Thomas Y. auteur aut IRD Le Gendre R. auteur aut IRD Garen P. auteur aut IRD Dumas F. auteur aut IRD Andréfouët Serge auteur aut IRD text journalArticle eng text/pdf reformatted digital access Patterns of bivalve larvae dispersal in the deep Ahe atoll lagoon was studied by using a numerical 3D transport model (MARS3D) coupled with a vertical swimming sub-model, forced mainly by tide and wind-induced currents. The simulations were validated against observations of larval dispersal monitored several days throughout the lagoon. Connectivity matrices describing larval exchanges inside the lagoon were inferred. Larvae displayed a significant dispersal capacity at the lagoon scale, especially with dominant eastern winds. With southeastern winds, larvae mostly remained in their origin sector. The total export rate of the larvae, toward the ocean through the pass and shallow lagoon borders, was independent of the wind conditions, with 1% of the total concentration exported per day. However, the tide-driven currents efficiently flushed larvae in sectors close to the pass. Connectivity matrices suggest that the south and west sectors were more suitable for spat collecting and that central sectors would be efficient sanctuaries if genitors were accumulated. specialized INVERTEBRE AQUATIQUE LARVE ABONDANCE DISTRIBUTION SPATIALE MIGRATION MODELE AQUACULTURE HUITRE PERLIERE MOLLUSQUE RELATION ESPECE ENVIRONNEMENT POLYNESIE FRANCAISE 036MILMAR01 040AQUAC Andréfouët Serge ed. edt IRD Charpy Loïc ed. edt IRD 65 10-12 441-452 2012 0025-362X https://www.documentation.ird.fr/hor/fdi:010056903 10.1016/j.marpolbul.2011.12.027 0025-362X [F A010056899] https://www.documentation.ird.fr/hor/fdi:010056903 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers21-01/010056903.pdf IRD - Base Horizon / Pleins textes 2012-09-07 2024-03-12 fdi:010056903 fre