Sökning: "ecosystem functions"
Visar resultat 6 - 10 av 115 avhandlingar innehållade orden ecosystem functions.
6. Diversity and Ecosystem Functioning : Redundancy and Resilience in Freshwater Bacterial Communities
Sammanfattning : Bacteria are immensely diverse and hold key-positions in essentially all biogeochemical cycles. In freshwater ecosystems, bacteria degrade and mineralize organic compounds, linking the pool of dissolved organic matter to higher trophic levels. LÄS MER
7. Macroalgae in tropical seascapes : regulating factors and functions in the coastal ecosystem
Sammanfattning : Although macroalgae usually are inconspicuous on pristine coral reefs, they often thrive on reefs that are subjected to various types of anthropogenic disturbance. This thesis consists of five papers and investigates how biomass and composition of macroalgal communities on coral reefs are affected by regulating factors, such as nutrient availability, herbivory, substrate availability and hydrodynamic forces. LÄS MER
8. Linking functional traits and cultural ecosystem services in urban areas through human preferences
Sammanfattning : Urban areas are now the daily lived experience for the majority of the world’s people, and it is therefore important to explore what kind of ecological communities and corresponding ecosystem functions and services are being generated in these environments. Urban areas are shaped by a variety of factors, but arguably one of the most influential is that of people, in terms of how their preferences and active selective choices for biota play out in the landscape. LÄS MER
9. Microbial Ecosystem Functions Along the Steep Oxygen Gradient of the Landsort Deep, Baltic Sea
Sammanfattning : Through complex metabolic interactions aquatic microbial life is essential as a driver of ecosystem functions and hence a prerequisite for sustaining plant and animal life in the sea and on Earth. Despite its ecological importance, information on the complexity of microbial functions and how these are related to environmental conditions is limited. LÄS MER
10. Radionuclides in the Baltic Sea : Ecosystem models and experiments on transport and fate
Sammanfattning : Manmade radionuclides have been introduced to the environment for almost a century. The main source has been the nuclear weapons testing programmes, but accidental releases from the nuclear power production industries have also contributed. The risk to humans from potential releases from nuclear facilities is evaluated in safety assessments. LÄS MER