Description Usage Arguments Details Value Author(s)
calc_ref
Calculates derived spawning potential ratio: lifetime total egg production in fished:unfished states
1 2 3 |
ages |
vector of ages |
Mat_a |
from report file / true file for simulation |
W_a |
from report file / true file for simulation |
M |
from report file / true file for simulation |
F |
proposed F to calculate reference point, if S_fa has more than 1 fleet, requires F as a vector, one for each fleet |
S_fa |
selectivity by fleet by age |
ref |
FALSE outputs SPR, ref= a value between 0 and 1 can be used with uniroot to find the F at which SPR=ref |
fleet_prop |
fleet proportions |
type |
option spawning biomass per recruit (SPR) or biomass per recruit ("Depletion") |
Use this function with uniroot to find the value of F that results in SPR matching the specified reference value (e.g. 0.30 to find F30)
List, a tagged list of potentially useful benchmarks
M.B. Rudd
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