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Call for participation: Collaborative benchmarking of functional-structural root architecture models. The case of root water uptake

Andrea Schnepf, Christopher K. Black, Valentin Couvreur, Benjamin M. Delory, Claude Doussan, Axelle Koch, Timo Koch, Mathieu Javaux, Magdalena Landl, Daniel Leitner, View ORCID ProfileGuillaume Lobet, Trung Hieu Mai, Félicien Meunier, Lukas Petrich, Johannes A. Postma, Eckart Priesack, Volker Schmidt, Jan Vanderborght, Harry Vereecken, Matthias Weber
doi: https://doi.org/10.1101/808972
Andrea Schnepf
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
14International Soil Modelling Consortium ISMC, Jülich, Germany
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  • For correspondence: a.schnepf@fz-juelich.de
Christopher K. Black
2Department of Plant Science, The Pennsylvania State University, 102 Tyson Building, University Park PA 16802, USA
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Valentin Couvreur
3Earth and Life Institute, Agronomy, Université catholique de Louvain, Louvain-la-Neuve, Belgium
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Benjamin M. Delory
4Institute of Ecology, Leuphana University Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany
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Claude Doussan
5UMR 1114 EMMAH, INRA/UAPV, 84914, Avignon cedex 9, France
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Axelle Koch
6Earth and Life Institute, Environmental Sciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
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Timo Koch
7Department of Hydromechanics and Modelling of Hydrosystems, University of Stuttgart, Pfaffenwaldring 61, 70569 Stuttgart, Germany
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Mathieu Javaux
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
3Earth and Life Institute, Agronomy, Université catholique de Louvain, Louvain-la-Neuve, Belgium
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Magdalena Landl
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
14International Soil Modelling Consortium ISMC, Jülich, Germany
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Daniel Leitner
8Simulationswerkstatt, Ortmayrstrasse 20, A-4060 Leonding, Austria
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Guillaume Lobet
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
14International Soil Modelling Consortium ISMC, Jülich, Germany
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  • ORCID record for Guillaume Lobet
Trung Hieu Mai
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
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Félicien Meunier
9CAVElab - Computational and Applied Vegetation Ecology, Ghent University, Ghent, Belgium
10Department of Earth and Environment, Boston University, Boston, USA
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Lukas Petrich
11Institute of Stochastics, Ulm University, Helmholtzstr. 18, D-89069 Ulm, Germany
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Johannes A. Postma
12Institut für Bio- und Geowissenschaften: Plant Sciences (IBG-2), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
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Eckart Priesack
13Institute of Soil Ecology, Helmholtz Zentrum München, Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
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Volker Schmidt
11Institute of Stochastics, Ulm University, Helmholtzstr. 18, D-89069 Ulm, Germany
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Jan Vanderborght
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
14International Soil Modelling Consortium ISMC, Jülich, Germany
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Harry Vereecken
1Institut für Bio- und Geowissenschaften: Agrosphäre (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Str., D-52425 Jülich, Germany
14International Soil Modelling Consortium ISMC, Jülich, Germany
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Matthias Weber
11Institute of Stochastics, Ulm University, Helmholtzstr. 18, D-89069 Ulm, Germany
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Abstract

Three-dimensional models of root growth, architecture and function are becoming important tools that aid the design of agricultural management schemes and the selection of beneficial root traits. However, while benchmarking is common in many disciplines that use numerical models such as natural and engineering sciences, functional-structural root architecture models have never been systematically compared. The following reasons might induce disagreement between the simulation results of different models: different representation of root growth, sink term of root water and solute uptake and representation of the rhizosphere. Presently, the extent of discrepancies is unknown, and a framework for quantitatively comparing functional-structural root architecture models is required. We propose, in a first step, to define benchmarking scenarios that test individual components of complex models: root architecture, water flow in soil and water flow in roots. While the latter two will focus mainly on comparing numerical aspects, the root architectural models have to be compared at a conceptual level as they generally differ in process representation. Therefore defining common inputs that allow recreating reference root systems in all models will be a key challenge. In a second step, benchmarking scenarios for the coupled problems are defined. We expect that the results of step 1 will enable us to better interpret differences found in step 2. This benchmarking will result in a better understanding of the different models and contribute towards improving them. Improved models will allow us to simulate various scenarios with greater confidence and avoid bugs, numerical errors or conceptual misunderstandings. This work will set a standard for future model development.

Footnotes

  • https://github.com/RSA-benchmarks/collaborative-comparison

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Call for participation: Collaborative benchmarking of functional-structural root architecture models. The case of root water uptake
Andrea Schnepf, Christopher K. Black, Valentin Couvreur, Benjamin M. Delory, Claude Doussan, Axelle Koch, Timo Koch, Mathieu Javaux, Magdalena Landl, Daniel Leitner, Guillaume Lobet, Trung Hieu Mai, Félicien Meunier, Lukas Petrich, Johannes A. Postma, Eckart Priesack, Volker Schmidt, Jan Vanderborght, Harry Vereecken, Matthias Weber
bioRxiv 808972; doi: https://doi.org/10.1101/808972
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Call for participation: Collaborative benchmarking of functional-structural root architecture models. The case of root water uptake
Andrea Schnepf, Christopher K. Black, Valentin Couvreur, Benjamin M. Delory, Claude Doussan, Axelle Koch, Timo Koch, Mathieu Javaux, Magdalena Landl, Daniel Leitner, Guillaume Lobet, Trung Hieu Mai, Félicien Meunier, Lukas Petrich, Johannes A. Postma, Eckart Priesack, Volker Schmidt, Jan Vanderborght, Harry Vereecken, Matthias Weber
bioRxiv 808972; doi: https://doi.org/10.1101/808972

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