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Seasonal Variation of Heterotrophic Bacteria of the Marine Ranching Ground of Tongyeong Coastal Water, Korea  

김말남 (상명대학교 생물학과)
임아현 (상명대학교 생물학과)
이진환 (상명대학교 생물학과)
김종만 (한국해양연구원)
Publication Information
Korean Journal of Environmental Biology / v.22, no.1, 2004 , pp. 75-82 More about this Journal
Abstract
Surface and bottom sea water samples were harvested from the 5 stations in the marine ranching ground of Tongyeong coastal water from year 2000 to 2002. Cell number of heterotrophic bacteria was determined by using the plate counting method to explore the variation of the cell population of heterotrophic bacteria. Sea water samples collected in summer (in July and August) contained much larger number of heterotrophic bacteria than those harvested in spring, autumn and winter. Heterotrophic bacteria were usually more abundant in surface sea than in bottom sea water. However the reverse was true for sea water collected in December 2001 and February 2002 due to suspended solids accumulating more abundantly in seabed area because of the slower convective current of the sea water in winter. Number of heterotrophic bacteria did not have a strong relationship with frequency of typhoon indicating that the path and powerfulness of the typhoon, localized torrential downpour and temperature variation accompanying the typhoon should be considered all together at the same time as well as the frequency of typhoon to explain clearly the variation of cell number of heterotrophic bacteria. The dominant species isolated from the marine ranching ground of Tongyeong were identified to be Pseudomonas fluorescens, Pseudomonas stutzeri, Acinetobacter lwoffii and Sphingomonas paucimobilis.
Keywords
heterotrophic bacteria; surface water; bottom water; marine ranching ground of Tongyeong coast;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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