May every year. In last ten years, average proportion of dominant species reached 71.38%, and which 35 species were captured. Over the years, according to statistical analysis, Index of Diversity (H') of dominant species was between 1.47 and 1.80, and Index of Evenness (J') was between 1.26 and 1.80. Besides, variance is low(CV＝0.27). Obviously, fish migration stability is good. From evaluation of the sea area, fishery source is abundant and stable, economic fish species are numerous. 3. Investigation of oceanic conditions－ Oceanic conditions, including salinity and sea temperature were also appropriate (average is 26.3psu~26.7psu；28.4℃~31.9℃,respectively), which would not affect operations of set-net fishing gear and cage aquaculture. Main current directions were ESE and SSE, average current speed is 7.64cm/s (ca. 0.15kts) which would slightly affect operations of set-net and cage aquaculture. Depth range over 25m~50m where is suitable site for installing set-net. Seabed sediment of silt matrix in depth 18.5m~32.2m was extremely good for installing set-net. Furthermore, nutrients of neighboring estuary ocean is rich. The items-Oxygen- dissolved, BOD, Ammonia, Ptotal amount and Water Quality were reached to A degree. Oceanic environment is suitable to cage aquaculture and set-net fishery. 4.According to results of SWOT and TOWS matrix analysis, combination of set-net fishery and cage aquaculture, which may prompt ocean capacity, save management cost, manage ocean ecotourism and leisure amusement, experience fishery activities, increasing employment opportunities, multiple fishing income. It is high additional-value industry of diversification management type and multifunctional society characteristics, which includes potential idea of 『Conservation、Recovery、Education』, and sustainable ecotype fishery of 『Livelihood、Production、Ecosystem』. By way of overall assessment of this study, set-net fishing ground and fishery integration plan in Fang-Shang Township was carried out. Furthermore, those will be important references for industry, government, academic circles for future development of marine industries in Fang- Shang coastal waters.
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Yu, Jhuang-Yong, and 莊詠喻. "Study on catch analysis of Giant trevally (Caranx ignobilis) at the Mangfong set-net fishing company in Chuken village, Pingtung County." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/05373418527049688120.
Full textAbstract:
碩士國立高雄海洋科技大學
漁業生產與管理研究所
102
Abstract Catch species of Giant trevally (Caranx ignobilis) at Mangfong set-net fishing company in the southwestern Taiwan waters (Chuken village, Pingtung County) was selected to study. Factors, including changes of annual and monthly catch and market values, changes of Catch per unit effort (CPUE) time series, different body sizes, sea surface water temperature (SST) change relationship, and fishing situations at spring and neap tides, contributing to the changes and differences of Giant trevally resources were investigated and analyzed in the set-net fishery. Catch data sampled in the study were from October, 2004 to June, 2012 with a total of 8 years on catch amount, tide variation and SST. Microsoft Excel and Statistica statistical software were used for catch analysis with Two-Way ANOVA, correlation analysis and regression analysis for the investigation of changes of CPUE of Giant trevally resources. Results were as followings: 1. There were no significant differences in the annual CPUE between Giant trevally and other species. However, there were significant differences in the monthly CPUE between Giant trevally and other species (P <0.01). 2. There were significant differences in the monthly catch amount of Giant trevally in May and June comparing to other months. Catch amount in May is larger than that in June. There were no significant differences in other months. 3. CPUE of Giant trevally and other species increases when monthly average SST increased. Catch amounts were highest in May and June when average SST was highest. 4. Annual production was predominantly large-sized fish. Production amount was significantly different between large-sized and medium-size fish, and between large-sized and small-sized fish. The production amount was highest for large-sized fish, followed by small-sized and medium-sized ones. 5. Average catch amount was significantly higher in neap tide compared to spring tide duration. Catch amounts were highest in May and June when neap tide as compared to other months when spring tide (p<0.01). Based on the above results, catch amount of Giant trevally in Mangfong set-net fishing company became higher in neap tide duration, and when SST was high especially in May and June. Catch was predominantly large-sized Giant trevally. Keywords: Mangfong set-net fishery, Otoshi-ami set-net, Giant trevally (Caranx ignobilis), Fishing condition analysis
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洪春雄. "Effects of lunar phase on the fishing condition of the otoshi-ami set net fisheries in the coastal waters of northeastern Taiwan." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4geya4.
