Effects of an artificial breakwater on the distributions of planktonic microbial communities SCOPUS KCI

Title
Effects of an artificial breakwater on the distributions of planktonic microbial communities
Author(s)
Kim, Y.-O.; Yang, E.J.; Kang, J.-H.; Shin, K.; Chang, M.; Myung, C.S.
KIOST Author(s)
Kim, Young Ok(김영옥)Kang, Jung Hoon(강정훈)Shin, Kyoungsoon(신경순)
Publication Year
2007
Abstract
The summer distributions of planktonic microbial communities (heterotrophic and phtosynthetic bacteria, phtosynthetic and heterotrophic nanoflagellates, ciliate plankton, and microphytoplankton) were compared between inner and outer areas of Lake Sihwa, divided by an artificial breakwater, located on the western coast of Korea, in September 2003. The semi-enclosed, inner area was characterized by hyposaline surface water (<17 psu), and by low concentrations of dissolved oxygen (avg. 0.4 mg L-1) and high concentrations of inorganic nutrients (nitrogenous nutrients >36 μM, phosphate >4 μM) in the bottom layer. Higher densities of heterotrophic bacteria and nanoflagellates also occurred in the inner area than did in the outer area, while microphytoplankton (mainly diatoms) occurred abundantly in the outer area. A tiny tintinnid ciliate, Tintinnopsis nana, bloomed into more than 106 cells L-1 at the surface layer of the inner area, while its abundance was much lower (103-104 cells L-1) in the outer area of the breakwater. Ciliate abundance was highly correlated with heterotrophic bacteria (r=0.886, p < 0.001) and heterotrophic flagellates (r=0.962, p<0.001), indicating that rich food availability may have led to the T. nana bloom. These results suggest that the breakwater causes the eutrophic environment in artificial lakes with limited flushing of enriched water and develops into abundant bacteria, nanoflagellates, and ciliates.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4763
DOI
10.1007/BF03020906
Bibliographic Citation
Ocean Science Journal, v.42, no.1, pp.9 - 17, 2007
Publisher
Korea Ocean Research and Development Institute
Subject
abundance; algal bloom; bacterium; breakwater; dissolved oxygen; flagellate; heterotrophy; microbial community; microplankton; phytoplankton; salinity; Bacillariophyta; Ciliophora; Mastigophora (flagellates); Tintinnida; Tintinnopsis nana
Keywords
Bloom; Breakwater; Ciliates; Heterotrophic bacteria; Microphytoplankton; Nanoflagellates
Type
Article
Language
English
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Marine ecology,Plankton,Protists,해양생태,부유생물,원생생물

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