Measuring sensitivity of two OSPAR indicators for a coastal food web model under offshore wind farm construction

Aurore Raoux; Géraldine Lassalle; Jean-Philippe Pezy; Samuele Tecchio; Georges Safi; Bruno Ernande; Camille Mazé; François Le Loc'H; Justine Lequesne; Valerie Girardin; Jean-Claude Dauvin; Nathalie Niquil

Measuring sensitivity of two OSPAR indicators for a coastal food web model under offshore wind farm construction

Aurore Raoux ^{1, 2} Géraldine Lassalle ³ Jean-Philippe Pezy ¹ Samuele Tecchio ² Georges Safi ² Bruno Ernande ⁴ Camille Mazé ⁵ François Le Loc'H ⁵ Justine Lequesne ⁶ Valerie Girardin ⁷ Jean-Claude Dauvin ¹ Nathalie Niquil ²

1 M2C - Morphodynamique Continentale et Côtière

2 BOREA - Biologie des Organismes et Ecosystèmes Aquatiques

3 IRSTEA - Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture

4 IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer - Brest

5 LEMAR - Laboratoire des Sciences de l'Environnement Marin (LEMAR)

6 CLCC Henri Becquerel - Centre de Lutte Contre le Cancer Henri Becquerel Normandie Rouen

7 LMNO - Laboratoire de Mathématiques Nicolas Oresme

Abstract : A combination of modelling tools was applied to simulate the impacts of the future Courseulles-sur-mer offshore wind farm (OWF) construction (Bay of Seine, English Channel) on the ecosystem structure and functioning. To do so, food-web models of the ecosystem under three scenarios were constructed to investigate the effect caused by the OWF of added substrate (reef effect), fishing restriction (reserve effect), and their combined effect. Further, Ecological Network Analysis indices and Mean Trophic Level were derived to investigate their suitability for detecting changes in the ecosystem state. Our analysis suggests changes in the ecosystem structure and functioning after the OWF construction, the ecosystem maturity was predicted to increase, but no alterations in its overall resilience capacity.

Keywords : Ecopath Ecological Network Analysis Ecosim Reef effect Reserve effect Mean Trophic Level Marine renewable energy

Type de document :

Article dans une revue

Domaine :

Sciences de l'environnement / Biodiversité et Ecologie

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https://hal-normandie-univ.archives-ouvertes.fr/hal-01938892
Contributeur : Pierre Weill <>
Soumis le : mercredi 29 mai 2019 - 10:28:03
Dernière modification le : vendredi 27 septembre 2019 - 17:38:03

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