hyperspectral

Multiangular estimation of plant chlorophyll concentration (Cab), and canopy leaf area index (LAI) using radiative transfer modeling.

Current processing software of aerial imagery removes the potential for multi-angular observations. Therefore, it is neither possible to correct for directional influences of incoming and outgoing light nor to use the observations from multiple angles as an additional information source for the retrieval of biophysical plant parameters. We are currently studying the potential of UAV-retrieved multi-angular reflectance data for the estimation of LAI and Cab by inversion of the SCOPE (SoilCanopy Observation, Photochemistry and Energy fluxes) model.

Multiscale Remote Sensing of Plant Pathogens

Developing a proof-of-concept for myrtle rust (Austropuccinia psidii) detection withing the scope of my PhD thesis.

The Effect of Epidermal Structures on Leaf Spectral Signatures of Ice Plants (Aizoaceae)

Epidermal structures (ES) of leaves are known to affect the functional properties and spectral responses. Spectral studies focused mostly on the effect of hairs or wax layers only. We studied a wider range of different ES and their impact on spectral properties. Additionally, we identified spectral regions that allow distinguishing different ES. We used a field spectrometer to measure ex situ leaf spectral responses from 350 nm–2500 nm. A spectral library for 25 species of the succulent family Aizoaceae was assembled.