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Fig. 3 | BMC Ecology

Fig. 3

From: Spatial patterns of genetic diversity, community composition and occurrence of native and non-native amphipods in naturally replicated tributary streams

Fig. 3

Percentage of sites occupied by each of the five amphipod species across the 13 tributary streams of Lake Constance in 2012 (a) and 2013 (b). Percentage of sites occupied is given for each species relative to the sampling sites’ upstream distance from lake (stream outlet). Gammarus roeseli and Dikerogammarus villosus are non-native species, while the three other species are natives

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