Assessing hydrologic and biogeochemical controls on pore-water dissolved inorganic carbon cycling in a subterranean estuary: A 14C and 13C mass balance approach

2011 ◽  
Vol 127 (1-4) ◽  
pp. 76-89 ◽  
Author(s):  
Amanda Dorsett ◽  
Jennifer Cherrier ◽  
Jonathan B. Martin ◽  
Jaye E. Cable
Keyword(s):  
Mass Balance ◽  
Carbon Cycling ◽  
Pore Water ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Subterranean Estuary ◽  
Balance Approach ◽  
Mass Balance Approach

scholarly journals Particulate organic carbon (POC) in relation to other pore water carbon fractions in drained and rewetted fens in Southern Germany

2008 ◽  
Vol 5 (6) ◽  
pp. 1615-1623 ◽  
Author(s):  
S. Fiedler ◽  
B. S. Höll ◽  
A. Freibauer ◽  
K. Stahr ◽  
M. Drösler ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Particulate Organic Carbon ◽  
Pore Water ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Relative Importance ◽  
Pore Waters ◽  
Calcareous Fens ◽  
Essential Components ◽  
The Individual

Abstract. Numerous studies have dealt with carbon (C) contents in Histosols, but there are no studies quantifying the relative importance of the individual C components in pore waters. For this study, measurements were taken of all the carbon components (particulate organic carbon, POC; dissolved organic carbon, DOC; dissolved inorganic carbon, DIC; dissolved methane, CH4) in the soil pore water of calcareous fens under three different water management regimes (re-wetted, deeply and moderately drained). Pore water was collected weekly or biweekly (April 2004 to April 2006) at depths between 10 and 150 cm. The main results obtained were: (1) DIC (94–280 mg C l−1) was the main C-component. (2) POC and DOC concentrations in the pore water (14–125 mg C l−1 vs. 41–95 mg C l−1) were pari passu. (3) Dissolved CH4 was the smallest C component (0.005–0.9 mg C l−1). Interestingly, about 30% of the POM particles were colonized by microbes indicating that they are active in the internal C turnover. Certainly, both POC and DOC fractions are essential components of the C budget of peatlands. Furthermore, dissolved CO2 in all forms of DIC appears to be an important part of peatland C-balance.

Whole-basin, mass-balance approach for identifying critical phosphorus-loading thresholds in shallow lakes

2014 ◽  
Vol 51 (4) ◽  
pp. 515-528 ◽  
Author(s):  
William F. Kenney ◽  
Thomas J. Whitmore ◽  
David G. Buck ◽  
Mark Brenner ◽  
Jason H. Curtis ◽  
...  
Keyword(s):  
Mass Balance ◽  
Shallow Lakes ◽  
Phosphorus Loading ◽  
Balance Approach ◽  
Mass Balance Approach
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