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. 2013 Aug 13;8(8):e69576. doi: 10.1371/journal.pone.0069576

Figure 4. Allelic richness (average across loci) for different geographical groups of Gammarus fossarum.

Figure 4

a) Difference between geographical groups of type A populations (Thur: east; Limmat: central). See Fig. 1 for location of subdrainages. The P-value (Mann-Whitney U test) is indicated. b) Difference among three geographical groups of type B populations. See Fig. 2 for location of geographical regions. “Rhone (France, Jura)” includes all Rhone populations except those in the Lake Geneva region. “Rhine” includes all Rhine type B populations except the genetically distinct cluster B2 (see Figure 2). P-values (Tamhane's T2 multiple comparisons test) are indicated.