symdyn: Simulate time series for a single species in a single patch

In ecostatscale: Statistical Scaling Functions for Ecological Systems

Simulate time series for a single species in a single patch

Description

Function for simulating dynamics from Eq.1 in the main text.

Usage

symdyn(
  r,
  f,
  d,
  d_sd,
  sf,
  tmax,
  stochd = TRUE,
  stocht = TRUE,
  as.matrix = FALSE,
  oscillate_dist = FALSE
)

Arguments

r	per-capita growth rate (r in Eq.1)
f	the waiting time (or average waiting time) between disturbance events (equal to 1/lambda in Eq.1)
d	mean size of disturbance function (mu in Eq.1)
d_sd	standard deviation of disturbance function (sigma in Eq.1)
sf	waiting time between sampling events
tmax	the time series length to be simulated
stochd	a logical variable, indicating whether disturbance size should be stochastic - otherwise, all disturbances are of magnitude d - defaults to TRUE
stocht	a logical variable, indicating whether waiting time between disturbance events should be stochastic - otherwise, waiting time is always f - defaults to TRUE
as.matrix	indicates whether results should be returned as matrix (potentially faster for some applications) - defaults to FALSE
oscillate_dist	a logical variable indicating whether the sign of the disturbance should oscillate between positive and negative - ignored if stochd==TRUE - defaults to FALSE

Value

a matrix or data.frame with columns for sampling times, abundances, and number of disturbances for each time interval

Examples

# see xt2fun

ecostatscale documentation built on Oct. 23, 2023, 1:06 a.m.