Sökning: "Ecosystem Evolution"

Visar resultat 6 - 10 av 50 avhandlingar innehållade orden Ecosystem Evolution.

1. 6. Using an Artificial Ecosystem to Understand Living Ecosystems

   Författare :Yu Liu; David Sumpter; Philip Gerlee; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical Biology; Mathematical Modeling; Emergence; Ecosystem Evolution; Community Ecology; Mathematics with specialization in Applied Mathematics; Matematik med inriktning mot tillämpad matematik;

   Sammanfattning : Community ecosystems at very different levels of biological organization often have similar properties. Coexistence of multiple species, cross-feeding, biodiversity and fluctuating population dynamics are just a few of the properties that arise in a range of ecological settings. LÄS MER

3. 7. Connections between biodiversity and ecosystem functioning in large-scale natural ecosystems

   Författare :James Hagan; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biodiversity; ecology; ecosystem function; ecosystem process;

   Sammanfattning : Billions of years of evolution have given us a planet that supports a remarkable diversity of life. Estimates for the number of Eukaryotic species frequently number in the millions and the Prokaryotes are much more diverse than that. This biodiversity makes up the ecosystems that we, as humans, rely on to sustain almost every aspect of our lives. LÄS MER

4. 8. Patterns of evolution in a young species, the Baltic seaweed Fucus radicans

   Författare :Angelica Ardehed; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Marine biology; Evolution;

   Sammanfattning : To be able to interpret patterns of biodiversity it is important to understand the processes by which new species evolve and how closely related species remain reproductively isolated and ecologically differentiated. This thesis centers on the evolution of the two brown algae Fucus radicans and Fucus vesiculosus in the Baltic Sea, where Fucus radicans very recently diverged from F. LÄS MER

5. 9. Extinctions and Ecosystem Stability

   Författare :Susanne Pettersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; structural stability; ecosystems; interaction structure; Generalised Lotka-Volterra; complexity; local stability; dynamical systems; stability;

   Sammanfattning : Human society's expansion and demand for both biotic and abiotic natural resources exert a large pressure on ecosystems around the globe. Ecosystems are complex networks of species interacting with each other and their physical surroundings. LÄS MER

7. 10. Competitive Advantage Strategies in Industrial Marketing : Using an Ecosystem Approach

   Författare :Jeandri Robertson; Tim Foster; Stefanie Paluch; Luleå tekniska universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ecosystems; competitive advantage; competitiveness; network theory; social capital theory; resource-based view; dynamic capabilities; transient advantage; innovation; knowledge; entrepreneurship; Industrial Marketing; Industriell marknadsföring;

   Sammanfattning : Intensified competitive pressures related to a dynamic and hypercompetitive global economy, technological advances, unpredictable customers and competitors, and blurring industry boundaries, have compelled industrial marketers to reconsider the strategic imperatives of the organization, in relation to the competitive context in which it operates. As it becomes increasingly difficult for individual firms to identify and respond to external competitive challenges and changes independently, new organizational perspectives have been proposed to thrive in the presence of these forces. LÄS MER