Articles | Volume 16, issue 19
Biogeosciences, 16, 3911–3928, 2019
https://doi.org/10.5194/bg-16-3911-2019
Biogeosciences, 16, 3911–3928, 2019
https://doi.org/10.5194/bg-16-3911-2019

Research article 10 Oct 2019

Research article | 10 Oct 2019

Spatial gradients in the characteristics of soil-carbon fractions are associated with abiotic features but not microbial communities

Aditi Sengupta et al.

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Cited articles

Ardón, M., Helton, A. M., and Bernhardt, E. S.: Drought and saltwater incursion synergistically reduce dissolved organic carbon export from coastal freshwater wetlands, Biogeochemistry, 127, 411–426, https://doi.org/10.1007/s10533-016-0189-5, 2016. 
Ardón, M., Helton, A. M., and Bernhardt, E. S.: Salinity effects on greenhouse gas emissions from wetland soils are contingent upon hydrologic setting: a microcosm experiment, Biogeochemistry, 140, 217–232, https://doi.org/10.1007/s10533-018-0486-2, 2018. 
Aronesty, E.: Comparison of sequencing utility programs, Open Bioinformatics Journal, 7, 1–8, 2013. 
Bailey, V. L., Smith, A. P., Tfaily, M., Fansler, S. J., and Bond-Lamberty, B.: Differences in soluble organic carbon chemistry in pore waters sampled from different pore size domains, Soil Biol. Biochem., 107, 133–143, https://doi.org/10.1016/J.SOILBIO.2016.11.025, 2017. 
Barry, S. C., Bianchi, T. S., Shields, M. R., Hutchings, J. A., Jacoby, C. A., and Frazer, T. K.: Characterizing blue carbon stocks in Thalassia testudinum meadows subjected to different phosphorus supplies: A lignin biomarker approach, Limnol. Oceanogr., 63, 2630–2646, https://doi.org/10.1002/lno.10965, 2018. 
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Coastal terrestrial–aquatic interfaces represent dynamic yet poorly understood zones of biogeochemical cycles. We evaluated associations between the soil salinity gradient, molecular-level soil-C chemistry, and microbial community assembly processes in a coastal watershed on the Olympic Peninsula in Washington, USA. Results revealed salinity-driven gradients in molecular-level C chemistry, with little evidence of an association between C chemistry and microbial community assembly processes.
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