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Ecological Processes
Fig. 6 | Ecological Processes

Fig. 6

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. 6

Cluster analysis showing dendrogram classification and associated heatmap for lake sturgeon based on percent fatty acid (FA mg/g dw/Sum of identified FA mg/g dw*100) in anterior dorsal muscle tissue. Lake sturgeon are identified to the right of the heatmap by capture location and total length (mm), revealing three primary clusters: Kinnickinnic narrows (KN) and near the Xcel Energy Plant (XL) in the St. Croix River, and tailwaters below Lock and Dam 2 (D2) of the Mississippi River. The age (y) of the lake sturgeon is provided for reference. Total length (mm), % C, % N, % lipids, and trophic position are indicator variables provided for reference only and were not included in the cluster analysis. Tiles are colored blue and red based on percent fatty acid, which indicates low and high levels, respectively

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