User prescribed BMSY/B0, M, FMSY/M are used to find B0 and therefore the OFL by back-constructing the stock to match a user specified level of stock depletion (OFL = M * FMSY/M * depletion* B0).
DBSRA(x, Data, reps = 100)A position in a data-limited methods object.
A data-limited methods object.
The number of samples of the TAC (OFL) recommendation.
A vector of TAC (OFL) values.
You specify a range of stock depletion and, given historical catches DB-SRA calculates what unfished biomass must have been to get you here given samples for M, FMSY relative to M and also BMSY relative to Bunfished.
Dick, E.J., MacCall, A.D., 2011. Depletion-Based Stock Reduction Analysis: A catch-based method for determining sustainable yields for data-poor fish stocks. Fish. Res. 110, 331-341.