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Effect of tree mixtures and water availability on belowground complementarity of fine roots of birch and pine planted on sandy podzol

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorALTINALMAZIS-KONDYLIS, Andreas
hal.structure.identifierGeorg-August-University = Georg-August-Universität Göttingen
dc.contributor.authorMUESSIG, Kathina
hal.structure.identifierUnité expérimentale Forêt Pierroton [UEFP]
dc.contributor.authorMEREDIEU, Céline
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Hervé
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorAUGUSTO, Laurent
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorFANIN, Nicolas
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBAKKER, Mark
dc.date.issued2020-12
dc.identifier.issn0032-079X
dc.description.abstractEnAims We investigated whether tree species growing in mixtures and under different water supply would segregate their fine roots vertically, produce more fine roots overall, or only in specific soil layers.Methods We examined the biomass, morphology, and distribution of fine roots down to 90 cm (forest floor, 0-5, 5-15, 15-30, 30-60, 60-90 cm) in pure and mixed stands of 10-year-old birch and pine trees, planted on a sandy podzol with discontinuous hardpan and seasonal high water table, following a randomized block design with four blocks receiving irrigation and four blocks left unirrigated during summer.Results Our results did not show any vertical root segregation between birch and pine in mixed plots. None of the species overyielded belowground throughout, but pine developed more roots in the top soil layer under irrigation. Both species had shallower fine root distributions in wet conditions, especially birch that was more plastic than pine in response to irrigation.Conclusions Both species followed similar ecological strategies, occupying and competing for the same layers of the soil profile, under both control and irrigated conditions. However, the greater allocation of pine roots at the top soil horizons under irrigated conditions suggests locally favourable niches can lead to depth-specific asymmetric competition. This sheds new light on vertical niche partitioning of young tree mixtures under varying environmental conditions.
dc.description.sponsorshipDiversité et Productivité des forêTs impactées par le Changement Climatique - ANR-16-CE32-0003
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enVertical fine root distribution
dc.subject.enFine root biomass
dc.subject.enFine root morphology
dc.subject.enBelowground overyielding
dc.subject.enMixed-species plantations
dc.subject.enSummer irrigation
dc.title.enEffect of tree mixtures and water availability on belowground complementarity of fine roots of birch and pine planted on sandy podzol
dc.typeArticle de revue
dc.identifier.doi10.1007/s11104-020-04741-8
dc.subject.halSciences de l'environnement
bordeaux.journalPlant and Soil
bordeaux.page437-455
bordeaux.volume457
bordeaux.issue1-2
bordeaux.peerReviewedoui
hal.identifierhal-03035070
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03035070v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20and%20Soil&rft.date=2020-12&rft.volume=457&rft.issue=1-2&rft.spage=437-455&rft.epage=437-455&rft.eissn=0032-079X&rft.issn=0032-079X&rft.au=ALTINALMAZIS-KONDYLIS,%20Andreas&MUESSIG,%20Kathina&MEREDIEU,%20C%C3%A9line&JACTEL,%20Herv%C3%A9&AUGUSTO,%20Laurent&rft.genre=article


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