Journal
ADVANCES IN WATER RESOURCES
Volume 39, Issue -, Pages 85-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.advwatres.2011.09.016
Keywords
Flow-vegetation interaction; Laboratory experiment; Riparian vegetation; Biomass selection; Vegetation roots; Fluvial ecomorphology
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Funding
- HYDRALAB III European Framework Program [022441]
- Swiss National Science Foundation [PP00P2-128545/1, 200021-125273/1]
- Swiss National Science Foundation (SNF) [200021_125273] Funding Source: Swiss National Science Foundation (SNF)
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Several research investigations have explored the interaction between morphodynamic and vegetation growth processes from both the modelling and the experimental viewpoints. Results have mainly been concerned with morphologic analyses of the effects of vegetation on long term riverbed evolution without addressing the relative role of the timescales between such processes. This paper presents for the first time the statistics of uprooted biomass obtained while perturbing the vegetation growing in the river bed with periodic disturbances of constant magnitude. That is, we force the biological and hydrological processes to interact and study the related timescales in order to shed light on the role of flood disturbances in selecting the component of the biomass that has a higher chance of survival in relation to its growth stage. A simple interpretative stochastic model is then presented and thoroughly discussed in a companion paper (Biomass selection by floods and related timescales: Part 2. Stochastic modelling). (C) 2011 Elsevier Ltd. All rights reserved.
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