uhc_issf_locs: Simulated iSSF location data for demonstrating UHC plots

In amt: Animal Movement Tools

Simulated iSSF location data for demonstrating UHC plots

Description

Simulated iSSF location data for demonstrating UHC plots

Usage

uhc_issf_locs

Format

A data.frame with 371 rows and 3 variables:

x

x-coordinate in UTM Zone 12 (EPSG: 32612)

y

Y-coordinate in UTM Zone 12 (EPSG: 32612)

t

timestamp of location (timezone "US/Mountain")

These data were simulated assuming an movement model, i.e., iSSA.

True movement-free habitat selection parameter values are:

• forage = log(8)/500 (resource)

• temp^2 = -1 * log(8)/36 (condition; quadratic term)

• temp = (log(8)/36) * 26 (condition; linear term)

• pred = log(0.2)/5 (risk)

• cover == "forest" = log(2) (grassland is intercept)

• cover == "wetland" = log(1/2) (grassland is intercept)

• dist_to_cent = -1 * log(10)/500 (keeps trajectory away from boundary)

Note: temp is modeled as a quadratic term, with the strongest selection occurring at 13 °C and all other temperatures less selected.

Note: dist_to_water and rand have no real effect on our animal's selection and are included for demonstration purposes.

True selection-free movement distributions are:

• Step length: gamma(shape = 3, scale = 25)

• Turn angle: vonMises(mu = 0, kappa = 0.5)

amt documentation built on June 25, 2024, 1:14 a.m.