srrFecBH: Stock-recruitment relationship using fecundity (Beverton-Holt...
In marchtaylor/fishdynr: Fisheries science related population dynamics models

Description Usage Arguments Value References Examples

srrFecBH describes stock-recruitment relationship as the number of recruits resulting from a given number of eggs produced by the population.

1	srrFecBH(srrFecBH_a, srrFecBH_b, neggs)

`srrFecBH_a`	long-term mean survival parameter
`srrFecBH_b`	carrying capacity parameter
`neggs`	number of eggs spawned

Number of recruited individuals

Beverton, R. J., Holt, S. J., 1957. On the dynamics of exploited fish populations

n <- 100
neggs <- seq(0,1e8,,n)
srrFecBH_a = 0.2
srrFecBH_b = 1e7/srrFecBH_a
Nrecr <- srrFecBH(srrFecBH_a, srrFecBH_b, neggs)
plot(neggs, Nrecr, t="l", ylim=c(0, srrFecBH_b*srrFecBH_a))
abline(0, srrFecBH_a, col=8, lty=2)
abline(h=srrFecBH_b*srrFecBH_a, lty=2, col=8)