I'm trying to produce constant catch projection scenarios using the
SS forecast system. I have attached my forecast file, but in summary I
have included a maximum catch series for each fleet, and input the
quarterly catch by fleet. The forecast is set to the biomass target
and there is no control rule. In the example attached the maximum
annual catch should total 450 mt, and the total annual catch by
fleet/quarter should be 438mt. However, the SS output is producing
annual catch during the forecast years of ~462mt.
Additionally, I would like to set catch to the biomass target or near
the biomass target (5438 mt is Btgt Catch), but the output only
produces catches around 3500mt per year.
Can someone help explain:
1. Is it possible to produce constant
catch scenarios in SS forecast as opposed to constant F?
2. Why is Forecast catch (i.e. Forecatch in the report file) above
the maximum catch input?
3. Do I need both the catch by fleet/year/quarter and the max annual
catch inputs?
4. Am I missing any other settings that might be causing problems?
Thank you!
Michelle Sculley