• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2003년도 International Meeting of the Microbiological Society of Korea
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• pp.13-15
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• 2003

Studies on marine microbial diversity using direct analysis of rRNA sequences have revealed previously unrecognized microbes and novel phylogenetic lineages that represent major components of global microbial assemblages. This diversity in the marine biosphere offers opportunities for research and application in the field of biotechnology; global gas exchange, nutrient and element cycling, biomass md food production, marine bioproducts, and bioprocesses. Especially, deep-sea encompasses the extremes of virtually at] environmental parameters found on Earth and provides extreme microorganisms. In this study several extreme microorganisms were successfully isolated from the deep-sea sediment samples obtained by joining ocean cruises for last 2 years and some of them will be introduced.

• The Journal of the Acoustical Society of Korea
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• 제25권3E호
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• pp.101-109
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• 2006

Besides dorsal-aspect target strength (TS) of the fish, side-aspect TS information is also acoustically important parameter in fisheries acoustics. In this study, the side-aspect TS of 11 black sea bream (Acanthopagurus schlegeli) were measured using a split beam echosounder of 120, 200, and 420 kHz; total length of the fish ranged from 12.4 to 23.7 cm, and wet weight from 27.5 to 229.8g. For the precise TS measurement with side-aspect angle, we used anesthetized and tethered specimens of known size while being rotated through $360^{\circ}C$ by means of a carousel structure. The side-aspect TS measurements of the fish were conducted by rotating the fish in the horizontal plane at 50 interval. The ping interval was 0.2 second and elapsed time at each angle was 30-60 second. As a result, the measured side-aspect TS data were fitted by sinusoidal function. The relationships between fish length and near full side-aspect TS were as follows: $TS_{120kHz}= 21.46 log (TL)-67.5 (r = 0.70), \;TS_{200 kHz}= 31.03 log (TL)-76.9 (r=0.83),\;TS_{420 kHz}= 30.79 log (TL)-72.2 (r = 0.77)$. For comparison, theoretically estimated side-aspect TS from the Kirchhoff ray mode (KRM) model, which based on swimbladder and body morphology, were compared with the measured TS.

• 한국어류학회지
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• 제19권2호
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• pp.128-131
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• 2007

전장 3.0~650.0 mm의 민어, Miichthys miiuy 209 개체의 두장, 문장, 안와후연장 및 안경을 계측하였다. 측정된 개체들의 모든 두부형질은 전장에 대해 회귀하였고, 머리의 상대크기에 선형으로 증가하였다. 결정계수($r^2$)는 0.9823~0.9916의 범위를 나타내었고, 모두 유의하게 나타났다(P<0.0001). 본 연구에서 사용된 두부형질들은 민어의 성공적인 사육을 위한 개체 및 집단성장사 및 형태 변형을 감지할 수 있는 유용한 지표가 될 수 있으리라 사료된다.

• Ocean and Polar Research
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• 제29권3호
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• pp.273-282
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• 2007

For an efficient management and utilization of marine biodiversity information, we made an attempt to develop the Korea Marine Biodiversity Information System (KoMBIS), building a species name inventory of Korea marine organisms. The inventory includes 17 organism groups: phytoplankton, zooplankton, algae and halophyte, sponges, cnidarians, rotifers, nematodes, bryozoans, brachiopods, molluscs, echiurans, annelids, arthropods, echinoderms, urochordates and fish. The species names were collected from 37 different references and reviewed for validity by taxonomists, which resulted in 9,798 valid names in addition to 1,845 synonyms. The Korea marine species inventory is the first one of this kind, for previous Korean species name inventories were mostly composed of terrestrial and freshwater organisms. KoMBIS, the information system developed, contains not only the species name but also information on morphological and ecological characteristics such as distribution, DNA barcode, and references. This system is convenient for the inputting of new data and servicing users through the internet, so that management and utilization of the biodiversity information is more efficient. Linking the DNA barcode data with species information provides an objective measure for identification of a species, which accommodates the recommendation of Consortium for the Barcode of Life, and makes the Korea marine biodiversity information compatible with international databases. Considering the frequent exchange of marine organisms internationally via ballast water and such issues as climate change, this information system will be useful in many areas of marine biodiversity.

