Archive: The Year 2020

Mesocosm fluorescence experiment started

After intensive preparations this week, today we started, within the frame of a joint FWF-DFG project with Mirco Migliavacca, a mesocosm experiment in which we aim to study the interactive effects of drought and canopy structure on the top-of-canopy sun-induced fluorescence. To this end, Javier Pacheco-Labrador joined with a FLOX-TOGO instrument for SIF measurements across the replicated plots on a planophile (clover) and erectophile (grass) canopy. These episodic measurements will be accompanied by a suite of additional measurements including active chlorophyll fluorescence, environmental conditions, leaf area, leaf angle distribution, leaf ingredients, etc. FormerMSCA fellow in our group, Karolina Sakowska, also joined for the day to help out, exchange data and discuss ongoing works!

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New discussion paper

Peron A., Kaser L., Fitzky A.C., Graus M., Halbwirth H., Greiner J., Wohlfahrt G., Rewald B., Sanden H., Karl T., (2020) Combined effects of ozone and drought stress on the emission of biogenic volatile organic compounds from Quercus robur L. Biogeosciences Discussions, doi: 10.5194/bg-2020-260.

Update new papers

A few papers have been (conditionally) accepted:

Imran H.A., Gianelle D., Rocchini D., Dalponte M., Martin M.P., Sakowska K., Wohlfahrt G., Vescovo L. (2020) VIS-NIR, Red Edge and NIR-Shoulder based Normalized Vegetation Indices response to co-varying grassland leaf and canopy structural traits. Remote Sensing, accepted.

Spielmann F.M., Hammerle A., Kitz F., Gerdel K., Wohlfahrt G. (2020) Seasonal dynamics of the COS and CO2 exchange of a managed temperate grassland. Biogeosciences Discussions, conditionally accepted.

Nelson J., Perez-Priego O., Zhou S., Poyatos R., Zhang Y., Blanken P., Gimeno T., Wohlfahrt G., Desai A., Gioli B., Limousin J.-M., Bonal D., Paul-Limoges E., Scott R., Varlagin A., Fuchs K., Montagnani L., Wolf S., Delpierre N., Berveiller D., Gharun M., Marchesini L., Gianelle D., Šigut L., Mammarella I., Siebicke L., Black T., Knohl A., Hörtnagl L., Magliulo V., Carvalhais N., Migliavacca M., Reichstein M., Jung M. (2020) Ecosystem transpiration and evaporation: insights from three water flux partitioning methods across FLUXNET sites. Global Change Biology, accepted.

Pastorello G., …, Hammerle A., …, Wohlfahrt G., … et al. (2020) The FLUXNET2015 dataset and the ONEFlux processing pipeline for eddy covariance data. Scientific Data, 7, 225, doi: 10.1038/s41597-020-0534-3.

PostDoc position available

We are looking for a PostDoc to work on a project combining active and passive chlorophyll fluorescence and VIS/NIR reflectance measurements with process-based simulation modeling in order to study early stress detection in terrestrial ecosystems – see here for more details. 

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