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Adaptation of soil micro-food web to elemental limitation: evidence from the forest-steppe ecotone

hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorLI, Bing
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorLI, Yingbin
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorFANIN, Nicolas
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorHAN, Xu
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorDU, Xiaofang
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorLIU, Hanwen
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorLI, Yuhui
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorLI, Qi
dc.date.accessioned2024-04-08T11:46:39Z
dc.date.available2024-04-08T11:46:39Z
dc.date.issued2022-07
dc.identifier.issn0038-0717
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195242
dc.description.abstractEnStoichiometric imbalance between resources and their decomposers can alter the activity and structure of soil microbial communities and play an important role in regulating nutrient and carbon cycling in terrestrial ecosystems. However, whether and how ecological networks of soil micro-food web change to cope with the stoichiometric imbalance has never been assessed so far. In this study, we tested how the soil micro-food web responded to elemental limitations along a forest-steppe ecotone. We measured several adaptation mechanisms including soil microbial stoichiometry, enzyme activities and the composition of soil microbial and nematode communities. The microbial investment in resource acquisition shifted from nutrient-to C-acquiring enzymes with decreasing soil C:N:P ratios along the forest-steppe ecotone. The shifts in element use efficiencies could be a compensatory way besides enzyme allocation, implemented by microbial communities to cope with stoichiometric imbalance in their substrates. The community structure of soil micro-food web also changed with a decrease in saprotrophic fungi and fungivorous nematodes from the steppe plots towards the forest plots. The cooccurrence networks were less complex and stable with decreasing soil C:N:P ratios, suggesting that trophic interactions were less diverse and C-limitation plays an important role in structuring ecological interactions in soil food webs. Our findings provide insights into how stoichiometric constraints may induce shifts in ecological networks and have important implications for integrating shifts in individual physiological metabolism as well as changes in community composition of soil biota and to better understand and predict soil biogeochemical cycling in terrestrial ecosystems.
dc.language.isoen
dc.publisherElsevier
dc.subject.enStoichiometric imbalance
dc.subject.enMicrobial elemental limitation
dc.subject.enAdaptation mechanism
dc.subject.enSoil micro-food web
dc.subject.enEcological network
dc.subject.enForest-steppe ecotone
dc.title.enAdaptation of soil micro-food web to elemental limitation: evidence from the forest-steppe ecotone
dc.typeArticle de revue
dc.identifier.doi10.1016/j.soilbio.2022.108698
dc.subject.halSciences de l'environnement
bordeaux.journalSoil Biology and Biochemistry
bordeaux.volume170
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03750308
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03750308v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Soil%20Biology%20and%20Biochemistry&rft.date=2022-07&rft.volume=170&rft.eissn=0038-0717&rft.issn=0038-0717&rft.au=LI,%20Bing&LI,%20Yingbin&FANIN,%20Nicolas&HAN,%20Xu&DU,%20Xiaofang&rft.genre=article


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