BENTHOSCOPE

Acoustic index of benthic resources on hard substrates for the assessment of impacts from tidal stream turbines

Context

The benthos, which corresponds to all organisms living near the bottom, is an essential compartment for the functioning of ecosystems in coastal environments. It also presents economic, heritage and emblematic challenges within these environments, which are also favoured for the deployment of renewable marine energy production facilities.

Objective

To diagnose the state and evolution of benthic communities in a rocky marine habitat by listening to the sounds they produce, similar to the stethoscope in the medical field.

Scientific content

Realisation of the first acoustic description of benthos on hard substrate and in a strong current.

Development of innovative, quantitative methods for environmental monitoring of the potential impacts of tidal turbines on the benthic compartment of hard substrates.

Expected results

This project addressed scientific and technical challenges (the first acoustic survey of benthic life on hard substrates in strong currents) at one of the first sites where tidal turbines were deployed in France.

Project sheet

Conclusion

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