EGU2020-18425
https://doi.org/10.5194/egusphere-egu2020-18425
EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

The transdisciplinary approach on coastal hydrogeosystems: tracing back socioenvironmental trajectories and water policies evolution to improve their management and adaptability

Melanie Erostate1,2, Stephane Ghiotti3, Frederic Huneau1,2, Emilie Garel1,2, and Vanina Pasqualini2
Melanie Erostate et al.
  • 1University of Corsica, Hydrogeology department, Corte, France (melanie.erostate@gmail.com)
  • 2CNRS, UMR 6134, SPE, F-20250 Corte, France
  • 3CNRS, Laboratoire Art-Dev UMR 5281, Université Paul Valéry Montpellier 3, Route de Mende, 34190 Montpellier Cedex 5, France

The Mediterranean coasts are subject to multiple environmental risks (erosion of the coastline, marine submersion, flooding, degradation of water quality) and overdeveloped anthropogenic pressures (urbanization, tourism, agriculture, industry, etc.). These natural and anthropogenic pressures already affect water resources and dependent coastal wetlands. For these coastlines, which are particularly rich in biodiversity, the consequences could get worse in the coming years as a result of climate change. In this context of increasing pressures, understanding the dynamics/trajectories of coastal hydrosystems appears to be the only robust approach allowing the establishment of integrated water resource management and territorial sustainability.  

To this end, this study proposes to demonstrate how the transdisciplinary approach between environmental sciences (hydrology, hydrogeology, hydroecology and geosciences) and human sciences (geography, cartography, history, anthropology) allows the production of a particularly rich common knowledge, which makes it possible to accurately analyze the dynamics and trajectories of coastal hydrosystems. Two coastal hydrosystems have been studied: the Biguglia lagoon (Corsica, France) and l’Etang de l’Or (Hérault, France), through a detailed analysis of (i) the uses, practices, behavior and state of the coastal hydrosystems (surface and ground waters, lagoon and associated wetlands), (ii) planning and development policies and issues, and (iii) the governance of these spaces. Thanks to this information, it is thus possible to describe and to analyze the evolution of coastal hydrosystems over time. The correlation between the understanding of the hydrodynamic behavior of systems and socio-economic dynamics of land use planning allows the identification of causal links between anthropogenic development and the status of resources. Thanks to this collaborative work, the chronology and identification of resource degradation processes could be traced. By understanding the contemporary issues, the transdisciplinary approach provides new basis for thinking about the anticipation, the adaptation and the sustainable management of coastal hydrosystems.

How to cite: Erostate, M., Ghiotti, S., Huneau, F., Garel, E., and Pasqualini, V.: The transdisciplinary approach on coastal hydrogeosystems: tracing back socioenvironmental trajectories and water policies evolution to improve their management and adaptability, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-18425, https://doi.org/10.5194/egusphere-egu2020-18425, 2020.

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