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Host Plant Use, Phenology, And Biological Control Of The Brown Marmorated Stink Bug (Hemiptera: Pentatomidae; Halymorpha Halys) In Northern Utah, Mark Cody Holthouse
Host Plant Use, Phenology, And Biological Control Of The Brown Marmorated Stink Bug (Hemiptera: Pentatomidae; Halymorpha Halys) In Northern Utah, Mark Cody Holthouse
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The invasive brown marmorated stink bug, Halyomorpha halys (Stål), has become a significant agricultural and urban nuisance pest in North America, causing millions of dollars of damage to specialty fruit and vegetable crops over the past two decades. This pest uses over 170 host plant species in North America and is difficult to control with most conventional insecticides. Following the establishment of H. halys in Utah in 2012, this dissertation explores the plant host species, seasonal development, and biological control agents found in the unique climate conditions of the Intermountain West. Chapter II documents important plant species utilized by each …
Evaluation Of Bioretention Performance In Northern Utah As A Function Of Media, Vegetation, And Loading, Trixie Rife
Evaluation Of Bioretention Performance In Northern Utah As A Function Of Media, Vegetation, And Loading, Trixie Rife
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Pollutants found in stormwater runoff are a growing environmental concern. The EPA has identified bioretention (BR) systems as a best management practice for the control of pollutants in stormwater runoff. BR systems reduce pollutant loads discharged to surface water bodies and to lower pollutant concentrations of water infiltrating into underlying groundwater. However, knowledge of the performance of BR systems in semi-arid Western climates is lacking. This study was conducted at three field sites in Northern Utah to evaluate the effectiveness of various natural and engineered media and various plant species on pollutant removal subjected to a range of pollutant loadings …
Bighorn Sheep Demographics Following Pneumonia Die-Off Events, Kylie Sinclair
Bighorn Sheep Demographics Following Pneumonia Die-Off Events, Kylie Sinclair
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Bighorn sheep populations across the Intermountain West are subject to disease pressure from the respiratory bacteria Mycoplasma ovipneumoniae. Although the effects of M. ovipneumoniae-associated disease die-offs are well documented, less is known about the factors driving long-term differences in post-die-off population responses. While many herds experience years to decades in which recruitment is less than 20 lambs per 100 ewes, some herds’ lamb survival rates are able to rebound rapidly following die-off events. The reason why these herds recover quickly while others do not is currently unknown. Here, we assess the roles environmental, demographic, and pathogen-associated factors could …