ricker_escapement {metafolio}

Assign a salmon escapement target based on a Ricker curve

Description

Sets escapement according to Hilborn and Walters (1992) p272, Table 7.2. Smsy = b(0.5 - 0.07*a).

Usage

ricker_escapement(a, b)

Arguments

a

Ricker productivity parameter.

b

Ricker density-dependent parameter.

References

Hilborn, R.W. and Walters, C. 1992. Quantitative fisheries stock assessment: Choice, dynamics, and uncertainty. Chapman and Hall, London.

Examples

ricker_escapement(1.1, 1000)