European fisheries flip with long-term ocean cycle – Atlantic Multidecadal Oscillation

A sudden switch from herring to sardines in the English Channel in the 1930s was due to a long-term ocean cycle called the Atlantic Multidecadal Oscillation (AMO), an international study shows.  This is the first evidence linking the AMO to trends in important European fisheries. The study, funded by the governments of the UK, Canada, Norway, the USA and Germany, compared data on sea-surface temperatures with measurements of plankton concentrations continued

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