• Title/Summary/Keyword: Marine

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Feeding Habits of the Sandfish, Arctoscopus japonicus in the Coastal Waters of East Sea, Korea (한국 동해 연안에 출현하는 도루묵(Arctoscopus japonicus)의 식성)

  • Jin, Suyeon;Kim, Do-Gyun;Seong, Gi Chang;Kang, Da Yeon;Lee, Ju Eun;Park, Hyun-sol;Yang, Hye-jin;Soh, Ho Young;Baeck, Gun Wook
    • Korean Journal of Ichthyology
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    • v.34 no.2
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    • pp.113-118
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    • 2022
  • The feeding habits of sandfish, Arctoscopus japonicus were studied using 781 specimens collected by Eastern Sea Danish and gill net from January 2020 to December 2021 in the coastal waters of East Sea, Korea. The size of the specimens ranged from 14.8 to 25.4 cm in total length. A. japonicus were fed mainly on amphipods that constituted 54.7% in IRI. Cephalopods were the second largest prey component. The diets also include small quantities of euphausiids, crabs, shrimps, fishes, and worms. The diet composition of A. japonicus showed changes in season. The cephalopods feeding rate was highest in summer, whereas the proportion of euphausiids was higher in spring than in other seasons. The proportion of cephalopods has increased as the body size of A. japonicus increased, whereas the proportion of amphipods and euphausiids decreased gradually. As the body size of A. japonicus increased the mean weight of prey per the stomach (mW/ST) tended to increase significantly (One-way ANOVA, P<0.05).

Marine Biotechnology: from Molecules to Aquaculture and Biomedicine

  • Chen, Thomas T.;Chun, Chang Zoon;Chiou, Peter;Chen, Maria J.
    • Journal of Marine Bioscience and Biotechnology
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    • v.1 no.1
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    • pp.1-8
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    • 2006
  • Marine biotechnology encompasses biotechnology in areas such as marine microbiology, biomedical important marine natural products, organisms in extreme environments, and aquaculture. Marine biotechnology, today, poised to flourish more than ever from the confluences that are occurring in fundamental research in modern biology and other areas of science. Using research results from our laboratory and those from others, we will review the current advances of marine biotechnology in this lecture.

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Developing Vocational English Textbooks for Marine Developing High Schools (모듈식 해양생산영어 교재 개발 연구)

  • Shim, Ji-Hyun;Rha, Hyun-Mi;Lee, Yoo-Won
    • Journal of Fisheries and Marine Sciences Education
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    • v.25 no.6
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    • pp.1273-1284
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    • 2013
  • The purpose of this study is to develop vocational English textbooks for vocational high school, especially marine production high school. Vocational English is intended to increase English proficiency in the area of specific industry or jobs. Based on the review of the literature, the study established developed vocational English textbooks for marine production high school based on the modular system. The developing process includes analysis for marine production job, marine production high school and current English textbook for marine production. Based on the analysis, this study developed English contents which marine production students utilize in not only school but also workplace. Also, this study suggests future research directions for effective development and use of the textbooks in the vocational high schools.

The Study of Simulation Exercise System of Marine Oil Spill Crisis Response Based on GIS

  • Yancheng, Liu;Peihai, Yin;Dianli, Zhao;Caiqin, Sun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2004.08a
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    • pp.194-199
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    • 2004
  • The paper does researches and analysis on the process of marine oil spill crisis response (MOSCR), and develops the marine oil spill crisis response simulation exercise system. The system developed by this paper is composed of four subsystems, including the training system of MOSCR, the geographical information system of MOSCR, the marine oil spill control and cleanup decision-making expert system, and the computer simulation exercise system. The paper builds up the applied model system of MOSCR. The system takes the marine oil spill crisis response geographical information system as the platform, which integrates all aspects of MOSCR. This system can offer an oil spill scene to the trainees and simulate the whole process of MOSCR on the interface of GIS.

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The Study on The Macroeconomic Factors of Marine Crime (해상범죄의 거시경제적 요인에 관한 연구)

  • 나호수
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.8 no.2
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    • pp.61-69
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    • 2002
  • The relatively rapid rising trend of crime rates in marine situations leads to social concerns in Korea. This study reviews some theoretical backgrounds of the economics of crime and applies econometric models to Korean marine crimes. This research finds that there is a negative relationship between marine crime rates and unemployment rates and a positive relationship between the price level and marine crimes in Korea. The other finding results are that unemployment elasticities are higher in the 1980s and price elasticities are higher in th 1990s in comparison with the results of the other periods. This findings are incompatible with the previous theoretical researches in advanced countries. These findings show that In rapidly growing economy, marine crime occurrence is proportional to marine economic activity frequency. This result may reflect that marine crimes are different from land crimes.

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A Study on Collision and Legal Comparision of Application in Marine Traffic Laws (선박균형과 해상교통법규의 적용범위에 대한 비교법적 연구)

  • 강동수
    • Journal of the Korean Institute of Navigation
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    • v.17 no.1
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    • pp.49-60
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    • 1993
  • As the marine traffic thickens all over the world, the rate of marine casualities is on the increase, Also in Korea the number of the killed and the injured resulting from marine casualities such as ship's collision, increase continuously and the rate of marine casualities in 1992 came to the highest level in the world. The reason of rapid increasing the rte of marine casualities is the mistake of ship's steering in most case. By the way, because the administration of marine traffic is regarded as the belongs of land traffic, the scope of application in laws related to the safety of marine traffic is duplicated or unreasonable. In the view, in case of ship's collision, it is important to know the scope of application in Korean marine traffic laws and to point out the problems companies with them. Therefore, I suggest the improvement of marine traffic laws related to the safety of traffic administration.

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An Analysis of the Research Trend in Fisheries and Marine Science Education (수해양교육 연구 동향 분석)

  • KANG, Beodeul;PARK, Jong-Un
    • Journal of Fisheries and Marine Sciences Education
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    • v.27 no.4
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    • pp.1013-1020
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    • 2015
  • This study was aimed at analyzing the research trends and presenting the future research in fisheries and marine sciences education. This study analyzed 127 papers related with fisheries and marine sciences education among total 970 papers from 1988(Vol. 1(1)) to 2015(Vol. 27(3)) in 'The Journal of Fisheries and Marine Sciences Education'. The results were as follows. Firstly, researches related with fisheries and marine sciences education have been actively studied from 2013 to the resent. Secondly, career vocation education and subject matter education were the most in the contents on fisheries and marine sciences education. Thirdly, literature reviews and content analysis were used the most in the research method on fisheries and marine sciences education. Lastly, most researchers(82.68%) belonged to university, and from around 2008, multiple-author research began to increase quite a bit in comparison with single-author research.

Elementary School Teachers' Perceptions of Marine Aquaria Field Trips and Educational Roles of Marine Aquaria (초등교사의 해양수족관 현장학습에 대한 인식과 해양수족관의 교육적 기능)

  • Kim, Jong-Mun
    • Journal of Fisheries and Marine Sciences Education
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    • v.24 no.3
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    • pp.459-467
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    • 2012
  • Marine aquariums are excellent venues for accomplishing the purpose of marine education, and school field trips conducted at non-formal settings continue to be an important part of K-12 education. The purpose of this study is to provide quantitative data regarding the extent and quality of marine aquarium field trips conducted by elementary school teachers in Seoul. A web survey designed to explore elementary school teachers' experiences and perspectives on aquarium field trips identified several concerns regarding Korean marine aquarium education. Discussions for both Korean aquaria's educational roles and Korean elementary schools' successful field trips to aquaria are presented with the goal of improving the quality of Korean marine aquarium education.