Universität Bonn

INRES Pflanzenbau

Dr. Thomas Gaiser


Avatar Gaiser

Thomas Gaiser


Katzenburgweg 5

53115 Bonn

+49 228 73-2050

My research focusses on the interactions between crop, soil and atmosphere and how these interactions are influenced by climate change or changes in crop and soil management. I am guiding the development of the SIMPLACE framework (simplace.net), which combines simulation components into process-based, dynamic simulation solutions, from the scientifc side. In addition, I am interested in uncertainties related to soil and climate information when crop simulation models are applied at larger scales.

DAKIS: Digital Agricultural Knowledge and Information System (DAKIS) Innovative integration for landscape smart agriculture
DETECT: Regional Climate Change: The Role of Land Use and Water Management (CRC 1502)
SUSCAP: Developing resilience and tolerance of crop resource use efficiency to climate change and air pollution
UPSCALERS: Upscaling Site-Specific Climate-smart Agriculture and Land use practices to Enhance Regional production Systems in West Africa
New spatial field arrangements for sustainable agriculture: exploring crop diversification at landscape scale by considering soil heterogeneities (PhenoRob CP5.2 - New Field Arrangements )
The Soil-Root Zone: Soil Dynamics and impacts of potential interventions (PhenoRob CP 3.5)
Soil^3 – Sustainable Subsoil Management
Agricultural Model Intercomparison and Improvement Project (AgMIP)
Long-term fertilization experiment for field crops at Dikopshof

For a full list of peer-reviewed publications please go to my ORCID account.

For a full list of all publications please go to Google Scholar

Habib ur Rahman, M.,Hüging, H., Raza,A. , Ahrends, H. and Gaiser , T. 2021. Impact of in-field soil heterogeneity on biomass and yield of winter triticale in an intensively cropped hummocky landscape under temperate climate conditions. Precision Agriculture  (2021) https://doi.org/10.1007/s11119-021-09868-x

 Nafi, E., Webber, H., Danso, I., Naab, J.B., Frei, M., Gaiser, T., 2021. Can reduced tillage buffer the future climate warming effects on maize yield in different soil types of West Africa? Soil and Tillage Research 205, 104767. https://doi.org/10.1016/j.still.2020.104767

Mouratiadou, I., Stella, T., Gaiser, T., Wicke, B., Nendel, C., Ewert, F., van der Hilst, F., 2020. Sustainable intensification of crop residue exploitation for bioenergy: Opportunities and challenges. GCB Bioenergy 12, 71-89. https://doi.org/10.1111/gcbb.12649

Tewes, A., Hoffmann, H., Krauss, G., Schafer, F., Kerkhoff, C., Gaiser, T., 2020. New Approaches for the Assimilation of LAI Measurements into a Crop Model Ensemble to Improve Wheat Biomass Estimations. Agronomy-Basel 10, 21. https://doi.org/10.3390/agronomy10030446

Tewes, A., Hoffmann, H., Nolte, M., Krauss, G., Schäfer, F., Kerkhoff, C., Gaiser, T., 2020. How Do Methods Assimilating Sentinel-2-Derived LAI Combined with Two Different Sources of Soil Input Data Affect the Crop Model-Based Estimation of Wheat Biomass at Sub-Field Level? Remote Sensing 12, 925. https://doi.org/10.3390/rs12060925

Kuhn, T., Enders, A., Gaiser, T., Schäfer, D., Srivastava, A.K., Britz, W.,  (2019): Coupling crop and bio-economic farm modelling to evaluate the revised fertilization regulations in Germany. Agricultural Systems, doi:10.1016/j.agsy.2019.102687.

Maharjan, G.R., H. Hoffmann, H. Webber, A.K. Srivastava, L. Weihermüller, A. Villa, E. Coucheny, E. Lewan, G. Trombi, M. Moriondo, M. Bindi, B. Grosz, R. Dechow, M. Kuhnert, L. Dohro, K.C. Kersebaum, T. Stella, X. Specka, C. Nendel, J. Constantin, H. Raynak, F. Ewert, T. Gaiser, 2019. Effects of input data aggregation on simulated crop yields in temperate and Mediterranean climates. European Journal of Agronomy 103, 32-46. https://doi.org/10.1016/j.eja.2018.11.001.

Stella, T., Mouratiadou, I., Gaiser, T., Berg-Mohnicke, M., Wallor, E., Ewert, F., Nendel, C., 2019. Estimating the contribution of crop residues to soil organic carbon conservation. Environmental Research Letters 14, 12.

