Search for dissertations about: "Växtekologi"
Showing result 16 - 20 of 119 swedish dissertations containing the word Växtekologi.
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16. Leaf Area Index of Scandinavian Forests Methods Using in situ and Remotely Sensed Data
Abstract : This thesis deals with methods of obtaining the leaf area index (LAI) from remotely sensed satellite data. Initially, in situ estimation methods were investigated, since the accuracy of the remotely sensed estimates is dependent on the quality of these estimates. READ MORE
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17. Recruitment and distribution patterns of plants in Swedish semi-natural grasslands
Abstract : Semi-natural pastures with different histories of management are nowadays the main remnants of the traditional agrarian landscape in southern Sweden. The aims of this thesis were to investigate the importance of features of the present-day landscape and its management history for species distribution and abundance patterns in Swedish semi-natural pastures, with a particular focus on factors affecting recruitment processes. READ MORE
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18. Plant phenology in seasonal environments
Abstract : Phenology, or the seasonal timing life-history events such as emergence, reproduction and senescence will determine the outcome of interactions between plants and both abiotic and biotic aspects of the environment. Such timing is therefore of utmost importance for plants in seasonal environments. READ MORE
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19. Ecology and evolution in a host-parasitoid system : Host search, immune responses and parasitoid virulence
Abstract : In host-parasitoid systems, there is a continuous coevolutionary arms race where each species imposes a strong selection pressure on the other. The host needs to develop defence strategies in order to escape parasitism and the parasitoid must evolve counter-defence strategies in order to overcome the host’s immune defence and successfully reproduce. READ MORE
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20. Grazing and the geographical range of seaweeds : The introduced Fucus evanescens and the newly described Fucus radicans
Abstract : Along the coast of temperate oceans brown algae of the genus Fucus form dense stands on rocky shores and are keystone species of the coastal ecosystem. These large seaweeds are perennial and function as substrate for many sessile marine organisms, provide shelter for fauna and juvenile fish, and are food source. A number of abiotic (e.g. READ MORE