rfishbase (version 2.1.2)

popgrowth: popgrowth

Description

This table contains information on growth, natural mortality and length at first maturity, which serve as inputs to many fish stock assessment models. The data can also be used to generate empirical relationships between growth parameters or natural mortality estimates, and their correlates (e.g., body shape, temperature, etc.), a line of research that is useful both for stock assessment and for increasing understanding of the evolution of life-history strategies

Usage

popgrowth(species_list = NULL, fields = NULL, query = NULL, limit = 200,
  server = getOption("FISHBASE_API", FISHBASE_API), ...)

Arguments

species_list

A vector of scientific names (each element as "genus species"). If empty, the table will be loaded up to the limit. This makes it possible to load an entire table without knowledge of the species in the table, thus avoiding uneccesary API calls.

fields

a character vector specifying which fields (columns) should be returned. By default, all available columns recognized by the parser are returned. This option can be used to limit the amount of data transfered over the network if only certain columns are needed.

query

a named list specifying specific subsets of fields.

limit

The maximum number of matches from a single API call (e.g. per species). Function will warn if this needs to be increased, otherwise can be left as is.

server

base URL to the FishBase API (by default). For SeaLifeBase, use https://fishbase.ropensci.org/sealifebase

...

additional arguments to httr::GET

Value

a table of population growth information by species; see details

References

http://www.fishbase.org/manual/english/fishbasethe_popgrowth_table.htm

Examples

# NOT RUN {
popgrowth("Oreochromis niloticus")
# }