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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Contribution of rainfall vs. water management to Mediterranean wetland hydrology: Development of an interactive simulation tool to foster adaptation to climate variability
Auteurs :	Gaëtan Lefebvre ; Christophe Germain ; Brigitte Poulin
Publisher :	Environ Modell Soft 74:39-47
Type de document :	Article
Année de publication :	2015
Mots-clés :	TdV ; Camargue ; Zone humide ; zone méditerranéenne ; Changement climatique ; Hydrologie ; Modèle ; Gestion eau ; Niveau eau
Mots-clés:	Decision-aid tool, Hydrology modelling, Mediterranean marsh, Mar-O-Sel, Phragmites australis, Water level monitoring, Wetland management SOUTHERN FRANCE, SPARTINA-ALTERNIFLORA, PHRAGMITES-AUSTRALIS, ADAPTIVE MANAGEMENT, RHONE DELTA, CAMARGUE, GROWTH, LAKES, VEGETATION, COMMUNITY
Résumé :	Mediterranean wetlands are increasingly managed to maintain their functions and services following modification in water allocation, embankment and climate change, calling for proactive and adaptive water management. In a first step, we used long-term monitoring of water levels in 37 adjacent embanked marshes in the Camargue as a repeated non-controlled experiment to build a hydrological model. Without information on water input/output by marsh users, we could nevertheless estimate evapotranspiration under flooding and dry conditions, and soil water coefficient. The model provided a high predictive accuracy (adjusted R-2 = 0.73-0.83) of monthly water levels when applied to an independent sample of 12 marshes. In a second step we developed an interactive decision-aid tool that allows users to visualize the impact of their management strategy (desired water level at a specific month) on subsequent water levels, and their consequence on different components of the ecosystem over a 10-yr period. (C) 2015 Elsevier Ltd. All rights reserved.

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