• 한국어류학회지
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• 제34권1호
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• pp.57-63
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• 2022

2016년 4월, 경남 통영시 신봉천에서 채집한 어미 사백어(평균전장 4.6 mm, n=16)를 모래와 돌을 바닥에 깐 실험 수조(60 (L)×30 (W)×30 (H) cm)에 수용하고, 산란행동 및 수정난의 발생과 부화자어의 형태를 관찰하였다. 사백어 어미는 모래 위의 돌 아래에 구멍을 파고 들어가 산란하고, 부화할 때까지 수정난을 보호하는 행동을 보였다. 수정난은 곤봉형(장경 3.2~3.4 mm, 단경 0.6~0.8 mm, n=10)이며 지름이 2~3 cm (원형 또는 타원형)인 난괴를 이루어 돌의 천정에 매달려서 발생하였다. 수온 18~20℃하에서 눈이 생긴 수정난(eyed egg)은 168시간 후에 부화하였다. 부화자어는 투명하며 전장이 4.1~4.4 mm (n=5)이고, 배에는 투명한 난황을 가지고 있었으며 32~33개 (12~13+20)의 근절이 발달해 있었다. 부화 후 3일째, 전장 4.9 mm 자어는 머리의 아래쪽에 입이 열리며 직장이 발달하였다. 전장 난황을 흡수한 전장 5.2 mm 후기자어는 부레 등쪽과 직장 위에 흑색소포가 발달하며 꼬리의 아래 정중선을 따라서 흑색소포가 줄지어 발달하였다.

• 한국환경교육학회지:환경교육
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• 제19권1호
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• pp.14-29
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• 2006

The purpose of this study was to test effect of STS instruction using the subject matter of marine life on middle school students' perception of ocean. The objects of 156 students were sampled from the 1st grade of a middle school and were divided into an experimental group and a control group. 79 students of the control group were treated with traditional instruction, while 77 students of the experimental group were treated with STS instruction materials. All of the students took test of perception of ocean before and after the instructions. The perception of ocean was divided into four categories; value of sea, development of marine resources, research and conservation of sea, and perception of sea-related vocation. The results of the pretest and the posttest indicated that the perception of ocean of the experimental group was statistically significantly higher than that of the control group. Specially in categories of the value of sea and the research and conservation of sea, the scores of the experimental group were significantly higher than those of the control group.

• 한국식품위생안전성학회지
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• 제32권1호
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• pp.70-74
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• 2017

해양생물자원은 차세대 바이오산업의 중요한 자원으로 관심이 증대되고 있다. 다양한 해양생물자원이 생물학적 활성을 가지고 있을 것으로 기대됨에도 불구하고, 지금까지는 시료 채취의 어려움 등으로 개발에 제한이 있었다. 해면동물, 해조류, 산호 등의 대부분의 해양생물자원들이 험난한 환경에서 살아남기 위해 특수한 대사산물을 만들어 낼 것으로 여겨지고 있어 이를 활용하기 위한 노력들이 기울여지고 있다. 많은 종류의 해양생물자원 중에서 바이오산업에 활용할 수 있는 항암, 항균, 항바이러스 및 항암 작용 등과 같은 생물학적 활성을 가진 물질을 선별하는 것이 시급한 실정이다. 본 연구에서는 항암 작용을 갖는 해양생물자원을 도출하기 위하여 사람유래 대장암 세포주에서 세포독성시험을 실시하였다. 해양생물자원은 2013년 3월 마크로네시아에서 채취한 샘플들로 메탄올로 추출한 물질을 사용하였다. 해양생물자원의 세포독성시험을 실시하여 20개의 시료 중에서 3개의 시료에서 농도의존적인 세포 생존을 억제하는 것을 확인하였다. 검색된 시료들 중 2종만이 동정되어, 해면동물 Hyrtios sp.임이 밝혀졌다. 한종은 아직 밝혀지지 않은 상태로 추가적인 연구를 통해 동정이 필요하였다. Hyrtios sp. 추출물(1304KO-327과 1304KO-329)의 HCT116세포 증식억제작용은 이전 연구에서 보고된 RKO에서의 작용과 일치함을 알 수 있었다. 대장암세포주의 생존 억제 활성을 밝혀낸 3종의 도출 물질은 앞으로의 지속적인 연구를 통해 추출물 중의 항암 활성 물질을 규명함으로써 바이오산업의 새로운 개발 자원으로 활용될 것이 기대된다.

