Cover -- Contents -- The Socio-Economics of Biodiversity Risks: Reasons for and Methods of Analysis, and Their Application in Case Studies -- 2. Challenges of Policy-Oriented Socio-Ecological Research -- 2.1. Biodiversity Under Menace, Why Is It a Social Matter? -- 2.2. Uncertainties, Risk Assessment and the Precautionary Principle -- 2.3. Ecosystem Services and Functions and Their (E)Valuation -- 2.4. Stakeholders8217; Involvement and Participation -- 2.5. Policy Measures and Social Reactions -- 3. Methodological Approach -- 4. Structure of the Contents -- 5. References -- Hydrilla Verticillata: A Socio-Economic Analysis of the Invasion Process in Lake Izabal, Guatemala -- 1. Introduction -- 2. Description of the Case Study -- 2.1. Characteristics of the Invasive Species -- 2.2. Driving Forces and Pressures -- 2.3. State -- 2.4. Impacts of Hydrilla Verticillata in Lake Izabal -- 2.5. Responses -- 3. Methods -- 3.1. Institutional Setting -- 3.2. Management Scenarios -- 3.3. The Multicriteria Model -- 4. Modelling Results -- 5. Discussion: Contribution of This Case Study to the Discussion of the Book -- 5.1. What Do We Mean By Threats to Biodiversity? -- 5.2. Stakeholder Involvement and Participatory Methods -- 5.3. Different Forms of Knowledge and Different Types of Information -- 6. Conclusions -- 7. References -- The Arrival of Dreissena Polymorpha and Silurus Glanis in the Ebro River: Socio-Economics of Interlinked Aquatic Bioinvasions -- 1. Introduction -- 2. The Invasions of Silurus Glanis and Dreissena Polymorpha in the Ebro River -- 2.1. Strangers in the Ebro River -- 2.2. The Drivers and Pressures of the Invasions -- 2.3. Impacts -- 2.4. Management of the Invasions -- 3. Bioinvasions in the Ebro and Participatory Research -- 4. Lessons Learned About the Key Topics of This Book -- 4.1. What Do We Mean By 8216;Threats to Biodiversity8217;? -- 4.2. Addressing Uncertainties -- 4.3. The Central Role of Ecosystem Services and Their Values -- 4.4. Stakeholders8217; Involvement and Participation -- 5. Additional Contributions From This Case -- 5.1. Scenarios Are Integrative Research Tools for Socio-Environmental Deliberation -- 5.2. Local Agency Matters -- 5.3. Common Enemies Facilitate Dialogues -- 6. Policy Conclusions and Recommendations -- 7. Methodological Conclusions and Recommendations -- 8. Acknowledgements -- 9. References -- 9.1. Legal Documents -- 9.2. Press -- The Use of the Deliberation Matrix for Building a System of Survey and the Foresight of Changes in Biodiversity in the 206;le-De-France Region (France) -- 1. Introduction -- 2. State of Scientific and Naturalist Knowledge About Changes in Biodiversity in the Idf Region -- 2.1. The State of Biodiversity in Idf -- 2.2. The Pressures, Impacts and Driving Forces -- 3. Methods Applied in the Field Work -- 3.1. The Stakeholders8217; Identification and Survey -- 3.2. Using the Dpsir Framework for Building a List of Indicators of Biodiversity At Regional Level -- 3.3. Participatory Scenario-Building -- 3.4. Identification of the Main Stakes for the Governance of Changes of the Idf Biodiversity -- 3.5. Deliberation Matrix: a Support Tool for Multicriteria, Multi-Stakeholder Evaluation of Cha.