AVOREST

AVOREST solutions

The AVOREST system is a combination of two innovative technologies made to attract and help Young of the Year fishes to grow with lower mortality rates: SAFE & BIOHUT©.

The SAFE has been designed to attract post-larvae with sounds. Several publication shows how the sound attraction works in marine ecosystem for marine post-larvae1. Moreover, larval fish attraction made by the emission of recorded reefs sound has been experimented and its efficiency demonstrated through scientific publications2.  

SAFE system is based on the knowledge acquired from decades of experience regarding Orientation of oceanic fish post-larvae. They migrate to colonize shallow coastal waters through the hearing of specific biological sounds emitted by their congeners or by a biotope in good condition.

Based on scientific results and through a research project in Lizard Island supported by the French innovation agency between 2008 and 2011, ECOCEAN designed a post-larvae capture tool called SAFE (Sound Attracting Fish Eco-friendly). This system was designed for tropical water and it is now under development to be used in a large range of water temperatures. Lizard Island (Australia) results clearly showed that SAFE attracted more larvae than a simple trap based on light. However, the SAFE system still needs to enter into its industrialized phase.

Through numerous R&D projects and scientific publications, ECOCEAN has developed, monitored and validated a range of complex artificial habitats, named BIOHUT©. ECOCEAN’s objective is to support fish production and biodiversity by protecting the most vulnerable life stages of fish and other marine invertebrates while producing a rich and diverse flora and fauna providing the trophic resource. Those habitats aim at restoring the essential ecological functions of nurseries and corridor habitats, while another range of innovative models are currently being developed and tested. ECOCEAN is able to offer its solutions as measures of accompanying, reduction or mitigation to maritime development projects. A project in Calais’ harbour extension has already demonstrated the effectiveness of BIOHUT© in real conditions.

AVOREST innovation aims at combining these two technologies to avoid young stages of fish to be in inadequate zones impacted by turbidity, anthropogenic sounds or destroyed habitats.

We can considered the TRL of BIOHUT© at level 9 and the SAFE at level 6. The objective is to reach a TRL level 8 for the AVOREST. We will monitor the biological activity of the system in two sites under temperate conditions. This will be carried out visually and acoustically.

The combination of these two actions is expected to increase the abundance and diversity of fishes by 20 in coastal work impacted areas.

More information

  • Reference 1 : “Sound as an Orientation Cue for the Pelagic Larvae of Reef Fishes and Decapod Crustaceans” John C.Montgomery, Andrew Jeffs, Stephen D.Simpson, Mark Meekan, Chris Tindle, 2006, ElvesierReference 1: “Sound as an Orientation Cue for the Pelagic Larvae of Reef Fishes and Decapod Crustaceans” John C.Montgomery, Andrew Jeffs, Stephen D.Simpson, Mark Meekan, Chris Tindle, 2006, Elvesier
  • Reference 2 : “Attraction of settlement: stage control reef fishes to reef noise”. *S. D. Simpson, M. G. Meekan, R. D. McCauley, A. Jeffs, 2004, Inter-Research
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