Production of Juvenile Atlantic Salmon (Salmo salar) in Two Acidic Rivers of Nova Scotia

摘要: Densities, growth, and production of juvenile Atlantic salmon (Salmo salar) were estimated at sites in two acidic rivers different pH, the Westfield North rivers, Nova Scotia, Canada, from 1982 to 1984. Annual was significantly lower more River (< 0.4 g∙m−2∙yr−1 pH 4.7–5.4) than (1.4 g∙m−2∙yr−1 5.6–6.3). Low rates river attributable densities poorer survival juveniles levels. parr a function high initial mortality postemergent fry, during periods minima such as over winter. Marking recapture information trapping weir for counting migrating fishes indicated that there little emigration other spring when some movements occurred preceding smoltification. Average potential yield 2-yr smolts 0.8 smolt/100 m2 Ri...