Population status of the native Cottus gobio after removal of the alien Salmo trutta: a case-study in two Mediterranean streams (Italy) | Knowledge and Management of Aquatic Ecosystems

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Fig. 3

Age-based demographic trend for bullhead broken down before (black histograms) and after (grey histograms) trout removal performed separately for each sampling site: a) Cesano creek; b) Gorga creek.

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