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

  • 제28권4호
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  • Pages.143-157
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  • 2023
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  • 1226-2978(pISSN)
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  • 2671-8820(eISSN)
한국해양학회 (The Korean Society of Oceanography)
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보령 갯벌의 인위적 영향 및 생물학적 요인에 따른 대형저서동물 군집 변화

Changes in Macrobenthic Community Depending on the Anthropogenic Impact and Biological Factors of Boryeong Tidal Flat, Korea

  • 전승렬 (국립수산과학원 갯벌연구센터) ;
  • 옹기호 (제주대학교 해양생명과학과) ;
  • 이지호 (국립수산과학원 갯벌연구센터) ;
  • 정윤아 (국립수산과학원 갯벌연구센터) ;
  • 구준호 (국립수산과학원 갯벌연구센터) ;
  • 오광석 (해온부유생태연구소) ;
  • 박종우 (국립수산과학원 갯벌연구센터)
  • SEUNG RYUL JEON (Tidal Flat Research Center, National Institute of Fisheries Science) ;
  • GIHO ONG (Department of Marine Life Science, Jeju National University) ;
  • JIHO LEE (Tidal Flat Research Center, National Institute of Fisheries Science) ;
  • YUNA JEONG (Tidal Flat Research Center, National Institute of Fisheries Science) ;
  • JUN-HO KOO (Tidal Flat Research Center, National Institute of Fisheries Science) ;
  • KWANG-SEOK O (Haeon Plankton Ecology Research Institute) ;
  • JONG-WOO PARK (Tidal Flat Research Center, National Institute of Fisheries Science)
  • 투고 : 2023.09.08
  • 심사 : 2023.11.22
  • 발행 : 2023.11.30
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초록

본 연구는 바지락과 쏙의 서식 구역이 대비되는 보령 주교 갯벌의 인위적인 환경 영향에 의한 저서동물 군집 특성을 확인하였다. 조사 기간 내 대형저서동물은 총 55종이 출현하였으며, 평균 서식밀도는 338 ind./m2, 생체량은 212.2 gWWt/m2이었다. 출현 종수는 상부(27종)에서 하부(37종)로 갈수록 증가하였고, 우점종은(상부: 둥근가시사자머리참갯지렁이, 중부: 고리버들갯지렁이, 하부: 바지락) 조위별로 다르게 나타났다. 집괴분석과 다차원척도법을 이용한 상위 10종의 저서동물 군집구조는 하부의 바지락 어장과 쏙 서식공 밀도가 높은 중부 정점 중심의 두 그룹으로 나뉘며, 특정 생물 종의 영향을 반영하였다. 쏙 서식 공간의 퇴적물 입도 조성은 변동 폭이 컸으나 연간 유지되었으며, 분급은 2.1 𝜑로 낮아져 같은 입자로 구성된 비율이 증가하였다. 특히, 중부는 인위적인 영향이 높음에도 고리버들갯지렁이가 우점하고, 쏙 서식공 밀도와의 연관성을 보여 이는 종간 상호작용에 기인하는 것으로 판단된다.

This study confirmed the characteristics of macrobenthic community due to anthropogenic environmental changes in the Boryeong Jugyo tidal flat, where the habitat of manila clam (Ruditapes philippinarum) and mud shrimp (Upogebia major) is separated. The total number of occurring species was 55 during the study period with an average habitat density of 338 ind./m2 and a biomass of 212.2 gWWt/m2. The number of occuring species increased from 27 species at the upper flat to 37 species at the lower flat, and the dominant species differed by tide levels (Upper: Leonnates persica, Middle: Heteromastus filiformis, Lower: R. philippinarum). The macro-benthic community sturctures of the top 10 species using cluster analysis and nMDS were divided into two groups, focusing on Manila clam culture farm of lower flats and middle flats with high habitat density, reflecting the influence of specific species. The sediment composition of the U. major habitat space fluctuated highly, but it was maintained annually, and the sorting coefficient was 2.1 𝜑, and the proportion of the same particle size was increased. In particular, because the middle flat has a dense anthropogenic impact, a dominant species, H. filiformis dominated and revealed a relationship with the density of burrow holes of U. major, which is considered to be a biological interaction between these two macrofauna in this tidal flat.

키워드

과제정보

이 논문은 국립수산과학원 수산과학연구사업 '연안어장 환경조사 및 변동연구(R2023014)'의 연구비 지원에 의해 작성되었습니다. 그리고 수정 사항을 세심히 지적해 주신 심사위원분들께 감사드립니다.

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