Millimetre scale aeration of the rhizosphere and drilosphere

Simple item page
dc.date.accessioned2022-09-07T12:38:49Z
dc.date.available2022-09-07T12:38:49Z
dc.date.issued2022-06-22
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.description.sponsorshipDeutsche Forschungsgemeinschaft. Grant Number: DFG PAK888
dc.identifierdoi:10.17170/kobra-202207126458
dc.identifier.urihttp://hdl.handle.net/123456789/14133
dc.language.isoengeng
dc.relation.doidoi:10.1111/ejss.13269
dc.relation.projectidGrant/Award Number: DFG PAK888
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectbioporeeng
dc.subjectearthworm holeeng
dc.subjectpore connectivityeng
dc.subjectroot patheng
dc.subjectX-ray CTeng
dc.subject.ddc550
dc.subject.ddc570
dc.subject.swdPoreger
dc.subject.swdWurzelger
dc.subject.swdRegenwurmger
dc.subject.swdPorositätger
dc.subject.swdPhysikochemische Bodeneigenschaftger
dc.subject.swdRhizosphäreger
dc.subject.swdBildanalyseger
dc.titleMillimetre scale aeration of the rhizosphere and drilosphereeng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractSoil aeration is a critical factor for oxygen-limited subsoil processes, as transport by diffusion and advection is restricted by the long distance to the free atmosphere. Oxygen transport into the soil matrix is highly dependent on its connectivity to larger pore channels like earthworm and root colonised biopores. Here we hypothesize that the soil matrix around biopores represents different connectivity depending on biopore genesis and actual coloniser. We analysed the soil pore system of undisturbed soil core samples around biopores generated or colonised by roots and earthworms and compared them with the pore system of soil, not in the immediacy of a biopore. Oxygen partial pressure profiles and gas relative diffusion was measured in the rhizosphere and drilosphere from the biopore wall into the bulk soil with microelectrodes. The measurements were linked with structural features such as porosity and connectivity obtained from X-ray tomography and image analysis. Aeration was enhanced in the soil matrix surrounding biopores in comparison to the bulk soil, shown by higher oxygen concentrations and higher relative diffusion coefficients. Biopores colonised by roots presented more connected lateral pores than earthworm colonised ones, which resulted in enhanced aeration of the rhizosphere compared to the drilosphere. This has influenced biotic processes (microbial turnover/mineralization or root respiration) at biopore interfaces and highlights the importance of microstructural features for soil processes and their dependency on the biopore's coloniser.eng
dcterms.accessRightsopen access
dcterms.creatorUteau, Daniel
dcterms.creatorHorn, Rainer
dcterms.creatorPeth, Stephan
dcterms.source.articlenumbere13269
dcterms.source.identifiereissn:1365-2389
dcterms.source.issueIssue 4
dcterms.source.journalEuropean Journal of Soil Science (EJSS)eng
dcterms.source.volumeVolume 73
kup.iskupfalse

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
European_J_Soil_Science_2022_Uteau_Millimetre_scale_aeration_of_the_rhizosphere_and_drilosphere.pdf
Size:
1.64 MB
Format:
Adobe Portable Document Format
Description:
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
3.03 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Artikel