• Journal of Microbiology
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• 제44권5호
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• pp.566-571
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• 2006

An archaeal 16S rRNA gene library was constructed from mangrove soil. Phylogenetic analysis revealed archaea in mangrove soil including the Crenarchaeota (80.4%) and Euryarchaeota (19.6%) phyla. The archaeal community in mangrove soil appears to be a mixture of organisms found in a variety of environments with the majority being of marine origin.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2003년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.272-274
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• 2003

A few studies have examined the hatching response of copepod diapause eggs to various factors (Ban and Minoda, 1991; Chen and Marcus, 1997). Marcus (1979) monitored the hatching of diapause eggs of Labidocera aestiva and suggested that diapause eggs of marine copepods undergo a refractory phase similar to other diapausing organisms. (omitted)

• Animal Systematics, Evolution and Diversity
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• 제22권1호
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• pp.57-62
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• 2006

Some scyphomedusae were collected from the coasts of Ilgwang, Jeju Harbour, Yeosu, Yokjido Is. and Munyeodo Is. in Korea from May to Nov. 2004. They were indentified into Pelagia noctiluca Forskal, 1775 and Cyanea nozakii Kishinouye, 1891 of the order Semaeostomeae and Nemopilema nomurai Kishinouye, 1922 of the order Rhizostomeae in the class Scyphozoa. They are new to the Korean fauna.

• 환경영향평가
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• 제21권5호
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• pp.767-779
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• 2012

In case of executing surveys in marine ecosystems, the most important things are scientific selection measures of survey stations that can represent various ecosystems characteristics in subjected areas. The situations show a lot of differences that understand characteristics of marine ecosystems in targeted areas according to selection methods and positions in survey stations. Investigation ranges and station numbers in marine ecosystems are classified according to project characteristics and scales. But, currently a clear divisions or objective standards are not. Therefore, this study tried to provide selection measures of survey station in scientific and objective marine ecosystems through precise analysis among environmental impact statements of coastal development projects until now. In this study, impact scopes of marine ecosystems correspond to physical impact predictions by undertaking projects. Impact ranges were divided into three(physical impact ranges) coastal waters. In case of proposing numbers of survey stations according to this survey ranges, numbers of investigation stations due to minimum survey scopes in targeted projects applied 20~30% of all numbers in survey stations. Number of survey stations due to average investigation scopes within physical impact ranges applied 60~70% of all numbers in investigation stations. Numbers of survey stations due to maximum survey ranges within physical impact scopes applied 10~20% of all numbers in survey stations. So, improvement measures were deducted. Finally, according to prediction ranges in impact of various coastal development projects, several kinds of conclusions are suggested. And, it is thought to be able to use as fundamental database to select investigation stations in marine organisms through this study.

• 한국수산과학회지
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• 제46권1호
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• pp.1-9
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• 2013

Fisheries' biological resources were considered public resources before the 1990s. Every country could access and use these resources without regulation. However, the United Nations adopted the Convention on Biological Diversity and the privileges and rights to these resources were attributed to countries. This research starts with the research background and social and academic value of "The Jasan Eobo (or Report on Marine Organisms in the Coastal Waters near Heuksan Island)" by Jeong Yak-Jeon, who pioneered the new field of Fisheries Science and Marine Biology in Korea in the early 1800s. We also searched for recent results from the Marine Bio-Diversity Research Activities of the Korean National Council for Conservation of Nature (KNCCN) and the Ministry of Maritime Affairs and Fisheries (MOMAF). KNCCN reported that marine bio-diversity comprised approximately 6,500 species in 1996, and the Ministry of Maritime Affairs and Fisheries reported there were about 10,000 species in 2007. Among these marine species, plankton account for about 25%, seaweeds 11%, invertebrates 52%, and vertebrates 12% in Korean Coastal Areas. The Ministry for Food, Agriculture, Forestry, and Fisheries (MIFAFF) enacted a law for Agriculture and Fisheries Resources Management in 2012; this law includes the preservation of marine ecosystems, the conservation of wetlands and the preservation of fisheries resources, and describes the boundary of taxonomy for new species and unknown species that could be identified in the near future. To follow the new regulation for Access to General Resources and Benefit-Sharing, this research suggests (1) the importance of taxonomy for new species and unknown species as a goal of "No Name = No Information", (2) integrated research on bio-diversity, species distributions and the abundance of fisheries resources, both in local areas and in Korean Coastal Areas, and (3) the observance of international regulations or agreements for benefit-sharing without additional damage in the future.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 추계학술발표회
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• pp.236-236
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• 2017

Effluent treated by an NaDCC injection method in Ballast water management system (BWMS) contains reactive chlorine species and disinfection by-products (DBPs). In this study, we conducted whole effluent toxicity (WET) testing and ecological risk assessment (ERA) to investigate its ecotoxicological effects on marine environment. WET testing was carried out for four marine pelagic and freshwater organisms, i.e., diatom Skeletonema costatum, Navicula pellicuosa, chlorophyta Dunaliella tertiolecta, Pseudokirchneriella subcapitata, rotifer Brachionus plicatilis, Brachionus calyciflorus and fish Cyprinodon variegatus, Pimephales promelas. The biological toxicity test revealed that algae was the only biota that showed apparent toxicity to the effluent; it showed no observed effect concentration (NOEC), lowest observable effect concentration (LOEC) and effect concentration of 50% (EC50) values of 25-50%, 50-100% and >100%, respectively, at three water condition, but did not show any significant toxicities on other biota. Meanwhile, chemical analysis revealed that the BWMS effluent contained total residual oxidants (TROs) below $0.03{\mu}g/L$ and a total of 25 DBPs such as bromate, volatile halogenated organic compounds (VOCs), halogenated acetonitriles (HANs), halogenated acetic acids (HAAs), chloropicrin and Isocyanuric acid. Based on ERA, the 25 DBPs were not considered to have persistency, bioaccumulation and toxicity (PBT) properties. The ratio of predicted environmental concentration (PEC) to predicted no effect concentration (PNEC) of the other DBPs did not exceed 1 for General harbor environment. However, four substances (Isocyanuric acid, Tribromomethane, Chloropicrin and Monochloroacetic acid) were exceed 1 for Nearship environment. But observed toxicity in the test water on algal growth inhibition would be mitigated by normal dilution factor of 5 applied for nearship exposure. Thus, our results of WET testing and ERA showed that the BWMS effluent treated by NaDCC injection method would have no adverse impacts on marine environment.

