Biological Invasions: why it Matters -- Biological Invasions: why it Matters -- Pathways of Biological Invasions -- Pathways in Animal Invasions -- Pathways in Plant Invasions -- Is Ballast Water a Major Dispersal Mechanism for Marine Organisms? -- Waterways as Invasion Highways – Impact of Climate Change and Globalization -- Traits of a Good Invader -- Integrating Ecological and Evolutionary Theory of Biological Invasions -- Traits Associated with Invasiveness in Alien Plants: Where Do we Stand? -- Do Successful Invaders Exist? Pre-Adaptations to Novel Environments in Terrestrial Vertebrates -- Patterns of Invasion and Invasibility -- Effects of Land Management Practices on Plant Invasions in Wildland Areas -- Nitrogen Enrichment and Plant Invasions: the Importance of Nitrogen-Fixing Plants and Anthropogenic Eutrophication -- From Ecosystem Invasibility to Local,Regional and Global Patterns of Invasive Species -- Will Climate Change Promote Alien Plant Invasions? -- Ecological Impact of Biological Invasions -- Impacts of Invasive Species on Ecosystem Services -- Biological Invasions by Marine Jellyfish -- Effects of Invasive Non-Native Species on the Native Biodiversity in the River Rhine -- Hybridization and Introgression Between Native and Alien Species -- Genetically Modified Organisms as Invasive Species? -- Economy and Socio-Economy of Biological Invasions -- Plant,Animal, and Microbe Invasive Species in the United States and World -- Socio-Economic Impact and Assessment of Biological Invasions -- Prevention and Management of Biological Invasions -- Economic Analysis of Invasive Species Policies -- Phytosanitary Measures to Prevent the Introduction of Invasive Species -- Limits and Potentialities of Eradication as a Tool for Addressing Biological Invasions -- Pros and Cons of Biological Control -- General Conclusion, or what Has to be Done now?.