Fig. 1


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Number of aquatic and terrestrial prey (adjusted mean ± s.e.) found in the stomachs of sympatric and allopatric populations of (a) brown trout and (b) brook trout from the streams Malá Jeřice, Černá Nisa, and Malý Štolpich, located in Jizera Mts., Czech Republic. Brackets with asterisks indicate significant difference between groups (P < 0.05; ⁎⁎P < 0.01).

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