Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Ecology of Groundwater Microorganisms in Aquifers

대수층 지하수 미생물의 생태

  • Kim, Young-Hwa (Department of Environmental Engineering, Dong-A University) ;
  • Ahn, Yeonghee (Department of Environmental Engineering, Dong-A University)
  • 김영화 (동아대학교 공과대학 환경공학과) ;
  • 안영희 (동아대학교 공과대학 환경공학과)
  • Received : 2017.09.12
  • Accepted : 2017.09.20
  • Published : 2017.09.30
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Abstract

There is growing interest in groundwater resources to overcome the loss of surface water resources due to climate change. An understanding of the microbial community of aquifers is essential for monitoring and evaluating groundwater contamination, as well as groundwater management. Most microorganisms that inhabit aquifer ecosystems are attached to sediment particles rather than planktonic, as is the case in groundwater. Since sampling aquifer sediment is not easy, groundwater, which contains planktonic microorganisms, is generally sampled in microbial community research. Although many studies have investigated microbial communities in contaminated aquifers, there are only a few reports of microbial communities in uncontaminated or pristine aquifers, resulting in limited information on aquifer microbial diversity. Such information is needed for groundwater quality improvement. This paper describes the ecology and community structure of groundwater bacteria in uncontaminated aquifers. The diversity and structures of microbial communities in these aquifers were affected by the concentration or distribution of substrates (e.g., minerals, organic matter, etc), in addition to groundwater characteristics and human activities. Most of the microbial communities in these uncontaminated aquifers were dominated by Proteobacteria. Studies of microbial communities in uncontaminated aquifers are important to better understand the biogeochemical processes associated with groundwater quality improvement. In addition, information on the microbial communities of aquifers can be used as a basis to monitor changes in community structure due to contamination.

기후변화로 인한 지표수 자원의 손실에 대비하기 위해 지하수 자원에 대한 관심이 대두되고 있다. 지하수 오염에 대한 모니터링 및 평가뿐 아니라 지하수 자원 관리를 위해 대수층 미생물 군집에 대한 이해가 필요하다. 대수층에서 미생물은 지하수에 부유하는 것보다 대부분이 대수층 퇴적토 입자 표면에 부착해서 서식한다. 하지만 대수층 퇴적토 시료 채취가 쉽지 않으므로 대부분의 대수층 미생물 군집 연구는 관정으로부터 채취한 지하수 시료의 부유 세포를 이용하였다. 오염된 대수층에서 미생물 군집에 대한 연구는 비교적 많으나, 오염되지 않은 대수층에서의 미생물 다양성과 수질개선을 위한 그들의 역할에 대한 정보는 여전히 부족한 실정이다. 본 논문에서는 대수층 지하수 내에 존재하는 세균의 생태와 군집 구조에 관해 기술하였다. 지금까지 보고된 연구에 의하면 오염되지 않은 대수층 지하수 미생물 군집은 대부분 Proteobacteria가 우세한 것으로 나타났다. 이들은 대수층 내의 기질(광물, 유기물 등)의 농도나 분포, 지하수의 성상, 인간의 활동 등에 영향을 받는다. 오염되지 않은 대수층 지하수 미생물 군집에 관한 연구는 지하수의 수질 개선에 관련된 생지화학적 과정을 더 잘 이해하기 위해 중요하며, 또한 대수층 오염에 따른 군집 변화를 모니터링 하기 위한 기초 자료로 이용될 수 있다.

Keywords

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