Temporal development of the ratio of the number of Lusitanian species to the number of Boreal species

Figure Created 03 Aug 2022 Published 05 Aug 2022 Last modified 16 Feb 2024
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This page was archived on 16 Feb 2024 with reason: Other (New version data-and-maps/figures/temporal-development-of-the-ratio-1 was published)
The maps show the temporal development of the ratio between the number of warm-favouring (Lusitanian) fish species and the number of cool-favouring (Boreal) fish species by International Council for the Exploration of the Sea (ICES) statistical area in 5-year intervals from 1985 to 2020.

European data


Additional information

Map animation: Temporal development of the Lusitanian/Boreal species ratio by year and statistical rectangle, 1967-2020 — European Environment Agency (


Geographical coverage
Marine Strategy Framework Directive (MSFD) regions and sub-regions: Baltic Sea, Celtic Seas, Greater North Sea.


Geographic coverage

Temporal coverage

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