Sökning: "ecological communities"
Visar resultat 1 - 5 av 194 avhandlingar innehållade orden ecological communities.
1. Evolving ecological communities in changing environments
Sammanfattning : This thesis consists of theoretical studies of the evolutionary consequences of environmental change in ecological communities. Paper I and II are concerned with the origin of diversity, i.e. how a single lineage can split into two, under the influence of selection induced by competitive interactions (evolutionary branching). LÄS MER
2. Microbial communities : descriptors of environmental change in marine ecosystems
Sammanfattning : In northern marginal seas, like the northern Baltic Sea, climate change will lead to many alterations, for example increased inflows of nutrients and dissolved organic matter (DOM). Nutrients and DOM are fundamental drivers shaping marine microbial communities, including both bacterial and phytoplankton populations. LÄS MER
3. Extinctions in Ecological Communities : direct and indirect effects of perturbation on biodiversity
Sammanfattning : In the dawning of what may become Earth’s 6th mass extinction the topic of this thesis, understanding extinction processes and what determines the magnitude of species loss, has become only too relevant. The number of known extinctions (~850) during the last centuries translates to extinction rates elevated above the background rate, matching those of previous mass extinction events. LÄS MER
4. Ecological structure of South Korea : an ecological factor analysis of cities and rural communities in South Korea in 1969
Sammanfattning : .... LÄS MER
5. Human Behaviour in Social-Ecological Systems : Insights from economic experiments and agent-based modelling
Sammanfattning : Progress towards sustainability requires changes in our individual and collective behaviour. Yet, our fundamental understanding of behaviour in relation to environmental change remains severely limited. LÄS MER