Full textAbstract:
碩士國立高雄海洋科技大學
漁業生產與管理研究所
106
Abstract The effects of different lunar phases on the fishing condition of the Chuan-Tin set net fishing ground in the Nan-ao coast, northeastern Taiwan and its five dominant species were studied on the basis of its catch statistics, fishing operation time, tidal current direction and speed during the periods of Jan.-Jun. and Oct.-Dec. in 2015. The assemblage analysis showed that seasonal catch composition of set net can be divided into three groups as Group I (May-Jun.), Group II (Oct.-Dec.), and Group III (Jan.-Apr.), respectively. Based on the value of indices of relative importance (IRI), the first five species were Sphyraena acutipinnis, Auxis thazard, Sarda orientalis, Scomber Australasicus, and Trichiurus lepturus. The results of this study showed that there was no significant difference between the fishing condition and lunar phase at Chuan-Tin set net fishing ground. This phenomenon could also be found in species-specific catch rates. However, the catch fluctuations of set net and its species-specific in relation to tidal currents which relate to lunar phase were found in this study. In general, the fishing condition is better during the periods of current which sea water was flowing to south, but it could be different depending on specific species. The catch rate at tidal current speed about 0.3-0.7 knot was found to be more efficient than that of other speed ranges. Furthermore, the day catches often being better than night catches which implied that the activities of fish groups around the set net in daytime are more active than during the night. Key words：Otoshi-ami set net, Fishing condition, Lunar phase
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江進榮. "Comparative Studies of Species Compositions and Secular Fluctuation of Cath by Set-net Fishing Grounds Between the Northeastern (Fu-Hsing) and Southeastern (Shih-Yu-Shan) oastal Waters of Taiwan." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/86430493127815422004.
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Fritz, Justin. "The SWELSWÁLET of the W̱SÁNEĆ Nation: narratives of a “nation (re)building process”." Thesis, 2017. https://dspace.library.uvic.ca//handle/1828/8842.
Full textAbstract:
In this Master’s thesis, I document my experience working with members of the W̱SÁNEĆ Nation in their efforts to revitalize the reef net fishery. As part of this research project, I interviewed W̱SÁNEĆ community members, and I created a digital map of reef net fishing locations (SWELSWÁLET). In each of these interviews, different W̱SÁNEĆ community members chose to frame reef net fishing differently, and they highlighted specific and unique “alternative political approaches” toward W̱SÁNEĆ cultural resurgence (Kew & Miller 1999:58-59). Despite these differences, each W̱SÁNEĆ community member that I interviewed believed that reef net fishing is something that “needs to be shared” (XA’LATE, pers. comm., June 14, 2016). In Chapter 1, I explore the variations in what specific W̱SÁNEĆ community members want shared. In Chapters 2 and 3, however, I examine the delicate cultural, political, and legal contexts that have made sharing a complicated process. In Chapter 2, I analyze how the BC Treaty Process (BCTP) has exacerbated conflicts among First Nations in British Columbia. Further, I discuss the impact that these conflicts have had on how the W̱SÁNEĆ Nation shares information with their intranational and international neighbours. In Chapter 3, I explore how my misaligned expectations of knowledge sharing in collaborative community-based research—as a white settler man—clashed with “the values and beliefs, practices and customs of [the W̱SÁNEĆ Nation]” (L. Smith 2012:15-16; Lassiter 2005). I also make recommendations for how settler researchers in the future should proceed with research projects in these contexts.Graduate
2019-12-06