The following text comes from different sources:

• Boudouresque C. F., Bernard G., Bonhomme P., Charbonnel E., Diviacco G., Meinesz A., Pergent G., Pergent-Martini C., Ruitton S., Tunesi L., 2012. Protection and conservation of Posidonia oceanica meadows. RAMOGE and RAC/SPA publisher, Tunis: 1-202. https://www.rac-spa.org/sites/default/files/doc_vegetation/ramoge_en.pdf
• Díaz-Almela E. & Duarte C.M. 2008. Management of Natura 2000 habitats. 1120 *Posidonia beds (Posidonion oceanicae). European Commission. https://uicnmed.org/bibliotecavirtualposidonia/wp-content/uploads/2014/04/MANAGEMENT-of-Natura-2000-habitats-Posidonia-beds.pdf
• Telesca, L. et al. Seagrass meadows (Posidonia oceanica) distribution and trajectories of change. Sci. Rep. 5, 12505; doi: 10.1038/srep12505 (2015).
• French Platform Medtrix: Link