Chemical-, site-, and taxa-dependent benthic community health in coastal areas of the Bohai Sea and northern Yellow Sea: A sediment quality triad approach

Khim, Jong Seong,Park, Jinsoon,Song, Sung Joon,Yoon, Seo Joon,Noh, Junsung,Hong, Seongjin,Kwon, Bong-Oh,Ryu, Jongseong,Zhang, Xiaowei,Wang, Tieyu,Lu, Yonglong,Giesy, John P. Elsevier 2018 The Science of the total environment Vol.645 No.-

<P><B>Abstract</B></P> <P>To investigate benthic ecological quality associated with coastal pollution in the Bohai Sea and northern Yellow Sea, a sediment quality triad (SQT) approach was applied. Chemical (six groups of persistent toxic substances (PTSs) and 8 metals and metalloids), toxicological (AhR-mediated potency), and ecological (bacterial and meiofaunal communities) elements were selected and used in an integrated sediment assessment. The benthic meiofaunal community was newly analyzed and used as an additional component of the infaunal community during the SQT. Concentrations of chemicals and potential toxicity in sediments both indicated moderate to severe pollution in the study area, characterized by site-specific and land-uses. In particular, As, DDTs, and bioassay-derived dioxin equivalents exceeded corresponding sediment quality guidelines at nearly all locations. Limited occurrences of meiofaunal taxa (mean = 5.2) and relatively low species diversity, mainly comprised of nematodes (75.3%) and copepods (14.6%), among locations was generally consistent with pollution. The benthic community was consistent with compound-specific responses to gradients of contamination, particularly for As. Densities of two taxa, Nematoda and Nemertea exhibited strong negative correlations with concentrations of As. Compound-, site-, and taxa-specific variability of pollution of sediments was further supported by results of cluster analysis (CA) and nonmetric multidimensional scaling (NMDS). Finally, assessment integrating five benthic quality elements, including: 1) PTSs; 2) metals and metalloids; 3) sediment toxicity; 4) sediment microbiome; and 5) benthic meiofaunal community, explained contamination of sediments associated with land-uses, locality, or habitat. Status of the benthic community could not be explained by single component and their associations were not quantitative. Results of the integrated assessment, considering multiple benthic quality elements were useful to address overall quality of sediment, and were consistent with chemical-, species-, or site-dependent pollution of sediments in the Bohai and Yellow Seas.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Extended-sediment quality triad was applied to enhance typical benthic assessment. </LI> <LI> Sediment toxicity might be over- or under-estimate chemical pollution and benthic health. </LI> <LI> Meiofaunal abundance would be a good ecological indicator of pollution by arsenic. </LI> <LI> Moderate to severe pollution evidenced in over half of the sampling locations. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

A comparative review and analysis of tentative ecological quality objectives (EcoQOs) for protection of marine environments in Korea and China

Khim, Jong Seong,Hong, Seongjin,Yoon, Seo Joon,Nam, Jungho,Ryu, Jongseong,Kang, Seong-Gil Elsevier 2018 Environmental pollution Vol.242 No.2

<P><B>Abstract</B></P> <P>Ecological quality objectives (EcoQOs), as tools for implementing ecosystem approach, have long been acknowledged to protect the marine ecosystems and fisheries in regional seas through joint efforts by surrounding countries over the past decade. The present review analyzed the best available meta-data relating to the five ecosystem elements that were recently proposed by the Northwest Pacific Action Plan to evaluate the current status of coastal ecosystem health in marine environment of the Yellow Sea. We suggested the six tentative EcoQOs among five ecological quality elements including: 1) biological and habitat diversity; 2) invasive species; 3) eutrophication; 4) pollutants; and 5) marine litters. Environmental status was assessed, depending on the EcoQOs targets, by comparison to the world average values, existing environmental standards, or reported values of other regional seas. Results of analysis revealed that among the six tentative EcoQOs, two target objectives to marine biodiversity and concentrations of nutrients (viz., DIN and DIP) were met towards good environmental status. Whilst, three EcoQOs relating to hypoxia and red-tide, pollutants (persistent toxic substances and metals), and marine litters (including microplastics) did not meet and one relating to invasive species could not be judged due to insufficient data sets. The biggest weak point for developing suitable EcoQOs and assessing status of ecosystem health could be insufficient meta-data sets available and/or discrepancy in methodological details cross the data-sets or between the two targeted countries. Thus, the cooperation of neighboring countries, viz., Korea and China for the Yellow Sea, is necessary for the ecosystem based management of our regional sea in the future. Overall, this first time review for the assessment of target tentative EcoQOs in the Yellow Sea region encompassing coasts of Korea and China would provide a better understanding of the current status of environmental pollution and ecosystem health.</P> <P><B>Highlights</B></P> <P> <UL> <LI> First reviewed ecological qualities of the Yellow Sea for the six tentative EcoQOs. </LI> <LI> EcoQOs for marine biodiversity and nutrient concentrations were met. </LI> <LI> EcoQOs for hypoxia and red-tide, pollutants, and marine litters were not meet. </LI> <LI> EcoQO for invasive species could not be judged due to insufficient meta-data. </LI> <LI> Further development and analyses of EcoQOs needed by joint efforts of Korea and China. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

