DFO has released a memorandum that reports on the titled subject.
This memo compiles information to support Southern BC Chinook harvest planning and specifically
fisheries that impact Fraser River Chinook Managment Units (MUs).
There are many measures and estimates of salmon mortality and salmon escapement. Some discussion of how to arrive at useful conclusions with insufficient data. Certainly an important DFO management objective was achieved.
The management objective to shift the harvest distribution of Summer 41 from marine, particularly Area F troll, fisheries to Fraser River FN FSC fisheries appears to have been achieved, as there was a large shift in the proportion of Summer 41 Chinook caught by each fishing group and a greater proportion of the overall Fraser Chinook catch was comprised of Summer 41 Chinook; approximately 60% of the harvest of this MU occurred in First Nations FSC fisheries in the Fraser River in 2020 (compared to 18% in the base period). In addition, the Lower Shuswap escapement objective was met in both 2019 and 2020.
A recreational fisherperson will recognize the commercial Area F troll fishery referenced, and remember that DFO shut down some commercial salmon fisheries this past summer. Presumably in aid of the stated management objective.