Current status of bacteriological parameters and DOC/POC in Xiamen coastal waters

The surface and bottom waters samples were collected from six locations in Xiamen western sea. The quantified estimation of bacterial production (³H-thymidine method) and observation of bacterial heterotrophic activity (¹⁴C-glucose method) have been made in order to have a better understanding of the role of marine bacteria and their activities. The results showed that the mean value of bacterial heterotrophic activity was 9×10⁸ cells/(L.h) in the surface waters and 2.6×10⁸ cells/(L.h) in the bottom waters. The mean value of bacterial production was 38×10⁸ cells/(L.h) in the surface waters and 7.1×10⁸ cells/(L.h) in the bottom waters. The relationship between bacterial production, heterotrophic activity, POC and DOC measured during this survey were discussed. The good understanding of the relationship between bacteria activity and total coliform was addressed.