The effect of long-term CO2 enrichment on carbon and nitrogen content of roots and soil of natural pastureland

dc.contributor.author Al-Traboulsi, Manal
dc.contributor.author Wilsey, Brian
dc.contributor.author Wilsey, Brian
dc.contributor.author Potvin, Catherine
dc.contributor.department Ecology, Evolution and Organismal Biology
dc.date 2021-08-11T19:36:11.000
dc.date.accessioned 2021-08-14T04:49:03Z
dc.date.available 2021-08-14T04:49:03Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2021
dc.date.issued 2021-01-01
dc.description.abstract <p>Increasing levels of atmospheric CO2 may change C and N dynamics in pasture ecosystems. The present study was conducted to examine the impact of four years of CO2 enrichment on soil and root composition and soil N transformation in natural pastureland. Plots of open-top growth chambers were continuously injected with ambient CO2 (350 µL L–1) and elevated CO2 (625 µL L–1). Soil cores exposed to ambient and elevated CO2 treatment were incubated and collected each year. Net N-mineralization rates in soil (NH4+-N plus NO3ˉ–-N), in addition to total C and N content (%) of soil and root tissues were measured. Results revealed that elevated CO2 caused a significant reduction in soil NO3 (P < 0.05), however, no significant CO2 effect was found on total soil C and N content (%). Roots of plants grown under elevated CO2 treatment had higher C/N ratios. Changes in root C/N ratios were driven by changes in root N concentrations as total root N content (%) was significantly reduced by 30% (P < 0.05). Overall, findings suggest that the effects of CO2 enrichment was more noticeable on N content (%) than C content (%) of soil and roots; elevated CO2 significantly affected soil N-mineralization and total N content (%) in roots, however, no substantial change was found in C inputs in CO2-enriched soil.</p>
dc.description.comments <p>This article is published as Al-Traboulsi, M., Wilsey, B., Potvin, C., 2021. The effect of long-term CO2 enrichment on carbon and nitrogen content of roots and soil of natural pastureland. Folia Oecologica, 48 (2): 180–190. doi:<a href="https://doi.org/10.2478/foecol-2021-0018">10.2478/foecol-2021-0018</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/eeob_ag_pubs/470/
dc.identifier.articleid 1476
dc.identifier.contextkey 24278601
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath eeob_ag_pubs/470
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/azJ4blqv
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/eeob_ag_pubs/470/2021_Wilsey_EffectLong.pdf|||Sat Jan 15 00:25:20 UTC 2022
dc.source.uri 10.2478/foecol-2021-0018
dc.subject.disciplines Ecology and Evolutionary Biology
dc.subject.disciplines Plant Sciences
dc.subject.disciplines Soil Science
dc.subject.keywords CO2 enrichment
dc.subject.keywords C sequestration
dc.subject.keywords pastureland
dc.subject.keywords root C/N
dc.subject.keywords soil C
dc.subject.keywords soil N
dc.title The effect of long-term CO2 enrichment on carbon and nitrogen content of roots and soil of natural pastureland
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 8c9719e8-92a4-4db1-bdf5-8e387ef59e2d
relation.isOrgUnitOfPublication 6fa4d3a0-d4c9-4940-945f-9e5923aed691
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