Improving the gnomonic approach with the gnomonicM R-package to estimate natural mortality throughout different life stages.

ABSTRACT: Natural mortality (M) is defined as the rate of loss that occurs in a fish stock due to natural (non-fishing) causes and can be influenced by density-dependent or density-independent factors. Different methods have been used to estimate M, one of these is the gnomonic approach. This method estimates M rates by dividing the life cycle of a species into subunits of time that increase as a constant proportion of the time elapsed from birth up to the initiation of each subdivision. In this study, an improved gnomonic approach is proposed to estimate natural mortality throughout different life stages in marine stocks using the gnomonicM package written in R software. This package was built to require data about (i) the number of gnomonic intervals, (ii) egg stage dur

SUBMITTER: Torrejon-Magallanes J 

PROVIDER: S-EPMC8061571 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature