Description Usage Arguments Note
The F-based rule is the conventional ICES decision rule. Here it is implemented such that the TAC next year is calculated from the true stock in numbers based on a fishing mortality that includes observation error.
If the Btrigger is set in the rule (Btrigger > 0) then linear reductions of fishing mortality is done relative to observed spawning stock biomass (i.e. that includes observation errrors).
1 | hcr_management_fmort(y, h, hrate, ssb, ctr)
|
y |
XXX |
h |
XXX |
hrate |
Harvest rate - with error |
ssb |
Spawning stock biomass - with error |
ctr |
Control file |
Need to check is ssb-hat is calculated according to the correct delay specification.
To do: Modify function so that buffer is not active below Btrigger and also include a TAC-constraint, either the Icelandic type or the convention percentage contraint used in EU stocks.
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