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Now showing items 11-19 of 19
Evaluation of amphibian communities of playa wetlands in the Southern High Plains, Texas and physiological effects of environmental stressors on the New Mexico spadefoot toad, Spea multiplicata
(2012-07)
Scope and Methods: The purpose of this dissertation project was two-fold, 1) to investigate the effects of surrounding land use on playa wetlands and resident amphibian communities and 2) to assess developmental and ...
Effects of wetland sedimentation and sediment removal on rainwater basin vegetation, seed bank, and water bird communities
(2011-12)
Scope and Method of Study: The purpose of this study was to assess the effects of restoration, by sediment removal, on wetlands located in the Rainwater Basin region of NE. Assessment included 3 objectives: extant vegetation ...
Ecotoxicological study of white-footed mice (Peromyscus leucopus) from Tar Creek Superfund Site
(2010-12)
Scope and Method of Study: The purpose of this study was to assess the effects of heavy metals on white-footed mice from Tar Creek Superfund Site. Animals used in the study were collected from Tar Creek Superfund Site, and ...
Effects and associations of the production of the biofuel crop Brassica napus on wild invertebrate pollinator communities in the South Central United States
(2015-12)
The addition of biofuel crops to the agricultural landscape is drastically changing habitats around the world with unknown environmental consequences. Agricultural conversion of land negatively affects pollinators which ...
Phylogenetic relationships and historical biogeography of the genus Akodon (Rodentia: Cricetidae)
(2010-12)
Scope and Method of Study: Despite comprising only 12% of the Earth's landmass, South America supports nearly one quarter of all extant species of mammals (Wilson and Reeder 1993). The genus Akodon (Rodentia, Cricetidae) ...
Sericea lespedeza (Lespedeza cuneata) invasion: Implications for a small mammal community and the influence of local fire history
(2013-12)
Lespedeza cuneata [(Dumont) G. Don] is a perennial legume first introduced to North America from eastern Asia in 1896 and is now widespread and well established across much of the eastern and central United States. Possible ...
Possible sexual selection in pre-reproductive hatchling collared lizards (Crotaphytus collaris)
(2015-07)
We studied the possible adaptive significance of precocial sexual signaling in collared lizard hatchlings. Male hatchlings display intense dorsolateral orange bars at hatching or within the first weeks of life. Hatchling ...
Dietary analysis and conservation genetics of the endangered Ozark big-eared bat Corynorhinus townsendii ingens
(2013-07)
Populations of endangered Ozark big-eared bats (Corynorhinus townsendii ingens) are restricted to 19 essential maternity caves or hibernacula in Oklahoma and Arkansas and total only 1,600-1,800 individuals. Effective ...
Laboratory toxicity and field effects of a complex mixture: Oil-field produced water
(2010-07)
This dissertation investigated how organisms in the field and the laboratory responded to complex mixtures or combinations of stressors. Organisms are continually exposed to natural and anthropogenic stressors in the ...