Biogeosciences
Biogeosciences
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Articles | Volume 12, issue 16
Articles | Volume 12, issue 16
https://doi.org/10.5194/bg-12-5143-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-12-5143-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 12, issue 16
Research article
 | 
31 Aug 2015
Research article |  | 31 Aug 2015

Environmental forcing does not induce diel or synoptic variation in the carbon isotope content of forest soil respiration

D. R. Bowling, J. E. Egan, S. J. Hall, and D. A. Risk

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Short summary
Soil respiration and its stable isotopes were studied in a subalpine forest. There was strong diel variability in soil efflux but not in the isotope content of soil efflux or CO2 from biological activity in the soil. Following rain, soil efflux increased, but the isotope content of these fluxes did not change. Temporal variation in the isotope content of soil efflux was unrelated to environmental variables. Results confirmed established theory regarding diffusive soil gas transport.
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