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Maps showing the potential distribution for Idotea balthica,I. chelipes and I. granulosa in the Baltic Sea. The colour scale in the potential distribution (PD) maps indicates habitat suitability, ranging from 0 (unsuitable, in white) to 254 (maximum suitability, in dark red). On the difference maps (2050–present) colours from green to red indicate an increase in habitat suitability and those from green to blue indicate a decrease.
