Sökning: "Terrestrisk ekologi"
Visar resultat 6 - 10 av 13 avhandlingar innehållade orden Terrestrisk ekologi.
6. Ecology across Boundaries : Food web coupling among and within ecosystems
Sammanfattning : Cross-boundary movements of energy and material are ubiquitous. Freshwater ecosystems receive nutrients, dissolved, and particulate organic matter from adjacent terrestrial ecosystems, whereas terrestrial ecosystems mainly receive prey organisms and detritus deposited by physical processes such as floods from freshwater ecosystems. LÄS MER
7. Survival patterns and density-dependent processes in breeding mallards Anas platyrhynchos
Sammanfattning : Measuring and assessing vital rates such as births and deaths are prerequisites for understanding population dynamics. Vital rates may be affected by the density of individuals, even though the importance of density dependence on population dynamics has been debated for a long time. LÄS MER
8. Productivity and carbon transfer in pelagic food webs in response to carbon, nutrients and light
Sammanfattning : Some of the major problems we face today are human induced changes to the nitrogen (N), phosphorus (P) and carbon (C) cycles. Predicted increases in rainfall and temperature due to climate change, may also increase dissolved organic matter (DOM) inflows to freshwater ecosystems in the boreal zone. LÄS MER
9. Population divergence at small spatial scales : – theoretical and empirical investigations in perch
Sammanfattning : Genetically structured populations arise when gene flow between groups of individuals is hindered by geographical, behavioural or temporal barriers. The identification of such groups is important for understanding evolution and has large implications for conservation concern. LÄS MER
10. Genetic variation and gene flow in riparian populations of Filipendula ulmaria
Sammanfattning : .... LÄS MER