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Fig. 8 | BMC Ecology and Evolution

Fig. 8

From: Balancing risks and rewards of alternate strategies in the seaward extent, duration and timing of fjord use in contemporary anadromy of brown trout (Salmo trutta)

Fig. 8

Simulated trajectories of habitat zone use (depicted by colour) for 1000 individual brown trout smolts (a) and veteran migrants (c) from each study river. Estimates of the maximum zone specific survival rate (\({S}_{maxZ}\)) of smolts (b) and veteran migrants (d) presented as the fraction surviving (\({S}_{maxZ}= \frac{{N}_{Surv}}{{N}_{Start}}\)), dependent upon selection of an individual’s maximum seaward migration distance (fjord habitat zone: inner-, mid- or outer-fjord) and their river of origin. Trajectories represent a six-month period for smolts (WoY 13 – 40), and an annual period for veteran migrants (WoY 1 – 52), with separate simulations run for 2013 – 2015 conditions where panels (c) & (d) present mean values across years (see Figure S8 for plots separated by year). Shaded regions on panels (a) & (c) represent 95% CI, resulting from 100 iterations. Boxplots (panels (b) & (d)) present simulated mean values and 95% CI resulting from 100 iterations. Table 4a and b state mean values of \({S}_{maxZ}\) for each population and life-stage of simulated brown trout

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BMC Ecology and Evolution

ISSN: 2730-7182

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