Description Usage Arguments Value

View source: R/population.age.model.r

Population Dynamics Model with Age Classes for an insect Exactly the same model as population.age.model, but written as a matrix computation. It's possible for this model. It's really more efficient and reduce computer time by 6! 7 states variables E : egg stage. homogenous population (density) (number per ha) L1 : larvae1 stage. homogenous population (density) (number per ha) L2 : larvae2 stage. homogenous population (density) (number per ha) L3 : larvae3 stage. homogenous population (density) (number per ha) L4 : larvae4 stage. homogenous population (density) (number per ha) P : pupae stage. homogenous population (density) (number per ha) A : adult stage. homogenous population (density) (number per ha)

1 2 3 4 5 | ```
population.age.matrix.model(rb = 3.5, mE = 0.017,
rE = 0.172, m1 = 0.06, r12 = 0.217, m2 = 0.032,
r23 = 0.313, m3 = 0.022, r34 = 0.222, m4 = 0.02,
r4P = 0.135, mP = 0.02, rPA = 0.099, mA = 0.027,
iA = 0, duration = 100, dt = 1)
``` |

`rb` |
: eggs laid per adult per unit area (day-1) |

`rE` |
: eggs hatch (day-1) |

`r12` |
: relative rate L1->L2 (day-1) |

`r23` |
: relative rate L2->L3 (day-1) |

`r34` |
: relative rate L3->L4 (day-1) |

`r4P` |
: relative rate L4->P (day-1) |

`rPA` |
: relative rate P->A (day-1) |

`mE` |
: relative mortality rate of egg (day-1) |

`m1` |
: relative mortality rate of larvae L1 (day-1) |

`m2` |
: relative mortality rate of larvae L2 (day-1) |

`m3` |
: relative mortality rate of larvae L3 (day-1) |

`m4` |
: relative mortality rate of larvae L4 (day-1) |

`mP` |
: relative mortality rate of purpae (day-1) |

`mA` |
: relative mortality rate of adult L1 (day-1) |

`iA` |
: input rate of adult (unit.day-1) |

`duration` |
: simulation duration |

`dt` |
: time step for integration |

data.frame with values for state variables for each time step.

ZeBook documentation built on May 29, 2017, 5:14 p.m.

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