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The Genetic Component of Seagrass Restoration: What We Know and the Way Forwards
Review

Restoration of Seagrass Meadows in the Mediterranean Sea: A Critical Review of Effectiveness and Ethical Issues

1
Aix-Marseille University and University of Toulon, MIO (Mediterranean Institute of Oceanography), CNRS, IRD, Campus of Luminy, 13009 Marseille, France
2
Università di Corsica Pasquale Paoli, Fédération de Recherche Environnement et Societé, FRES 3041, Corti, 20250 Corsica, France
*
Author to whom correspondence should be addressed.
Academic Editors: Sebastiano Calvo and Agostino Tomasello
Water 2021, 13(8), 1034; https://doi.org/10.3390/w13081034
Received: 18 January 2021 / Revised: 26 March 2021 / Accepted: 31 March 2021 / Published: 9 April 2021
(This article belongs to the Special Issue Restore Degraded Marine Coastal Areas in the Mediterranean Sea)
Some species of seagrasses (e.g., Zostera marina and Posidonia oceanica) have declined in the Mediterranean, at least locally. Others are progressing, helped by sea warming, such as Cymodocea nodosa and the non-native Halophila stipulacea. The decline of one seagrass can favor another seagrass. All in all, the decline of seagrasses could be less extensive and less general than claimed by some authors. Natural recolonization (cuttings and seedlings) has been more rapid and more widespread than was thought in the 20th century; however, it is sometimes insufficient, which justifies transplanting operations. Many techniques have been proposed to restore Mediterranean seagrass meadows. However, setting aside the short-term failure or half-success of experimental operations, long-term monitoring has usually been lacking, suggesting that possible failures were considered not worthy of a scientific paper. Many transplanting operations (e.g., P. oceanica) have been carried out at sites where the species had never previously been present. Replacing the natural ecosystem (e.g., sandy bottoms, sublittoral reefs) with P. oceanica is obviously inappropriate in most cases. This presupposes ignorance of the fact that the diversity of ecosystems is one of the bases of the biodiversity concept. In order to prevent the possibility of seagrass transplanting from being misused as a pretext for further destruction, a guide for the proper conduct of transplanting is proposed. View Full-Text
Keywords: Cymodocea nodosa; ecosystem diversity; Mediterranean; natural recolonization; Posidonia oceanica; seagrass decline; seagrass restoration; transplanting; Zostera marina Cymodocea nodosa; ecosystem diversity; Mediterranean; natural recolonization; Posidonia oceanica; seagrass decline; seagrass restoration; transplanting; Zostera marina
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MDPI and ACS Style

Boudouresque, C.-F.; Blanfuné, A.; Pergent, G.; Thibaut, T. Restoration of Seagrass Meadows in the Mediterranean Sea: A Critical Review of Effectiveness and Ethical Issues. Water 2021, 13, 1034. https://doi.org/10.3390/w13081034

AMA Style

Boudouresque C-F, Blanfuné A, Pergent G, Thibaut T. Restoration of Seagrass Meadows in the Mediterranean Sea: A Critical Review of Effectiveness and Ethical Issues. Water. 2021; 13(8):1034. https://doi.org/10.3390/w13081034

Chicago/Turabian Style

Boudouresque, Charles-François; Blanfuné, Aurélie; Pergent, Gérard; Thibaut, Thierry. 2021. "Restoration of Seagrass Meadows in the Mediterranean Sea: A Critical Review of Effectiveness and Ethical Issues" Water 13, no. 8: 1034. https://doi.org/10.3390/w13081034

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