FAVORABLE FORAGING LOCATIONS FOR YOUNG ATLANTIC SALMON: APPLICATION TO HABITAT AND POPULATION RESTORATION

摘要: Declines in the populations of salmonid fishes have generated major interest conservation and restoration wild river habitats. We used a foraging-based model, combined with field observations surveys, to predict individual habitat use, assess effects stream conditions management practices on potential for reestablishing Atlantic salmon, Salmo salar. Using model based simple trade-off between increasing prey encounter rate decreasing salmon capture success current velocity, we predicted favorable foraging locations their first (age-0) spring summer. tested, six streams, whether (1) preferred (=microhabitats) that were yield high consumption rates, (2) growth survival was greater streams proportion preferred, profitable, microhabitats, (3) remediation (introduction large in-stream structures such as woody d...