Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Salt marsh establishment and eco-engineering effects in dynamic estuaries determined by species growth and mortality
Brückner, M.Z.M.; Schwarz, C.; van Dijk, W.M.; van Oorschot, M.; Douma, H.; Kleinhans, M.G. (2019). Salt marsh establishment and eco-engineering effects in dynamic estuaries determined by species growth and mortality. JGR: Earth Surface 124(12): 2962-2986. https://dx.doi.org/10.1029/2019JF005092
In: Journal of Geophysical Research-Earth Surface. AMER GEOPHYSICAL UNION: Washington. ISSN 2169-9003; e-ISSN 2169-9011, meer
|   |
| Trefwoorden |
Marien/Kust; Brak water; Zoet water |
| Author keywords |
salt marsh; dynamic vegetation modeling; estuarine morphology;eco-engineering effects |
| Auteurs | | Top |
- Brückner, M.Z.M.
- Schwarz, C., meer
- van Dijk, W.M.
|
- van Oorschot, M.
- Douma, H.
- Kleinhans, M.G., meer
|
|
| Abstract |
Growth conditions and eco-engineering effects of vegetation on local conditions in coastal environments have been extensively studied. However, interactions between salt marsh settling, growth, and mortality as a function of hydromorphology and eco-engineering lack sufficient understanding to forecast morphological development of dynamic systems. We predict salt marsh establishment with an ecomorphodynamic model that accounts for literature-based seasonal settling and life-stage-dependent growth and mortality of a generic salt marsh species. The model was coupled to a calibrated hydromorphodynamic model of an intertidal bar and, on a coarser grid, to the entire Western Scheldt estuary. To quantify the importance of eco-engineering effects we compared the dynamic model results to a static model approach. The ecomorphodynamic model reproduces spatial pattern, cover, and growth trends over 15 years. The modeled vegetation cover emerges from the combination of a positive and a new negative eco-engineering effect: vegetation reduces tidal flow strength facilitating plant survival while the developing salt marsh increases the hydroperiod, which limits large-scale marsh expansion. The reproduced spatial gradient in vegetation density by our model is strongly correlated to their life-stages, which underlines the importance of age-dependence when modeling vegetation and for predictions of the stability of the marsh. Upscaling of the model to the entire estuary on a coarser grid gives implications for grid size-dependent modeling of hydrodynamics and vegetation. In comparison with static model results, the eco-engineering effects reduce vegetation cover, showing the importance of vegetation dynamics for predictions of salt marsh growth. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
