Bacterial Growth Efficiency on Natural Dissolved Organic Matter

摘要

Bacterial growth efficiency was examined in batch cultures and continuous flow cultures. Natural assemblages of pelagic bacteria were inoculated into particle free water and growth efficiencies determined from measurements of produced particulate organic carbon (POC) and utilized dissolved organic carbon (DOC). On the average, 6% of the DOC was consumed during growth in batch cultures. Depending on the sampling locality, consumed DOC was converted to bacterial biomass with efficiencies ranging from 24% to 59%. The efficiency did not correlate with either concentration or consumption of DOC.