Abstract
Drivers of the summer-distribution of Northeast Atlantic mackerel (<i>Scomber scombrus</i>) in the Nordic Seas from 2011 to 2017; a Bayesian hierarchical modelling approach
Highlights
Atlantic mackerel (Scomber scombrus) is a widely distributed pelagic fish species, found mainly in the North Atlantic, and in the North Sea, the Baltic, the Mediterranean, and the Black Sea (Collette and Nauen, 1983), with important economic and ecological value (Trenkel et al, 2014)
We highlight drivers that may have regulated the geographical distribution of Northeast Atlantic (NEA) mackerel during summers, from 2011 to 2017, by fitting Bayesian hierarchical spatiotemporal models on data obtained during the International Ecosystem Summer Survey in the Nordic Seas
Fish distribution is influenced by a number of biotic and abiotic factors, the latter including intra- and interspecific mechanisms (e.g. Planque et al, 2011)
Summary
Atlantic mackerel (Scomber scombrus) is a widely distributed pelagic fish species, found mainly in the North Atlantic, and in the North Sea, the Baltic, the Mediterranean, and the Black Sea (Collette and Nauen, 1983), with important economic and ecological value (Trenkel et al, 2014). During summer in the Nordic Seas, mackerel exhibits a thermal preference range from 7C to 15C (Utne et al, 2012; Jansen et al, 2016, Olafsdottir et al, in press), and is well within the thermal tolerance of the species [2–28.5C, as derived from laboratory experiments, Studholme et al, 1999] It is distributed from the surface down to $40 m depth (Nøttestad et al, 2016a), in contrast to herring and blue whiting that are found in deeper waters (herring: 0–400 m, Misund et al, 1997; Nøttestad et al, 2007; Huse et al, 2012; blue whiting: 200– 800 m, Johnsen and Godo, 2007) and in water masses between 2 and 8C (Utne et al, 2012)
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