Parry HR, Sadler RJ, Kriticos DJ (2013) Practical guidelines for modelling post-entry spread in invasion ecology. In: Kriticos DJ, Venette RC (Eds) Advancing risk assessment models to address climate change, economics and uncertainty. NeoBiota 18: 41–66. doi: 10.3897/neobiota.18.4305
If you follow the link above it takes you to the paper on the journal's website, and from there you can download the pdf. This paper has evolved over the past couple of years out of discussion with the co-authors and other members of the International Pest Risk Mapping Workgroup, so quite a bit of discussion and thought went into it over time. We try to give something of a 'roadmap' for modellers faced with a wide range of pest risk management questions relating to post-entry spread in invasion ecology, taking into account considerations such as spatial and temporal scales but also constraints such as, inevitably, time and money. In the end I hope we have come up with something that is useful!
The following diagram (figure 4 in the paper) is a good summary of some of the paper's concepts, but requires a fair bit of explanation that can be found in the paper, along with a lot more exciting stuff, like dealing with uncertainty!
