Case study:Camargue’s former saltworks: Difference between revisions

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Revision as of 16:13, 17 October 2019

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Location: 43° 25' 2.33" N, 4° 37' 55.88" E
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Project overview

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Status In progress
Project web site http://www.conservatoire-du-littoral.fr/siteLittoral/483/28-etangs-et-marais-des-salins-de-camargue-13_bouches-du-rhone.htm
Themes Environmental flows and water resources, Fisheries, Habitat and biodiversity
Country France
Main contact forename Marc
Main contact surname Thibault
Main contact user ID
Contact organisation TOUR DU VALAT
Contact organisation web site http://tourduvalat.org/en/
Partner organisations
Parent multi-site project
This is a parent project
encompassing the following
projects
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Project summary

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The former saltworks of the Camargue are located in the southeast of the Rhône delta, in the Camargue Regional Natural Park and the UNESCO’s Man and Biosphere Reserve. This site represents a vast coastal area of over 6,500 ha in the municipalities of Arles and Saintes-Maries-de-la-Mer (Figure 3). Developed for salt production in the 1960’s, the site was modified and managed with a human dominated water cycle during 50 years. In 2011, the site was purchased by the Conservatoire du Littoral. At that time, the main objectives for the site moved from salt production to wetland conservation. A restoration process through adaptive management was quickly put into place by the Conservatoire du Littoral (owner), the Regional Natural Park of the Camargue (coordinating manager), the Tour du Valat Research Institute and the Society for Nature Conservation (co-managers). Through these efforts, the site is becoming a highly dynamic and functional coastal wetland that reconnects the surrounding aquatic ecosystems within the Camargue Natural Regional Park. This site hosts important biodiversity and acts as a buffer against sea floods. While one of the main ambitions of the restoration project is to enhance biodiversity, the significant expansion of new halophytic vegetation can also set up a natural protective defense to reduce wave energy, height and speed induced by sea surge in the coastal lagoons, thus decreasing flood effects inland. Furthermore, coastal vegetation can help increase sediment and organic matter trapping, reducing flood risks. But most importantly, the site provides space set aside to mitigate responses to sea-level rise. This corresponds to recent scientific research recommending that “accommodation space” should be expanded by using “natural and nature-based features”.

Monitoring surveys and results

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Image gallery


Flamants roses sur l etang du Fangassier
Le rassemblement par equipe a l aube
Vue Aérienne Du Site 2009
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Catchment and subcatchment

Catchment

River basin district Rhône - Méditerranée
River basin Rhône-Mediterranean

Subcatchment

River name Verdier marshes
Area category Less than 10 km²
Area (km2)
Maximum altitude category
Maximum altitude (m)
Dominant geology
Ecoregion
Dominant land cover Coastal wetlands and lagoons
Waterbody ID



Other case studies in this subcatchment: INTERREG MED WETNET - Membership card of the Verdier Marshes-Rhone Delta Wetland Contract, MediCyn, Restoration of the Cassaire wetland (Rhôle delta), The Verdier marshes


Site

Name Camargue’s former saltworks
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body No
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present No
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)


Project background

Reach length directly affected (m)
Project started 01/01/2008
Works started
Works completed
Project completed
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Total cost (k€)
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Funding sources Water Agency, Private sector and State funding

Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring



Reasons for river restoration

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern
Other Reconnection between the sea and the lagoons, installation of water sluices, artificial bird nesting islands.
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Physico-chemical quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Any other monitoring, e.g. social, economic

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative


Monitoring documents



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Additional links and references

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Supplementary Information

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