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Volume 14, issue 1
Biogeosciences, 14, 241–255, 2017
https://doi.org/10.5194/bg-14-241-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 241–255, 2017
https://doi.org/10.5194/bg-14-241-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 17 Jan 2017

Research article | 17 Jan 2017

Contributions of microbial activity and ash deposition to post-fire nitrogen availability in a pine savanna

Cari D. Ficken and Justin P. Wright

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Cited articles

Aber, J. D., Ollinger, S. V., Driscoll, C. T., Likens, G. E., Holmes, R. T., Freuder, R. J., and Goodale, C. L.: Inorganic nitrogen losses from a forested ecosystem in response to physical, chemical, biotic, and climatic perturbations, Ecosystems, 5, 648–658, https://doi.org/10.1007/s10021-002-0203-8, 2002.
Ames, G. M., Anderson, S. M., and Wright, J. P.: Multiple environmental drivers structure plant traits at the community level in a pryogenic ecosystem, Funct. Ecol., 30, 789–798, https://doi.org/10.1111/1365-2435.12536, 2015.
Appling, A. P. and Heffernan, J. B.: Nutrient Limitation and Physiology Mediate the Fine-Scale (De)coupling of Biogeochemical Cycles, Am. Nat., 184, 384–406, https://doi.org/10.1086/677282, 2014.
Archer, S. K., Allgeier, J. E., Semmens, B. X., Heppell, S. A., Pattengill-Semmens, C. V., Rosemond, A. D., Bush, P. G., McCoy, C. M., Johnson, B. C., and Layman, C. A.: Hot moments in spawning aggregations: implications for ecosystem-scale nutrient cycling, Coral Reefs, 34, 19–23, https://doi.org/10.1007/s00338-014-1208-4, 2014.
Augustine, D. L., Brewer, P., Blumenthal, D. M., Derner, J. D., and Von Fischer, J. C.: Prescribed fire, soil inorganic nitrogen dynamics, and plant respnoses in a semiarid grassland, J. Arid. Environ., 104, 59–66, https://doi.org/10.1016/j.jaridenv.2014.01.022, 2014.
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To evaluate different mechanisms underlying nitrogen (N) pulses that occur following fires in pyrogenic US savannas, we coupled field measures of soil N cycling with soil N isotopic signatures. We found that neither ash deposition nor changes to microbial activity could account for observed N pulse. We hypothesize that changes to plant uptake may contribute to the post-fire N pulses. We encourage future work to explore the role of plant activity on temporal nutrient availability dynamics.
To evaluate different mechanisms underlying nitrogen (N) pulses that occur following fires in...
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