Évaluation du descripteur 10 « Déchets marins » en France métropolitaine. Rapport scientifique pour l’évaluation 2024 au titre de la DCSMM.

• Main Authors: Gerigny, Olivia, Lacroix, Camille, Brun, Mélanie, Olsommer, Maxime, André, Sylvère, Tomasino, Corinne, Paul, M, Beauvais, Sophie, Georges, Elise, Galgani, Francois
• Format: Report
• Language: French
• Published: 2022
• Subjects: Fulmar; Northern Fulmar
• Online Access: https://archimer.ifremer.fr/doc/00868/97951/107121.pdf; https://doi.org/10.13155/97951; https://archimer.ifremer.fr/doc/00868/97951/

The descriptor D10 considers macro- and micro- litter in several compartments in marine environment (on the coastline, in the surface layer of the water column and on the seafloor) and their impacts (ingestion, entanglement) on marine species (northern fulmar, loggerhead sea turtle, common shag) at marine sub-region scale (MSR) in Channel-North Sea (CNS), Celtic Seas (CS), Bay of Biscay (BoB) and Western Mediterranean (WM). For the indicator “litter (excluding micro-litter) on the coastline” related with the criterion D10C1, the achievement of Good Environmental Status (GES) is defined by the assessment of the achievement of the threshold of 20 litter/100m. For the other indicators of criteria D10C1 and D10C2, and in the absence of a baseline and threshold (currently being defined by the TG ML), the trends "total quantity of floating litter", "total quantity of seabed litter" and "total quantity of floating micro-litter" are used to qualify the status of the parameter. When this trend expresses an improvement (decrease in litter pollution), a stable level (no change) or an "unknown" trend (statistical reason), it does not allow to conclude on the realization of the parameter, which is then considered as "unknown". When the trend expresses an increase in litter pollution (significant increase), then the parameter is "not achieved", in accordance with the DCSMM principle of non-deterioration of the state. In the absence of rules of integration, the achievement of GES is established at indicator’s level as recommended in the review of the Guidance Document related to the Article 8 of the MSFD (European Commission, 2022). For the MSFD cycle 3, the results for each indicator are filled in the Table 1. The criterion D10C3, indicator “litter ingested by marine turtles” has been evaluated. But, in the absence of threshold value and rules of integration, the status of indicator has been filled « unknown » as recommended in the revision of Art. 8. The criterion D10C4 could not be assessed, because the associated ...