adjusted_FQI {fqacalc}

Calculate Adjusted FQI

Description

adjusted_FQI calculates the Adjusted Floristic Quality Index. Adjusted FQI is found by multiplying 100 by the Native Mean C divided by 10 and then multiplied by the square root of Native Species Richness over Total Species Richness.

Usage

adjusted_FQI(x, key = "name", db)

Arguments

x

A data frame containing a list of plant species. This data frame must have one of the following columns: name or acronym. For cover-weighted or relative functions, this data frame must also have a column called cover containing cover values and ideally a column containing plot IDs.

key

A character string representing the column that will be used to join the input data frame x with the regional FQA database. If a value is not specified, the default is "name". "name" and "acronym" are the only acceptable values for key.

db

A character string representing the regional FQA database to use. See db_names for a list of potential values and the fqadata R package where the databases are hosted.

Value

A non-negative integer

Examples

plant_list <- crooked_island
adjusted_FQI(x = plant_list, key = "acronym", db = "michigan_2014")