A tool for simulating a variety of spatial individualbased models of plantplant interactions. Usercreated models can include any number of species, each of which can be structured in any number of lifestages, where each lifestage has specific death, growth and reproduction rates, as well as specific interaction radius, dispersal radius, and interaction effects over each other species/lifestage. Life stages were modeled so as to be a stochastic, individualbased version of differential Matrix Population Models (Caswell 2001, ISBN:0878930965). Interactions can be positive (facilitation) or negative (competition) and can affect death rates, growth rates or reproduction rates. Interactions from multiple numbers are additive, so as to best approximate classic population dynamics models such as the logistic model and LotkaVolterra model (Britton 2004, ISBN:9781852335366). All models work in continuous time, implemented as an optimized version of the Gillespie algorithm (Gillespie 1976 <doi:10.1016/00219991(76)900413>) for independent exponential times, and continuous space.
Package details 


Author  Mali Salles [aut, cre], Andre Chalom [aut], Alexandre Adalardo [aut], Camila Castanho [ctb] 
Maintainer  Mali Salles <marinacs@gmail.com> 
License  GPL2 
Version  0.5.2 
URL  https://github.com/Lobz/facilitation 
Package repository  View on CRAN 
Installation 
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