Table 1.
Default settings for demographic and fleet parameters. The coefficient of variation (cv) of model parameters is reported in parentheses where applicable. The coefficient of variation of the unfished population corresponding to these model parameters is reported in electronic supplementary material, table S1. Electronic supplementary material, figure S3 illustrates a realization of population dynamics over a 100-year period.
| name | stage 1 | stage 2 | stage 3 | |
|---|---|---|---|---|
| (a) stage-dependent parameters | ||||
| σj | annual survival in stage j | 0.5 (cv = 20.7%) | 0.7 (cv = 10.6%) | 0.9 (cv = 3.1%) |
| γj | transition probability from stage j to stage j + 1 | 0.1 | 0.01 | — |
| ϕj | per capita fecundity | 0 | 104 (cv = 30%) | 105 (cv = 30%) |
| rdj | range of dispersal of 90% of individuals in stage j | 1 km 90% retention rate (cv = 30%) | 1 km 90% retention rate (cv = 30%) | 1 km 90% retention rate (cv = 30%) |
| wj | body-mass (prices) [arbitrary units] | 0.2 | 1 | 5 |
| qj | catchability (effort−1 y−1) | 0 | 0.1 (cv = 30%) | 0.15 (cv = 30%) |
| (b) other model parameters | ||||
| σ0max | larval survival at low density | 1.986 × 10−3 (cv = 30%) | ||
| δ | strength of density-dependence in larval settlement | 3.817 × 10−6 (cv = 30%) | ||
| GCR | Goodyear compensation ratio | 10 | ||
| rdL | range of dispersal of 90% of larvae | between 5 and 100 km (cv = 30%) | ||
| φ | scaling parameter proportional to effort aggregation in the areas of highest biomass | 2 (cv = 30%) | ||
| TAC | total allowable catch (eqn S9 in the electronic supplementary material) | = (1 − e−fMSY) × biomass in stage 2 and 3 (with a 30% cv in stock assessment) | ||
| S | number of contiguous patches of suitable habitat along the coastline (each patch 1 km long) | 100 | ||