# The temporal model of succession in the Swiss National Park

### Description

A dynamic model of succession in the Swiss Nationl Park using differential equations and numerial integration. 6 species guilds are considered. Typical simulation time is around 500yr.

### Usage

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### Arguments

`trange` |
Time range of simulation in yr |

`tsl` |
Time step length used for integration (no. of yr) |

`x6` |
Initial conditions of 6 guilds involved, cover percentage |

`r6` |
Growth rates of 6 guilds involved, increase in cover percentage per yr |

`x` |
An object of class "SNPtm" |

`...` |
Parameter out.seq, the plotting interval |

### Value

An object of class "SNPtm" with at least the following items:

`n.time.steps ` |
Time step range covered by the model |

`time.step.length ` |
Time step length used for integration, no. of yr |

`time vector ` |
All time steps described by the results |

`veg.types ` |
The names of the vegetation types, i.e., the species |

`growth.rates ` |
The growth rates given upon input |

`initial.cond ` |
Initial conditions of 6 guilds involved, cover percentage |

`sim.data` |
Simulated scores of all species (guilds) during simulation time |

### Author(s)

Otto Wildi

### References

Wildi, O. 2002. Modeling succession from pasture to forest in time and space. Community Ecology 3: 181–189.

Wildi, O. 2013. Data Analysis in Vegetation Ecology. 2nd ed. Wiley-Blackwell, Chichester.

### Examples

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