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bäume sterben aufrecht stehend

Note. In the following, when I say "we," I mean my working group° at Technische Universität Braunschweig.

Water is crucial for trees to survive and different tree species have developed different strategies of water use. The specifics of these strategies not only affect the stand scale precipitation partitioning and the local water balance but also manifest themselves in the hydrological cycle at the ecosystem scale. The modulation of the hydrological cycle then feedbacks into the structure of the ecosystem. We're interested in developing and applying computational tools to better understand this relation between hydrological processes and trees from stand to catchment scale.

forest ecohydrology

Selected conference contributions:

• Shokrollahi et al. (accepted). Modelling ecohydrological partitioning in a tropical dry forest in Costa Rica, Seminar on Flood Modelling and Environmental Flows, Berlin, Germany.
• Riedel et al. (accepted). Simulating drought-stress of Lower Saxonian forests under climate change using regionalised climate projections, 53rd Annual Meeting of the Ecological Society of Germany, Austria and Switzerland, Freising, Germany.
• Rickert et al. (accepted). Modelling dry-season response of two tree species in a tropical dry forest in Costa Rica, 53rd Annual Meeting of the Ecological Society of Germany, Austria and Switzerland, Freising, Germany.
• Rickert et al. (2024). Modeling tree water stress in a tropical dry forest in Costa Rica, Tag der Hydrologie 2024, Berlin, Germany. doi:10.13140/RG.2.2.27637.38884°

urban ecohydrology

Selected conference contributions:

• Hörmann et al. (2024). Analyse des Baumwasserhaushaltes entlang eines Urbanisierungsgradienten, Tag der Hydrologie 2024, Berlin, Germany.
• Hörmann et al. (2023). Tools for urban tree health observation – How can we optimize stress identification in urban trees? 52nd Annual Meeting of the Ecological Society of Germany, Austria and Switzerland, Leipzig, Germany.
• Gillefalk et al. (2023). Darwinian approaches for the Urban Critical Zone — A case study in the city of Braunschweig, Lower Saxony, Germany, European Geosciences Union General Assembly, Vienna, Austria.
• Riedel et al. (2023). Exploring water stress on urban trees for the period 2012–2021 in the city of Braunschweig, Germany, through numerical simulations. 4th IAHR Young Professionals Congress, online.

richards(on) solver

Selected papers:

• Zhi et al. (2023). A comparison of numerical schemes for the GPU-accelerated simulation of variably-saturated groundwater flow, Environmental Modelling and Software, 171:105900. doi:10.1016/j.envsoft.2023.105900°
• Zhi et al. (2021). A mass-conservative predictor-corrector solution to the 1D Richards equation with adaptive time control, Journal of Hydrology, 52:125809. doi:10.1016/j.jhydrol.2020.125809°
• Özgen-Xian et al. (2021). Hyperbolic reformulation approach to enable efficient simulation of groundwater flow and reactive transport, Environmental Engineering Science, 38, 181-191. doi: doi:10.1089/ees.2020.0363°

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