Mean in-field zooplankton density m-3, mean percent cladocera from in-field zooplankton samples, and mean percent cladocera in salmon diets.

Mean in-field zooplankton density m-3, mean percent cladocera from in-field zooplankton samples, and mean percent cladocera in salmon diets.样地内浮游动物平均密度（单位：每立方米，m⁻³）、样地采集的浮游动物样本中枝角类(Cladocera)的平均占比，以及鲑鱼日粮中枝角类的平均占比。