A comparative review and analysis of tentative ecological quality objectives (EcoQOs) for protection of marine environments in Korea and China

Khim, Jong Seong,Hong, Seongjin,Yoon, Seo Joon,Nam, Jungho,Ryu, Jongseong,Kang, Seong-Gil Elsevier Science B.V., Amsterdam. 2018 Environmental pollution Vol.242 No.no.pb

A SURVEY ON MARINE DIATOM FOGEDIA (BACILLARIOPHYCEA) WITH DESCIPTIONS OF SIX NEW SPECIES FROM THE KOREAN SAND FLAT

Jinsoon Park,Jongseong Khim,Chul-Hwan Koh,Taisuke Othsuka,Andrzej Witkowski 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6

First record of six naviculoid diatom genera from Korean tidal flats

Jinsoon Park,Jongseong Khim,Chul-hwan Koh 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5

Two Years after the <i>Hebei Spirit</i> OilSpill: Residual Crude-Derived Hydrocarbons and Potential AhR-MediatedActivities in Coastal Sediments

Hong, Seongjin,Khim, Jong Seong,Ryu, Jongseong,Park, Jinsoon,Song, Sung Joon,Kwon, Bong-Oh,Choi, Kyungho,Ji, Kyunghee,Seo, Jihyun,Lee, Sangwoo,Park, Jeongim,Lee, Woojin,Choi, Yeyong,Lee, Kyu Tae,Kim, AmericanChemical Society 2012 Environmental science & technology Vol.46 No.3

<P>The <I>Hebei Spirit</I> oil spill occurredin December2007 approximately 10 km off the coast of Taean, South Korea, on theYellow Sea. However, the exposure and potential effects remain largelyunknown. A total of 50 surface and subsurface sediment samples werecollected from 22 sampling locations at the spill site in order todetermine the concentration, distribution, composition of residualcrudes, and to evaluate the potential ecological risk after two yearsof oil exposure. Samples were extracted and analyzed for 16 polycyclicaromatic hydrocarbons (PAHs), 20 alkyl-PAHs, 15 aliphatic hydrocarbons,and total petroleum hydrocarbons using GC-MSD. AhR-mediated activityassociated with organic sediment extracts was screened using the H4IIE-<I>luc</I> cell bioassay. The response of the benthic invertebratecommunity was assessed by mapping the macrobenthic fauna. Elevatedconcentrations of residual crudes from the oil spill were primarilyfound in muddy bottoms, particularly in subsurface layers. In general,the bioassay results were consistent with the chemistry data in adose-dependent manner, although the mass-balance was incomplete. Moreweathered samples containing greater fractions of alkylated PAHs exhibitedgreater AhR activity, due to the occurrence of recalcitrant AhR agonistspresent in residual oils. The macrobenthic population distributionexhibits signs of species-specific tolerances and/or recolonizationof certain species such as <I>Batillaria</I> during weatheringperiods. Although the <I>Hebei Spirit</I> oil spill wasa severe oil exposure, it appears the site is recovering two yearslater.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/esthag/2012/esthag.2012.46.issue-3/es203491b/production/images/medium/es-2011-03491b_0001.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/es203491b'>ACS Electronic Supporting Info</A></P>

