The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.
Consistent effects of nitrogen amendments on soil microbial communities and processes across biomes
Abstract
Ecosystems worldwide are receiving increasing amounts of reactive nitrogen (N) via anthropogenic activities with the added N having potentially important impacts on microbially mediated belowground carbon dynamics. However, a comprehensive understanding of how elevated N availability affects soil microbial processes and community dynamics remains incomplete. The mechanisms responsible for the observed responses are poorly resolved and we do not know if soil microbial communities respond in a similar manner across ecosystems. We collected 28 soils from a broad range of ecosystems in N orth A merica, amended soils with inorganic N, and incubated the soils under controlled conditions for 1 year. Consistent across nearly all soils, N addition decreased microbial respiration rates, with an average decrease of 11% over the year‐long incubation, and decreased microbial biomass by 35%. High‐throughput pyrosequencing showed that N addition consistently altered bacterial community composition, increasing the relative abundance of A ctinobacteria and F irmicutes, and decreasing the relative abundance of A cidobacteria and V errucomicrobia. Further, N‐amended soils consistently had lower activities in a broad suite of extracellular enzymes and had decreased temperature sensitivity, suggesting a shift to the preferential decomposition of more labile C pools. The observed trends held across strong gradients in climate and soil characteristics, indicating that the soil microbial responses to N addition are likely controlled by similar wide‐spread mechanisms. Our results support the hypothesis that N addition depresses soil microbial activity by shifting the metabolic capabilities of soil bacterial communities, yielding communities that are less capable of decomposing more recalcitrant soil carbon pools and leading to a potential increase in soil carbon sequestration rates.
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Cited by
Leff, J. W., Jones, S. E., Prober, S. M., Barberán, A., Borer, E. T., Firn, J. L., Harpole, W. S., Hobbie, S. E., Hofmockel, K. S., Knops, J. M. H., et al. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1508382112 · Cited by 1,452
Self-citationCarbon use efficiency of microbial communities: stoichiometry, methodology and modelling
Sinsabaugh, R. L., Manzoni, S., Moorhead, D. L., & Richter, A. (2013) · Ecology Letters · doi:10.1111/ele.12113 · Cited by 991
Responses of soil bacterial and fungal communities to extreme desiccation and rewetting
Barnard, R. L., Osborne, C. A., & Firestone, M. K. (2013) · The ISME Journal · doi:10.1038/ismej.2013.104 · Cited by 987
Mayer, M., Prescott, C. E., Abaker, W. E. A., Augusto, L., Cécillon, L., Ferreira, G. W. D., James, J., Jandl, R., Katzensteiner, K., Laclau, J.-P., et al. (2020) · Forest Ecology and Management · doi:10.1016/j.foreco.2020.118127 · Cited by 748
Impact of plant domestication on rhizosphere microbiome assembly and functions
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Metadata
- Authors
- Ramirez, K. S., Craine, J. M., & Fierer, N.
- Venue
- Global Change Biology
- Publisher
- Wiley
- Published
- 2012-02-06
- Volume
- 18
- Issue
- 6
- Pages
- 1918-1927
- ISSN
- 1354-1013 (ISSN-L)
- 1365-2486
- OpenAlex
- W2004631178
- Cited by
- 1,245
- References
- 62
- FWCI
- 70.76
- Type
- journal article
- Language
- en
- Open access
- closed
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