Essays about: "arctic ecosystems"
Showing result 1 - 5 of 34 essays containing the words arctic ecosystems.
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1. Loess as an Environmental Proxy for Reconstruction of Palaeoclimate in the High Arctic
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : We are currently speeding towards significant changes in the climate of the earth which, if ignored, will lead to severely altered climatic conditions with serious consequences for several species and ecosystems. The polar regions especially are very sensitive to climate changes, and the changes these regions undergo affect the climate on a global scale. READ MORE
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2. Do OTC warming effects on ecosystem processes depend on moss species identity, precipitation, and moss removal?
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : Long-term warming experiments in arctic tundra have resulted in reduced moss cover and increased vascular plant cover. As mosses have a major impact on microclimatic conditions, changes in community composition can potentially alter direct and indirect drivers of productivity and decomposition, which are low in arctic ecosystems. READ MORE
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3. Optimal foraging in an Arctic herbivore : How does the foraging behaviour of Svalbard reindeer (Rangifer tarandus platyrhynchus) respond to seasonal changes from summer through autumn of the Arctic tundra?
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : Foraging decisions of large herbivores can be affected by many factors and have great effect on both above- and below-ground ecosystems. Here, I determine to which degree temporal (seasonality), or spatial (habitat) factors influence the foraging behaviour of Svalbard reindeer (Rangifer tarandus platyrhynchus) and asses if small-scale foraging behaviour correlates with an animals’ patch residence time. READ MORE
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4. Legacy effects of temperature alterations on microbial resistance and resilience to drying and rewetting
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : With warming in soils due to climate change, a series of secondary factors arise, which have multifaceted effects on soil microbial communities. Of these, alterations to soil moisture are among the most crucial to understanding how microbial functions will change in the face of climate change. READ MORE
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5. Aquaculture and its effect on the wild fish resource in a Swedish lake : An evaluation of changes in fat content, protein content and trophic niche
University essay from SLU/Dept. of Wildlife, Fish and Environmental StudiesAbstract : Fish is nutritious and important as a food source for many people. It contains high levels of protein, important omega-3 fatty acids as well as micronutrients. For a sustainable fish consumption, aquaculture is needed but it can affect nearby ecosystems in many ways. READ MORE