Weaving different forms of knowledge of managed aquifer recharge in a Saharan oasis (Algeria)

Saidani Mohamed Amine, Leduc Christian, Baudron Paul, Kuper Marcel. 2024. Weaving different forms of knowledge of managed aquifer recharge in a Saharan oasis (Algeria). Journal of Hydrology, 642:131895, 11 p.

https://doi.org/10.1016/j.jhydrol.2024.131895

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Géographie-Aménagement-Urbanisme-Architecture

Résumé : This paper demonstrates the reciprocal benefits of a socio-hydrology approach that fosters fruitful exchanges between different 'knowers' of complex water dynamics in weaving different types of knowledge. For centuries, the managed aquifer recharge and use system in the Beni Isguen oasis in Algeria was diligently monitored by communal water stewards and the data meticulously recorded and stored. Throughout our research project on the origin of groundwater and its replenishment, intense dialogue between scientists and communal water stewards greatly enhanced the research protocol based on isotope tracers, while simultaneously contributing to the active knowledge base of the community. The dialogue was based on mutual respect, trust and a reciprocal desire to share knowledge. Our findings revealed increased mineralization of shallow groundwater during drought periods, which was attributed to geological processes, and emphasized the crucial role of floods. Also, contrary to the initial assumption that deep Continental Intercalaire groundwater was only used for drinking, it was identified as a vital external resource, responsible for substantial recharge of the phreatic aquifer of the oasis. This source of water explains the continued use of the phreatic aquifer for irrigation more than 10 years after the last major flood. This collaborative socio-hydrology approach between differently situated 'knowers' contributes to the grounding of socio-hydrology. While respecting the strong water conservation culture, weaving different forms of knowledge may help develop a virtuous and original development model in the Algerian Sahara and beyond.

Mots-clés Agrovoc : gestion des eaux, eau souterraine, conservation de l'eau, oasis, nappe souterraine, aquifère, gestion des connaissances, hydrologie

Mots-clés géographiques Agrovoc : Algérie

Mots-clés libres : Knowledge, Knowledge co-production, Oasis, Irrigation, Algeria

Classification Agris : P10 - Ressources en eau et leur gestion

Champ stratégique Cirad : CTS 5 (2019-) - Territoires

Agences de financement hors UE : Belmont Forum, New Opportunities for Research Funding Agency Cooperation in Europe, International Fund for Agricultural Development, IHE Delft Instituut voor Water Onderwijs

Projets sur financement : (NLD) Transformations to Groundwater Sustainability, (EU) Innovations rurales et eau dans les territoires sud du Maghreb, (NLD) Water-Energy-Food Nexus Toolkit

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