
TY  - JOUR
A1  - Lee, Choon Weng 
A1  - Kudo, I. 
A1  - Yokokawa, T. 
A1  - Yanada, M. 
A1  - Maita, Y. 
T1  - Dynamics of bacterial respiration and related growth efficiency, dissolved nutrients and dissolved oxygen concentration in a subarctic coastal embayment
JF  - Marine and Freshwater Research
JO  - Mar. Freshwater Res.
Y1  - 2002
VL  - 53
IS  - 1
SP  - 1
EP  - 7
KW  - 
UR  - https://doi.org/10.1071/MF01003 
N2  - Temporal variations in dissolved oxygen, nutrient concentrations and oxygen utilization rates (&#60;0.7 m fraction) were recorded for almost two years in the subarctic Funka Bay, Japan. Dissolved inorganic nitrogen ranged from 0 to 26 M, phosphate from 0 to 2 M and silicate from 1 to 64 M. There was evidence of nitrogen limitation. Dissolved oxygen concentration ranged from 130 to 440 M, and decreased to &#60;150 M in the bottom layer in summer. The rate of oxygen utilization, attributed to bacterial respiration, ranged from 0.6 to 9.3 M day&#8211;1 at 10 m depth, and from 0.8 to 5.0 M day&#8211;1 at 90 m depth, and was the principal mechanism causing the decrease in dissolved oxygen in the bottom layer in the summer. Bacterial growth efficiencies calculated for the 10 m and 90 m depths were similar: 1.6&#8211;17.2% and 1.4&#8211;23.6%, respectively. With the bacterial growth efficiencies &#60;25%, the bacteria in Funka Bay acted as a net sink of carbon, where &#62;75% of the organic matter flux through bacteria could be mineralized to CO2. 
ER  -

