NOAA-NMFS-NWFSC TM-32: Status Review of Chum Salmon

Figure 29. Comparison of summer chum salmon spawner-to-spawner ratios, by year, for four Hood Canal harvest management regions (12A, B, C, and D). Spawner-to-spawner ratio is the number of fish that return to spawn in one year, divided by the number of fish that returned to spawn in the same area four years previously.

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