Life Sciences Commons^™

Fire Occurrence, Behavior And The Effect Of Fire On Deer Mouse Density In Oakbrush At Camp Williams National Guard Base, Utah, Joel E. Godfrey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fire occurrence and behavior were determined by collecting and analyzing fuel, weather, and fire history data. Fuel plots were used to measure average fuel loading by vegetation type and integrated with weather to make worst-case fire behavior predictions. A fire history was developed using oakbrush (Quercus gambelli Nutt.) sprouts to determine age and the Global Positioning System (GPS) for mapping the burned areas. Average fuel loading was highest in the oakbrush fuel type with 16.8 t/ha, then juniper (Juniperus osteosperma Torrey) with 6.72 t/ha, and the lowest was in sagebrush (Artemisia tridentata Nutt.) with 4.93 t/ha. Fire behavior predictions were …

Classification Of Vegetation And Analysis Of Its Recent Trends At Camp Williams, Utah Using Remote Sensing And Geographic Information System Techniques, Thomas G. Van Niel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Current vegetation classes were generated from remotely sensed data to provide coarse-level information for an ecosystem management plan developed at Camp Williams, Utah. Vegetation trend from 1973 - 1993 was also examined via satellite imagery. The data set consisted of Landsat Multispectral Scanner (MSS) and Thematic Mapper (TM) images from July or August of 1973, 1975, 1980, 1988, and 1993.

Two approaches were used to detect vegetation change. The first approach determined overall and cover type trend from standard digital image differencing of soil-adjusted vegetation index (SAVI) images. The second approach used an unsupervised classification of a composite SAVI image …

Green River Foodweb: Colorado Squawfish Nursery Habitat Near Ouray National Wildlife Refuge, Utah, Linden Hamer Alder

Undergraduate Honors Capstone Projects

Effects of fish introductions are relatively well studied in lentic habitats, and apparently range from extremely disruptive to notably benign (Kruegger and May 1991). Though researched less completely, fish introductions may also alter native faunas in lotic habitats. Ptychocheilus lucius, commonly known as the Colorado squawfish (C. squawfish), is a fish species endemic to the Colorado river system. The population is currently experiencing dramatically reduced recruitment successes relative to historical rates. Introduced fishes such as channel catfish, smallmouth bass, and green sunfish are prevalent in the Upper Colorado River. The introduced fish presence is increasingly suspected by researchers as a …