• Hydrogeochemical Characteristics and Microbial Community Structures of Freshwater in Ulleung Island

  • Dong-Hun Kim1, Byong Wook Cho1, Byeong Dae Lee1*, Jung-Yun Lee1,2, Yong Hwa Oh3

  • 1Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, 34132, Republic of Korea
    2Department of Biosystems Science, Chungbuk National University, Cheongju 28644, Republic of Korea
    3Department of Convergence Study on the Ocean Science and Technology, Korea Maritime & Ocean University, Busan 49112, Republic of Korea

  • 울릉도 담수의 수리지화학적 특성 및 미생물 군집 구조

  • 김동훈1, 조병욱1, 이병대1*, 이정윤1,2, 오용화3

  • 1한국지질자원연구원 기후변화대응연구본부 지하수환경연구센터
    2충북대학교 자연과학대학 생명시스템학과
    3국립한국해양대학교 해양과학기술전문대학원 해양과학기술융합학과

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study investigated the hydrogeochemical and microbiological characteristics of freshwater on Ulleung Island, a volcanic island in the Ulleung Basin on the East Coast of Korea. The shallow groundwater (CSW, NRGW) and the surface water (SISW) samples are classified as Na-HCO3 type, reflecting an alkaline rock type and an oxidizing environment due to the influence of a highly permeable pyroclastic rock layer. In contrast, the deep groundwater sample (DMW) is classified as Ca-HCO3 type, suggesting the influence of deep-sourced carbon dioxide and reducing conditions. Microbial communities in the water samples are generally dominated by Proteobacteria, with the relative abundance of major genera varying depending on water quality and environmental conditions. Network analysis reveals the ecological characteristics of microbial communities adapted to specific environments. The presence of pathogenic genera in the shallow groundwater suggests potential groundwater contamination, necessitating appropriate management to ensure its use as drinking water or domestic water. The findings of this study provide valuable insights into the ecological characteristics of Ulleung Island’s groundwater resources and can inform future groundwater management strategies.


Keywords: Ulleung Island, Groundwater, Microbial community, Hydrogeochemistry,

This Article

  • 2024; 29(3): 1-13

    Published on Jun 30, 2024

  • 10.7857/JSGE.2024.29.3.001
  • Received on May 20, 2024
  • Revised on Jun 2, 2024
  • Accepted on Jun 24, 2024

Correspondence to

  • Byeong Dae Lee

  • Groundwater Environment Research Center, Climate Change Response Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, 34132, Republic of Korea

  • E-mail: donghun@kigam.re.kr