Sökning: "river depletion"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden river depletion.
1. Water Realities and Development Trajectories : Global and Local Agricultural Production Dynamics
Sammanfattning : Water constraints for humans and nature are gaining more and more public attention as a critical environmental dilemma that needs to be addressed. When aquifers and rivers are running dry, the debate refers to an ongoing “world water crisis”. LÄS MER
2. Linking landscape variables, hydrology and weathering regime in Taiga and Tundra ecoregions of Northern Sweden
Sammanfattning : High-latitude watersheds have been regarded as a carbon sink with soil carbon accumulating at low temperature. This sink is now believed to turn into a source, acting as positive feedback to climate warming. LÄS MER
3. Vegetation patterns and processes in riparian landscapes
Sammanfattning : The objective of this study was to increase understanding of the processes structuring and controlling the species richness of riparian plant communities. In particular, I examined the unimodal relationship, found in many rivers, between plant species richness and location along the river corridor. LÄS MER
4. Environmental management of water systems under uncertainty
Sammanfattning : Hydrological drainage/river basins constitute highly heterogeneous systems of coupled natural and anthropogenic water and pollutant flows across political, national and international boundaries. These flows need to be appropriately understood, quantified and communicated to stakeholders, in order to appropriately guide environmental water system management. LÄS MER
5. Role of Lipids in the fate of organochlorine compounds in Aquatic Ecosystems
Sammanfattning : Both results of laboratory experiments and material collected in the field have shown the lipid composition in organisms to have a significant effect on the bioaccumulation of pollutants and on the lipid steady-state concentrations of pollutants there. The redistribution of persistent organic pollutants which occurs in organisms as a consequence of the depletion of lipid depot, was studied in a population of migrating Pacific salmon (Oncorhynchus nerka). LÄS MER