opp_sites: Delineate sites of importance for OPP emergency response

In popovs/OPPtools: This package contains tools and templates to analyze seabird tracking data

Delineate sites of importance for OPP emergency response

Description

This function generates key biological areas that are usable in the context of OPP risk mitigation. By default, the function will delineate areas that are used by at least 10%, 50%, 75%, and if possible, 95% of the population. If a population number is provided, it will also calculate an estimate of the number of individuals using a given area. By providing a list of percentile thresholds, the user can also specify their own custom percentile threshold values.

Usage

opp_sites(
  kernels,
  repr,
  population = NA,
  level_ud = 95,
  thresh = c(10, 50, 75, 95),
  metadata = list(),
  save_shp = FALSE,
  out_name = NA,
  out_dir = NA
)

Arguments

kernels	Output of class estUDm from either opp_kernels, opp_bbmm, or adehabitatHR::kernelUD.
repr	Numeric (0-100). Representativeness of the sample, derived from track2KBA::repAssess.
population	Numeric (optional). Total number of individuals at a given study site. Used to calculate the number of individuals that use a given polygon area.
level_ud	Numeric (0-100). Utilization distribution level to extract from kernels prior to calculating high-use areas. Defaults to 95.
thresh	List of percentile threshold values to calculate high use areas. By default, the function will calculate polygons for the 10th, 50th, 75th, and 95th percentile use areas (c(10, 50, 75, 95))
metadata	List of additional metadata you wish to append to the output. E.g., c("smoother" = "href", "smoother_km" = 3.5)
save_shp	Logical (T/F). Should the output be saved as a shapefile (.shp)?
out_name	Character string. Filename for output shapefile. Defaults to 'opp_sites' if none provided and save_shp = TRUE.
out_dir	Character string. Output directory for saved shapefile, relative to the current working directory. Defaults to the current working directory if no value provided.

popovs/OPPtools documentation built on July 8, 2023, 2:29 a.m.