First record of six naviculoid diatom genera from Korean tidal flats

Jinsoon Park,Jongseong Khim,Chul-hwan Koh 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5

Distribution characteristics of the fish assemblages to varying environmental conditions in artificial reefs of the Jeju Island, Korea

Noh, Junsung,Ryu, Jongseong,Lee, Dowon,Khim, Jong Seong Elsevier 2017 MARINE POLLUTION BULLETIN Vol.118 No.1

<P><B>Abstract</B></P> <P>Artificial reefs (ARs) have long been practiced to manage and enhance fisheries resources worldwide. Here, we aimed to identify relevant indicator species for the specific environmental conditions of ARs by comparing fish diversity against control sites (Conts). We used a combination of non-metric multidimensional scaling and indicator value analysis to identify the indicator species of the specific AR environments. More individuals and species of fish were present in ARs compared to Conts. Water temperature over the seasons was the most important environmental factor associated with the trophic group composition of fish. In particular, macrocarnivores and benthic invertivores/cleaners closely reflected habitat conditions in a consistent manner. Some dominant fish species were detected at all sites, while the indicator species were more predominant under certain environmental conditions. Altogether, ARs should be monitored at regular intervals to optimize management of their health by detecting the community representativeness via indicator species.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Fish diversity was greater in artificial reefs vs. control sites on Jeju Island, Korea. </LI> <LI> Water temperature primarily regulated the fish community in artificial reefs. </LI> <LI> Indicator species at artificial reefs were delineated by NMDS tool and IndVal analysis. </LI> <LI> Habitat conditions of artificial reefs reflected distributional characteristics of typical fish groups. </LI> </UL> </P>

한국 갯벌의 우상형 돌말류 신종 4종에 대한 보고

김혜숙(Hyesuk Kim),김종성(Jongseong Khim),박진순(Jinsoon Park) 한국해양환경·에너지학회 2023 한국해양환경·에너지학회 학술대회논문집 Vol.2023 No.05

돌말류 분석 자료 정도 관리의 현황 및 전망

김혜숙,김종성,박진순,KIM, HYESUK,KHIM, JONGSEONG,PARK, JINSOON 한국해양학회 2021 바다 Vol.26 No.3

Diatoms are a type of microalgae which inhabits a wide variety of environments as one of the most important primary producers of freshwater and marine ecosystems. They have been widely used as bioindicators which represent the environmental characteristics, thus proper quality control of diatom data is very important to ensure for the researches from many scientists from various different regions to have scientific unity and objectivity. At present, diatom data analysis is primarily based both on morphological features and DNA sequences of given species. Challenge for the morphology-based analysis of diatoms is the consistent species identification among different taxonomists who interpret diatom community, while challenge for the molecular analysis of diatoms to secure reliable reference data. In the present study, we have reviewed the current status of data quality control of diatom analysis in Korea as well as the world. Finally, suggestions for the better data quality control for Korean marine diatoms have been also made. 돌말류는 미세조류의 일종으로서 담수 및 해양의 여러 다양한 환경의 수생태계에서 가장 중요한 1차 생산자 중 하나이다. 환경을 대표할 수 있는 생물 지표로서 널리 이용되고 있으며, 여러 지역에서 서로 다른 과학자들에 의한 연구 결과들이 과학적 통일성과 객관성을 갖추도록 하기 위해서는 돌말류 분석 자료의 정도 관리가 매우 중요하다. 현재 돌말류 분석은 형태적인 특징으로 분류하는 형태 기반의 분석과 DNA 서열로 종을 식별하는 DNA 바코드 분석이 사용되고 있다. 형태학 기반의 돌말류 분류는 분석 자료를 해석하는 분류학자들 간의 일관된 종 식별이 요구되는 한편 분자 분류 기반의 돌말류 분류는 신뢰성 있는 참조데이터가 필수적이다. 본 논문에서는 돌말류 분석 자료 정도관리의 국내외 현황을 우선 살펴보았으며, 그에 기반하여 국내 돌말류 분석 자료의 정도 관리에 대한 의견을 또한 제안하였다.