stage_specific_fertility: Calculate stage-specific fertility Based on Bill Morris'...
In camposfa/plhdbR: Tools for working with the Primate Life History Database

Description Usage Arguments Value Examples

Calculate stage-specific fertility Based on Bill Morris' methods for calculating vital rates, available on the Wiki.

1 2	stage_specific_fertility(b, f, adult_definition = "median", annual = TRUE, census_start_month = NULL, filter_fertile = FALSE)

`b`	Name of the tbl_df containing biography data generated by the function read_bio_table.
`f`	Name of the tbl_df containing fertility data generated by the function read_fert_table.
`adult_definition`	Character. Either "median" or "minimum". Determines how females should be defined: minimum age at first birth or median age at first birth.
`annual`	Logical. Should the fertility be calculated for each year separately?
`census_start_month`	Numeric vector of length equal to number of studies.
`filter_fertile`	Logical. If set to true, only females that are likely to be fertile are retained.

Output is a tbl_df that includes the per capita fertility for each life-history stage for each study species. Life history stages include newborns, juveniles, and adults; these are defined as in Morris et al. 2011. Also included are the number of animals and the "female-years" of observation on which the calculation is based.