Article (Scientific journals)
Seagrass sod transplantation: A relevant tool for preventing the destruction of meadows in coastal construction projects
Pierre, Descamp; Sébastien, Personnic; Gobert, Sylvie et al.
2025In Environmental Challenges, 18, p. 101087
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Keywords :
AMC sequence; Avoid-mitigate-compensate; Coastal construction impact; Dredging impacts; Ecological restoration; Posidonia oceanica; Seagrass meadows transplantation; Seagrass sod transplantation; Seagrass transplantation; Seagrasses; Global and Planetary Change; Environmental Engineering; Waste Management and Disposal; Pollution; Management, Monitoring, Policy and Law
Abstract :
[en] We present a successful case of seagrass meadow transplantation on the scale of an industrial project, challenging the long-held belief that these ecosystems are "non-transplantable." Using a sod-based transplantation technique, we relocated 384 m² of Posidonia oceanica meadow from a construction site in 24 days in 2017 to mitigate the environmental impact of reclaiming six hectares of marine land for a new development in Monaco. The eight-year monitoring program (2017–2024) evaluated both structural and physiological parameters of the transplanted seagrass, along with the sediment chemistry in its surrounding environment. Despite nearby maritime construction works during two years, the transplanted meadow showed remarkable resilience, with its health indicators quickly aligning with those of the surrounding natural meadows. Three years after transplantation, the seagrass was flowering in synchrony with the natural meadow and after eight years, its area had expanded beyond the initial transplant, growing by 25,8 % in 2024. This outcome supports salvaging and subsequent transplantation as a viable, ecologically sound alternative to destruction and subsequent compensation measures in coastal development projects. By confirming the effectiveness of careful transplantation techniques, the study underscores that transplantation should be fully considered as a relevant mitigation measure in the Avoid-Mitigate-Compensate sequence.
Disciplines :
Environmental sciences & ecology
Aquatic sciences & oceanology
Author, co-author :
Pierre, Descamp ;  Andromede Oceanologie, Mauguio, France
Sébastien, Personnic;  Andromede Oceanology Monaco, Monaco
Gobert, Sylvie  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique ; Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS) ; STARESO - Station de Recherches Sous-marines et Océanographiques
Boulenger, Arnaud  ;  Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS) ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique ; STARESO - Station de Recherches Sous-marines et Océanographiques
Michèle, Leduc;  STARESO Submarine and Oceanographic Research Station, Calvi, France
Gwenaelle, Delaruelle;  Andromede Oceanologie, Mauguio, France
Adèle, Barroil;  MARBEC, University of Montpellier, Montpellier, France
Guilhem, Marre;  Andromede Oceanologie, Mauguio, France
Florian, Holon;  Andromede Oceanologie, Mauguio, France
Julie, Deter;  Andromede Oceanologie, Mauguio, France ; MARBEC, University of Montpellier, Montpellier, France
Language :
English
Title :
Seagrass sod transplantation: A relevant tool for preventing the destruction of meadows in coastal construction projects
Publication date :
April 2025
Journal title :
Environmental Challenges
eISSN :
2667-0100
Publisher :
Elsevier B.V.
Volume :
18
Pages :
101087
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
14. Life below water
Available on ORBi :
since 28 January 2025

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