Empirical investigation on the relationship between climate and small pelagic global regimes and El Niño-southern oscillation (ENSO)
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El Niño-Southern Oscillation (ENSO) variability is probably the best known mechanism of global climate variability, with large effects on marine ecosystems and particularly on small pelagic populations. However, major changes of small pelagic (abundance regimes) tend to occur on the interdecade scale, rather than with the interannual variability normally associated to ENSO. Despite some recent research, the role of ENSO variability at determining interdecadal climate variations (climate regimes ) is still a matter of controversy. In this work, we searched for statistical relationships between small pelagic and climate regimes and ENSO activity, and between these and indices of extratropical and solar variations over the interdecadal time scale...etc.