Search for dissertations about: "ecosystem manipulation"
Showing result 1 - 5 of 9 swedish dissertations containing the words ecosystem manipulation.
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1. The Effect of Snow on Plants and Their Interactions with Herbivores
Abstract : The ongoing climate changes are predicted to accelerate fast in arctic regions with increases in both temperatures and precipitation. Although the duration of snow cover is generally expected to decrease in the future, snow depth may paradoxically increase in those areas where a large amount of the elevated precipitation will fall as snow. READ MORE
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2. The Torneträsk System - A basis for predicting future subarctic ecosystems
Abstract : Arctic and subarctic areas have experienced a rapid warming and substantial increases in precipitation in recent decades. The frequency and intensity of some extreme events, such as fires, winter warming events, extreme rainfall, and droughts, has also increased. READ MORE
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3. Surface energy exchange and land-atmosphere interactions of Arctic and subarctic tundra ecosystems under climate change
Abstract : The surface energy balance determines the functioning of any ecosystem on the Earth but is still poorly understood in Arctic and subarctic biomes. In a dynamic system, such as the Earth’s climate, any change in its characteristics modifies the exchange of energy, water, and greenhouse gases between the surface and the atmosphere. READ MORE
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4. On Visual Perception for an Aerial Robotic Worker
Abstract : Micro Aerial Vehicles and especially multi rotors are gaining more and more attention for accomplishing complex tasks, considering their simple mechanical design and their versatile movement. MAVs are ideal candidates to perform tasks autonomously, to work safely in close proximity and in collaboration with humans, and to operate safely and effectively in natural human environments, like infrastructure inspection-maintenance, underground mine operations and surveillance missions. READ MORE
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5. Boreal mire carbon exchange : sensitivity to climate change and anthropogenic nitrogen and sulfur deposition
Abstract : Boreal peatlands are important long-term sinks of atmospheric carbon and in the same time the largest natural source of methane to the atmosphere. A changing climate as well as deposition of anthropogenically derived pollutants, such as nitrogen and sulfur, has the potential to affect the processes that control the carbon exchange in peatlands. READ MORE