scholarly journals The Relationship between Ribulose Bisphosphate Concentration, Dissolved Inorganic Carbon (DIC) Transport and DIC-Limited Photosynthesis in the Cyanobacterium Synechococcus leopoliensis Grown at Different Concentrations of Inorganic Carbon

1989 ◽  
Vol 90 (2) ◽  
pp. 720-727 ◽  
Author(s):  
William P. Mayo ◽  
Ivor R. Elrifi ◽  
David H. Turpin
Keyword(s):  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Ribulose Bisphosphate ◽  
Synechococcus Leopoliensis ◽  
The Relationship

scholarly journals Temporal and Spatial Variations of Freshwater Reservoir Ages in the Loire River Watershed

Radiocarbon ◽  
2016 ◽  
Vol 58 (3) ◽  
pp. 549-563 ◽  
Author(s):  
C Coularis ◽  
N Tisnérat-Laborde ◽  
L Pastor ◽  
F Siclet ◽  
M Fontugne
Keyword(s):  
Inorganic Carbon ◽  
River Flow ◽  
Dissolved Inorganic Carbon ◽  
Dominant Factor ◽  
Reservoir Effect ◽  
Flow Discharge ◽  
Temporal And Spatial ◽  
Freshwater Reservoir ◽  
The Relationship ◽  
Loire River

AbstractIn order to map the freshwater reservoir effect (FRE) variability of the Loire River and its tributaries, spatial and temporal carbon isotope (13C and 14C) analyses of the dissolved inorganic carbon (DIC) were conducted. Sites were selected to represent the diversity of geological settings, soil type, and land use. Results show a large spatial variability of 14C FRE ranging between 135 and 2251±30 yr, objectively correlated to DIC contents and alkalinity. Deeper investigations of the relationship between 14C activity of DIC and environmental variables show that the geological substrate is the dominant factor in the 14C reservoir effect, and far more influential than the river flow discharge.

scholarly journals Calibration of Lacustrine Sediment Ages Using the Relationship Between 14C Levels in Lake Waters and in the Atmosphere: The Case of Lake Kinneret

Radiocarbon ◽  
2001 ◽  
Vol 43 (2B) ◽  
pp. 821-830 ◽  
Author(s):  
Mariana Stiller ◽  
Aaron Kaufman ◽  
Israel Carmi ◽  
Genia Mintz
Keyword(s):  
Lake Water ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Lacustrine Sediments ◽  
Lacustrine Sediment ◽  
Lake Kinneret ◽  
The Past ◽  
Organic And Inorganic Carbon ◽  
Lake Waters ◽  
The Relationship

The source of endogenic organic and inorganic carbon in lacustrine sediments is the dissolved inorganic carbon (DIC) in the lake water. The relation between the radiocarbon levels of DIC in Lake Kinneret and of CO2 in the atmosphere has been investigated. The ratio of the former to the latter was found to be 0.814 ± 0.013. This ratio is used for calibrating the age of the sediment according to the natural fluctuations in the atmospheric levels of 14C that occurred during the past 10,000 years.

scholarly journals Major Effects of Alkalinity on the Relationship Between Metabolism and Dissolved Inorganic Carbon Dynamics in Lakes

Ecosystems ◽  
2020 ◽  
Vol 23 (8) ◽  
pp. 1566-1580 ◽  
Author(s):  
Hares Khan ◽  
Alo Laas ◽  
Rafael Marcé ◽  
Biel Obrador
Keyword(s):  
High Frequency ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Singular Spectrum Analysis ◽  
Automatic Monitoring ◽  
Carbon Dynamics ◽  
Metabolic Changes ◽  
Calcite Precipitation ◽  
Wide Range ◽  
The Relationship

AbstractSeveral findings suggest that CO2 emissions in lakes are not always directly linked to changes in metabolism but can be associated with interactions with the dissolved inorganic carbon equilibrium. Alkalinity has been described as a determining factor in regulating the relative contributions of biological and inorganic processes to carbon dynamics in lakes. Here we analyzed the relationship between metabolic changes in dissolved oxygen (DO) and dissolved inorganic carbon (DIC) at different timescales in eight lakes covering a wide range in alkalinity. We used high-frequency data from automatic monitoring stations to explore the sensitivity of DIC to metabolic changes inferred from oxygen. To overcome the problem of noisy data, commonly found in high-frequency measurements datasets, we used Singular Spectrum Analysis to enhance the diel signal-to-noise ratio. Our results suggest that in most of the studied lakes, a large part of the measured variability in DO and DIC reflects non-metabolic processes. Furthermore, at low alkalinity, DIC dynamics appear to be mostly driven by aquatic metabolism, but this relationship weakens with increasing alkalinity. The observed deviations from the metabolic 1:1 stoichiometry between DO and DIC were strongly correlated with the deviations expected to occur from calcite precipitation, with a stronger correlation when accounting also for the benthic contribution of calcite precipitation. This highlights the role of calcite precipitation as an important driver of CO2 supersaturation in lakes with alkalinity above 1 meq L−1, which represents 57% of the global area of lakes and reservoirs around the world.

scholarly journals Photosynthetic Adaptation by Synechococcus leopoliensis in Response to Exogenous Dissolved Inorganic Carbon

1986 ◽  
Vol 80 (4) ◽  
pp. 1038-1040 ◽  
Author(s):  
William P. Mayo ◽  
Timothy G. Williams ◽  
Douglas G. Birch ◽  
David H. Turpin
Keyword(s):  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Synechococcus Leopoliensis ◽  
Photosynthetic Adaptation
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