Sökning: "alien invasive species"
Hittade 5 avhandlingar innehållade orden alien invasive species.
1. Deliberating value : On the theory and practice of valuation of nature from neoclassical to ecological economics
Sammanfattning : This thesis is about whether it is a good idea to place monetary value on nature, to remedy the fact that we treat it as having no particular value to us humans, although it clearly has. The thesis is based on five research papers that can be said to position themselves on opposite sides in the debate on monetisation of nature. LÄS MER
2. Rättsligt skydd av biologisk mångfald : etiska perspektiv och normkonflikter
Sammanfattning : En förutsättning för att vi ska uppnå en hållbar utveckling är att vi bevarar den biologiska mångfalden, vilken bland annat hotas av införsel och spridning av invasiva främmande arter. Ett viktigt instrument för att skydda den biologiska mångfalden utgörs av de rättsliga ramar som satts upp på internationell, EU- och nationell nivå. LÄS MER
3. Fate of contaminants in Baltic Sea sediment ecosystems : the role of bioturbation
Sammanfattning : Aquatic sediments are of major importance for the cycling of environmental pollutants, acting as both sinks and secondary sources of contaminants to the ecosystem. Sediment-living organisms can affect the fate and transport of contaminants through activities like feeding and burrowing, collectively called bioturbation. LÄS MER
4. The decline of great Arctic charr in Lake Vättern : empirical and theoretical analyses of suggested causes
Sammanfattning : Human activity is affecting species and ecosystems all over the world. In aquatic systems negative trends can be seen for many fish stocks and potential consequences of this, for ecosystem structure and functions, are of particular concern. LÄS MER
5. Negotiating social-ecological fit through knowledge practice
Sammanfattning : Adaptive governance and management (AG and AM) have been proposed to address the “problem of fit” between ecosystems and governance systems. AG and AM are intended to reconfigure the relations between knowledge and action through, for instance, experimentation, collaboration and monitoring, to enhance social-ecological feedbacks. LÄS MER