Titre :

An ecosystem model for assessing potential impacts of offshore windfarm on Eastern English Channel ecosystem

Auteur(s) :

Huang, Yansong [Auteur correspondant]
Laboratoire Ressources Halieutiques de Boulogne [LRHBL]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
France Energies Marines [Brest]
Girardin, Raphael [Auteur]
Laboratoire Ressources Halieutiques de Boulogne [LRHBL]
Ben Rais Lasram, Frida [Auteur]
Université du Littoral Côte d'Opale [ULCO]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Oliveros-Ramos, Ricardo [Auteur]
MARine Biodiversity Exploitation and Conservation - MARBEC [UMR MARBEC]
Safi, Georges [Auteur]
France Energies Marines [Brest]
Quennevat, Antoine [Auteur]
Laboratoire Ressources Halieutiques de Boulogne [LRHBL]
Halouani, Ghassen [Auteur]
Laboratoire Ressources Halieutiques de Boulogne [LRHBL]

Titre de la manifestation scientifique :

The International Council for the Exploration of the Sea (ICES) 2024

Organisateur(s) de la manifestation scientifique :

ICES (International Council for the Exploration of the Sea)

Ville :

Gateshead

Pays :

Royaume-Uni

Date de début de la manifestation scientifique :

2024-09-09

Mot(s)-clé(s) en anglais :

ecosystem model
offshore wind energy
fishing
scenarios
cumulative impacts

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

The development of offshore windfarms (OWFs) plays a crucial role in the energy transition to provide a sustainable source of renewable energy and achieve decarbonisation targets. However, the ecosystem effects of this ...
Lire la suite >The development of offshore windfarms (OWFs) plays a crucial role in the energy transition to provide a sustainable source of renewable energy and achieve decarbonisation targets. However, the ecosystem effects of this expansion remain largely unexplored. This study explored the potential impacts of OWFs in the Eastern English Channel using a multispecies, individual-based model. The main objective of this work is to improve the evaluation of the ecosystem effects of OWFs by considering multiple pressures in a single modelling framework and analyse the ecosystem response under different scenarios of OWF deployment and fishing strategies. This study is an application of an OSMOSE model which represents the main processes of the life cycle of high trophic level species. The model is based on opportunistic predation and spatial co-occurrence between a predator and its preys. This application was calibrated to reproduce observed trends in biomass and catches over the period 2002-2022. The emergent properties of the model (e.g., growth, food web structure) were validated to ensure its ecological realism. Four scenarios of OWF deployment were simulated to investigate the ecosystem response of multiple pressures related to windfarms installations: 1/ energy costs minimisation, 2/ exclusion from regulatory environmental protection zones, 3/ minimal limit of distance from the coast and 4/ a balanced scenario combining the previous three scenarios. The scenarios accounted for the following pressures: fishing access restriction, underwater noise, habitat modification, electromagnetic field and changes of plankton communities. Several ecosystem indicators were used to assess the effect of each pressure as well as the combined effect of all pressures under the different scenarios. Furthermore, a focus on biomass and catch based indicators gave more insights on the spatial extent of the cumulative impacts of fishing activities and OWFs in the Eastern English Channel.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

Transdisciplinary graduate school for marIne, Fisheries and SEAfood sciences
France Energies Marines

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL