Fig. 7

Marginal effects of (A) dispersal distance and (B) parr origin river kilometer on post-dispersal parr fork length (e.g., length-at-capture) after accounting for effects of date of sampling, capture location temperature and capture location density (see Additional file 1: Fig. S8 for covariate effects). Model selection indicated that the relationship between dispersal distance and fork length was dependent on whether parr dispersed within the mainstem (red) or to tributaries (blue) and whether parr dispersed downstream (solid lines) or upstream (dashed lines). Longitudinal patterns of parr fork length (B) are inversely related to estimated emergence timing, which was progressively earlier upstream of rkm 100 (Additional file 1: Fig. S2)