Dernière mise à jour le : 20 septembre 2015

Does the bocage of Brittany (f) mitigate floods ? From scientific controversies to public debate

DESCRIPTION

In a context of sustainable and integrated flood management, it is tempting to favor small actions in the hillslopes and non-structural measures over large hydraulic structures – which may have severe impact on the river ecosystems. However, according to the scientific literature, the effect on flood of actions in the hillslopes (land-use modification, small storage facilities…) is difficult to assess, and their efficiency on flood mitigation varies according to the physical context - which explains contradictory results in different studies. Yet, many authors agree that the mitigation effect dwindles with distance and flood severity. This communication deals with the gap between expectations and scientific results, focusing on the case of bocage, in Brittany, and discusses its causes and the ways to bridge it. Bocage is a landscape where agricultural plots are delineated by hedges. The expected role of hedges on floods is often invoked to protect and promote this threatened traditional landscape, and some people even claim that for flood mitigation hedges are preferable to structures built in rivers . So, the first question addressed here is how to write a synthesis focusing on hedgerows, but also for whom it should be written, and through which medium. But it soon appeared that the main issue is to bridge the persisting gap between scientific and technical professionals on one side, and local inhabitants and associations on the other side.

NOTICE BIBLIOGRAPHIQUE DETAILLÉE

keyboard_arrow_right Titre : Does the bocage of Brittany (f) mitigate floods ? From scientific controversies to public debate
keyboard_arrow_right Type de documentation : Actes de colloque/congrès
keyboard_arrow_right Auteur(s) personne(s) : Grimault, L. , Achard, A.L. , Armani, G. , Le Henaff, G. , Poulard, C.
keyboard_arrow_right Date de publication : 20 septembre 2015
keyboard_arrow_right Editeur(s) : UNESCO
keyboard_arrow_right Tags thématiques : crue, transfert de l'information, bocage
keyboard_arrow_right Mots-clés libres : BOCAGE/CRUE/CONCERTATION/TRANSFERT DE CONNAISSANCES/MITIGATION DES RISQUES/HIGH WATER/CONSULTATION/KNOWLEDGE TRANSFER/FLOOD MITIGATION/HILLSLOPE/MULTIOBJECTIVE STRATEGY
keyboard_arrow_right Langue : Anglais
keyboard_arrow_right N° d'édition (ISBN,DOI...) : PUB00045240
keyboard_arrow_right Collection : International Conference on Ecohydrology

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