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http://dx.doi.org/10.5322/JES.2008.17.7.755

Environmental Characteristics and Distributions of Marine Bacteria in the Surface Sediments of Kamak Bay in Winter and Summer  

Lee, Dae-Sung (Department of Microbiology, Pukyong National University)
Kim, Yun-Sook (Department of Microbiology, Pukyong National University)
Jeong, Seong-Yun (Korea Bio-IT Foundry Center, Pusan National University)
Kang, Chang-Keun (Department of Biology, Pusan National University)
Lee, Won-Jae (Department of Microbiology, Pukyong National University)
Publication Information
Journal of Environmental Science International / v.17, no.7, 2008 , pp. 755-765 More about this Journal
Abstract
To investigate correlation between the distribution of marine bacteria and environmental characteristics in the surface sediments of Kamak Bay, chemical oxygen demand(COD), acid volatile sulfide(AVS), ignition loss(IL), total organic carbon(TOC), and total organic nitrogen(TON) were measured and analyzed at 7 stations in winter and summer. In winter, COD and AVS ranged from 13.45 mg/g to 30.06 mg/g(average: 23.58 mg/g) and from 0.03 mg/g to 1.04 mg/g(average: 0.63 mg/g), respectively. IL, TOC, and TON ranged from 8.03% to 11.41%(average: 9.41%), from 1.17% to 2.10%(average: 1.62%), and from 0.09% to 0.18%(average 0.15%), respectively. In summer, COD, AVS, IL, TOC, and TON ranged from 14.06 mg/g to 32.19 mg/g(average: 24.71 mg/g), from 0.03 mg/g to 1.11 mg/g(average: 0.66 mg/g), from 9.00% to 12.15%(average: 10.96%), from 1.27% to 2.12%(average 1.77%), and from 0.12% to 0.19%(average: 0.16%), respectively. These values were relatively higher than those in winter. Kamak Bay had high C/N ratio that might be resulted from the input of terrestrial sewage and industrial wastewater. The number of marine viable bacteria was $8.9{\times}10^4\;cfu/g$ in winter and $9.7{\times}10^5\;cfu/g$ in summer. The most abundant species were Pseudomonas spp., Flavobacterium spp., and Vibrio spp, in the surface sediments of Kamak Bay. It was found that the concentration of organic matters and viable bacterial cells in the inner part were relatively higher than those in the outer of Kamak Bay. The distribution of viable bacterial cells was closely influenced by environmental factors.
Keywords
Correlation coefficient; Environmental factors; Kamak Bay; Marine microflora;
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