和歌山県浦神湾における海水中の従属栄養細菌群

概要

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記事区分：原著The population of heterotrophic bacteria in the water of Uragami Bay, near the Cape of Shionomisaki on the Kii Peninsula, was studied for the 9 months from May 1992 to January 1993. The count of heterotrophic bacteria on the surface, middle, and bottom layers rose and remained high when the water temperature tended to rise, and fell when the water temperature cooled. The count of such bacteria in the deepest portion of the bay was generally higher than that in the center or mouth of the bay. The size of the population of heterotrophic bacteria and the water temperature were correlated (p<0.05) on the surface of the deep portion only. In the center and mouth of the bay, the population count had peaks and valleys when temperature differences between layers decreased or increased, respectively, while the water temperature tended to rise. Of all bacteria identified, 27.4% were Moraxella, 26.3% were Pseudomonas, and 9.2% were Vibrio; other genera were less numerous. Changes in the population of heterotrophic bacteria may result from thermal factors in the deep portion of Uragami Bay and from the influx and efflux of open seawater in the center and mouth of the bay.
近畿大学の論文
1994-03-15