Morris, E. K. ; Morris, D. J. P. ; Vogt, S. ; Gleber, S.-C. ; Bigalke, Moritz ; Wilcke, W. ; Rillig, M. C. (2019)
Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi.
In: The ISME Journal, 13 (7)
doi: 10.1038/s41396-019-0369-0
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Stable soils provide valuable ecosystem services and mechanical soil stability is enhanced by the presence of arbuscular mycorrhizal fungi (AMF). Soil aggregation, which is the major driver of mechanical soil stability, is often treated as a static phenomenon, even though aggregate turnover is continually ongoing. In fact, some breakdown of macroaggregates is necessary to allow new aggregate formation and inclusion of new organic matter into microaggregates. We determined how aggregate turnover times were affected by AMF by tracking movement of rare earth elements (REE), applied as their immobile oxides, between aggregate size classes, and using X-ray fluorescence microscopy to spatially localize REEs in a sample of aggregates. Here we show that AMF increased large macroaggregate formation and slowed down disintegration of large and small macroaggregates. Microaggregate turnover was increased in the presence of AMF. Internal aggregate organization suggested that although formation of microaggregates by accretion of soil to particulate organic matter is common, it is not the only mechanism in operation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Morris, E. K. ; Morris, D. J. P. ; Vogt, S. ; Gleber, S.-C. ; Bigalke, Moritz ; Wilcke, W. ; Rillig, M. C. |
| Art des Eintrags: | Bibliographie |
| Titel: | Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi |
| Sprache: | Englisch |
| Publikationsjahr: | 2019 |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | The ISME Journal |
| Jahrgang/Volume einer Zeitschrift: | 13 |
| (Heft-)Nummer: | 7 |
| DOI: | 10.1038/s41396-019-0369-0 |
| Kurzbeschreibung (Abstract): | Stable soils provide valuable ecosystem services and mechanical soil stability is enhanced by the presence of arbuscular mycorrhizal fungi (AMF). Soil aggregation, which is the major driver of mechanical soil stability, is often treated as a static phenomenon, even though aggregate turnover is continually ongoing. In fact, some breakdown of macroaggregates is necessary to allow new aggregate formation and inclusion of new organic matter into microaggregates. We determined how aggregate turnover times were affected by AMF by tracking movement of rare earth elements (REE), applied as their immobile oxides, between aggregate size classes, and using X-ray fluorescence microscopy to spatially localize REEs in a sample of aggregates. Here we show that AMF increased large macroaggregate formation and slowed down disintegration of large and small macroaggregates. Microaggregate turnover was increased in the presence of AMF. Internal aggregate organization suggested that although formation of microaggregates by accretion of soil to particulate organic matter is common, it is not the only mechanism in operation. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Geowissenschaften > Fachgebiet Bodenmineralogie und Bodenchemie |
| Hinterlegungsdatum: | 08 Dez 2022 11:39 |
| Letzte Änderung: | 09 Dez 2022 09:29 |
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