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2021 Vol.26, Issue 3

Article

Analysis of Macrobenthic Community Structure in an Intertidal Flat in Hakseong-ri, Boryeong, Korea

보령 학성리 갯벌 조간대 대형저서동물 군집구조 분석

DONGWOO YANG1
,
JUNG-HO LEE2
,
HARYUN KIM3
,
HANNA BAE4
,
JINSOON PARK5
,
HYE SEON KIM6*
양 동우1
,
이 정호2
,
김 하련3
,
배 한나4
,
박 진순5
,
김 혜선6*
1Researcher, Department of Ecology and Conservation, National Marine Biodiversity Institute of Korea, Seocheon 33662, Korea
2Assistant Professor, Department of Marine Biotechnology, Anyang University, Ganghwa, Incheon 23038, Korea
3Senior Researcher, East Sea Research Institute, Korea Institute of Ocean Science and Technology, Uljin 36315, Korea
4Researcher, School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, Seoul 08826, Korea
5Assistant Professor, Department of Convergence Study on the Ocean Science and Technology & Department of Ocean Science, Korea Maritime and Ocean University, Busan 49112, Korea
6Senior Researcher, Department of Ecology and Conservation, National Marine Biodiversity Institute of Korea, Seocheon 33662, Korea
1국립해양생물자원관 생태보전실 전임연구원
2안양대학교 해양바이오시스템공학과 조교수
3한국해양과학기술원 동해연구소 선임연구원
4서울대학교 지구환경과학부 및 해양연구소 연구원
5한국해양대학교 해양환경학과 및 해양과학기술전문대학원 해양과학기술융합과 조교수
6국립해양생물자원관 생태보전실 선임연구원
*Corresponding Author
31 August 2021. pp. 167-182
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Abstract

This study was carried out to investigate temporal and spatial distribution of macrobenthic community and elucidate effects of environmental factors on change of community structure in an intertidal flat, Hakseong-ri, Boryeong, Korea. Field surveys were seasonally conducted to collect samples of sediment and macrobenthos using can core in triplicate at nine stations in 2016 and 2017. Our results showed that sediment had high mud content (above 60%) in most samples and mean content of loss on ignition was 2.3% in 2016. A total of 79 species was collected in the study site during the study period. Mean density and biomass were 611 ind./m2 and 64.1 gWWt/m2, respectively. Heteromastus filiformis was the dominant species (48.6%, 297 ind./m2) followed by Macrophthalmus japonicus (10.1%, 62 ind./m2) and Upogebia major (6.9%, 42 ind./m2). Three assembly groups resulted from cluster analysis were more distinguished by interaction between organisms and frequency of dominant species than by physical and chemical environment characteristics. In addition, macrobenthic community in the Hakseong intertidal flat showed seasonal changes based on non metric multidimensional scaling using species abundance.

Keywords
Hakseong-ri
Intertidal flat
Macrobenthic community
Cluster analysis

본 연구는 충남 보령 학성리 갯벌 조간대에서 대형저서동물의 시·공간적 분포 및 군집구조를 파악하고, 환경요인에 따른 군집구조 변동을 알아보고자 하였다. 현장조사는 2016년-2017년에 계절별로 9개 정점에서 캔코어(13 cm × 22 cm × 30 cm)를 이용하여 각 정점마다 3회 반복 채취 수행하였다. 퇴적환경은 전반적으로 니질 함량이 60% 이상이었으며, 유기물 함량은 평균 2.3%이었다. 대형저서동물은 총 79종이 출현하였고, 평균서식밀도는 611 ind./㎡, 평균생물량은 64.1 gWWt/㎡이었다. 상위 우점종은 니질 갯벌에 서식하는 고리버들갯지렁이(Heteromastus filiformis), 칠게(Macrophthalmus japonicus)와 쏙(Upogebia major)이며, 서식밀도는 각각 297 ind./㎡(48.6%), 62 ind./㎡(10.1%), 42 ind./㎡(6.9%)으로 나타났다. 집괴분석으로 분류된 3개의 정점군은 물리·화학적인 환경요인 보다는 생물상호 작용과 우점종 출현비율 등으로 구분되었으며, nMDS 분석으로 살펴본 대형저서동물 군집은 계절적 변동 양상을 보였다.

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Information
  • Publisher :The Korean Society of Oceanography
  • Publisher(Ko) :한국해양학회
  • Journal Title :The Sea Journal of the Korean Society of Oceanography
  • Journal Title(Ko) :한국해양학회지 바다
  • Volume : 26
  • No :3
  • Pages :167-182
  • Received Date : 2020-10-28
  • Revised Date : 2021-05-28
  • Accepted Date : 2021-05-31
  • DOI :https://doi.org/10.7850/jkso.2021.26.3.167
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