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Ecological Processes
Fig. 7 | Ecological Processes

Fig. 7

From: Assessing the migratory histories, trophic positions, and conditions of lake sturgeon in the St. Croix and Mississippi Rivers using fin ray microchemistry, stable isotopes, and fatty acid profiles

Fig. 7

Isotopic composition (δ15N and δ13C) of lake sturgeon captured in the Mississippi River near lock and dam 2 (D2) and in the St. Croix River near the Xcel Energy Plant (XL), Kinnickinnic narrows (KN), and near Prescott, Wisconsin, USA (PC). Mean values ± 95% confidence intervals of δ15N (‰) and δ13C (‰) in Amblema plicata (circle symbols), which served as the baseline primary consumer used to estimate the trophic position of the lake sturgeon. Values are not adjusted for trophic shift

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