“…Three main mechanisms have been proposed: a limitation in trophic conditions (Bonhommeau, Chassot, & Rivot, ; Bonhommeau et al., ; Desaunay & Guerault, ; Friedland, Miller, & Knights, ; ICES, ; Kettle & Haines, ; Knights, ; Munk et al., ), changes in oceanic currents modifying larval transport (Castonguay, Hodson, Moriarty, et al., ; Friedland et al., ; ICES, ; Knights, ; Zenimoto et al., ), and/or spatial oscillations of a salinity front used by adult eels to detect the spawning grounds which then lead to oscillations in the success of larval transport (Kimura, Inoue, & Sugimoto, ; Kimura & Tsukamoto, ). In addition to statistical correlations, Lagrangian simulations of larval drift have also been carried out to explore some mechanisms (Bonhommeau, Castonguay, Rivot, Sabatié, & Le Pape, ; Bonhommeau et al., ; Kettle & Haines, ; Kim et al., ; Melià et al., ; Pacariz, Westerberg, & Björk, ; Zenimoto et al., ). These simulations suggested that, while for European eel the correlation between NAO and recruitment more likely reflects an indirect effect of trophic conditions in the Sargasso Sea (Bonhommeau et al., ; Pacariz et al., ), changes in oceanic currents directly affect Japanese eel larval drift (Kim et al., ; Zenimoto et al., ).…”