| HUcalc {ecorest} | R Documentation |
Computes Habitat Quality, Quantity, and Units
Description
HUcalc computes habitat units given a set of suitability indices,
a habitat suitability index equation, and habitat quantity.
Usage
HUcalc(SI.out, habitat.quantity, HSIfunc, ...)
Arguments
SI.out |
is a vector of application-specific suitability indices, which can be produced from SIcalc. |
habitat.quantity |
is a numeric of habitat size associated with these suitability indices (i.e., length, area, or volume). |
HSIfunc |
is a function for combination of the suitability indices. |
... |
optional arguments to HSIfunc. |
Value
A vector of habitat quality, habitat quantity, and index units (quantity times quality).
References
US Fish and Wildlife Service. (1980). Habitat as a basis for environmental assessment. Ecological Services Manual, 101.
US Fish and Wildlife Service. (1980). Habitat Evaluation Procedures (HEP). Ecological Services Manual, 102.
US Fish and Wildlife Service. (1981). Standards for the Development of Habitat Suitability Index Models. Ecological Services Manual, 103.
Examples
#Summarize habitat outcomes based on a vector of two suitability indices
#using multiple combination equations.
HUcalc(c(0.1,1), 100, HSIarimean)
HUcalc(c(0.1,1), 100, HSIgeomean)
HUcalc(c(0.1,1), 100, HSImin)
HUcalc(c(0.1,1), 100, HSIwarimean, c(1,0))
HUcalc(c(0.1,1), 100, HSIwarimean, c(0,1))
#HSIfunc can also represent functions outside of the ecorest package
HUcalc(c(0.1,1), 100, mean)
HUcalc(c(0.1,1), 100, max)