Good biosecurity policy decisions, particularly in relation to plant industry protection, are of ever increasing importance. Growth in the speed and diversity of trade, the effects of climate change and the resultant spread of pests and diseases continue to highlight this. This book contains an introduction to the issues confronting plant biosecurity policymakers and how the economic risks of invasive species can be assessed over time. It describes both probability models that show what might happen if species 'invade' a region and values models that help decide what management actions should be taken.As the first book of its kind focusing on a comprehensive range of policies, case studies and applications, Plant Biosecurity Policy Evaluation is perfect for biosecurity policy makers, decision-support specialists, advanced students of agricultural studies, public policy and invasive species research.

'This well-written and highly readable book makes a major contribution to advancing our understanding of the contribution that economics can make to analysing the impact of international trade policies for environmental risks ... Regardless of the likelihood that the current WTO dispute settlement procedures can be changed in the way suggested by the authors of this book, it is essential reading for those interested in the contribution that economics can make to advancing our understanding of the implications of international trade law for environmental issues.'Journal of Agricultural EconomicsWe live in a world that is increasingly dependent on international trade in a context of substantial regional/national political tensions. Adding to this is an emerging understanding and concern about the social impact of biosecurity and ecosystem services risks associated with such trade. As the key international trade 'arbiter', the World Trade Organization (WTO) has never before faced such complexity within its decision-making remit.With increasing numbers of bilateral and regional agreements, as well as new developments emerging such as the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) initiated by multi-national corporations in 2018, the WTO needs to implement ways of reinforcing its legitimacy and enhancing its relevance.This book provides an original analysis of these linked developments and delivers a timely contribution to resolving environment-related international trade disputes. It provides a clear roadmap for improving WTO trade dispute resolution procedures so both biosecurity and ecosystem services risks are considered in evaluating the social, economic and environmental impacts of international trade proposals. In so doing, the WTO should deliver enhanced multilateral social welfare.