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Convert instantaneous fishing mortality rate (F) to annual exploitation rate (mu) and vice versa for Type I and II fisheries.

convmort(value = NULL, fromto = 1, type = 2, M = NULL)

mortality rate

conversion direction: 1=from F to mu; 2 = from mu to F. Default is 1.

type of fishery following Ricker (1975): 1=Type I; 2=Type II. Default is 2.

natural mortality rate (for Type II fishery)

A vector of the same length as value containing the converted values.

value

Equations 1.6 and 1.11 of Ricker (1975) are used.

Ricker, W. E. 1975. Computation and interpretation of biological statistics of fish populations. Bull. Fish. Res. Board. Can. 191: 382 p.

# NOT RUN { convmort(0.3,fromto=1,type=2,M=0.15) # }

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