File:Récifs artificiels dans le port de La Ciotat (Ifremer 00818-92973 - 53786).jpg

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Shallow coastal waters are essential habitats for many species of fish: they grow there before being able to reach their adult living areas.

Summary

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Description
Français :

Les petits fonds côtiers sont des habitats essentiels pour de nombreuses espèces de poissons : elles y grandissent avant de pouvoir rejoindre leurs zones de vie adultes. Or, ces zones essentielles à leur développement sont souvent dégradées par les aménagements des zones côtières (ports, digues, etc.). Une solution consiste à fixer des habitats artificiels au service de la réhabilitation des milieux naturels. Les herbiers artificiels, ou « roselières », reproduisent les habitats des espèces marines locales en mimant les caractéristiques des herbiers de Posidonie méditerranéens. Les blocs en béton, réalisés en impression 3D, visent à recréer des cavités pour abriter les poissons.

L’enjeu écologique global de cette action est de redynamiser les fonctions écologiques du milieu côtier et de favoriser notamment le retour des juvéniles de poissons. Ces dispositifs feront l’objet d’un suivi approfondi pour évaluer leur efficacité dans la durée.

Ces expérimentations ont été menées avec la start-up Seaboost en partenariat avec la Métropole Toulon Provence Méditerranée, Autorité Portuaire, et son concessionnaire, la Chambre de commerce et d’industrie du Var.

English:

Shallow coastal waters are essential habitats for many species of fish: they grow there before being able to reach their adult living areas. However, these areas essential to their development are often degraded by coastal developments (ports, dikes, etc.). One solution is to install artificial habitats to rehabilitate natural environments. Artificial seagrass beds, or "reed beds", reproduce the habitats of local marine species by mimicking the characteristics of Mediterranean Posidonia seagrass beds. The concrete blocks, made using 3D printing, aim to recreate cavities to shelter fish.

The overall ecological challenge of this action is to revitalize the ecological functions of the coastal environment and in particular to promote the return of juvenile fish. These measures will be subject to in-depth monitoring to assess their effectiveness over time.

These experiments were carried out with the start-up Seaboost in partnership with the Toulon Provence Méditerranée Metropolis, Port Authority, and its concessionaire, the Var Chamber of Commerce and Industry.
Date 30 September 2022 (upload date)
Source Récifs artificiels dans le port de La Ciotat
Author Olivier Dugornay (IFREMER, Pôle Images, Centre Bretagne - ZI de la Pointe du Diable - CS 10070 - 29280 Plouzané, France)
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Bounding box
InfoField
N: 44.603362°N
W: 6.072106°E E: 9.606041°E
S: 43.249502°N
Keywords
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Artificial reefs; Habitats

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