Erving white sandy beaches around the tourist island of Bora Bora, the powerful human density and rarity of inhabitable locations inside the steep inner components with the island make Tachysterol 3 Epigenetics coastal erosion a major challenge on Bora Bora, particularly in the context of increasing human populations on the island [14]. There is a really need to adapt lifestyles and public infrastructures to the altering climate, sea level rise, and more frequent and intense storm surges and swell [20]. There have to be incentives to encourage islanders to move further inland when feasible and revegetate the shorelines instead of fight a losing fight against erosion and aggravate the problem. Communicating with all the public, developing management plans, and stabilising the coastline with nature-based options are necessary to tackle the Seclidemstat site problem head-on in Bora Bora and in similar contexts worldwide.Remote Sens. 2021, 13,17 of5. Conclusions High-resolution aerial pictures of Bora Bora obtained from 1955 to 2019 highlighted the in depth coastal urbanisation undergone by the island since the mid-20th century. Although quays and embankments have been scarce within the 1950s, they represent 61 in the shoreline nowadays. This transition away from organic shorelines is accompanied by modified sedimentary regimes, and outcomes in enhanced coastal erosion. Inside the context of climate change and growing demographic stress, preserving shoreline stability on little Pacific islands, where most constructions are located inside meters in the sea, is essential for livelihoods. The long-term impact of coastal modifications on erosional processes on Bora Bora indicated by the aerial imagery series highlight the need to have for proactive nearby management, together with the removal of embankments and restoration of all-natural shoreline forms, notably of vegetation possessing robust root systems capable of stabilising sediments.Author Contributions: Conceptualization, E.G., A.C., D.J. and D.L.; formal evaluation, E.G.; funding acquisition, D.L.; investigation, E.G.; methodology, E.G., A.C., D.J. and F.D.; sources, T.M., Y.R. and L.L.; software, A.C. and D.J.; supervision, A.C., D.J. and D.L.; validation, A.C., D.J., T.M., Y.R., L.L. and D.L.; writing–original draft, E.G.; writing–review and editing, E.G., A.C., F.D., M.J. and D.L. All authors have read and agreed towards the published version with the manuscript. Funding: This operate has received several grants: Fondation de France (2019-08602), Minist e de l’Economie verte et du domaine-D ation la recherche de Polyn ie fran ise (contrat N3622 MED-EPHE), Office Fran is de la Biodiversit(AFB/2019/385-OFB.20.0888), Polyn ienne des Eaux, ANR-19-CE34-0006-Manini, ANR-19-CE14-0010-SENSO, the Rhui Forum and Ressource Center a supported by Bloomberg’s Philanthropy. Institutional Review Board Statement: Not applicable. Informed Consent Statement: Not applicable. Information Availability Statement: The information presented in this study are openly readily available in FigShare at doi.org/10.6084/m9.figshare.17048672. Acknowledgments: We would like to thank the staff of Section Cadastre-Topographie de la path des affaires fonci es (DAF) de Polyn ie-Fran ise for offering the satellite pictures, too because the employees of `Polyn ienne des Eaux’ and in the Mairie of Bora Bora for their assist within the field. We also thank the Earth and Biodiversity Science Graduate System of PSL UniversitParis (PG EABIS). Conflicts of Interest: The authors declare no conflict of interest.
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