landscape: Create a landscape object.

Description Usage Arguments Details Value Examples

Description

A landscape object is used to store spatially-explicit information on population, habitat suitability, carrying_capacity and miscellaneous landscape information.

Usage

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landscape(population, suitability = NULL, carrying_capacity = NULL, ...)

Arguments

population

a raster stack (grid cell-based) with one layer for each life stage.

suitability

an optional raster layer or stack (multiple layers) containing habitat suitability values for all cells in a landscape. Note, using a raster stack assumes that the user has provided a layer for each intended timestep in a simulation.

carrying_capacity

an optional raster layer specifying carrying capacity values for all cells in a landscape or a function defining how carrying capacity is determined by habitat suitability.

...

named raster objects representing different aspects of the landscape used to modify the landscape object in a simulation. Note, this is intended to store objects that are accessed by dynamic functions and used to modify the landscape in a simulation. Also, further arguments passed to or from other methods.

Details

A landscape object is modified in each timestep of a simulation. During a simulation, population, habitat suitability or carrying capacity in a landscape object are changed based on dynamic functions selected or created by the user.

Value

An object of class landscape

Examples

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# Example of setting up a landscape object.

## Not run: 
ls <- landscape(population = egk_pop, suitability = egk_hab, carrying_capacity = egk_k)

pd <- population_dynamics(change = growth(egk_mat))

simulation(landscape = ls, population_dynamics = pd, habitat_dynamics = NULL, timesteps = 20)

## End(Not run)

steps documentation built on March 3, 2021, 5:06 p.m.