• 수산해양교육연구
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• 제28권6호
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• pp.1781-1791
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• 2016

This study aimed to analyze the economic effectiveness on environment improvement project that has been implemented in five fishing grounds of Taean-gun which had been damaged by the Hebei Spirit oil spill accident. In the analysis, first, this study performed the survey on residents perceptions about the environment improvement project. Second, the cost-benefit analysis was carried out to evaluate the economic effectiveness of the project. The survey results of residents perceptions indicated that the damage of oil spill was considerable in the target areas. It also showed that residents wanted to continue the environment improvement project and the levels of project satisfaction were quitely high. The economic results showed that 3 areas(Woong-do, Wang-san, and Dang-mi) would have positive values of NPV and B/C ratio, but the other(Nu-dong) would have negative values. The findings of this analysis could be used as the base data for increasing operational efficiency of future environment improvement projects.

• 수산경영론집
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• 제40권3호
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• pp.69-88
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• 2009

This research was as part of restocking project conducted until 1986. The necessity of its economic and scientific verification on restocking project increased. The economic analysis of this project was intended to measure its effectiveness of rockfish restocking throughout certain water areas. The rockfish restocking in 2008 was carried two regional governments of Gyeongnam and Busan. 3-year average annualized performance is 3.76 million rockfish restocked and 940 million won invested. As Gyeongnam restocked 3.62 million rockfish and invested 890 million won, most of rockfish stocking accomplished in Gyeongnam. The public shipment was the 3-year average amount was about 400 tons. Each Suhyup shipment as follows; TongYong 66.6 tons, Namhae 23.6 tons, Samcheonpo 17.2 tons; Yeosu 13.3 tons, Geoje 4.7 tons, Goseong 3.1 tons, Hadong 1.0 tons. The private shipment was assessed by the interview of relevant market participations. The high percent areas of public ship were Nemaha, Goseong 90% and Geoje 80% or more. Hadong and Samcheonpo were about 50%. TongYong was 10% and the lowest. The private shipment was calculated using the percentage of private shipment surveyed. The total amount of private shipment was 4.8 billion, where 4.5 billion was TongYong, where most of private shipment is being made. The positive economic benefit occurred when the percent of restocked is over 15% in the overall catch. The percentage of restocked investigated with genetic test was 58.2%. With 58.2% ratio of restocked, there was 3.8 times economic benefit according to approximately 3.6 billion won. Economic effects were highly significant. As catch increased according restocking, joint market commission increased. Joint market commission was calculated as total restocked shipment multiplied by the ratio of commission, the calculated commissions were as follows; Hadong 5.0%, Geoje 4.8%, Goseong 4.8%, Namhae 4.8%, Samcheonpo 4.3%, Yeosu 4.3%, TongYong 4.0%. According to calculation results, annual commission fee of ￦60,000,000 was raised during 2006~2008. The fishing catch bulk for entertainment significantly increased in sea area carried with mass restock.

• 수산경영론집
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• 제40권3호
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• pp.189-205
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• 2009

This study is aimed to analyze the economic feasibility comparison of the extruded pellets and moist pellets on the Oliver flounder culture farms in Jeju Island. In order to do this, we selected 2 farms (M and S farms) in Jeju Island as a sample. In the study, various analyses including productivity analysis, cost structure analysis, profitability and economic feasibility analysis by feed type were conducted for two sample farms of Oliver flounder culture. The results of economic analysis by feed type on the Oliver flounder culture can be summarized as follows; First, there were not significant differences in productivity by feed type. Second, results of the profitability analysis on farm M by feed type showed the profitability was estimated to be 15.52% and 9.83% in EP and MP, respectively. In addition, the profitability of farm S was estimated to be 28.37% and 33.72% in EP and MP, respectively. Third, results of the economic analysis on farm M by feed type indicated that an internal rate of return(IRR) was 8% and 7% and a benefit-cost ratio was shown to be 1.64 and 1.11 in EP and MP, respectively. Furthermore, the economic analysis of farm M by feed type showed that an IRR was 19% and 24% and a benefit-cost ratio was calculated to be 1.4 and 1.51 in EP and MP, respectively. In summary, it is especially emphasized that economic valuation is not related to feed types (EP and MP). Finally, in order to improve the economic feasibility, it should be more focused on the efficient business management of the Oliver flounder aquaculture.

