Modelling coral larval dispersal for Marine Protected Area design in the Wakatobi islands (Indonesia)

Faryuni, Irfana;Saint-Amand, Antoine;Umar, Widyastuti;Jompa, Jamaluddin;Hanert, Emmanuel;et.al.
(2021) 14th International Coral Reef Symposium — Location: Bremen (Virtual) (19.July.2021)

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Authors
  • Faryuni, Irfanaorcid-logoUCLouvain
    Author
  • Saint-Amand, Antoineorcid-logoUCLouvain
    Collaborator
  • Umar, WidyastutiUniversitas Hasanuddin
    Collaborator
  • Jompa, JamaluddinUniversitas Hasanuddin
    Collaborator
  • Hanert, Emmanuelorcid-logoUCLouvain
    Author
  • et. al.
Abstract
Understanding the connectivity between reefs is the key to effective marine conservation and management. Relations between MPAs and other reefs improve the territorial resilience for the areas around MPA. Potential connectivity of coral larvae, together with other criteria (reef size, quality, productivity) ought to be considered when planning spatial management policies to ensure the persistence of coral reef systems. Here we modelled Acropora millepora dispersal in the Wakatobi islands, South East of Sulawesi, Indonesia, by using the high-resolution ocean model SLIM. We used then a Lagrangian particle tracker to model the coral larval dispersal. We also analyzed the connectivity by using graph theory to explore the spatial connections and to determine the importance of each site to local and regional connectivity. In particular, we used Google's PageRank algorithm to identify the main source and sink reefs, as well as the reefs best suited for protection and restoration. The results presented here (the connectivity indices) can be used to indicate regional patterns of coral larvae connectivity and suggest areas that should be protected or restored for marine conservation purposes. We recognized regions with a high PageRank Protection index yet excluded from the marine protected area. This information would be valuable for the researcher as a stepping stone to do field observation. It is also helpful for marine managers to plan science-based MPAs and better arrangement of the reclamation program.
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Faryuni, I., Hanert, E., & et al. (2021). Modelling coral larval dispersal for Marine Protected Area design in the Wakatobi islands (Indonesia). 14th International Coral Reef Symposium, Bremen (Virtual). https://hdl.handle.net/2078.5/224093