Sökning: "Ecosystem evolution"
Visar resultat 21 - 25 av 49 avhandlingar innehållade orden Ecosystem evolution.
21. Plant-associated soil communities : Patterns, drivers and aboveground consequences
Sammanfattning : Soil contains a wealth of diversity – bacteria, fungi, nematodes, arthropods and earthworms are just some of the many organisms found belowground. These organisms play an important role in shaping the soil environment and they strongly influence plant fitness, diversity and community composition. LÄS MER
22. Regional Environmental Governance and Avenues for the Ecosystem Approach to management in the Baltic Sea Area
Sammanfattning : This thesis explores the avenues for the ecosystem approach to management in the Baltic Sea Region. This region is one of the most contaminated water bodies in the world, although the first Regional Seas Convention was created here and theregion has a long history of cooperation and environmental protection. LÄS MER
23. Terrestrial Ecosystem Interactions with Global Climate and Socio-Economics
Sammanfattning : The global terrestrial carbon cycle plays a pivotal role in regulating the atmospheric composition of greenhouse gases. Currently it is responsible for removing 25-30% of our emissions every year, an important ecosystem service that may not persist in the long term. LÄS MER
24. Modelling the terrestrial carbon cycle – drivers, benchmarks, and model-data fusion
Sammanfattning : The terrestrial ecosystem sequesters about one-third of anthropogenic emissions each year, thereby providing a critical ecosystem service that slows the rate of increase of atmospheric carbon dioxide and helps mitigate climate change. Observed atmospheric carbon dioxide concentrations exhibit a large inter-annual variability which is considered to be caused primarily by the response of the terrestrial ecosystem to climate change and anthropogenic activity. LÄS MER
25. Understanding mobile service diffusion as an evolutionary process: A study of the Swedish market
Sammanfattning : This thesis aims to highlight the connections between the diffusion of innovation theory and the evolutionary models for technological changes within the context of mobile communication research. On the basis of empirical findings, the discussion focuses on addressing three research questions: Why should mobile service diffusion be understood as an evolutionary process? How should mobile service diffusion be explained and modelled using evolutionary conceptions? And in what way the evolutionary framework could influence future mobile service diffusion studies?Based on empirical observations and a literature study, this thesis argues that mobile service diffusion involves dynamic, developmental and historical economic process which is comparable to an evolutionary process. LÄS MER