Builds the FLife equilibrium (lhEql, ages 0:tmax, plus group tmax,
constant M), applies the joint selectivity-at-age (fleet selectivities
weighted by relative catchability, FLRef::combine_sel_age()) and
rescales virgin biomass so that equilibrium MSY equals sp$msy (two
passes of FLRef::updsr()).
Arguments
- sp
a
species().- sels
optional result of
species_sel().