Data from: Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere

Smercina, Darian; Evans, Sarah E.; Friesen, Maren L.; Tiemann, Lisa K.

doi:10.5061/dryad.931zcrjm3

Title: Data from: Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere

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Abstract

Here we present data associated with the manuscript, Temporal dyanmics of free-living nitrogen fixation in the switchgrass rhizosphere. Free-living nitrogen fixation (FLNF) represents an important terrestrial N source and is gaining interest for its potential to contribute plant available N to bioenergy cropping systems. Switchgrass, a cellulosic bioenergy crop, may be reliant on FLNF when particularly when grown on low N marginal lands. These potential contributions of FLNF to switchgrass and the controls on this process are not well understood. We evaluated drivers of FLNF rates and N-fixing microbial community composition in field-grown switchgrass systems over two years with high temporal sampling. We found climate variables to be strong drivers of FLNF in switchgrass systems, compared to other environmental and biological factors including soil nutrients and N-fixing microbial community composition. Increased soil moisture availability tended to promote FLNF, but extreme rainfall events appeared to be detrimental. These climate-related responses suggest FLNF-derived N contributions may be reduced under projected climate shifts. We also found a significant, but weak correlation between N-fixing microbial community composition and FLNF rates including an observed shift in community composition between 2017 and 2018 and a similarly significant difference in FLNF rates between years. Lastly, we foundmore »« less

Authors:

;

Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Michigan State University
Michigan State Univ., East Lansing, MI (United States)
Washington State Univ., Pullman, WA (United States)

Publication Date:: Thu Oct 14 00:00:00 EDT 2021

DOE Contract Number:: SC0014108; SC0018409

Research Org.:: Michigan State Univ., East Lansing, MI (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

Subject:: 09 BIOMASS FUELS

OSTI Identifier:: 1871695

DOI:: https://doi.org/10.5061/dryad.931zcrjm3

Citation Formats


                    Smercina, Darian, Evans, Sarah E., Friesen, Maren L., and Tiemann, Lisa K. Data from: Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere.  United States: N. p., 2021. 
        Web.  doi:10.5061/dryad.931zcrjm3.

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                    Smercina, Darian, Evans, Sarah E., Friesen, Maren L., & Tiemann, Lisa K. Data from: Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere.  United States.  doi:https://doi.org/10.5061/dryad.931zcrjm3

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                    Smercina, Darian, Evans, Sarah E., Friesen, Maren L., and Tiemann, Lisa K. 2021.  
"Data from: Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere".  United States.  doi:https://doi.org/10.5061/dryad.931zcrjm3.  https://www.osti.gov/servlets/purl/1871695. Pub date:Thu Oct 14 00:00:00 EDT 2021

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@article{osti_1871695,

  title        = {Data from: Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere},

  author       = {Smercina, Darian and Evans, Sarah E. and Friesen, Maren L. and Tiemann, Lisa K.},

  abstractNote = {Here we present data associated with the manuscript, Temporal dyanmics of free-living nitrogen fixation in the switchgrass rhizosphere. Free-living nitrogen fixation (FLNF) represents an important terrestrial N source and is gaining interest for its potential to contribute plant available N to bioenergy cropping systems. Switchgrass, a cellulosic bioenergy crop, may be reliant on FLNF when particularly when grown on low N marginal lands. These potential contributions of FLNF to switchgrass and the controls on this process are not well understood. We evaluated drivers of FLNF rates and N-fixing microbial community composition in field-grown switchgrass systems over two years with high temporal sampling. We found climate variables to be strong drivers of FLNF in switchgrass systems, compared to other environmental and biological factors including soil nutrients and N-fixing microbial community composition. Increased soil moisture availability tended to promote FLNF, but extreme rainfall events appeared to be detrimental. These climate-related responses suggest FLNF-derived N contributions may be reduced under projected climate shifts. We also found a significant, but weak correlation between N-fixing microbial community composition and FLNF rates including an observed shift in community composition between 2017 and 2018 and a similarly significant difference in FLNF rates between years. Lastly, we found that seasonal FLNF N contributions, based on measurement with high temporal resolution, may meet up to 80% of switchgrass N demands.},

  doi          = {10.5061/dryad.931zcrjm3},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Oct 14 00:00:00 EDT 2021},

  month        = {Thu Oct 14 00:00:00 EDT 2021}

}

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DOI: https://doi.org/10.5061/dryad.931zcrjm3

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Temporal dynamics of free‐living nitrogen fixation in the switchgrass rhizosphere

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Abstract Free‐living nitrogen fixation (FLNF) represents an important terrestrial N source and is gaining interest for its potential to contribute plant available N to bioenergy cropping systems. Switchgrass, a cellulosic bioenergy crop, may be particularly reliant on FLNF when grown on low N systems, like marginal lands. However, the potential contributions of FLNF to switchgrass as well as the controls on this process are not well understood. In this study, we evaluated drivers of FLNF rates and N‐fixing microbial (diazotrophic) community composition in field‐grown switchgrass systems over two growing seasons with high temporal sampling. We found that climate variables aremore »« less
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Free-living nitrogen fixation (FLNF) represents an important terrestrial N source and is gaining interest for its potential to contribute plant available N to bioenergy cropping systems. Switchgrass, a cellulosic bioenergy crop, may be particularly reliant on FLNF when grown on low N systems, like marginal lands. However, the potential contributions of FLNF to switchgrass as well as the controls on this process are not well-understood. In this study, we evaluated drivers of FLNF rates and N-fixing microbial (diazotrophic) community composition in field-grown switchgrass systems over two growing seasons with high temporal sampling. We found that climate variables are strong driversmore »« less
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