Effects of Nutrient Management Scenarios on Marine Food Webs: A Pan-European Assessment in Support of the Marine Strategy Framework Directive

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2021-03-01

Author

Piroddi, Chiara
Akoğlu, Ekin
Andonegi, Eider
Bentley, Jacob W.
Celic, Igor
Coll, Marta
Dimarchopoulou, Donna
Friedland, Rene
de Mutsert, Kim
Girardin, Raphael
Garcia-Gorriz, Elisa
Grizzetti, Bruna
Hernvann, P. -Y.
Heymans, Johanna J.
Mueller-Karulis, Barbel
Libralato, Simone
Lynam, Christopher P.
Macias, Diego
Miladinova, Svetla
Moullec, Fabien
Palialexis, Andreas
Parn, Ove
Serpetti, Natalia
Solidoro, Cosimo
Steenbeek, Jeroen
Stips, Adolf
Tomczak, Maciej T.
Travers-Trolet, Morgane
Tsikliras, Athanassios C.

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Eutrophication is one of the most important anthropogenic pressures impacting coastal seas. In Europe, several legislations and management measures have been implemented to halt nutrient overloading in marine ecosystems. This study evaluates the impact of freshwater nutrient control measures on higher trophic levels (HTL) in European marine ecosystems following descriptors and criteria as defined by the Marine Strategy Framework Directive (MSFD). We used a novel pan-European marine modeling ensemble of fourteen HTL models, covering almost all the EU seas, under two nutrient management scenarios. Results from our projections suggest that the proposed nutrient reduction measures may not have a significant impact on the structure and function of European marine ecosystems. Among the assessed criteria, the spawning stock biomass of commercially important fish stocks and the biomass of small pelagic fishes would be the most impacted, albeit with values lower than 2.5%. For the other criteria/indicators, such as species diversity and trophic level indicators, the impact was lower. The Black Sea and the North-East Atlantic were the most negatively impacted regions, while the Baltic Sea was the only region showing signs of improvement. Coastal and shelf areas were more sensitive to environmental changes than large regional and sub-regional ecosystems that also include open seas. This is the first pan-European multi-model comparison study used to assess the impacts of land-based measures on marine and coastal European ecosystems through a set of selected ecological indicators. Since anthropogenic pressures are expanding apace in the marine environment and policy makers need to use rapid and effective policy measures for fast-changing environments, this modeling framework is an essential asset in supporting and guiding EU policy needs and decisions.

URI

https://hdl.handle.net/11511/90719

Journal

FRONTIERS IN MARINE SCIENCE

DOI

https://doi.org/10.3389/fmars.2021.596797

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Graduate School of Marine Sciences, Article

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Citation Formats

C. Piroddi et al., “Effects of Nutrient Management Scenarios on Marine Food Webs: A Pan-European Assessment in Support of the Marine Strategy Framework Directive,” FRONTIERS IN MARINE SCIENCE, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/90719.