Open AccessEnhancement of inorganic nutrient regeneration in a eutrophic sediment–bottom water complex system by adding effective indigenous bacteria
Author(s) -
KARIM M Abdul,
FUKAMI Kimio,
PATEL Arun B
Publication year - 2003
Publication title -
fisheries science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.412
H-Index - 64
eISSN - 1444-2906
pISSN - 0919-9268
DOI - 10.1111/j.0919-9268.2003.00739.x
Subject(s) - eutrophication , sediment , organic matter , nutrient , bacteria , phosphorus , chemistry , environmental chemistry , botany , biology , ecology , paleontology , genetics , organic chemistry
To enhance heterotrophic activities for decomposing organic matter in a eutrophic bottom environment, two promising bacterial strains isolated from the study site, named Enterobacter sp. 9410‐O and Pseudomonas sp. W‐4 were introduced by absorbance onto porous substrates in the sediment‐bottom water complex system. Strain 9410‐O grew well at >20°C, considered as mesophilic, while the other strain W‐4 grew at a wide rage of temperatures from 5°C to 30°C and was psychrotolerant. Addition of 9410‐O stimulated net regeneration of inorganic nitrogen (DIN) and inorganic phosphorus (DIP) from the sediment by approximately four–fivefold at a high temperature of 26°C, but some stimulation was noticed at the lower temperature of 13°C. However, strain W‐4 stimulated DIN and DIP net regeneration both at low (13°C; approx. threefold) and high temperatures (26°C; approx. four–fivefold). These results suggest that the application of such effective bacteria as described here would be promising for the stimulation of self‐purification in the field of eutrophic bottom environments.