Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 112 for “"Climate Warming"”.
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Impacts of climate warming on range shifts with emphasis on tropical mountains
Climate warming induced range shifts are evident globally for a wide range of taxonomic groups. However, whether such responses have taken place in tropical insect species is unclear. I provided the first such evidence that tropical insects have moved uphill over four decades of climate warming. I …
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Connecting above- and belowground effects of climate warming on bumble bee health
<p>Climate warming has been identified as one of the primary factors causing worldwide pollinator declines. One of the most at-risk groups of pollinators is bumble bees (<em>Bombus</em> spp.). Bumble bees are common, widespread, and key pollinators of a wide range of crops and wild plants. Although …
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The ecological impacts of climate warming and pollution on freshwater microbial communities
… gap by studying how prolonged and acute warmings impact freshwater sediment bacterial communities originating from streams spanning an urbanisation gradient using experimental freshwater mesocosms. Sediment was collected from eight streams around Oslo, Norway which form part of a larger …
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Mitochondrial Haplotype Influences the Impact of Simulated Climate Warming on a Tropical Ectotherm
While the plight of polar bears in a rapidly warming world is much publicized, recent theory suggests that the organisms likely to be most at risk from rising temperatures are terrestrial arthropods and reptiles inhabiting the tropics. In such ectothermic species, metabolic rate increases …
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An Energetic Perspective on the Tropical Atmosphere and its Response to Climate Warming
… of the tropical atmosphere and its response to warming using energetic approaches. We focus on three features of the atmosphere over tropical oceans: the response of precipitation to warming, the gross moist stability (GMS), and the response of the Pacific Walker circulation (WC) to warming. …
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The response of moist convection and the atmospheric general circulation to climate warming
… available potential energy (CAPE) with warming found in the simulations. Increases in updraft velocity are also found in the RCE simulations as the atmosphere warms. The magnitude of these increases is explained through a conceptual model based on an entraining plume. The results imply …
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BIOMINERALIZATION AND GLOBAL CHANGE: BIOTIC RESPONSE TO THE GONDWANAN GLACIATION AND SUBSEQUENT CLIMATE WARMING
… the Permian, has been the theatre of dramatic climate changes. Starting from greenhouse climatic conditions, this time-interval witnessed the transition to icehouse conditions in the late Visean, with the onset of the Late Palaeozoic Ice Age, one of the major glacial events occurred in the …
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Acidification and Climate Warming: Understanding the Impact of Multiple Anthropogenic Stressors on Adirondack (NY, USA) Lakes
… to present, changes most likely due to regional warming and/or oligotrophication. A subset of three reference lakes were then paired with two Adirondack lakes that acidified and are undergoing chemical recovery from acidification. The acidified lakes underwent a significant shift in species …
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Interactive effects of climate change and management on grassland greenhouse gas emissions
Climate warming has the potential to alter carbon (C) and nitrogen (N) cycling affecting greenhouse gas (GHG) emissions and a range of other ecosystem functioning in grasslands. This will be particularly important for the sustainability of agricultural ecosystems due to its role in global food …
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Arsenic mobility in a changing northern climate: Implications for geochemical baselines and long-term stability of contaminants in lake systems
Climate change is influencing the biogeochemical dynamics of lake systems in northern Canada. These changes may affect the loading and cycling of naturally occurring metal(loid)s and the long-term stability of mining-derived contaminants in sub-Arctic lakes. Arsenic (As) concentrations of lakes in …
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Assessing the Impact of Climate Change on Tourism Demand
… is that this study extends the existing tourism/climate literature by improving climate measurement and the methodologies for quantifying the relationship between tourism and climate. The practical contribution of this study comes from the fact that region-specific knowledge about the impact of …
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Vegetation cover change on Tindfjöll mountains, Iceland, assessed by aerial photographs, topography, and climate
Climate change is having a great impact on the fragile High Latitude environment where warming is occurring at a rate at least double the global average. It is urgent to understand the relationship between climate and vegetation cover, which is playing an important role, as a carbon sink, for …
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Moist Baroclinic Instability and Macroturbulence of the Midlatitude Atmosphere
… mode of instability in an idealized GCM with climate warming. While we have a good theoretical understanding of dry cyclogenesis, our understanding of DRV formation, and propagation as well as their growth rate and length scale is poor. In chapters 2 and 4 of my thesis, a fluid dynamical …
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Integrating the effects of climate change and caribou herbivory on vegetation community structure in low Arctic tundra
… vegetation communities are rapidly responding to climate warming with increases in aboveground biomass, particularly in deciduous shrubs. This increased shrub density has the potential to dramatically alter the functioning of tundra ecosystems through its effects on permafrost degradation and …
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Analysis of laminated sediments from Lake DV09, northern Devon Island, Nunavut, Canada
… sediments, providing a 1600-year record of climate variability. A minerogenic lamina deposited during the annual thaw period and a thin deposit of organic matter deposited during the summer and through the winter, together form a clastic-organic couplet each year. The thinnest varves occur …
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Satellite-based detection of contrails using deep learning
… to account for approximately half of all climate warming resulting from aviation emissions, but uncertainty in coverage is high [12, 2]. These artificial clouds form behind aircraft and trap outgoing infrared radiation, leading to a warming effect [12, 3, 28, 40, 3]. With aviation forecast …
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The influence of spatiotemporal variation in ambient temperature on the ecology and physiology of birds
… is becoming increasingly important due to climate warming, yet patterns of geographic variation in heat tolerances of endotherms have not been characterized. Finally, few studies have investigated the potential ecological consequences of variation in thermal physiology, particularly in …
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Climate impact on phytoplankton blooms in shallow lakes
… ecosystems across the globe have responded to climate warming of recent decades. However, correctly attributing observed changes to altered climatic conditions is complicated by multiple anthropogenic influences on lakes. This thesis contributes to a better understanding of climate impacts on …
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Indigenous Knowledge of Human–Polar Bear Coexistence in Churchill, Manitoba
… Arctic warms and sea ice habitat declines due to climate warming, coexistence strategies between people and polar bears have become increasingly important. This study uses community-based participatory research; coproduction of knowledge; hands back, hands forward; and storytelling to documents …
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