Soil Spaces 2021
Spatial distribution of chemical, physical and biological properties and processes in soils on the nano to centimeter scale
Online-Workshop 25/26 March 2021,
University of Bayreuth
Soil development and soil functions are often determined by the small-scale distribution of soil properties an processes. Commissions I, II and VII of the German Soil Science Society therefore invite you to a workshop aimed to postdocs and advanced doctoral students.
Programme:
| Thursday, 25 March 2021 |
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| from 10 am | Welcome with virtual coffee |
| 11 am |
Tomografic recording of spatial structures of the pore and root system(Steffen Schlüter) Abstract: Nach kurzer Einführung in die Funktionsweise von Röntgen-CT beschäftigt sich der Hauptteil des Vortrags mit der Bildverarbeitung von drei-dimensionalen Daten. Es werden typische Arbeitsschritte vom Filtern, über Segmentierung bis zur Analyse von morphologischen Eigenschaften von Porensystemen und Wurzelarchitekturen untersucht. Dabei stehenden praktische Tipps und Software-Empfehlungen im Vordergrund. Der zweite Teil des Vortrags ist der korrelativen Bildgebung gewidmet. Hier werden die Potenziale und Herausforderungen bei der Verschneidung von Bilddaten unterschiedlicher Dimensionalität (2D-3D), Auflösung (nm-µm) und Informationsgehalt vorgestellt. |
| 12 pm | Break |
| 12:10 pm | Atomic Force Microscopy (AFM) (Karin Eusterhues) |
| 1:10 pm | Lunch Break und break-out-groups (13.10-13.40 Uhr) |
| 2:10 pm | Raman Microscopy (Sören Thiele-Bruhn) |
| 3:10 pm | Break |
| 3:20 pm |
X-ray photoelectron spectroscopy (XPS)) (Robert Mikutta) Abstract: The lecture introduces the basic principles of X-ray photoelectron spectroscopy (XPS) to obtain chemical information about soil surfaces. The presentation will allow to understand and interpret XP spectra and examples for using the XPS technique in environmental research will be discussed. |
| 4:20 pm | Break |
| 4:30 pm |
X-ray absorption spectroscopy (XAS) (Christian Mikutta) Abstract: The lecture will introduce X-ray absorption spectroscopy (XAS) as a versatile tool to investigate the local structure of elements in soil and to quantify species (binding forms) of a particular element. The presentation clarifies the fundamentals of XAS and elaborates the principles of XAS data analysis. |
| 5:30 pm | Final discussion and discussion in break-out-groups (5:30-6 pm) |
| 6:00 pm | Virtual Beergarden, BYB & Brezel! |
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Friday, 26 March 2021 |
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| 8:30 am |
Laser ablation isotope ratio monitoring (LA-IRMS) (Eva Lehndorff) Abstract: Laser ablation isotope ratio mass spectrometry allows analyses of stable C isotope composition in intact soil samples on the micro-meter scale. How this can be used for calculation of C mean residence time in root-soil transects and soil aggregates will be introduced here. |
| 9:30 am | Break |
| 9:40 am | Nano-secondary ion mass spectroscopy (Carsten Müller) |
| 10:40 am | Break |
| 10:50 am |
Soil zymography: overview of method development and problems mitigation (Evgenia Blagodatskaya) Abstract: Soil zymography, i.e., a visualization of enzymatic activity at the root – soil interfaces is intensively developing during past decade. In the first part of the talk, an overview of method elaboration from gel and membrane zymography of hydrolytic enzymes to oxidative and non-membrane micro-zymography will be presented by Evgenia Blagodatskaya with special focus on the diffusion-related problems and their solution by time-lapse zymography. In the second part of the talk, a tool for image analysis will be demonstrated by Sebastian Löppmann and Jan Tegtmeier. |
| 11:50 am | Coffee break and break-out-groups (11.50 am -12.20 pm) |
| 12:30 pm | Discussion with possibility of presentations of participants on projects and ideas, summary |
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from 1:30 pm |
Closing discussion, individual agreements on further cooperations |