getRecruits {plantTracker}

Calculates the number of recruits of each species per year in each quadrat

Description

This function calculates the number of new recruits of each species in each quadrat in each year. The input data must already contain a column indicating whether each observation is classified as a recruit or not. This recruit status can be generated from the trackSpp function in plantTracker, or can be information that was collected in the field. This function includes an option that determines whether each ramet of a clonal species is considered an individual recruit, or if the entire genet is considered a single recruit.

Usage

getRecruits(
  dat,
  byGenet = TRUE,
  species = "Species",
  quad = "Quad",
  site = "Site",
  year = "Year",
  trackID = "trackID",
  recruit = "recruit",
  ...
)

Arguments

dat

An sf data.frame in which each row represents a unique polygon (either a genet or a ramet) in a unique site/quadrat/year combination. A data.frame returned by trackSpp can be put directly into this function. 'dat' must have columns that contain...

• a unique identification for each research site in character format with no NAs (the default column name is "Site")

• species name in character format with no NAs (the default column name is "Species")

• unique quadrat identifier in character format with no NAs (the default column name is "Quad")

• year of data collection in integer format with no NAs (the default column name is "Year")

• a unique identifier for each genet in character format with no NAs (the default column name is "trackID")

• an s.f 'geometry' column that contains a polygon or multipolygon data type for each individual observation (the default column name is "geometry")

byGenet

A logical argument. TRUE indicates that a new genet will be considered as only one recruit, even if it consists of multiple ramets. FALSE indicates that each new ramet will be considered as a new recruit, even if other ramets of the same genet were present in previous years.

species

An optional character string argument. Indicates the name of the column in 'dat' that contains species name data. It is unnecessary to include a value for this argument if the column name is "Species" (default value is 'Species').

quad

An optional character string argument. Indicates the name of the column in 'dat' that contains quadrat name data. It is unnecessary to include a value for this argument if the column name is "Quad" (default is 'Quad').

site

An optional character string argument. Indicates the name of the column in 'dat' that contains site name data. It is unnecessary to include a value for this argument if the column name is "Site" (default value is 'Site').

year

An optional character string argument. Indicates the name of the column in 'dat' that contains data for year of sampling. It is unnecessary to include a value for this argument if the column name is "Year" (default is 'Year').

trackID

An optional character string argument. Indicates the name of the column in 'dat' that contains unique identifiers for each genet. It is unnecessary to include a value for this argument if the column name is "trackID" (default is 'trackID')

recruit

An optional character string argument. Indicates the name of the column in 'dat' that contains information indicating whether or not this row represents data for a recruit. It is unnecessary to include a value for this argument if the column name is "recruit" (default is "recruit").

...

Other arguments passed on to methods. Not currently used.

Value

This function returns a table with columns for site, quadrat, species name, year, and number of recruits.

This function returns a data frame with the columns 'Site', 'Quad', 'speciesName', 'Year', and 'recruits'. The 'recruits' column contains a count of the number of individuals of the species and in the site, quadrat, and year indicated in the other columns of the data frame.

Examples

dat <- grasslandData[grasslandData$Site == c("AZ") &
 grasslandData$Species %in% c("Bouteloua rothrockii",
 "Calliandra eriophylla") &
 grasslandData$Year %in% c(1922:1925),]
names(dat)[1] <- "speciesName"
inv <- grasslandInventory[unique(dat$Quad)]
outDat <- trackSpp(dat = dat,
 inv = inv,
 dorm = 1,
 buff = .05,
 buffGenet = 0.005,
 clonal = data.frame("Species" = unique(dat$speciesName),
 "clonal" = c(TRUE,FALSE)),
 species = "speciesName",
 aggByGenet = TRUE
 )
 getRecruits(dat = outDat,
 byGenet = TRUE,
 species = "speciesName"
 )