Fig. 4

Pacific herring seasonal movement probabilities between Hinchinbrook and the Sound (\(\psi _{j}^{54}\)) and between Hinchinbrook and the Gulf (\(\psi _{j}^{58}\)). Probabilities are based on weekly time periods. The Hinchinbrook to Sound and the Hinchinbrook to Gulf movement probabilities oscillate by season. During the spring and summer season (April-August) fish are more likely to move from the Sound to the Gulf than from the Gulf to the Sound. During the fall and winter season (September-March) the trend reverses