Digital Commons Network^™

Effects Of Mountain Beaver Management And Thinning On 15-Year-Old Douglas Fir Growth And Survival, Dan L. Campbell, Richard M. Engeman, James P. Farley

United States Department of Agriculture Wildlife Services: Staff Publications

We examined 4-year growth of 15-year-old damaged and undamaged Douglas fir (Pseudotsuga menzesii) after integrating temporary population reductions of mountain beaver (Aplodontia rufa) with thinning in a pre-commercial hand-planted plantation in western Washington. Five treatment combinations were considered: (1) trapping mountain beavers in an unthinned area, (2) trapping before thinning to 65 trees/ha (160 trees/ac), (3) no trapping and thinning to 65 trees/ha, (4) no trapping and thinning to 146 trees/ha (360 trees/ac), and (5) no trapping and no thinning. Removal of ≥90 % of mountain beavers temporarily reduced mountain beaver activity whether the stand was unthinned or thinned. Diameter …

Erratum: The Socioecology Of Monk Parakeets: Insights Into Parrot Social Complexity, Elizabeth A. Hobson, Michael L. Avery, Timothy F. Wright

United States Department of Agriculture Wildlife Services: Staff Publications

Our recent work on Monk Parakeets (Myiopsitta monachus) reported dominance steepness values that were inaccurate because of a bug in the analysis program. Updated steepness values are more moderate than initially reported, which places captive Monk Parakeet groups midway between egalitarianism and despotism.

Molecular Assessment Of Translocation And Management Of An Endangered Subspecies Of White-Tailed Deer (Odocoileus Virginianus), Matthew W. Hopken, Tod M. Lum, Paul M. Meyers, Antoinette J. Piaggio

United States Department of Agriculture Wildlife Services: Staff Publications

Translocations are an effectual management strategy for the reestablishment and reconnection of endangered populations and species. However, knowledge about the evolution and ecology of the populations and species of interest are critical so that informed decisions can be made about source populations and reestablishment areas. We employed 614 base pairs of the mitochondrial control region and 15 microsatellite loci to investigate genetic variation, contemporary connectivity, and interspecific hybridization in the two remaining populations of the endangered Columbian white-tailed deer (Odocoileus virginianus leucurus) through comparisons with the closest subspecies, O. v. ochrourus. Our data revealed the dubious taxonomic …

Chemical Repellents Appear Non-Useful For Eliciting Exit Of Brown Tree Snakes From Cargo, Fred Kraus, Randal S. Stahl, William Pitt

United States Department of Agriculture Wildlife Services: Staff Publications

The brown tree snake (Boiga irregularis) is invasive in Guam, has imposed ecological and economic problems there, and threatens to be dispersed via cargo and vehicles to other islands in the Pacific, where it could be expected to inflict similar damages. Prevention of inadvertent snake export currently relies on cargo inspection and suppression of snake populations around ports, which are expensive and incompletely reliable. Hence, there has long been interest in developing additional tools to preclude snakes leaving in cargo, and fumigation with essential oils has been suggested for this role. We tested gaseous or aerosol deliveries of …

Establishing A Definition Of Polar Bear (Ursus Maritimus) Health: A Guide To Research And Management Activities, Kelly A. Park, Colleen Duncan, Pauline Noi, Christian Sonne, Kristin Laidre, Martyn Obbard, Oystein Wiig, Jon Aars, Eric Regehr, Lori L. Gustafson, Todd Atwood

United States Department of Agriculture Wildlife Services: Staff Publications

The meaning of health for wildlife and perspectives on how to assess and measure health, are not well characterized. For wildlife at risk, such as some polar bear (Ursus maritimus) subpopulations, establishing comprehensive monitoring programs that include health status is an emerging need. Environmental changes, especially loss of sea ice habitat, have raised concern about polar bear health. Effective and consistent monitoring of polar bear health requires an unambiguous definition of health. We used the Delphi method of soliciting and interpreting expert knowledge to propose a working definition of polar bear health and to identify current concerns regarding …

Effect Of Travel Distance, Home Range, And Bait On The Management Of Small Indian Mongooses, Herpestes Auropunctatus, William C. Pitt, Robert T. Sugihara, Are R. Berentsen

United States Department of Agriculture Wildlife Services: Staff Publications

Selection of preferred baits to attract mongooses to traps and other control devices is paramount in the effective management and control of this invasive predatory mammal. We examined the attractiveness of selected food items as baits to free-ranging mongooses in field trials at two different habitats on the island of Hawaii. We utilized radio telemetry to calculate mongoose home range and population density estimates. We implanted microchips to remotely identify and record visitations by mongooses to the candidate baits and investigated bait visitation rates, bait attraction distances, and bait discovery times. Mongooses in this study foraged over a wide area …

