The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Analysis of Macrobenthic Community Structure in an Intertidal Flat in Hakseong-ri, Boryeong, Korea

보령 학성리 갯벌 조간대 대형저서동물 군집구조 분석

  • YANG, DONGWOO (Department of Ecology and Conservation, National Marine Biodiversity Institute of Korea) ;
  • LEE, JUNG-HO (Department of Marine Biotechnology, Anyang University) ;
  • KIM, HARYUN (East Sea Research Institute, Korea Institute of Ocean Science and Technology) ;
  • BAE, HANNA (School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University) ;
  • PARK, JINSOON (Department of Convergence Study on the Ocean Science and Technology & Department of Ocean Science, Korea Maritime and Ocean University) ;
  • KIM, HYE SEON (Department of Ecology and Conservation, National Marine Biodiversity Institute of Korea)
  • 양동우 (국립해양생물자원관 생태보전실) ;
  • 이정호 (안양대학교 해양바이오시스템공학과) ;
  • 김하련 (한국해양과학기술원 동해연구소) ;
  • 배한나 (서울대학교 지구환경과학부 및 해양연구소) ;
  • 박진순 (한국해양대학교 해양환경학과 및 해양과학기술전문대학원 해양과학기술융합과) ;
  • 김혜선 (국립해양생물자원관 생태보전실)
  • Received : 2020.10.28
  • Accepted : 2021.05.31
  • Published : 2021.08.31
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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.

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. 대형 저서동물은 총 79종이 출현하였고, 평균서식밀도는 611 ind./m2, 평균생물량은 64.1 gWWt/m2이었다. 상위 우점종은 니질 갯벌에 서식하는 고리버들갯지렁이(Heteromastus filiformis), 칠게(Macrophthalmus japonicus)와 쏙(Upogebia major)이며, 서식밀도는 각각 297 ind./m2(48.6%), 62 ind./m2(10.1%), 42 ind./m2(6.9%)으로 나타났다. 집괴분석으로 분류된 3개의 정점군은 물리·화학적인 환경요인 보다는 생물상호 작용과 우점종 출현비율 등으로 구분되었으며, nMDS 분석으로 살펴본 대형저서동물 군집은 계절적 변동양상을 보였다.

Keywords

Acknowledgement

이 논문은 국립해양생물자원관 연구사업 "해양수산생명자원 보전 및 복원 방안 연구(2021M00300)"의 연구비 지원에 의해 작성 되었습니다.

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