Description Usage Arguments Value References
Calculates the fishing mortality for each species in each size class using a logistic selectivity curve.
1 2 | calc_F(nSize, nSpecies, mBound, lBound, Ffull, Falpha, FL50, scLinf,
scLinfMat, phiMin, parameterValues)
|
nSize |
Number of size class intervals species can grow through |
nSpecies |
Number of species in the model |
mBound |
Vector. Mid point of each size class interval |
lBound |
Vector. Lower bound of each size class interval |
Ffull |
Scalar. Fishing mortaliy rate for a fully recruited fish |
Falpha |
Scalar. Number of years to simulate. |
FL50 |
Scalar. The length at which 50 % selection by the fishery occurs. |
scLinf |
Vector. The size class at which each species reaches L_inf (maximum length) |
scLinfMat |
Binary matrix indicating which size classes each species occupies |
phiMin |
Scalar. Model time step (years). See |
parameterValues |
Matrix (nSize x nSpecies). See |
A matrix is returned
F |
A matrix (size nSize x nSpecies) of F (fishing mortality) values. Note: F = 0 for size classes in which species do not grow (based on von Bertalanfy growth curve) |
Hall et al. (2006). A length-based multispecies model for evaluating community responses to fishing. Can. J. Fish. Aquat. Sci. 63:1344-1359.
Rochet et al. (2011). Does selective fishing conserve community biodiversity? Prediction from a length-based multispecies model. Can. J. Fish. Aquat. Sci. 68:469-486
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