• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.421-422
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• 2001

우리나라의 연근해어업은 다종자원을 여러 가지 어구로 동시에 어획하는 복잡한 형태를 가지고 있다. 이러한 어업에는 대표적으로 기선저인망어업, 안강망어업, 선망 어업, 유자망어업 등이 있으며, 특히 본 연구의 대상인 선망어업의 경우 고등어, 전갱이, 정어리 둥 10여종을 동시에 어획되는 다종어업의 한 형태로 취급할 수 있다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.43-44
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• 2000

대형선망어선의 효율적인 운항과 조업방법 개선을 위한 기초자료로 활용하기 위하여 2000년 4월 3일~5일 제주도 성산포로부터 북동쪽으로 24mile 떨어진 위치(33$^{\circ}$43'.6N, 127$^{\circ}$09'.1E)에서 동원식품 소속 동원호선단의 선단조업시 레이더 화면에 나타난 어로과정의 영상을 디지털카메라로 촬영하여 플로피디스크에 저장하고, 그때 얻어진 디지털신호를 후처리하여 분석한 결과를 보고한다. (중략)

• Journal of Korea Fishing Vessel Association
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• v.27
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• pp.35-38
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• 1986

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.10a
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• pp.59-62
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• 2003

우리나라의 선망어업은 제주도 주변해역을 중심으로 소흑산도, 대마도 동북방해역과 동중국해에서 고등어, 전갱이, 정어리 등 부어류를 주 어획대상으로 연중 조업이 이루어지며 연근해 어업 중에 그 규모가 가장 큰 중요한 어업이다. 선망어업은 다른 어범에 비하여 그물어구가 대형이고 조업방법이 복잡하며 신속한 어구의 조작이 필요한데, 선망어구의 형상은 단순하나 망지의 분량은 대단히 많다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.33-34
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• 2001

지금까지 이러한 선망 어구의 조업시 형상에 관해 많은 연구 결과들이 있다. 그러나 이들 대부분이 해상실험 또는 모형실험으로서 실험자체의 어려움과 번거러움 등으로 다양한 실험이 불가능하다. 이러한 실험의 단점을 보완할 수 있는 것이 시뮬레이션에 의한 연구이다. 하지만, 선망어구는 매우 대형의 어구 시스템이며 대부분 그물이라는 유연한 물체에 의해 구성되어있어 외력에 대해 그 형상이 비선형적이므로 그 형상과 운동을 정의하기가 어렵다. (중략)

• Korean Journal of Ichthyology
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• v.33 no.2
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• pp.64-73
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• 2021

We examined the growth and age structure for chub mackerel caught by a large purseseine in the Korean waters from January to December 2015. A total of 459 specimens were used for otolith analysis, ranging from 19.6 cm to 46.0 cm in fork length. Translucent zone was regarded as an annual mark, and age was counted using the information of the number of translucent zone, capture date, edge type of the otolith and nominal birthdate of 1 January. Annuli in otoliths were mainly formed in May, coinciding with the spawning season. Estimated ages were 0~6 years, and the von Bertalanffy growth models were not significantly different between male and female. Sex-combined growth model was obtained as FL_t=39.3×{1-exp[-0.90×(t+0.033)]}. Among the chub mackerel caught in 2015, the age 2 group had the highest proportion (30.9%), and the age 0 to 2 group accounted for 88.5% of the total catch.

• Environmental and Resource Economics Review
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• v.19 no.4
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• pp.771-804
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• 2010

This paper estimates optimal production of fish stock using discrete time bio-economic model to make zero profits or to maximize economic profits with maintaining sustainable resource levels under an open access and a sole owner. Particularly, this study generates optimal yields and efforts of large purse seine fisheries which catch mackerel and jack mackerel by using the logistic growth function, Cobb-Douglas production function, fisheries cost and profit functions. As a result, optimal yields of mackerel and jack mackerel under ecological equilibrium of a sole owner were approximately 172,512 tons and 16,937 tons respectively. Also, optimal fishing efforts of mackerel and jack mackerel under the same situation were about 8,508 hauls and 4,915 hauls respectively. In conclusion, the paper suggests that the large purse seine should reduce fishing efforts and increase fish stock to generate higher net present value in optimally managed fishery than that of the present large purse seine.

• Environmental and Resource Economics Review
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• v.15 no.1
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• pp.71-94
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• 2006

Reducing fishing capacity is one of hot issues in the world fisheries. Increased fishing capacity causes not only fish stocks to be depleted, but also additional fishing costs to be incurred, resulting in reductions of fishing profits. In order to achieve a sustainable and profitable development of fisheries, it is inevitable to reduce fishing capacity. For this reason, FAO adopted 'the International Plan of Action for the Management of Fishing Capacity' and recommended member countries to estimate fishing capacity and to implement the policy to reduce fishing capacity. This study is aimed at measuring fishing capacity of Large Purse Seines Fishery using a Data Envelopment Analysis (DEA). The DEA result showed that the practical catch of large purse seine fishery in 2003 was 158,662 tons, but the capacity output for current input was 318,397 tons. The capacity utilization is about 50%, it is obvious the capacity did not utilize enough. The sensitivity analysis on DEA results indicated that the number of ships (including tonnage and horse power) should be scrapped by 50% or days fished should be reduced by 63% if the present catch remained. In addition, if the catch remains at the MSY base level of large purse seines, the analysis suggested that the number of ships (including tonnage and horse power) should be reduced by 30%, otherwise days fished should be reduced by 60%.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.10a
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• pp.25-26
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• 2002

살오징어(Japanese flying squid, Todarodes pacificus)는 우리나라 전역과 동중국해에서 채낚기, 대형선망, 안강망 어업을 통하여 년중 어획되고 있으며, 1995년 이후 년간 20만 톤 이상을 꾸준히 어획하는 중요 상업 어종 가운데 하나이다(국립수산과학원, 1999).오징어는 일본의 경우 총허용어획량(TAC) 대상 어종으로 자원의 일정한 관리를 위해 음향 조사를 이용한 자원량 파악을 실시하고 있지만 우리나라의 경우 아직 TAC어종에 포함되지 못하고 있다. (중략)

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.6 no.3
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• pp.164-179
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• 2001

Spatio-temporal variation in species composition, abundance and distribution of fisheries resources caught by large purse seine off Korea from 1991 to 1994 was analysed. Out of 19 species, Scomber japonicus (54.7%), Sardinops melanostictus (20.4%), Trachurus japonicus (9.1%), and Scomberomorus niphonius (6.2%) were predominated in catch. These 4 pelagic fishes occupied 90% of total catch. Major pelagic fishes caught by large purse seine were dispersed to northward from spring to summer, and migrated to the southern wintering ground during winter. Fishing effort (number of haul) was high in summer, but catch per unit effort showed a peak in winter. The high CPUE in winter seemed to be related to aggregation of the pelagic fish to the wintering ground in the southern sea. After spawning, they were widely dispersed for feeding in warm months.