Sökning: "spatial structure"
Visar resultat 1 - 5 av 613 avhandlingar innehållade orden spatial structure.
Sammanfattning : In this theses I have focused on how the mechanisms of species interactions affect community structure. It is well known that certain species may have a particularly strong influence on the structure of a community. What is not fully understood is how to characterize these species that have such a strong impact on community structure. LÄS MER
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Sammanfattning : Why do cities appear the way they do? What are the underlying forces that contribute to its built environment and transport system? What/whom are the factors/actors that influence the ways in which the city is shaped? How can the international differences in the shape of cities be explained? The driving forces that shape the city are numerous and complex. City structure, has through the ages, been influenced by new technologies, social agencies and planning ideals. LÄS MER
Sammanfattning : This thesis focuses on the spread of organisms in both ecological and epidemiological contexts. In most of the studies presented, displacement is modeled with a spatial kernel function, which is characterized by scale and shape. These are measured by the net squared displacement (or kernel variance) and kurtosis, respectively. LÄS MER
Sammanfattning : This thesis focuses on the spatial structure and methods to identify spatial structure in plants. Methods that investigate genetic structure can mainly be divided into equilibrium methods that reveal summed dispersal over many generations, and cluster methods, that reveal more recent dispersal events. LÄS MER