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SUMMARY:ENAC Seminar Series by Dr S. Schlüter
DTSTART:20201103T100000
DTEND:20201103T104500
DTSTAMP:20260506T015639Z
UID:d73b2cff6d0e3ff843988dad64f6957b0dc1027aed8f2d941ddb7b7c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Steffen Schlüter\n10:00 – 10:45 – Dr Steffen Schlüter
 \nSenior researcher and group leader at Helmholtz Centre for Environmental
  Research – UFZ\, Germany\n\nExploring the relationship between soil str
 ucture and soil functions via pore-scale imaging\n\nBiogeochemical and str
 uctural heterogeneities at the pore-scale govern processes in soil in many
  ways. They are therefore of key importance for understanding soil functio
 ning. Prominent examples are the stabilization of soil organic matter due 
 to reduced bioavailability in aggregated soil structure\, preferential tra
 nsport of nutrients and contaminants along macropores\, highly localized g
 reenhouse gas emission around a few hotspots of microbial activity like pa
 rticulate organic matter and the formation of the rhizosphere as a complex
  system composed of plant roots\, soil and associated microorganisms.\nAll
  of these processes have in common that the underlying relevant mechanisms
  are fairly well understood in artificial systems with reduced degrees of 
 heterogeneity\, like soil suspensions\, glass beads\, micromodels with kno
 wn structure and so on. However\, the far more complex pore architecture o
 f undisturbed soils leads to emergent system behavior which needs to be ad
 dressed when studying these structure-mediated processes. Non-invasive ima
 ging techniques can be harnessed to explore how biogeochemical and structu
 ral heterogeneities are shaping soil functions. Such imaging techniques an
 d subsequent image analyses are now widely used to study intact soils. Whi
 le previously many properties were defined only by averaged bulk parameter
 s\, pore-scale imaging reveals details at smaller scales and provides spat
 ial information\, in two\, three or even more dimensions including time or
  multispectral data.\nIn this lecture I will give a short introduction int
 o different mechanisms of carbon sequestration occurring in natural soil\,
  before I show current methodological advances in mapping long-term stabil
 ized carbon in soil. In the second part of the talk I will present experim
 ental findings on the relevance of soil structure and the spatial distribu
 tion of microbial hotspots for greenhouse gas emissions.\n\n\nShort bio:\n
 Steffen Schlüter is a senior researcher at Department of Soil System Scie
 nces at the Helmholtz-Centre for Environmental Research – UFZ in Halle\,
  Germany. Graduating with a master degree in physical geography at the TU 
 Dresden in 2009\, he did his PhD in soil hydrology at the Martin Luther Un
 iversity Halle-Wittenberg (MLU) in 2012 while working at the UFZ under the
  supervision of Prof. Hans-Jörg Vogel. As a Postdoc he has joined differe
 nt labs in the US (Oregon State University)\, Australia (Australian Nation
 al University) and Germany (UFZ & German Center for Neurodegenerative Dise
 ases – DZNE) and turned into an expert in pore scale imaging of porous m
 edia. Since 2018 he leads the group on “Soil Structure and Soil function
 s” at the UFZ. In 2019 he received his habilitation in soil science at t
 he MLU. He has organized several summer schools and had teaching appointme
 nts at different universities across Europe. Currently his main research i
 nterest is the relationship between soil heterogeneity and ecosystem servi
 ces of soil such as plant production\, matter cycling\, carbon sequestrati
 on as well as water filter and storage.\n 
LOCATION:Zoom https://epfl.zoom.us/j/86191222843
STATUS:CONFIRMED
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