Vertical distribution of bacterial abundance in the northwest pacific ocean |
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Authors: | Takeshi Naganuma Eiko Ikemoto Shunji Sukizaki Yoshito Tsuji Hiroshi Hotta |
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Institution: | (1) Deep Sea Research Department, Japan Marine Science and Technology Center (JAMSTEC), 2-15 Natsushima-cho, 237 Yokosuka, Japan |
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Abstract: | Mixed populations of free-living marine bacteria were collected at depths from the surface to the bottom (1,960m in Suruga Bay and 1,585 m in the Japan Sea) in the northwest Pacific during deep-sea diving by the submersible,Shinkai 2000. Their abundance in total cell counts and in lipopolysaccharide (LPS) concentration was found to decrease with increasing depth, and the decreasing profiles were shown to be linear on logarithmic scales. The total cell counts and the LPS concentration showed a linear relationship on arithmetic scales, and the LPS content per cell was found to be 1.02×10–14 g. |
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