OncyT ia correct.

The 50% exploitation is for the wild ESA listed Chinook and comes from the Co-managers Puget Sound Chinook management plan (latest edition is from 2010) and federally approved. The 50% exploitation includes all fishing mortality - directed and incidental. Those allowable impacts were determined after detailed modeling such that fishing at or below those levels would not significantly increase the likelihood of extinct over the next century. A couple assumptions were used; one that habitat would not become worst and two that recent low marine survivals would continue.

The rub is what fisheries will be constrained to reduce the over all impacts down to 50%. The tribes want a sharing of those reduction even though account for the majority of the total impacts.