Dynamics Of Virus Shedding And Antibody Responses In Influenza A Virus-Infected Feral Swine, Hailiang Sun, Fred L. Cunningham, Jillian Harris, Yifei Xu, Li-Ping Long, Katie C. Hanson-Dorr, John A. Baroch, Paul Fioranelli, Mark W. Lutman, Tao Li, Kerri Pedersen, Brandon S. Schmit, Jim Cooley, Xiaoxu Lin, Richard G. Jarman, Thomas J. Deliberto, Xui-Feng Wan

United States Department of Agriculture Wildlife Services: Staff Publications

Given their free-ranging habits, feral swine could serve as reservoirs or spatially dynamic ‘mixing vessels’ for influenza A virus (IAV). To better understand virus shedding patterns and antibody response dynamics in the context of IAV surveillance amongst feral swine, we used IAV of feral swine origin to perform infection experiments. The virus was highly infectious and transmissible in feral swine, and virus shedding patterns and antibody response dynamics were similar to those in domestic swine. In the virus-inoculated and sentinel groups, virus shedding lasted ≤6 and ≤9 days, respectively. Antibody titres in inoculated swine peaked at 1 : 840 on …

Understanding The Physiological Effects Of Suspended Material On Rainbow Trout (Oncorhynchus Mykiss), Tyler J. Weinhardt

Theses and Dissertations (Comprehensive)

The effect of global warming on northern environments is becoming increasingly evident. Melting of underlying permafrost is associated with widespread impacts in these environments. The loss of permafrost results in a destabilizing of underlying sedimentary layers resulting in thermokarst slumping. When this occurs on a large scale (mega-slumping) soil material becomes mobilized and is carried into local streams and rivers. The purpose of this study is to examine the sub-lethal physiological effects that suspended material has on rainbow trout (Oncorhynchus mykiss) in the context of the Peel River Plateau. Juvenile rainbow trout were exposed (following Environment Canada exposure …

The Spirit Of Haudenosaunee Youth: The Transformation Of Identity And Well-Being Through Culture-Based Activism, Bonnie M. Freeman

Theses and Dissertations (Comprehensive)

This dissertation examines the connection between Indigenous knowledge and culture-based action, and how this connection facilitates a sense of identity and well-being for Haudenosaunee youth. This study examines the experience of fourteen Haudenosaunee youth and five parents/adults as they ran for four summers (2005-2008) on a youth-led spiritual journey known as the Unity Run. On this journey youth travelled throughout Haudenosaunee traditional territory (Ontario and Quebec, Canada; and New York State, U.S.A.) and beyond (Virginia, North Carolina, Tennessee) carrying a message of peace, unity and social justice.

The methodology of this research is framed within Haudenosaunee traditional protocols (visiting and …

Investigation Of Low Back And Shoulder Demand During Cardiopulmonary Resuscitation: The Effect Of Different Compression-Ventilation Ratios, Richard Scott Dainty

Theses and Dissertations (Comprehensive)

Background: The current American Heart Association (AHA) standard cardiopulmonary resuscitation (CPR) is performed with a compression-ventilation ratio of 30:2 (standard CPR), meaning 30 compressions are applied to the chest followed by the administration of two breaths to the victim. Some evidence has shown that performing continuous chest compressions rather than standard CPR with breaks in chest compressions for administering breaths, may increase survival rates after cardiac arrest. Cont-CPR has been shown to be very fatiguing in nature, with a significant drop in chest compression force within the first two minutes of CPR. The purpose of this study was to examine …

Examination Of Field Scale Hydrological Processes Under Three Different Tillage Methods In Southern Ontario: Conventional Till (Ct); Modified Till (Mt); And No Till (Nt), Ian Martin

Theses and Dissertations (Comprehensive)

In the wake of the severe algal blooms of 2011 and 2013 in the Great Lakes, international governing bodies such as the United Nations, are advocating for increased studies on nutrient dynamics within agricultural systems. Understanding farm contributions to nutrient loads entering the Great Lakes involves quantifying nutrient export from different tillage practices common in the Great Lakes basin, which include no-till (NT), conventional till (CT) and modified tillage (MT). Understanding differences in nutrient export from different tillage practices may well be related to structural differences in the upper portion of the vadose zone which impact infiltration, soil moisture and …

‘Water Is Life’: Exploring The Relationship Between Place Identity, Water And Adaptive Capacity In Fort Resolution, Northwest Territories, Canada, Jennifer A. Fresque-Baxter

