Quantitative, trait-based microbial ecology to accurately model the impacts of nitrogen deposition on soil carbon cycling in the Anthropocene (Final Technical Report)
Atmospheric nitrogen pollution has altered fundamental soil processes, challenging our understanding of the extent to which soils will continue to sequester carbon and slow the pace of future environmental change. While most evidence shows that increases in soil nitrogen have enhanced carbon storage in temperate forests, it remains unclear whether these effects will persist as nitrogen pollution continues to decline. Moreover, there remains uncertainty as to why some forests gain more carbon in response to nitrogen pollution than others. At the heart of this knowledge gap is a failure to link nitrogen–induced shifts in microbial biodiversity with gains or losses in their functional ability to decompose, assimilate, and ultimately stabilize soil carbon. Given that this uncertainty impedes the ability of predictive models to project future soil carbon stocks, there is a critical need to determine how key microbial traits drive soil carbon responses to nitrogen pollution. As such the goals of this project were to: (1) Quantify variation in taxon–specific and community–level microbial traits across gradients in microbial community composition, mycorrhizal symbioses, and nitrogen availability. (2) Integrate empirical data into a novel predictive framework that enhances our ability to project the regional soil carbon consequences of historical nitrogen pollution in temperate forests.
- Research Organization:
- West Virginia Univ., Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER). Earth & Environmental Systems Science (EESS)
- DOE Contract Number:
- SC0019472
- OSTI ID:
- 2221797
- Report Number(s):
- Final Report: DOE-WVU-0019472
- Resource Relation:
- Related Information: Piñeiro J, Dang CD, Walkup J, Kuzniar T, Winslett R, Blazewicz S, Freedman ZB, Brzostek E, Morrissey EM (In Press) Data from Pineiro et al., Shifts in bacterial traits under chronic Nitrogen deposition align with soil processes in arbuscular, but not ectomycorrhizal-associated trees. Global Change Biology The data supporting this study is available in Dryad: doi:10.5061/dryad.dncjsxm5j. The sequence data is publicly available in the National Center for Biotechnology Information Sequence Read Archive accession number PRJNA995554. Code associated with qSIP calculations is available at https://bitbucket.org/QuantitativeSIP/qsip_repo.Raczka N ; Pineiro J ; Tfaily M ; Chu R ; Lipton M ; Pasa-Tolic L ; Morrissey E ; Brzostek E (2021): Data from Raczka et al., Interactions between microbial diversity and substrate chemistry determine the fate of carbon in soil, from Elizabeth Woods in Morgantown, West Virginia, USA. Quantitative, trait-based microbial ecology to accurately model the impacts of nitrogen deposition on soil carbon cycling in the Anthropocene, ESS-DIVE repository. Dataset. doi:10.15485/1829502
- Country of Publication:
- United States
- Language:
- English
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