| impact of intensive land-based fish culture in qingdao, china, on the bacterial communities in surrounding marine waters and sediments. | the impact of intensive land-based fish culture in qingdao, china, on the bacterial communities in surrounding marine environment was analyzed. culture-based studies showed that the highest counts of heterotrophic, ammonium-oxidizing, nitrifying, and nitrate-reducing bacteria were found in fish ponds and the effluent channel, with lower counts in the adjacent marine area and the lowest counts in the samples taken from 500 m off the effluent channel. denaturing gradient gel electrophoresis (dgge) ... | 2011 | 21922024 |