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Full-Text Articles in Physical Sciences and Mathematics
Patterns Of Trematode Distribution From Hosts Collected At Lake Winnibigoshish, Minnesota, Scott Malotka
Patterns Of Trematode Distribution From Hosts Collected At Lake Winnibigoshish, Minnesota, Scott Malotka
All Graduate Theses, Dissertations, and Other Capstone Projects
A comparative and seasonal study was performed on trematode populations and communities within waterfowl definitive hosts in order to determine important factors in the structuring of these communities. Furthermore, larval trematode populations were also sampled in order to compare larval stages found within snail hosts to adult stages found within collected waterfowl in order to determine where infections could have occurred with the trematode species. 52 birds including 18 blue-winged teal (Anas discors), 5 bufflehead (Bucephala albeola), 4 common goldeneye (Bucephala clangula), 1 greater scaup (Aythya marila), 1 green-winged teal (Anas carolinensis), 11 lesser scaup (Aythya affinis), 1 northern pintail …
The Effects Of Surface Albedo And Initial Lignin Concentration On Photodegradation Of Sorghum Bicolor Litter, Joshua Niere
The Effects Of Surface Albedo And Initial Lignin Concentration On Photodegradation Of Sorghum Bicolor Litter, Joshua Niere
All Graduate Theses, Dissertations, and Other Capstone Projects
Photodegradation has been recognized as a contributor to litter decomposition in a wide variety of ecosystems, however many of the mechanisms that drive it remain unknown. The primary focus of this study was to investigate the effect of surface albedo on the rate at which plant litter photodegrades. The first hypothesis that was tested was that surfaces with higher albedo will increase the rate of mass loss. The second hypothesis was that a wild type Sorghum bicolor with higher lignin concentration will degrade more rapidly than a double mutant variety. Three different artificial surface covers (aluminum foil, black paint, and …
Land Cover Mapping And Change Analysis At The Tensleep Preserve In Wyoming, Tyler Richard Grupa
Land Cover Mapping And Change Analysis At The Tensleep Preserve In Wyoming, Tyler Richard Grupa
All Graduate Theses, Dissertations, and Other Capstone Projects
Mapping land cover and land cover change are important, especially for land managers who protect natural lands and generate restoration projects. Accurate land cover assessment of rangelands can be difficult because the spectral difference between plant species may be minimal. The goal of this research is to map the land cover in the Tensleep Preserve and highlight change that has occurred over the past twenty-three years using the Feature Analyst extension. The land cover change map will highlight significant changes and Feature Analyst will accurately identify different land covers using historical aerial photographs and ground truthing data collected in 2013. …
Early Detection Of Mountain Pine Beetle Damage In Ponderosa Pine Forests Of The Black Hills Using Hyperspectral And Worldview-2 Data, Kyle Edward Mullen
Early Detection Of Mountain Pine Beetle Damage In Ponderosa Pine Forests Of The Black Hills Using Hyperspectral And Worldview-2 Data, Kyle Edward Mullen
All Graduate Theses, Dissertations, and Other Capstone Projects
A leading cause for mortality in the pine forests of western North America, the mountain pine beetle, has impacted over 400,000 acres of ponderosa pine forest in the Black Hills of South Dakota since 1996. Methods aimed at earlier detection, prior to visual manifestation of a mountain pine beetle damage in the tree crown, have not been successful because of the overlap and variability of spectral response between the initial stages of attack (green-attacked) and non-attacked tree crowns. Needle-level reflectance spectra was measured from green-attack and non-attack ponderosa pine trees in early spring following an infestation and analyzed using a …