Reliance of brown trout on terrestrial prey varies with season but not fish density 

Milardi M, Thomas SM & Kahilainen KK
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Milardi, M., Thomas, S. M., & Kahilainen, K. K. (2016). Reliance of brown trout on terrestrial prey varies with season but not fish density . Freshwater Biology, 61(7), 1143-1156. https://doi.org/10.1111/fwb.12775