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A Spatiotemporal Analysis Of Aspen Decline In Southern Utah’S Cedar Mountain, Using Remote Sensing And Geographic Information Systems, David M. Evans
A Spatiotemporal Analysis Of Aspen Decline In Southern Utah’S Cedar Mountain, Using Remote Sensing And Geographic Information Systems, David M. Evans
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Widespread mortality of quaking aspen (Populus tremuloides Michx.) has occurred over large expanses of the Western US during the 20th century. While much of this decline was due to conifer encroachment into seral aspen, significant aspen losses also occurred in areas of persistent aspen and may have been exasperated by drought conditions. Aspen decline has been especially notable at Cedar Mountain, Utah, an area of mostly private land and extensive persistent aspen coverage. The objectives of this study were to create a time series of live and dead aspen cover on the Cedar Mountain landscape, using remotely sensed …
Mapping Riparian Vegetation In The Lower Colorado River Using Low Resolution Satellite Imagery, Kelly J. Amundsen
Mapping Riparian Vegetation In The Lower Colorado River Using Low Resolution Satellite Imagery, Kelly J. Amundsen
ETD Archive
In the Western United States, monitoring water usage is a complex task carried out by the U.S. Bureau of Reclamation (USBR). It may be argued that USBR's greatest challenge is equitably distributing the waters of the Colorado River, particularly the Lower Colorado River, where water rights have been established and contested several times. To help meet the demands of water management in the Lower Colorado River Basin, USBR estimates the amount of water lost from the basin each year via evapo-transpiration by riparian vegetation in the Lower Colorado River riparian zone. Key components of those estimates include maps of the …
Terrestrial And Marine Geobiophysical Spatial Analysis And Modeling Of Phytoplankton And Nutrients In Haifa Bay, Israel, Sinaya Dayan
Terrestrial And Marine Geobiophysical Spatial Analysis And Modeling Of Phytoplankton And Nutrients In Haifa Bay, Israel, Sinaya Dayan
Theses, Dissertations and Capstones
Haifa Bay, Israel, is considered one of the most polluted environments in the nation. The bay water is enriched with nutrients and shows elevated levels of phytoplankton biomass. This requires continuous data collection to monitor productivity. The objectives of these remote sensing geobiophysical models were to (1) create a terrestrial model component to identify sources for the elevated levels of nutrients in the bay, and (2) marine model component to validate remote sensing algorithms for the detection of Chlorophyll in an oceanic setting. Methods included Spatial Analysis, Principal Component Analysis, Unsupervised Classification, Map Algebra, Band Ratios, and Statistical Regression of …