Research & Development

Projet

MIGRALION

Complementary methods to characterise the use of the North-East Atlantic Arc by birds and bats

Motivation & background

New anthropogenic uses, in particular the installation of offshore wind farms, are planned in the Gulf of Lion, a biodiversity hotspot in the Mediterranean Sea. However, very little is known about the use of this area by birds and bats, whether sedentary or migratory. Data acquisition is therefore essential to fill these knowledge gaps and ensure the preservation of the species faced with these emerging challenges.

MIGRALION Project

Objective

  • Characterising migration flows, flight altitudes and the functionality of marine areas for marine and terrestrial migratory bird and bat species at the scale of the Gulf of Lion.

Scientific content

State of knowledge about birds and bats in the Gulf of Lion.

Deployment of complementary means and technologies (inshore and offshore radars, biologging, at-sea surveys by boat, acoustic monitoring, bird ringing, coastal surveys).

Combined modelling of the acquired data for an integrative approach

Resources

On 6 November 2025, the scientific consortium of the MIGRALION programme presented the programme’s main final findings, gathered between 2021 and 2025. This overview highlights the use of the marine environment by seabirds and land-based migratory birds in the Gulf of Lion, based on three consecutive years of monitoring and the analysis of large volumes of data. This knowledge helps to improve the consideration of birdlife and bats in the development of offshore wind projects.

Conclusion

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Partners

This project was led by Office Français de la Biodiversité and France Energies Marines

Logo Office Français de la Biodiversité (OFB)
Logo France Energies Marines
Logo Centre d'écologie fonctionnelle et évolutive (CEFE)
Logo CNRS 2023
Logo Biotope
Logo Muséum National d'Histoire Naturelle
Logo Pôle Mer Méditerranée
Logo Vogelwarte
Logo LPO
Logo Tour du Valat
Logo IRD
Logo Med Migration
Logo Centre d'études biologiques (CEBC) de Chizé
Logo Marbec
Logo Aude Nature

Funding

This research programme was co-funded by the Ministry for Ecological Transition of France, the Sud – Provence-Alpes-Côte d’Azur Region and the Occitanie Region

Logo Ministère de la transition écologique
Logo Région SUD Provence-Alpes-Côte d'Azur
Logo Région Occitanie

Accreditation

This project was certified by the maritime cluster Pôle Mer Méditerranée.  

Logo Pôle Mer Méditerranée

Find out more

Poster

MIGRALION/MIGRATLANE Presentation

Poster

General presentation of MIGRALION

Poster

Radar monitoring

Poster

At-sea survey

Poster

Telemetry

Poster

Restitution des résultats

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