Sökning: "Earth sciences"
Visar resultat 1 - 5 av 2513 avhandlingar innehållade orden Earth sciences.
1. Learning-by-modeling : Novel Computational Approaches for Exploring the Dynamics of Learning and Self-governance in Social-ecological Systems
Sammanfattning : As a consequence of global environmental change, sustainable management and governance of natural resources face critical challenges, such as dealing with non-linear dynamics, increased resource variability, and uncertainty. This thesis seeks to address some of these challenges by using simulation models. LÄS MER
2. Social-ecological dynamics in a highly regulated fisheries system - Sources of resilience and limits to command-and-control management
Sammanfattning : Sustainable governance of natural resources is challenged by the poor understanding of complex human-nature couplings. Major advancements in resilience theory, acknowledging the importance of social-ecological linkages and the self-organizing capacity of social-ecological systems, provides a new perspective on research in sustainability science. LÄS MER
Sammanfattning : Global initiatives regarding environmental change have increasingly become part of political agendas and of our collective imagination. In order to form sustainable societies, education is considered crucial by organizations such as the United Nations and the European Union. LÄS MER
4. Seeing and Knowing the Earth as a System : An Effective History of Global Environmental Change Research as Scientific and Political Practice
Sammanfattning : Previous research connecting scientific knowledge production with governing of the global environment usually start in international climate change negotiations and related assessments. From that vantage point Earth system science and models are studied as an expansion of Global Circulation Models. LÄS MER
5. Freshwater methane and carbon dioxide fluxes : Spatio-temporal variability and an integrated assessment of lake and stream emissions in a catchment
Sammanfattning : Freshwater bodies such as lakes and streams release the greenhouse gases methane (CH4) and carbon dioxide (CO2) into the atmosphere. Global freshwater CH4 and CO2 emissions have been estimated to be of a similar magnitude to the global land or ocean carbon sink, and are thus significant components of global carbon budgets. LÄS MER