• 해양환경안전학회지
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• 제12권2호
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• pp.157-163
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• 2006

현재 대기중 $CO_2$ 농도를 감소시키기 위하여 $CO_2$를 해양에 격리 처리하고자 하는 방안이 모색되고 있으나 이러한 방안은 해양생물 및 생태계에 미치는 영향 정도에 따라 그 실현가능성이 결정될 것이다. 본 연구에서는 $CO_2$ 해양격리 처리와 관련하여 수행되어온 연구들을 정리하고, $CO_2$ 농도가 높아진 해양환경에서의 해양생물 특히 어류를 대상으로 수행된 최근의 연구결과를 정리하였다. $CO_2$ 농도의 증가는 어류에 있어 산염기조절, 호흡순환기적 조절 등과 같은 생리적 기능에 영향을 끼치고 결국 어류의 폐사를 초래할 것이다. $CO_2$가 해양생물에게 어떠한 영향을 미치는가에 대한 연구는 주로 천해어종을 대상으로 하여 진행되어 왔으나 향후의 연구는 천해어종에 대한 연구결과를 바탕으로 $CO_2$가 실제로 격리 처리되는 심해에서 $CO_2$에 대한 생물들의 응답에 관하여 조사할 필요가 있다.

• 환경영향평가
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• 제30권2호
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• pp.61-74
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• 2021

본 연구에서는 해양에서 진행되는 개발사업으로 인하여 해양환경에 미치는 영향을 효율적으로 판단할 수 있는 평가지수들을 비교·검토하였다. 해양수질 분야에는 수질평가지수(WQI), 해양저질 분야에는 유해화학물질 정화지수(CIHC), 부영양화 정화지수(CIET), 농축계수(EF), 해양저서생물 분야에는 저서건강도지수(BHI), 저서오염지수(BPI)를 선정하였다. 개발사업에서 관측된 자료를 각각의 평가지수에 적용하여 평가지수의 특성 및 효용성을 파악하였다. 수질평가지수, 유해화학물질 정화지수, 저서건강도지수가 평가방법 및 평가기준이 명확히 정의되어 있으며, 통합적인 환경영향 분석이 가능하였다. 동 연구에서 제시된 지수이외에도 해양환경을 평가하는 다양한 지수가 있으며, 사업별 특성에 따라 적합한 지수를 활용하는 것도 중요하다.

• 한국수산과학회지
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• 제56권4호
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• pp.438-448
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• 2023

The concentrations of trace metals and organic matters in marine sediments collected from southeast Korean coastal areas were investigated. The primary purpose of this study was to evaluate the contamination status, spatial distribution and potential ecological risks associated with the physiochemical composition in the studied areas. We found that the concentrations of trace metals in marine sediments were as follows: Fe > Mn > Zn > Cr > Pb > Cu > As > Cd > Hg. According to the sediment quality guidelines (SQGs) of Korea, concentrations of Zn, Cr, Cu and Cd at all sampling sites were below threshold effect levels (TEL). However, concentrations of As, Hg, and Pb (i.e., at the 94-98% of sampling sites), were below the TEL. In addition, concentration factors (CF) in the surveyed area were found to be associated with low ecological risks, whereas As, Hg, and Cu showed moderate to high risk levels in some inner parts of the studied bays. Finally, the pollution load index (PLI) and ecological risk index (ERI) of the elucidated metals were linked to moderate ecological risk, pointing to the possibility of being deleterious to some benthic organisms.

• 한국식품위생안전성학회지
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• 제35권5호
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• pp.411-418
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• 2020

본 연구에서는 제외국 관리 해양생물독소인 YTXs의 원인조류, 독화생물, 국내·외 관리현황 및 분석법에 대해 리뷰하였다. 현재까지 YTXs에 의한 국내 수산물 오염이 보고된 사례는 없지만 기후변화로 인한 국내 연안 해역의 아열대화로 독성조류의 국내 유입 가능성이 있을 뿐 아니라 외국의 경우 YTXs에 의한 오염이 빈번하게 발생하고 있기 때문에 해당 국가로부터 수입되는 수산물의 경우 잠재적인 오염가능성이 있어 이에 대한 선제적 대응이 필요하다. YTXs는 와편모조류인 Protecratium reticulatum, Gonyaulax polygramma, Gonyaulax spinifera과 Lingulodinium polyedrum에 의해 생성되는 것으로 알려져 있으며, 이들은 국내 연안에도 출현한다. 현재 패류 내 YTXs는 메탄올 추출, SPE 카트리지 정제 후 LC-MS/MS를 이용하여 분석하고 있다. YTXs, pectenotoxins, azaspiracids와 같은 지용성 패독은 추출 및 정제 등의 전처리 과정이 유사하여 동시분석이 가능할 것으로 보이며, 이에 대한 분석법 최적화가 필요하다. 향후 국내 해역의 YTXs의 원인조류 출현 및 국내 유통(국내산 및 수입산) 수산물의 오염에 대한 지속적인 모니터링이 필요하다.