TY  - JOUR
A1  - Makowski, David
T1  - Uncertainty and sensitivity analysis in quantitative pest risk assessments : practical rules for risk assessors
T2  - NeoBiota
N2  - Quantitative models have several advantages compared to qualitative methods for pest risk assessments (PRA). Quantitative models do not require the definition of categorical ratings and can be used to compute numerical probabilities of entry and establishment, and to quantify spread and impact. These models are powerful tools, but they include several sources of uncertainty that need to be taken into account by risk assessors and communicated to decision makers. Uncertainty analysis (UA) and sensitivity analysis (SA) are useful for analyzing uncertainty in models used in PRA, and are becoming more popular. However, these techniques should be applied with caution because several factors may influence their results. In this paper, a brief overview of methods of UA and SA are given. As well, a series of practical rules are defined that can be followed by risk assessors to improve the reliability of UA and SA results. These rules are illustrated in a case study based on the infection model of Magarey et al. (2005) where the results of UA and SA are shown to be highly dependent on the assumptions made on the probability distribution of the model inputs.
KW  - Model
KW  - Pest risk assessment
KW  - Sensitivity
KW  - Uncertainty
Y1  - 2013
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/32383
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-323837
IS  - 18
SP  - 157
EP  - 171
ER  -