• 한국석유지질학회지
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• 제10권1_2호
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• pp.18-22
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• 2004

한국해양연구원에서는 1996년 이래로 동해 울릉분지에서 가스 하이드레이트층의 부존 확인과 특성을 규명하기 위하여 다중채널 반사파 탐사, 고해상 천부지층 탐사, SeaBeam 등의 지구물리 자료와 12 m 길이의 시추퇴적물 시료들을 획득하였다. 동해 울릉분지 남부 해역에는 대규모 천부 가스층이 배태되어 있는데 고해상 천부 탄성파자료에 나타나는 음향이상인 음향 공백상, 음향 혼탁상 그리고 포크마크 등으로 확인할 수 있다. 이 해역에서 채취된 시추 퇴적물들은 대기 하에서 가스팽창으로 야기된 균열조직을 보이는데, 이는 퇴적물 내 가스함유를 지시한다. 이 시추 퇴적물들은 저해수면 시기에 가스 하이드레이트 해리로 인하여 생성된 사면사태에 의해서 공급된 쇄설류와 질량류 퇴적물들로 구성되어 있다. 탄성파 단면도 상에서는 해저면 모방 반사면 (BSR), 진폭 공백 및 위상 반전 현상 등이 특징적으로 나타난다. 가스 하이드레이트층은 수심 2,100 m 정도에서 해저면하 약 200 m의 깊이에 위치하며 BSR 상부에는 대규모 천부가스가 존재한다. 탄성파 자료 해석에 의하면 가스 하이드레이트층은 시대적으로 플라이스토세와 홀로세층 사이에 존재한다. 이와 같이 울릉분지 남부 해역에서 관찰되는 가스함유 퇴적물, 음향이상, BSR등은 가스 하이드레이트층의 부존 특성을 보여주고 있다.

• 수산경영론집
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• 제34권1호
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• pp.137-156
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• 2003

Increasingly, leisure time is being used for outdoor recreational activities, and fishing is one of the principal forms of marine recreation. Marine recreational fishing is a popular activity in Korea and this activity has led to the development of a sector of substantial social and economic value. Also it is considered as one of the important outdoor leisure industries in Korea. With rising of income level and development of marine outdoor leisure industries, social, economic demand increase of marine recreational fishing are showing us new advance ability of marine aquatic bio-industry. However the recreational use of fish stocks has become an important consideration in the public and environmental economic analysis of management aspect of fishing, having grown considerably over recent years to reach a level in Korea where the fish stocks and coastal ecosystem has become a significant management problem. we are inevitably facing marine environmental deterioration and overfishing in marine recreational fishing. In this study, not only resources and environmental problems which are occurred by recreational fishers, but also illegal fishing behaviors and other problems such as market's failure are going to analyze basic management theories and methods of recreational fishing through mathematical principals and economic rents which maximize net social benefits. In view of the likelihood of marine recreational fishers adopting high rates of discount, the conservation of fish resources would appear to require continual public surveillance and control of the physical yield and condition of the fish stocks and the optimal use level. The institutional management of recreational fisheries is the way of escaping the collapse of recreational fisheries just like as the situation of management's failure of commercial fisheries worldwide. One of the effective management measure is a license system. In this system, optimal fee is paid by recreational fishers, which prevent them from overfishing, environmental problems to some extents and carry out the optimal number of outings. And money obtained by license fee should be spent for more improvement fishing culture and welfare for marine recreational fishing. Marine recreational fishing is to be promoted under sound conservation and management principles.

• 한국해양바이오학회지
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• 제13권1호
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• pp.20-27
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• 2021

Ironically, marine bioresource production in Chungnam Province is the second-largest in the country. The province's marine bioresource production puts its lack of a marine bioindustry in the spotlight despite the region's favorable conditions to produce representative value-added and (ultra) high value-added products such as neutraceutical and/or pharmaceutical function. This juxtaposition is to be expected, as there are no institutions for training professionals in the field of marine biology or in the fisheries industry in the West Sea area. The unique features of the region require individuals with specialized training who have been educated in accordance with regional development and the specificity of the region. Recently, however, a plan has been initiated at the national level to foster the growth of the marine biology industry in the Chungnam Province on Korea's west coast. This plan includes increasing funds to the marine biology market to 1.2 trillion by 2030. If the Chungnam region wants to successfully revitalize the marine biology industry and put the increased funds to efficient use, it must first establish various research and (business) development (R&(B)D) plans regarding local marine biology infrastructures and marine biology programs at local universities. It must also focus on training specialists to protect, maintain, and develop the region's marine bio-resources to increase the growth of the region's bioindustry.