Kim L Howland Les N. Harris Michael J. Hansen C P Gallagher W J Harford W M Tonn Andrew M. Muir Charles C. Krueger Louise Chavarie 2019 <p><span>A range of organisms, from plankton to fish, commonly shift their habitat distributions horizontally or vertically due to predation risk. Juvenile lake trout,&nbsp;</span><i>Salvelinus namaycush</i><span>, are generally viewed as occupying deep areas of lakes to decrease predation pressure from adults. In contrast, we found that juvenile lake trout from Great Bear Lake, NT, Canada, occupied a variety of habitats and from shallow to deep depths (0–150&nbsp;m), overlapping with adult lake trout. No evidence occurred for a length depth‐based segregation (e.g., ontogenetic shift). Genetic variation was also similar among juveniles in the different depth zones. However, isotopic niches and C:N ratios among juveniles showed some variability in niche widths and positions for individuals caught from the 51–150&nbsp;m zone compared to juvenile individuals caught from 0–20&nbsp;m and 21–50&nbsp;m zones. The uniformly distributed adult lake trout in Great Bear Lake may evenly distribute predation pressure (including cannibalism) across shallow‐ and deep‐water habitats more than in other lakes. As a result, juveniles may respond to differences in foraging opportunities rather than predation risks. Juvenile lake trout did not appear to conform to the general pattern of juveniles seeking a deep‐water refuge to reduce predation risks. In contrast, juvenile lake trout of Great Bear Lake displayed broad resource use across all depths and habitats.</span></p> application/pdf 10.1111/eff.12470 en Wiley Habitat overlap of juvenile and adult lake trout of Great Bear Lake: Evidence for lack of a predation gradient? article