The Distribution Of The Heterotrophic Bacteria In The East China Sea And Yellow Sea

We investigated the distribution of the heterotrophic bacteria with the Epifluorescence microscope and measured the bacterial production with the Tritiated Tymicline Incorporation method, and we investigated the correlation between the heterotrophic bacteria and chlorophyll, inorganic nitrogen also.There was distinct spatial distribution of the bacterial biomass in the East China Sea and the Yellow Sea during fall and spring. The bacterial biomass decreased with the distance far away the coast on most of transects in fall and spring. In fall and spring the bacteria abundance decreased with the distance away the coast in the Yellow Sea and it decreased from the Changjiang River Estuary as a center to outward in the East China Sea. The bacteria abundance was comparable in both seasons. The discharge of Changjiang River and resespension might make great influence to the spatial patterns of the bacterial biomass. The correlation between the IBB, IPB and INO3- in East China Sea and Yellow Sea were different. The Integrated Bacteria Biomass was higher in spring than it was in fall in the Yellow Sea, on the contrary it was higher in fall than it was in spring in the East China Sea. The bacterial production was higher in fall than it was in spring in the East China Sea and Yellow Sea. The bacterial growth rat was higher in fall that it was in spring. The ratio of BP:PP was higher in fall than it was in spring and it was higher in the East China Sea than it was in the Yellow Sea. There seemed no correlations between the Bacterial abundance and the chlorophyll, inorganic nitrogen in spring. So did the bacterial production. The correlation between the bacteria abundance and the chlorophyll was more obviouslyin the East China Sea than it was in the Yellow Sea. The correlation between the bacteria abundance and the nitrate, the total inorganic nitrogen was obvious in both sea areas during fall.The bacterial abundance changed with the cell number of phytoplankton in a day with the time serial. The bacterial abundance changed seasonal in a year round. It was lowest in winter and it was comparable in spring and in fall.