In:
Marine and Freshwater Research, CSIRO Publishing, Vol. 53, No. 1 ( 2002), p. 1-
Abstract:
Temporal variations in dissolved oxygen, nutrient concentrations and oxygen
utilization rates ( 〈 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 〈 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–1 at 10 m depth, and from 0.8 to 5.0 M
day–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: 1.6–17.2% and 1.4–23.6%, respectively.
With the bacterial growth efficiencies 〈 25%, the bacteria in Funka
Bay acted as a net sink of carbon, where 〉 75% of the organic matter
flux through bacteria could be mineralized to CO2.
Type of Medium:
Online Resource
ISSN:
1323-1650
Language:
English
Publisher:
CSIRO Publishing
Publication Date:
2002
detail.hit.zdb_id:
1283028-8
SSG:
12
SSG:
21,3
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