Westward feeding range expansion of Northeast Atlantic mackerel from 2007 to 2013: effects of temperature, zooplankton abundance and spawning stock size.

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Northeast Atlantic (NEA) mackerel (Scomber scombrus) is a fast swimming plankton feeding fish which occupy temperate waters of the Northeast Atlantic. Traditionally, majority of the mackerel stock feed in surface layer of the Norwegian Sea and in the North Sea (55-75°N and < 0.001, r2 = 0.28), whereas the southern edge, into the North Atlantic Current, was defined by higher temperatures and lower zooplankton abundance (F3,223 = 38.6, p < 0.001, r2 = 0.33).