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Table of Contents
Modelling the distribution of pig production and diseases in Thailand
1. Introduction 1
2. Outline of the thesis 6
3. Methodological overview 7
3.1 Collection, integration and visualisation 9 3.2 Spatial analysis and modelling 11
3.2.1 Descriptive methods 10
3.2.1.1 Moran’s I 12
3.2.1.2 Correlogram 12
3.2.1.3 Spatial Scan Statistics 13
3.2.2 Statistical modelling 14 3.2.2.1 Presence-only data 15 3.2.2.2 Presence-absence data 17 3.2.2.3 Abundance data 22 3.2.3 Knowledge-based modelling 22 3.2.4 Model Evaluation 32 4. Summarized Results 35 5. General Discussion 37 6. Conclusions 51 7. References 52
Study I: Spatial distribution and characteristics of pig farming in Thailand
Abstract 63
Introduction 64
Material and Methods 66
Results 71
Discussion 76
Conclusion 80
References 80
Supplementary data 84
Study II: Spatial epidemiology of porcine reproductive and respiratory in Thailand
Abstract 85
Introduction 86
Material and Methods 87
Results 91
Discussion 95
Conclusions 97
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Study III: Spatial characterization of colonies of the flying fox bat, a carrier of Nipah Virus in ThailandAbstract 101
Introduction 102
Material and Methods 103
Results 109
Discussion 115
Conclusions 117
References 118
Study IV: Using Spatial Multi-Criteria Decision Analysis to identify suitability of pig farming in Thailand
Abstract 123
Introduction 124
Materials and Methods 126
Results 129
Discussion 138
Conclusions 141
References 142
Appendix
Appendix A: Sources of secondary data 147 Appendix B: Good agricultural practices for pig farm 153
