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CABI Book Chapter

Pest risk modelling and mapping for invasive alien species.

Book cover for Pest risk modelling and mapping for invasive alien species.

Description

The International Pest Risk Mapping Workgroup acknowledges that advanced training and a 'tool kit' of software packages are needed to produce pest risk maps that are fully fit for purpose. This book is an initial attempt to address those needs. Invited chapters emphasize specific steps and data requirements to guide users through the development of pest risk models and maps, or components thereof....

Metrics

Chapter 7 (Page no: 97)

Detecting and interpreting patterns within regional pest species assemblages using self-organizing maps and other clustering methods.

This chapter highlights quantitative methods designed to identify and rank exotic species with potential risk to cause economic and/or environmental harm if they establish in a new area. Until now, pest risk assessments have tended to be qualitative and reactive instead of quantitative and proactive. Here, a computational-intelligence technique called a self-organizing map (SOM) is described that can be used to analyse regional profiles or assemblages of pest species to determine their potential for establishment in new regions. In addition to the SOM, two other useful clustering or classification algorithms, k-means and hierarchical analysis, are also demonstrated to provide a quantitative framework to the risk assessment process. The examples described for each method illustrate how a pest risk analyst can identify, from a large list of potential hazards, which species present the most risk to target areas. Furthermore, examples are given of how such analyses may indicate donor and recipient regions for pest invasion and can highlight previously unknown or ignored threats for further investigation. Finally, cautions are provided and limitations of SOMs and other clustering methods applied to the area of pest risk assessment are discussed.

Other chapters from this book

Chapter: 1 (Page no: 1) The challenge of modelling and mapping the future distribution and impact of invasive alien species. Author(s): Venette, R. C.
Chapter: 2 (Page no: 18) Mapping endangered areas for pest risk analysis. Author(s): Baker, R. Eyre, D. Brunel, S. Dupin, M. Reynaud, P. Jarošík, V.
Chapter: 3 (Page no: 35) Following the transportation trail to anticipate human-mediated invasions in terrestrial ecosystems. Author(s): Colunga-Garcia, M. Haack, R. A.
Chapter: 4 (Page no: 49) Simulation modelling of long-distance windborne dispersal for invasion ecology. Author(s): Parry, H. R. Eagles, D. Kriticos, D. J.
Chapter: 5 (Page no: 65) Using the MAXENT program for species distribution modelling to assess invasion risk. Author(s): Jarnevich, C. S. Young, N.
Chapter: 6 (Page no: 82) The NCSU/APHIS plant pest forecasting system (NAPPFAST). Author(s): Magarey, R. D. Borchert, D. M. Fowler, G. A. Hong, S. C.
Chapter: 8 (Page no: 115) Modelling the spread of invasive species to support pest risk assessment: principles and application of a suite of generic models. Author(s): Robinet, C. Kehlenbeck, H. Werf, W. van der
Chapter: 9 (Page no: 131) Estimating spread rates of non-native species: the gypsy moth as a case study. Author(s): Tobin, P. C. Liebhold, A. M. Roberts, E. A. Blackburn, L. M.
Chapter: 10 (Page no: 145) Predicting the economic impacts of invasive species: the eradication of the giant sensitive plant from Western Australia. Author(s): Cook, D. C. Sheppard, A. Liu Shuang Lonsdale, W. M.
Chapter: 11 (Page no: 162) Spatial modelling approaches for understanding and predicting the impacts of invasive alien species on native species and ecosystems. Author(s): Allen, C. R. Uden, D. R. Johnson, A. R. Angeler, D. G.
Chapter: 12 (Page no: 171) Process-based pest risk mapping using Bayesian networks and GIS. Author(s): Klinken, R. D. van Murray, J. V. Smith, C.
Chapter: 13 (Page no: 189) Identifying and assessing critical uncertainty thresholds in a forest pest risk model. Author(s): Koch, F. H. Yemshanov, D.
Chapter: 14 (Page no: 206) Making invasion models useful for decision makers: incorporating uncertainty, knowledge gaps and decision-making preferences. Author(s): Yemshanov, D. Koch, F. H. Ducey, M.
Chapter: 15 (Page no: 223) Assessing the quality of pest risk models. Author(s): Venette, S. J.

Chapter details