Estimating Natural Mortality (M)

This tool employs various empirical estimators of natural mortality.

As the user enters values for the below input parameters,

estimates will be displayed in the main panel.


References for each method can be found here

Input parameters



Composite M: method weighting

Allows for weighting of the contribution of each method in the composite M distribution

Values range from 0 to 1. A value of 0 removes the contribution; a value of 1 is full weighting.
Default values are based on redundancies of methods using similar information.
For instance,the four max. age methods are given a weight of 0.25, so all weighted together equal 1

Natural mortality (M) estimates by method

Natural mortality (M) values