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dc.contributor.authorWang, Jun-Jian
dc.contributor.authorBowden, Richard D.
dc.contributor.authorLajtha, Kate
dc.contributor.authorWashko, Susan E.
dc.contributor.authorWurzbacher, Sarah
dc.contributor.authorMyrna, Simpson
dc.date.accessioned2019-02-12T20:36:41Z
dc.date.available2019-02-12T20:36:41Z
dc.date.issued2019-01-01
dc.identifier.citationWang, JJ., Bowden, R.D., Lajtha, K. et al. Biogeochemistry (2019) 142: 299. https://doi.org/10.1007/s10533-018-00535-4en_US
dc.identifier.issn1573-515X
dc.identifier.issn0168-2563
dc.identifier.urihttp://hdl.handle.net/10456/47912
dc.description.abstractForest soil organic carbon (SOC) is one of the largest reservoirs of terrestrial carbon (C) and is a major component of the global C cycle. Yet there is still uncertainty regarding how ecosystems, and the SOC they store, will respond to changes due to anthropogenic processes. Current and future reactive nitrogen (N) deposition to forest soils may alter biogeochemical processes and shift both the quantity and quality of stored SOC. We studied SOC storage and molecular-level composition after 22 years of N additions (100 kg N ha−1 y−1) in a temperate deciduous forest. SOC storage in surface soils increased by 0.93 kg m−2 due to a decline in microbial biomass (phospholipid fatty acids) and litter decomposition. N additions resulted in the selective preservation of a range of plant-derived compounds including steroids, lignin-derived, cutin-derived, and suberin-derived compounds that have anti-microbial properties or are non-preferred microbial substrates. This overall shift in SOC composition suggests limited sustainability and a decline in soil health. The reduction in microbial biomass and increase in specific SOC components demonstrate that long-term N fertilization negatively alters fundamental C cycling in forest soils. This study also demonstrates unequivocally that anthropogenic impacts on C and N cycling in forests at the molecular-level must be considered more holistically.en_US
dc.language.isoen_USen_US
dc.publisherSpringer Verlagen_US
dc.relation.ispartofBiogeochemistryen_US
dc.relation.isversionofhttps://link.springer.com/article/10.1007%2Fs10533-018-00535-4en_US
dc.rights© Springer Nature Switzerland AG 2019en_US
dc.subjectForest soilen_US
dc.subjectCarbon storageen_US
dc.subjectCarbon biogeochemistryen_US
dc.subjectPhospholipid fatty acidsen_US
dc.subjectOrganic matter biomarkersen_US
dc.subjectLigninen_US
dc.subjectCutinen_US
dc.subjectSuberinen_US
dc.subjectForest soilsen_US
dc.titleLong-term nitrogen addition suppresses microbial degradation, enhances soil carbon storage, and alters the molecular composition of soil organic matteren_US
dc.description.versionPublished articleen_US
dc.contributor.departmentEnvironmental Science / Studiesen_US
dc.citation.volume142en_US
dc.citation.issue2en_US
dc.citation.spage299en_US
dc.citation.epage313en_US
dc.identifier.doi10.1007/s10533-018-00535-4
dc.contributor.avlauthorBowden, Richard D.


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