• 수산경영론집
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• 제47권3호
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• pp.53-69
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• 2016

The purpose of this study is to explore the ecosystem service and benefit indicators of natural seaweed beds. Ecosystems of natural seaweed beds provide a wide range of services and benefits to human society including provisioning services, regulating services, supporting services, and cultural services. Indicators for each of the ecosystem services are chosen by marine plants ecologists and as follows. Ecosystem indicators of natural seaweed beds for provisioning services are well-being food(amount of seaweed harvested/amount of fish landed, fish biomass, area of natural seaweed beds, the number of species, contribution to the second production), raw materials(amount of biomass by breed, amount of aquaculture feed), genetic resources(amount of genetic material extracted, amount of genetic material contained by age and habitat), and medicinal resources(amount of medicinal material extracted). Ecosystem indicators of natural seaweed beds for regulating services are air purification(amount of fine dust/NOx or $SO_2$ captured), climate regulation(amount of $CO_2$ sequestered), waste treatment(amount of N, P stored, biochemical degradation capacity COD), and costal erosion prevention(length and change of natural coast line, amount of sediment prevented). Ecosystem indicators of natural seaweed beds for supporting services are lifecycle and maintenance(primary production, contribution to the second production) and gene pool protection(amount of compositional factors in ecosystem, introduced species). Ecosystem indicators of natural seaweed beds for cultural services are recreation and tourism(the number of visits of an area) and information for cognitive development(amount of time spent in education, research and individual learning about ecosystem of natural seaweed beds).

• 수산해양기술연구
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• 제50권4호
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• pp.542-550
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• 2014

We investigated biomass, diatom species and fucoxanthin contents as cell growth, fatty acid and amino acid contents as nutritional composition of diatoms attached on plate to confirm effects of light emitting diodes (LEDs) due to block off natural light. In the single LED irradiation, biomass showed significantly higher to $30.0{\pm}6.48mg/m^2$ in white LED than that of others (P<0.05). The dominate diatom species was Navicula cancellata. Their lipid contents showed significantly higher to $112.9{\pm}19.23ug/mg$ dry matter (DM) in control than that of others LEDs. But eicosapetaenoic acid (EPA) contents showed significantly higher to $3.3{\pm}0.62ug/mg$ DM than others, but not significantly differed with natural control light treatment (P<0.05). And total protein contents are higher in control and blue LED light than that of others, but essential amino acid contents showed significantly higher to $3.2{\pm}4.8%$ in control (P<0.05). In mixing light with natural and LED light, biomass showed $2.6{\pm}0.22mg/m^2$ in blue LED (P<0.05). Fatty acids contents were not significantly differed with all treatments. Amino acid contents showed to $11.0{\pm}0.33ug/mg$ DM in white LED (P<0.05), but not significantly differed with others LED lights (P>0.05). Therefore, we could suggest that irradiation of blue LED in natural light very benefit to diatom culture for larvae of sea cucumber and abalone and do on.

• 한국해양생명과학회지
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• 제1권2호
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• pp.117-120
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• 2016

수산양식어업은 수산생물질병을 어떻게 효과적으로 관리하느냐가 매우 중요하다. 이 논문은 경제적 잉여분석을 이용하여 수산생물질병방역사업에 대한 경제적 편익의 직접적 효과를 추정하는 것이다. 이와 같은 경제적 편익은 수산생물사망 감소율과 수산생물질병감소로 인해 발생하는 소비자잉여와 생산자잉여의 변화 정도를 포함한다. 연구결과 양식되는 넙치, 볼락 및 기타 어류의 생산자잉여에 대한 연간 변화액은 총 23.3억원(각각의 경우 8.7억원, 10.1억원, 4.5억원)이고, 소비자잉여의 연간 변화액은 총 101.5억원(각각의 경우 63.6억원, 18.5억원, 19.4억원)으로 추정되었다. 따라서, 수산생물질병방역사업에 따른 연간 총 경제적 편익은 125억원 수준으로 평가된다.

