Download Biosecurity Surveillance: Quantitative Approaches by Frith Jarrad, Samantha Low-Choy, Kerrie Mengersen PDF

By Frith Jarrad, Samantha Low-Choy, Kerrie Mengersen

Biosecurity Surveillance offers the basis and ideas at the back of surveillance layout, with examples of tools and instruments created to accommodate surveillance challenges.

It comprises aiding case reports and present instructions in examine, it covers evidence-based methods to surveillance, facts, detectability, unmarried and multi-species detection, threat review, diagnostics, data-basing, modeling of invasion and unfold, optimization, and destiny weather demanding situations

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Extra resources for Biosecurity Surveillance: Quantitative Approaches

Example text

7 Discussion We opened this chapter with a discussion of two issues that impact on the future of biosecurity surveillance: (i) the definition of the term itself; and (ii) the activities that the term encompasses. As indicated in the Introduction, the definitions of biosecurity, and even of biosecurity surveillance, are quite broad and the scope of these terms is evolving and expanding. While plant and animal health practitioners relate well to the term as familiar within their respective frameworks, they may drop the ‘plant and animal’ preface when discussing biosecurity, thereby recognizing it as different from simply a combination of the previously existing two sectors.

For example, the sub-model that describes space–time correlations in the geographic model is strongly linked to the description of the dynamic processes of pest spread of space and time required in the invasion process model. Similarly, the geographic model will inform the component processes of entry, colonization, establishment and spread considered in the invasion model, as well as the habitat suitability sub-models that underpin these processes. The spatial and temporal scales determined in the surveillance design phase impacts on all of the models and the resultant analyses.

2004). , 2007). 26 Megan Quinlan et al. , 2010). , 2010), as can spatial clustering on units within the site (Gschlossl and Czado, 2008). Where there is epistemic uncertainty surrounding the detectability parameter, or detectability is expected to vary between units, the data can be treated as being overdispersed (Potts and Elith, 2006). , 2007). Data from overdispersed Poisson processes may likewise be modelled using a negative-binomial distribution (Royle, 2004; Gschlossl and Czado, 2008). , 2007).

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