Abundance and productivity of bacterioplankton in a eutrophication gradient of Shimoda Bay |
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Authors: | Takeshi Naganuma Humitake Seki |
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Affiliation: | (1) Institute of Biological Sciences, University of Tsukuba, 2-1-1 Tennoudai, 305 Tsukuba, Japan;(2) Present address: Deep Star Program, Japan Marine Science and Technology Center, 2-15 Natsushimacho, 237 Yokosuka, Japan |
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Abstract: | Abundance, specific growth rate, and productivity of bacterioplankton were investigated over a year in Shimoda Bay, Japan, with reference to the eutrophication parameters such as dissolved organic carbon (DOC) concentration. The results from six stations in the bay indicated the formation of a eutrophic gradient ranging from eutrophic (at a river mouth) to mesotrophic (at the bay mouth) levels. Both DOC concentration and UV absorbance were found to have good correlations to bacterioplankton abundance and productivity within the eutrophication range of Shimoda Bay. |
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