• 한국수산과학회지
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• 제57권4호
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• pp.336-341
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• 2024

In this study, the economic and environmental feasibility of seaweed by-products as livestock feed ingredients was evaluated. In the last three years (2021-2023), the estimated average annual production of domestic seaweed by-products, including processing residuals from sea mustard and kelp, was 210,000 tons. The economic feasibility analysis of using seaweed by-products as livestock feed indicated a net benefit of 482,237 KRW per ton. Additionally, substituting seaweed by-products at 0.25% 0.5%, 1%, and 2% in livestock compound feed generated net benefits of 6.5, 12.9, 25.9, and 51.7 billion KRW, respectively. The potential market value was analyzed from an environmental perspective by examining the greenhouse gas reduction potential of seaweed additives. By adding 2% laver, 2% sea mustard, and 0.25% sea mustard sporophyll to the feed, greenhouse gas emissions could be reduced by economic values estimated at 10.8, 11.4, and 15.6 billion KRW, respectively. The findings of this study suggest that the use of seaweed by-products livestock as feed ingredients can generate economic and environmental benefits.

• 한국항해항만학회지
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• 제39권5호
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• pp.431-438
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• 2015

The purpose of this paper is to analyze maritime piracy and its economic implications with particular attention to attacks registered in the Gulf of Aden, The paper also aims to investigate how the International community, along with Sovereign States, should allocate resources in order to make the seas a safer place and describe how closely inter-related maritime piracy, preventive and punitive measures put in place by Governments are. Elements of economics and ergonomics are taken into account in order to properly investigate the major legal issues relating to maritime security. The paper proposes a cost-benefit analysis in order to investigate in theory what is the rationale behind engaging in criminal behavior and recommend some solutions to the issue to be undertaken by the International community. It is concluded that in order to cost effectively fight piracy, a mix of more coordinated National and International laws, standardized and increased punishment levels among jurisdictions and extended patrol controls are needed.

• Ocean and Polar Research
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• 제25권4호
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• pp.593-601
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• 2003

The purpose of this paper is to investigate economic feasibility of creating artificial tidal flats using cost-benefit analyses. We assumed that the cost factors are associated with designing, construction and monitoring, and the benefit factors are associated with fisheries production, habitation, prevention of disasters, water purification, aesthetic value and existence value. First, for analyzing economic feasibility, the scenario suggests that a design can be made in a year, construction can be completed in three years and monitoring must be made for 20 years. Assuming the discount rate of 7.5%, economic feasibility analyses showed that B/C was 2.26 and IRR was 14.50. This study indicated there is economic validity of implementing creation of artificial tidal flat. In addition, we carried out a sensitivity analysis at the change of discount rate and restoration rate. The result of sensitivity analysis clearly showed that economic validity is low when discount rate is over 15%, and changes in restoration rate did not significantly effect on the economic validity.

• 한국산림과학회지
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• 제66권1호
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• pp.68-73
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• 1984

현대사회(現代社會)는 국민경제(國民經濟)의 고도성장(高度成長)에 수반(隨伴)되는 산업활동(産業活動)의 고도화(高度化), 도시집밀화사회(都市集密化社會)의 형성(形成), 생활수준(生活水準)의 향상(向上)에 따르는 여가선용(餘暇善用) 있어서, 삼림(森林)에 대(對)한 공익기능(公益機能)의 발휘(發揮)를 최대한(最大限)으로 요청(要請)하고 있다. 즉(卽), 삼림(森林)이 잠재적(潛在的)으로 보유(保有)하고 있는 야외(野外) recreation 자원(資源), 수자원(水資源), 야생조수(野生鳥獸), 어류(魚類), 목재(木材), 목초(牧草) 등(等)의 천연자원(天然資源)은 공익적(公益的), 경제적(經濟的) 양기능면(兩機能面)에서 복합적(複合的)으로 이용(利用)할 수 있게 하여야 한다. 특(特)히, 삼림(森林)의 공익기능(公益機能)의 수량화(數量化)가 필수부가결(必須不可缺)의 위치(位置)를 점(占)하게 됨으로 이에 대(對)한 연구개발(硏究開發)이 활성화(活性化)되어야 한다.