Research & Development
Project
Migratory avifauna and offshore wind farms: improving the assessment of collision risks using observations from weather radars
Many terrestrial migratory birds fly over coastal and marine areas during their migration. Offshore wind farms (OWF) could have an impact on birds by causing collisions leading to mortality. Collision Risk Models (CRMs) are widely used in the marine environment for seabirds as part of environmental impact assessments for offshore wind projects. Their use for terrestrial migratory birds is questioned due to the greater uncertainty in the data used to describe their flight parameters at sea (e.g. flight altitude or bird density).
The AVOCET project aims to improve the robustness of these models by integrating innovative flight data on terrestrial migratory birds , acquired from the European weather radar network.
Key questions include:
• Development of algorithms for 3D detection and quantification of bird fluxes from weather radar. Uncertainty assessment.
• Extrapolation and analysis of 3D fluxes and migration peaks in offshore environments using radar network data. Uncertainty assessment
• Description of migration phenology and peak passage periods
• Review of CRMs and creation of a database on bird flight parameters
• Assessment of uncertainty propagation and sensitivity analysis of input parameters for collision risk models
• Critical analysis of the contribution of weather radar data compared to traditional data
• Development of a collaborative roadmap and recommendations tailored to local contexts for future impact assessments
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This project is led by France Energies Marines
This project receives funding from the French government which is managed by the Agence Nationale de la Recherche as part of the France 2030 investment plan. It is also supported by the Brittany, Normandy, and SUD Provence-Alpes-Côte d’Azur regions.
This project is certified by the maritime clusters Pôle Mer Bretagne Atlantique and Pôle Mer Méditerranée.
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