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Climatic Range Filling Of North American Trees, Benjamin Seliger
Climatic Range Filling Of North American Trees, Benjamin Seliger
Electronic Theses and Dissertations
Understanding the degree to which species distributions are controlled by climate is crucial for forecasting biodiversity responses to climate change. Climatic equilibrium, when species are found in all places which are climatically suitable, is a fundamental assumption of species distribution models, but there is evidence in support of climate disequilibria in species ranges. Long-lived, sessile organisms such as trees may be especially vulnerable to being outpaced by climate change, and thus prone to disequilibrium. In this dissertation, I tested the degree to which North American trees are in equilibrium with their potential climatic ranges using the ‘range filling’ metric, which …
Integrating Asset Management To Achieve Infrastructure Sustainability And Resiliency In Stormwater Systems, Mirandi Lynn Mcdonald
Integrating Asset Management To Achieve Infrastructure Sustainability And Resiliency In Stormwater Systems, Mirandi Lynn Mcdonald
Electronic Theses and Dissertations
As the world faces climate and resource pressures, there is an ever-growing demand for sustainable products and processes throughout the whole life cycle. Sustainable infrastructure has become one of the leading research topics in civil engineering. It refers to mitigating, decreasing, and even eliminating the social, economic and ecological impacts during the lifecycle of an infrastructure project, which includes its design, construction and operation. However, achieving sustainability is challenging and requires an interdisciplinary approach because of the many variables that need to be understood and assessed. One field of expertise long practiced by municipal management but not necessarily by engineers …
Retreat Of The Antarctic Ice Sheet In The Southern Ross Embayment From Records At Amundsen And Liv Glaciers, Southern Transantarctic Mountains, Jillian Pelto
Electronic Theses and Dissertations
The Antarctic Ice Sheet contains ~58 m of global sea-level equivalent and thus its future behavior under global warming is of pressing concern. Examination of past ice-sheet behavior during periods of warming climate can afford insight useful for predicting future sea-level rise. This study focuses on a major unanswered question - namely, the cause of Antarctic Ice Sheet retreat following the last glaciation. Documenting the timing and nature of this deglaciation is crucial to understand the mechanisms behind ice-sheet behavior. Here, I examine how the marine portions of the ice sheet responded to the major warming that occurred at the …