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PARAMETERS.md

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List of parameters

Name Meaning Default Note
rdynamics Type of resource dynamics 1 The resource dynamics can be logistic (0) or chemostat-like (1).
replenish Resource growth (logistic) 2375 Growth rate of the resource.
capacity Resource capacity (logistic) 1 Carrying capacity of the resource.
inflow Resource inflow (chemostat) 400 Absolute inflow of the resource.
outflow Resource outflow (chemostat) 100 Relative outflow of the resource.
hsymmetry Habitat symmetry 0 Degree of homogeneity in resource input between habitats (between 0 and 1).
ecosel Trade-off strength 1.8 Utilization trade-off between the two resources.
ecoscale Ecological scale 1 Location of the specialist phenotype in ecological trait space.
demesizes Initial population sizes 100 0 Initial number of individuals in each habitat.
dispersal Dispersal rate 0.01 Probability of dispersal to the other habitat per individual per generation.
birth Baseline birth rate 1 Base number of offspring per female per generation.
survival Survival rate 0.8 Probability of surviving to the next generation.
sexsel Sexual selection coefficient 10 Parameter for the intensity of mate choice.
matingcost Cost of choosiness 0.01 Probability that the mating season ends after examining a male.
ntrials Number of mating trials 100 Number of trials to perform to measure reproductive isolation.
nvertices Numbers of loci 30 30 30 Number of loci coding for each trait. At least 2 for each trait.
nedges Numbers of edges 30 30 30 Number of edges for each trait. Cannot be higher than n * (n - 1) / 2 (complete graph) if n is the number of vertices for a trait. In practice, the preferential attachment algorithm may fail to attach all the requested edges of the network if nedges is close to the maximum possible number of edges. In this case the program will return an error. The number of edges should be at least n-1, which ensures that the network is connected (all the nodes are attached).
nchrom Number of chromosomes 3 Chromosomes all have equal lengths.
mutation Mutation rate 0.001 Probability of mutation per locus.
recombination Recombination rate 3 Rate of the exponential distribution describing the distance between two crossovers.
allfreq Initial allele frequency 0.2 Starting frequency of the 1-allele.
scaleA Scaling for additive effects 1 1 1
scaleD Scaling for dominance 0 0 0
scaleI Scaling for epistasis 0 0 0
scaleE Scaling for environmental effects 0 0 0
skews Network skewness 1 1 1 Skewness of the preferential attachment algorithm for each trait.
effectshape Shape of effet size-distribution 2 Gamma distribution parameter. If the resulting distribution has variance 0, all the loci are assigned effect size 1.
effectscale Scale of effect size-distribution 1 Gamma distribution parameter. If the resulting distribution has variance 0, all the loci are assigned effect size 1.
interactionshape Shape of interaction weight-distribution 5 Gamma distribution parameter. If the resulting distribution has variance 0, all the edges are assigned interaction weight 1.
interactionscale Scale of interaction weight-distribution 1 Gamma distribution parameter. If the resulting distribution has variance 0, all the edges are assigned interaction weight 1.
dominancevar Standard deviation of dominance coefficient-distribution 1 Half-normal distribution parameter. If 0, all the loci are assigned dominance coefficient 1.
tburnin Burn-in duration 0 In number of generations.
tend Simulation time 10 In number of generations (in addition to the burn-in).
tsave Saving frequency 10 In number of generations.
tcomplete Speciation completion time 1000000 Number of generations after which reproductive isolation is imposed by force.
talkative Verbose to screen 1 Yes (1) or no (0).
choosewhattosave Whether to choose which variables to save 0 Yes (1) or no (0).
datsave Whether to allow data recording to files 1 Yes (1) or no (0).
burninsave Whether to save the burn-in 0 Yes (1) or no (0).
gensave Whether genomes should be saved 0 Yes (1) or no (0).
archsave Whether to save architecture 0 Yes (1) or no (0).
archload Whether to load architecture 0 Yes (1) or no (0).
parsave Whether to save parameters 1 Yes (1) or no (0).
logsave Screen output to file 0 Yes (1) or no (0).
seed Random number generator seed Clock-generated