Connectivity patterns of coastal fishes following different dispersal scenarios across a transboundary marine protected area (Bonifacio strait, NW Mediterranean)
|Author(s)||Koeck Barbara1, 2, Gerigny Olivia1, 2, Durieux Eric Dominique Henri1, 2, Coudray Sylvain3, Garsi Laure-Helene1, Bisgambiglia Paul-Antoine1, 2, Galgani Francois4, Agostini Sylvia1, 2|
|Affiliation(s)||1 : Univ Corse Pasquale Paoli, UMR CNRS Sci Pour Environm 6134, F-20250 Corte, France.
2 : Univ Corse Pasquale Paoli, UMS CNRS Plateforme Marine Stella Mare 3514, F-20620 Biguglia, France.
3 : IFREMER, Lab Environm Ressources PACA Corse, F-83507 La Seyne Sur Mer, France.
4 : IFREMER, Lab Environm Ressources PACA Corse, F-20600 Bastia, France.
|Source||Estuarine Coastal And Shelf Science (0272-7714) (Academic Press Ltd- Elsevier Science Ltd), 2015-03 , Vol. 154 , P. 234-247|
|WOS© Times Cited||10|
|Keyword(s)||biophysical model, early life stages, reproductive timing, pelagic larval duration, Corsica, ichthyoplankton|
|Abstract||The Strait of Bonifacio constitutes one of the rare transboundary Marine Protected Areas (MPA) of the Mediterranean Sea (between Sardinia, Italy and Corsica, France). Based on the hypothesis that no-take zones will produce more fish larvae, compared to adjacent fished areas, we modeled the outcome of larvae released by coastal fishes inside the no-take zones of the MPA in order to: (i) characterize the dispersal patterns across the Strait of Bonifacio; (ii) identify the main potential settlement areas; (iii) quantify the connectivity and the larval supply from the MPAs to the surrounding areas. A high resolution hydrodynamic model (MARS 3D, Corse 400m) combined to an individual based model (Ichthyop software) was used to model the larval dispersal of fish following various scenarios (Pelagic Larval Duration PLD and release depth) over the main spawning period (i.e. between April and September). Dispersal model outputs were then compared with those obtained from an ichthyoplankton sampling cruise performed in August 2012. There was a the significant influence of PLD to the connectivity between coastal areas. The synchronization between spawning and hydrodynamic conditions appeared to be determinant in the larval transport success. Biotic and abiotic parameters affecting the dispersal dynamic of fish larvae within the Strait of Bonifacio were identified and synthesis maps were established as a tool for conservation planning.|