SP_production {SAMtool} | R Documentation |
For surplus production models, this function returns the production exponent n corresponding to BMSY/K (Fletcher 1978).
SP_production(depletion, figure = TRUE)
depletion |
The hypothesized depletion that produces MSY. |
figure |
Local, plots figure of production function as a function of depletion (B/K) |
The production function exponent n (numeric).
May be useful for parameterizing n
in SP and SP_SS.
Q. Huynh
Fletcher, R. I. 1978. On the restructuring of the Pella-Tomlinson system. Fishery Bulletin 76:515:521.
SP_production(0.5)
SP_production(0.5)