Figure 1.

Study locations. (a) A map of the study area; dots are locations surveyed for Fucus vesiculosus during 2009-2011, presence or absence of species is marked in green and red, respectively; the asterisk (*) depicts the species historical southern distribution limit; names of population samples used for genetic analyses are reported, their codes are given in brackets and those in bold represent extinct populations; (b) a map depicting the complete northeastern Atlantic distribution of F. vesiculosus.

Nicastro et al. BMC Biology 2013 11:6   doi:10.1186/1741-7007-11-6
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