Abstract

1. Arctic charr Salvelinus alpinus underwent phenological and ontogenetic habitat shifts between the epibenthic and pelagic zones in five Norwegian study lakes. Juveniles exploited epibenthic areas until they reached a body length of 13-18 cm when many moved into pelagic waters during summer. 2. Pelagic juvenile Arctic charr had larger age-specific lengths than their epibenthic counterparts, and few juvenile Arctic charr moved from epibenthic to pelagic areas in the presence of large brown trout, the main potential fish predator present

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