Webber, H., Ewert, F., Olesen, J.E., Muller, C., Fronzek, S., Ruane, A.C., Bourgault, M., Martre, P., Ababaei, B., Bindi, M., Ferrise, R., Finger, R., Fodor, N., Gabaldon-Leal, C., Gaiser, T., Jabloun, M., Kersebaum, K.C., Lizaso, J.I., Lorite, I.J., Manceau, L., Moriondo, M., Nendel, C., Rodriguez, A., Ruiz-Ramos, M., Semenov, M.A., Siebert, S., Stella, T., Stratonovitch, P., Trombi, G., Wallach, D., 2018. Diverging importance of drought stress for maize and winter wheat in Europe. Nature Communications 9, 10.

Ahrends, H.E., Eugster, W., Gaiser, T., Rueda-Ayala, V., Huging, H., Ewert, F., Siebert, S., 2018. Genetic yield gains of winter wheat in Germany over more than 100 years (1895-2007) under contrasting fertilizer applications. Environmental Research Letters 13, 11.

Faye, B., H. Webber, J. Naab, D.S. MacCarthy, M. Adam, F. Ewert, J.P. Lamers, C.-F. Schleussner, A.C. Ruane, U. Gessner, G. Hoogenboom, K. Boote, V. Shelia, F. Saeed, D. Wisser, S. Hadir, P. Laux, T. Gaiser, 2018. Impacts of 1.5 versus 2.0° C on cereal yields in the West African Sudan Savanna. Environmental Research Letters 13. DOI: 10.1088/1748-9326/aaab40.

Faye, B., H. Webber, M. Diop, M. Mbaye, Owusu-Sekyere, J.D., Naab, J.B., T. Gaiser, 2018. Potential impact of climate change on peanut yield in Senegal, West Africa. Field Crops Research 219, 148-159. DOI: 10.1016/j.fcr.2018.01.034.

Tao, F.L., R.P. Rötter, T. Palosuo, C.G.H. Diaz-Ambrona, M.I. Minguez, M.A. Semenov, K.C. Kersebaum, C. Nendel, D. Cammarano, H. Hoffmann, F. Ewert, A. Dambreville, P. Martre, L. Rodriguez, M. Ruiz-Ramos, T. Gaiser, J.G. Hohn, T. Salo, R. Ferrise, M. Bindi, A.H. Schulman, 2017. Designing future barley ideotypes using a crop model ensemble. European Journal of Agronomy 82, 144-162. DOI:10.1016/j.eja.2016.10.012.

Gabaldón-Leal, C., H. Webber, M.E. Otegui, G.A. Slafer, R.A. Ordóñez, T. Gaiser, I.J. Lorite, M. Ruiz-Ramos, F. Ewert, 2016. Modelling the impact of heat stress on maize yield formation. Field Crops Research 198, 226-237. DOI:10.1016/j.fcr.2016.08.013.

Folberth, C., H. Yang, T. Gaiser, K. C. Abbaspour, and R. Schulin. 2013. Modeling maize yield responses to improvement in nutrient, water and cultivar inputs in sub-Saharan Africa. Agricultural Systems 119:22-34.

Gaiser, T. Perkons, U., Küpper, P.M., Kautz, T., Uteau-Puschmann, D., Ewert, F., Enders, A., Krauss, G. (2013): Modeling biopore effects on root growth and biomass production on soils with pronounced sub-soil clay accumulation. Ecol. Model. 256:6-15.

Srivastava, A., Gaiser , T., Ewert, F., Cornet, D. (2012): Estimation of effective fallow availability for the prediction of yam productivity at the regional scale using multiple scenario analysis. Field Crops Research 131, 32-39.

Gaiser, T., Judex, M., Igue, A.M., Paeth, H., Hiepe, C. (2011): Future productivity of fallow systems in Sub-Saharan Africa: Is the effect of demographic pressure and fallow reduction more significant than climate change? Agricultural and Forest Meteorology, 151:1120-1130 (DOI: 10.1016/j.agrformet.2011.03.015).

For a full list of peer-reviewe publicatzions pleas go to my ORCID account.

Einführung in den Pflanzenbau
Spezieller Pflanzenbau
Crop and Ecosystem Analysis and Modelling
Resource Conservation
Climate Change and Agriculture
GIS - Basic concepts and applications
Data Processing and Visualisation
Research in Cropping Systems

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