Size‐dependent survival of brook trout Salvelinus fontinalis in summer: effects of water temperature and stream flow

摘要: A 5 year individual-based data set was used to estimate size-specific survival rates in a wild brook trout Salvelinus fontinalis population stream network encompassing mainstem and three tributaries (1.5-6 m wetted width), western Massachusetts, U.S.A. The relationships between summer temperature flow metrics derived from continuous monitoring were then tested. Increased temperatures significantly reduced for S. almost all size classes four sites throughout the network. In contrast, extreme low flows of large fish, but only small tributaries, had no significant effects on fish smaller any location. These results provide direct evidence link season-specific environmental factors likely be affected by climate change have important consequences management both habitats populations.