Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.ecolmodel.2020.108973
Document accepted manuscript
Title (Primary) The MANgrove–GroundwAter feedback model (MANGA) – Describing belowground competition based on first principles
Author Bathmann, J.; Peters, R.; Naumov, D.; Fischer, T.; Berger, U.; Walther, M.
Journal Ecological Modelling
Year 2020
Department ENVINF
Volume 420
Page From art. 108973
Language englisch
Keywords Mangroves; Groundwater; Vegetation; Subsurface; Coupling; Mechanistic; Plant-soil feedback; Belowground competition
Abstract It is commonly accepted that the processes determining how plant-groundwater interactions influence vegetation patterns depend on subsurface properties, including groundwater availability, but not much is known about the underlying processes. We present a hybrid process-based simulation system to study the feedback between vegetation and subsurface hydrodynamics using mangroves as an example. Our approach relies on first principles rather than on empirical competition concepts. We develop a modular tool which dynamically couples an agent-based vegetation model to a continuum groundwater model. The vegetation model describes individual trees and their interactions within their environment and communities. We show the dependence of the salinity distribution on aquifer properties within stylized case studies. Moreover, the model predicts varying tree allometries depending on variations of subsurface properties. Finally, we analyze the nature of belowground competition for fresh water as a direct consequence of the plant-soil feedback that is inherent to the modelling approach. The results show that the interaction of vegetation and subsurface hydrodynamics is crucial for vegetation zonation patterning in form of a pronounced distribution of tree allometry. We also discuss the benefits and disadvantages of our presented plant-soil feedback modelling approach, as well as its implications for future research.
Persistent UFZ Identifier
Bathmann, J., Peters, R., Naumov, D., Fischer, T., Berger, U., Walther, M. (2020):
The MANgrove–GroundwAter feedback model (MANGA) – Describing belowground competition based on first principles
Ecol. Model. 420 , art. 108973