Thomas Astor - Research Information System | University of Kassel

Dr. Thomas Astor

Research Areas

Research Interest

Estimation of different parameter of grassland science (e.g. bioenergetic potential, biomass) with the help of spectral and laser-based remote sensing techniques Evaluation and estimation of plant diversity in grasslands

Academic background

07/2015 - recent Scientist University of Kassel

05/2015 - PhD degree

10/2010 - 05/2015 PhD studies at Lund University

09/2009 Diploma in Geoecologiy

2004 - 2009 Study of Geoecology at Bayreuth University

Projects as Co-Investigator

08/2016 - 07/2019

Erfassung struktureller und funktionaler Eigenschaften pflanzenbaulicher Anbausysteme mit modernen terrestrischen sowie luft- und raumgestützten Fernerkundungsmethoden

Publications

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2018	Kyere, I., Astor, T., Graß, R., Wachendorf, M., 2018. Multi-temporal Analysis of Agricultural Land cover in Northern Hesse using satellite data., in: Stützel. H., Fricke, A., Francke-Weltmann, L., Gesellschaft für Pflanzenbauwissenschaften e. V. (Hrsg.), From Big Data to Smart Farming. 61. Jahrestagung der Gesellschaft für Pflanzenbauwissenschaften e. V., 25. bis 27. September 2018, Kiel. Liddy Halm, Göttingen, S. 169–170.
2018	Astor, T., Fricke, T., Wachendorf, M., 2018. Multi-temporal estimation of forage biomass in heterogeneous pastures using static and mobile ultrasonic and hyperspectral measurements., in: Horan, B., Hennessy, D., O’Donovan, M. (Hrsg.), Sustainable meat and milk production from grasslands. Proceedings of the 27th General Meeting of the European Grassland Federation. Wageningen Academic Publishers, Wageningen, S. 813–815.
2018	Astor, T., Wachendorf, M., Fricke, T., 2018. Remote sensing as a tool to assess botanical composition, structure, quantity and quality of temperate grasslands. Grass and Forage Science 73, 1–14. https://doi.org/10.1111/gfs.12312
2018	Grüner, E., Astor, T., Graß, R., Wachendorf, M., 2018. Using RGB remote sensing for biomass prediction in temperate grassland. In: Sustainable meat and milk production from grasslands., in: Horan B., H.D. (Hrsg.), Sustainable meat and milk production from grasslands. Proceedings of the 27th General Meeting of the European Grassland Federation. Grassland Science, Irland, S. 848–850.
2017	Astor, T., Fricke, T., Wachendorf, M., 2017. Abschätzung der raumzeitlichen Verteilung von Grünlandbiomasse in einem Weidenmanagementsystem mittels mobiler Ultraschall- und Hyperspektraler Sensoren, in: Kage, H., Sieling, K., Francke-Weltmann, L. (Hrsg.), Anforderungen an den Pflanzenbau in einer sich urbanisierenden Welt. 60. Jahrestagung der Gesellschaft für Pflanzenbauwissenschaften e. V. Liddy Halm, Göttingen, S. 86–87.
2017	Schulze-Brüninghoff, D., Hensgen, F., Astor, T., Wachendorf, M., 2017. Fernerkundliche Abschätzung der Biomasse von Lupinus polyphyllus invadierten Bergmähwiesen im Biosphärenreservat Rhön unter Nutzung eines terrestrischen 3D Lasers, in: Kage, H., Sieling, K., Francke-Weltmann, L. (Hrsg.), 60. Jahrestagung der Gesellschaft für Pflanzenbauwissenschaften e. V. - Anforderungen an den Pflanzenbau in einer sich urbanisierenden Welt. Verlag Liddy Halm, Göttingen, S. 200–201.
2017	Astor, T., Safari, H., Reddersen, B., Fricke, T., Wachendorf, M., 2017. Fusion of Ultrasonic and Spectral Sensor Data for Improving the Estimation of Biomass in Grasslands with Heterogeneous Sward Structure. Remote Sensing 9, 98. https://doi.org/10.3390/rs9010098
2017	Hensgen, F., Astor, T., Wachendorf, M., 2017. Using 3-D laser measurements for biomass estimation in semi-natural grasslands invaded by Lupinus polyphyllus, in: Porqueddu, C., Franca, A., Lombardi, G., Molle, G., Peratoner, G., Hopkins, A. (Hrsg.), Grassland resources for extensive farming systems in marginal lands: major drivers and future scenarios. Istituto Sistema Produzione Animale Ambiente Mediterraneo, Sassari, S. 560–562.
2016	Astor, T., Löfgren, O., Prentice, H.C., Eklundh, L., Hall, K., 2016. Airborne hyperspectral data predict Ellenberg indicator values for nutrient and moisture availability in dry grazed grasslands within a local agricultural landscape. Ecological Indicators 2016, 503–516. https://doi.org/10.1016/j.ecolind.2016.01.049
2016	Safari, H., Fricke, T., Reddersen, B., Astor, T., Wachendorf, M., 2016. Comparing mobile and static assessment of biomass in heterogeneous grassland with a multi-sensor system. Journal of Sensors and Sensor Systems 5, 301–312. https://doi.org/10.5194/jsss-5-301-2016

Lectures

09/2018	Can remote sensing help to examine agricultural intensification in vegetable crop production? Indo-German Conference on Rural-Urban Transitions, Bangalore, Indien
09/2018	Estimating grassland biomass - Potentials and limitations of point cloud analysisFusion of hyperspectral imagery with point cloud information to predict biomass of agricultural crops 10th International Conference on Ecological Informatics, Jena
09/2018
06/2018	The Benefits of Sensors in Grassland Science 1. Workshop of the working group "Sensors in grasslands", Cork Irland
08/2015	Prediction of fine-scale plant diversity in grasslands using airborne hyperspectral measurements.Estimating plant diversity, habitat quality and successional stage of grasslands by means of hyperspectral remote sensing 45th annual conference of the Ecological Society of Germany, Austria and Switzerland
05/2015	Multispectral and hyperspectral remote sensing in grassland. How much can remote sensing contribute to grassland research Seminar series at Swedish Agriculture University (SLU)
05/2014	Berufspraktikum Geoökologie
03/2012	Monitoring fragmented semi-natural grasslands in agricultural landscapes using hyperspectral resolution imagery Lunch Seminar Series
10/2018	Ecological remote sensing of grasslands Arbeitsgruppenseminar des Departments für Nutzplanzenwissenschaften, Abteilung Agrarökologie, Göttingen

Other Research Activities

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2019	Stauden-Lupine im Grünland des Biosphärenreservats Rhön Advising activity
2018	2. Workshop der AG „Fernerkundung in den Pflanzenbauwissenschaften Workshop or training
2018	Erfassung der Obstbaumflächen im Gemeindegebiet Witzenhausen - Feldaufnahme und Einsatz von GIS - Advising activity
2018	Estimation of Forage Quality in Grassland Using UAV-based Hyperspectral Measurements Advising activity
2018	Fernerkundung und GIS Teaching
2018	Multi-Temporal Biomass Estimation of Vegetable Crops Using Unmanned Aerial Vehicles. Poster presentation
2017	1. Workshop der AG „Fernerkundung in den Pflanzenbauwissenschaften Workshop or training
2017	60. Jahrestagung der Gesellschaft für Pflanzenbauwissenschaften 26.- 28. September 2017 Conference or similar event
2017	Fernerkundung und GIS Teaching
2017	LiDAR-based estimation of lupin (Lupinus polyphyllus) biomass in grasslands Advising activity