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Attached and free‐liviing dividing bacteria in two aquatic systems
Author(s) -
Iriberri J.,
Unanue M.,
Ayo B.,
Barcina I.,
Egea L.
Publication year - 1990
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1990.tb01282.x
Subject(s) - biomass (ecology) , particulate organic carbon , total organic carbon , bacteria , nutrient , dissolved organic carbon , environmental chemistry , bacterioplankton , aquatic ecosystem , environmental science , free water , ecology , biology , chemistry , environmental engineering , phytoplankton , genetics
The percentage of dividing biomass was calculated for attached and free‐living bacteria, in a coastal marine and a freshwater system. In the marine system with low concentrations of total and dissolved organic carbon (TOC and DOC) the percentage of dividing biomass was higher for attached (41.4 ± 13.9) than for the free‐living bacteria (22.0 ± 11.7). However, in the freshwater system, which had a higher concentration of TOC and DOC, the percentage of dividing biomass was similar for both communities‐attached (53.4 ± 26.5) and free‐living (78.4 ± 21.9). Thus the attachment to particulate material is not necessarily an advantage in waters where dissolved organic nutrients are readily available.