Search for dissertations about: "herbivores"
Showing result 1 - 5 of 84 swedish dissertations containing the word herbivores.
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1. Circumpolar impacts of herbivores on Arctic tundra vegetation
Abstract : Arctic tundra vegetation provides many ecological services that have implications for the global climate. However, the tundra biome is currently changing in response to increasing temperatures. Herbivores may mitigate some of these responses to warming through their impact on Arctic vegetation. READ MORE
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2. Herbivores influence nutrient cycling and plant nutrient uptake : insights from tundra ecosystems
Abstract : Reindeer appear to have strong positive effects on plant productivity and nutrient cycling in strongly nutrient-limited ecosystems. While the direct effects of grazing on vegetation composition have been intensively studied, much less is known about the indirect effect of grazing on plant-soil interactions. READ MORE
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3. Ecology of parasitoids and their hosts in oilseed rape fields
Abstract : Oilseed rape fields are a very common crop in the agricultural landscape of southern Sweden, and they can harbour surprisingly many insect species. Some of them are herbivores that feed on various parts of the oilseed rape plant, others are natural enemies of the herbivores, and even more species are tourists from the surrounding landscape. READ MORE
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4. Plant polyploidy and interactions with insect herbivores
Abstract : Polyploidization has been suggested to be a common mechanism for plant speciation. Polyploidy is associated with changes in plant traits and altered habitat preference. READ MORE
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5. Forest Development and Interactions with Large Herbivores
Abstract : This thesis discusses aspects of feeding habits of moose (Alces alces) and their impact on forest development. The development of forage that is available to moose was studied by sampling the amount of edible biomass on pine and birch trees. READ MORE