River ecomorphodynamics; Roots growth; Dynamic flow releases; Non-traditional water uses; Laboratory experiments; Stability analysis
Baerenbold F., Crouzy B., Perona P. (2016), Stability analysis of ecomorphodynamic equations, in WATER RESOURCES RESEARCH
, 52(2), 1070-1088.
Crouzy B., Wuethrich D., Perona P., D'Odorico P. (2014), Ecomorphodynamic conditions for the emergence of river anabranching patterns, in RIVER FLOW 2014
, LausanneBalkema, Lausanne.
Crouzy B., Bärenbold F, D'Odorico P., Perona P., Ecomorphodynamic approaches to river anabranching patterns, in Advances in Water Resources
Edmaier Katharina, Crouzy Benoît, Perona Paolo, Experimental characterization of vegetation uprooting by flow, in Journal of Geophysical Research
Razurel Pierre, Gorla Lorenzo, Crouzy Benoît, Perona Paolo, Non-proportional Repartition Rules Optimize Environmental Flows and Energy Production, in Water Resources Management
Mueller Tom, Ranquet-Bouleau Clemence, Perona Paolo, Optimizing drip irrigation for eggplant using evolving thresholds, in Agricultural Water Management
Tron S., Perona P., Gorla L., Schwarz M., Laio F., Ridolfi L., The signature of randomness in riparian plant root distributions, in Geophys. Res. Letts.
River ecomorphological processes depend on the flow regime, which can be strongly modified with respect to the natural one by water impoundment; in turn, this induces medium-long term biodiversity changes. Developing engineered dynamic flow releases is considered a major research challenge, precisely because such releases should ideally guarantee the economic efficiency of water uses without straining the environment (Perona et al., 2013). To the purpose, engineering dynamic streamflows requires understanding ecomoprhological processes, and viceversa.REMEDY, as acronym for River Eco-Morphological processes and Engineered DYnamic streamflows, is an ambitious multidisciplinary research project. Yet, it is characterized by three conceptually interconnected Tasks, which propose new intriguing scientific research themes. Beyond tackling basic research questions, this research project blends both theoretical and experimental investigations, which are also complementary to those already successfully carried out within the currently ending project ADAMANT. As a first Task, we propose to extend our studies on the bio-economy of flow diversions (Gorla and Perona, 2013) to dammed systems, for which the problem involves the optimization of stochastic differential equations. Yet, we will develop new ecohydrological indicators able to take the hydrodynamic variability caused by the flow regime and the river morphology into account. Although some analytical steps can be advanced as far as the dynamics of storage systems is concerned, this task will essentially be investigated numerically.As a second Task, analytical linear stability analysis of the both 1-Dymensional and 2-Dimensional equations of morphodynamics, modified in order to account for the presence of growing vegetation will be performed. The 1-D case will be applied to validate data concerning vegetation establishment conditions in convectively accelerated streams. The 2-D case will be applied to study the emergence of river anabranching. The third Task will be almost entirely experimental, and focussed at understanding whether root growth of pioneering plants (mainly Salix species of the type we investigated in Pasquale et al. (2013)) colonizing alluvial bedforms may occur with preferential directions in order to balance the momentum caused by drag during flooding, and whether directionality is also both hydro- and oxitropism dependent (Pasquale et al., 2012).REMEDY will last two years, and does not require additional funding neither for equipment nor for infrastructures, being all the necessary laboratory resources already in place and functioning. Project deliverables will all lead to scientific publications in international journals, while the applied aspects will meet the interest of river managers and stakeholders, as now being happening for the ending project ADAMANT.