I am trying to find a way to develop an index for harvest of mammals and I came across a paper which talks about 'popharvest' package but it is specifically mentioned for birds. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8668730/ . Is there a possibility of using this package for mammals too? Any suggestion is appreciated.
The only constraint on the use of the methodology that I could see was at Eq. (4) where a default value of 1 for S_j for the average annual survival for birds aged 1 year to α is provided, subject to an optional (fixed) argument surv.j. Whether data or the literature provides a suitable basis for the selection of that value is something I can't comment on.