Relationship between DOC concentration and vadose zone thickness and depth below water table in groundwater of Cape Cod, U.S.A.

@article{Pabich2001RelationshipBD,
  title={Relationship between DOC concentration and vadose zone thickness and depth below water table in groundwater of Cape Cod, U.S.A.},
  author={Wendy J. Pabich and Ivan Valiela and Harold F. Hemond},
  journal={Biogeochemistry},
  year={2001},
  volume={55},
  pages={247-268}
}
Changes in concentration ofdissolved organic carbon (DOC) reflectbiogeochemical processes that determinechemical composition of groundwater and othernatural waters. We found that the deeper thevadose zone, the lower the concentration of DOCin groundwater near the water table, indicatingthat considerable attenuation ofsurface-derived DOC occurred in the vadosezone. Under vadose zones <1.25 m, DOCconcentrations at the surface of the watertable ranged to >20 mg C l−1, while forvadose zones >5.0 m… 
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References

SHOWING 1-10 OF 49 REFERENCES
Denitrification of anthropogenic nitrogen in groundwater : measurement and modeling using stable isotopic and mass balance approaches
Denitrification is a microaerophilic, microbially-mediated process, by which nitrate is reduced to biologically-unavailable N2 gas; the reaction is generally coupled to the oxidation of organic
The hyporheic zone as a source of dissolved organic carbon and carbon gases to a temperate forested stream
The objective of this study was to examine chemical changes in porewaters that occur over small scales (cm) as groundwater flows through the hyporheic zone and discharges to a stream in a temperate
Export of DOC from forested catchments on the Precambrian Shield of Central Ontario: Clues from 13C and 14C
Export of dissolved organic carbon (DOC) from forested catchmentsis governed by competing processes of production, decomposition, sorptionand flushing. To examine the sources of DOC, carbon isotopes
Subsurface denitrification in a forest riparianzone: Interactions between hydrology and supplies ofnitrate and organic carbon
The influence of hydrology andpatterns of supply of electron donors and acceptors onsubsurface denitrification was studied in a forestriparian zone along the Boyne River in southernOntario that
Groundwater-surface water relationships in boreal forest watersheds: dissolved organic carbon and inorganic nutrient dynamics
TLDR
Groundwater is a source of DOC and nitrogen in these systems and nutrients introduced through groundwater seepage are rapidly utilized via oxidative, biotic processes within the hyporheal zone or at the sediment–water interface.
Seasonal biogeochemical patterns in surface water, subsurface hyporheic, and riparian ground water in a temperate stream ecosystem
TLDR
Groundwater-surface water interaction within a hyporheic zone forms a complex system structured not only by hydrologic forces but also by seasonal changes in temperature and discharge, which indicates potential cumulative groundwater discharge effects through successive hyportheic zones over stream distance.
Dissolved organic carbon fractions in soil and stream water during variable hydrological conditions at Birkenes, southern Norway.
Spatial and temporal variations in the composition of dissolved organic carbon (DOC) in stream and soil water of the acidified Birkenes catchment were studied during summer and autumn 1990.
Dissolved Organic Carbon Cycling in Forested Watersheds: A Carbon Isotope Approach
Dissolved organic carbon (DOC) is important in the acid-base chemistry of acid-sensitive freshwater systems; in the complexation, mobility, persistence, and toxicity of metals and other pollutants;
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