Setting c = 0 is size invariant. The defualt is c = -1 (see Lorenzen et al. 2022,
https://doi.org/10.1016/j.fishres.2022.106327).
Usage
get_M_length(midpoint, a = 60, Ma, Mc = -1)
Arguments
- midpoint
a vector of midpoints for each bin (mm).
- a
the reference size (e.g., a = 60 implies that the parameter estimate of Ma is M at 60 mm).
- Ma
natural mortality at the reference size.
- Mc
natural mortality exponent.