How do lichens affect our climate? To improve the modeling, we analyze the geometric structure in 3D images.

Analysis of Lichen

Lichen form an essential part of the biomass on earth and contribute considerably to the gas exchange. In order to better model their influence on the climate, it is crucial to improve understanding of the diffusion processes on the micro scale.

The complex microstructure of cryptogames can be imaged spatially using high resolution synchrotron micro-computed tomography. Subsequently, the microstructures can be described exactly and compared using quantitative 3D image analysis. The high variability of the biological microstructures and the huge amount of data to be analysed pose particular challenges.

First results are documented in the diploma thesis "Analyse und Modellierung biologischer Mikrostrukturen mittels 3D-Mikrotomographien" ("Analysis and Modelling of Biological Microstructures with 3D-Microtomography") by Sonja Heizenreder (Biology Faculty).

Cladonia
© Photo Dr. Alexander Rack, European Synchrotron Radiation Facility

Cladonia

Frullania
© Photo Dr. Alexander Rack, European Synchrotron Radiation Facility

Frullania

Usnea
© Photo Dr. Alexander Rack, European Synchrotron Radiation Facility

Usnea

Images

  • Samples: Sonja Heizenreder
  • Images and Visualizations: Dr. Alexander Rack, European Synchrotron Radiation Facility