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Theses and Dissertations

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Browsing Theses and Dissertations by Author "Bernasek, Alexandra, committee member"

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    Factors predicting acceptability of toxicant usage to control feral swine
    (Colorado State University. Libraries, 2018) DeGroot, Samantha L., author; Bright, Alan, advisor; Bernasek, Alexandra, committee member; Jones, Kelly, committee member; Shwiff, Stephanie, committee member
    The population increase and spread of feral swine across the United States is of increasing concern to producers, land managers, the common public, and government. Feral swine carry harmful diseases, cause extensive damage to property, and are opportunistic omnivores that will eat anything. This study explores how mass media coverage and aspects of the cognitive hierarchy influence the specific lethal management action of a toxicant usage to control feral swine. A content media analysis was conducted to observe how the media portrays the toxicant Kaput across different time periods and news platforms. Statistical analysis revealed that a little over half of the articles were published following four major events which included, a) approval of 'Kaput' as a state-limited-use pesticide in Texas b) restraining order against the use of 'Kaput' c) the passing of a bill requiring strict scientific study of any further toxicant before release in Texas, and d) the withdrawal of 'Kaput' in the state of Texas. An additional analysis revealed the most discussed themes within the articles including a) the use of a toxicant as a management tool to control feral swine b) the mention of the toxicant containing a Warfarin base, and c) challenges regarding the toxicant as being species-specific. The majority of these articles were either negative or neutral, mostly describing the toxicant and then explaining the faults in its use. This resulted in the toxicant being pulled off of the market. In addition to the content media analysis, a wildlife survey was mailed out to 200 urban residents and 200 rural residents from each of the 50 United States to measure individuals' wildlife value orientations, general beliefs toward feral swine, and their support or opposition of the use of poison to kill feral swine. The overall response rate was 11%. Statistical analysis revealed that negative attitudes toward feral swine and a domination wildlife value orientation were key identifiers of support for a toxicant lethal management action of feral swine (p < .05). The opposite was determined with a non-significant value for a mutualism value orientation, opposing the use of a toxicant. As wildlife managers and government agencies continue efforts to mitigate damages and manage feral swine, the value orientations and attitudes of the public should be taken into consideration. The lethal management action chosen should reflect the public's value orientations and attitudes to have an accepted management technique suitable to control feral swine as well as support the public.
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    Factors predicting feral swine management preferences and willingness to pay
    (Colorado State University. Libraries, 2016) Harper, Erin E., author; Bright, Alan, advisor; Bernasek, Alexandra, committee member; Shwiff, Stephanie, committee member; Teel, Tara, committee member
    The population increase and spread of feral swine across the United States is of increasing concern to agricultural producers, land managers, and government. Feral swine cause extensive damage to property, carry several diseases, and are generalist that will eat anything. This study explores how aspects of the cognitive hierarchy and demographics influence management preferences and willingness to pay for management. Extension offices at Land-Grant Universities participated in a survey of limited resource farmers. The overall response rate for the offices that were able to provide such information was 46%. Statistical analysis revealed that a domination wildlife value orientation, negative attitudes toward feral swine, and income had an effect on respondents' support for all five management actions (hunting, hunting with the assistance of dogs, aerial sharpshooting, trapping and removing, and the use of poison) inquired about (p < .05). A mutualism wildlife value orientation and gender had an effect for two of the management actions (p < .05) and age had no effect on any actions. The amount farmers were willing pay for feral swine management on their lands was analyzed for two groups of farmers; those who had feral swine on their land and did not want them and those who did not have feral swine and wanted to continue to have none. Those with feral swine on their land were more willing to pay to manage feral swine. The amount farmers were willing to pay for both groups was influenced by gender, a negative attitude toward feral swine, and a domination wildlife value orientation. A mutualism wildlife value orientation also had an influence; however, income and age did not. As landowners and government agencies continue efforts to manage feral swine and mitigate the damages they cause the preferences of the landowners should be taken into account. The management actions chosen should reflect the actions supported by farmers in conjunction with cost considerations. If farmers are unwilling or unable to pay for management, then less costly yet also supported management strategies will need to be formulated.