Theses and Dissertations (Comprehensive)

Water is recognised as a fundamental human right in Canada’s Northwest Territories (NWT). However, the current and potential effects of climate change coupled with resource development pressures are leading to concerns about maintaining the health and viability of freshwater in the NWT. These intersecting multiple exposures can have far-reaching impacts for NWT residents who rely on water for cultural, spiritual, economic and social purposes. Ongoing changes (e.g., to water quantity, water quality, weather, precipitation and ice dynamics, for example) will increasingly require NWT residents to adapt, seek ways to plan for the future, identify opportunities, and moderate the effects of …

Stepping Out Of The Dirt: A Case Study Of The Impact Of Reflective Expressive Writing On Male Teens Recently Released From A Closed Custody Facility, April D. King Ms.

Theses and Dissertations (Comprehensive)

When researching the topic of at-risk youth and reflective expressive writing there is little literature to be found. The limited literature that exists with regards to reflective expressive writing is not geared toward a population of at-risk teens (Burton & King, 2004). Although there is literature on alternative programming for at-risk youth (McKee & MacDonald, 2006), very little discusses reflective writing. The research question being addressed is: What is the impact of reflective expressive writing on male teens that have recently been released from a closed custody facility? The aim of this study is to present rich descriptive narratives that …

Embracing The Grey Zone: Navigating Flexible Boundaries At Welcome Inn Community Centre, Carly H. Gaylor

Theses and Dissertations (Comprehensive)

This thesis is an exploration of relationships and issues of professional boundaries at Welcome Inn Community Centre, a faith-based community centre offering programs and services to address issues of poverty in Hamilton, Ontario. Data was gathered through semi-structured qualitative interviews with fifteen staff members, volunteers, and participants at Welcome Inn. A strengths-based perspective combined with mutual relationships and flexible boundaries were found to foster inclusion, acceptance, community building, and personal transformation at Welcome Inn Community Centre; Welcome Inn staff, volunteers, and program participants described these qualities positively. Mixed positive and negative comments were used to describe decision-making and boundaries at …

An Analysis Of Quality For Volunteered Geographic Information, Joel C H Meier

Theses and Dissertations (Comprehensive)

In recent years there has been a growing number of online user communities engaged in the creation, visualization, and use of volunteered geographic information (VGI). These data may represent an untapped resource for researchers analyzing large-area geographic phenomena such as species distributions patterns or land and resource management issues. However very few studies have used VGI for analytic research questions as little is known about the quality of these data. An understanding of the validity of VGI is a prerequisite for further exploitation of these novel data sources in research contexts. This paper looks to identify key issues related to …

The Lived Experiences Of Sandwich Generation Women And Their Health Behaviours, Allison Steiner

Theses and Dissertations (Comprehensive)

Sandwich generation caregivers simultaneously provide care to their aging parents/in-laws and at least one child under 18 years living in the home (Sinha, 2013). In 2012, 2.23 million Canadians were considered sandwiched caregivers. This group is expected to grow as individuals are delaying marriage, resulting in delayed childrearing (Robinson, Barbee, Martin, Singer, Yegidis, 2003). Further, the government has been advocating for caregiving to move from formal to informal caregiving. Although this would help the government immensely, this creates challenges for middle-aged adults occupying multiple roles. The purpose of this study was to explore the lived experiences of sandwich generation women …

Affective Migration: The Role Of Food Preparation And Visceral Experience For Egyptian Migrant Women Settling In The Region Of Waterloo, Mary Neil

Theses and Dissertations (Comprehensive)

This study examining Egyptian migrants settling in Canada is exploratory in nature and is intended to initiate a conversation about the personal experience of transnationalism and the value of the body as an instrument of research. A semi-structured interview approach was designed to prompt the evocation of deep personal thoughts, experiences, and sensations in response to questions surrounding migration to Canada through the shared performative act of cooking and the visceral experience of eating in the private space of the migrant kitchen. Using a grounded theory approach, several adaptive mechanisms were identified such as the creation of manageable daily routines, …

“Where Did I Learn That?” Exploring The Similarity Effect And Children’S Use Of Memory Cues For Source Monitoring, Leanne E. Bird

Theses and Dissertations (Comprehensive)

An individual’s ability to accurately monitor source (attribute known or remembered information to its particular source or origin) develops gradually throughout childhood. Along with task difficulty (i.e., delay between encoding and retrieval), source similarity is among the utmost hindrance to individuals’ ability to accurately monitor source; specifically, the greater the similarity between sources the more difficult source monitoring judgments have been found to be, and the smaller similarity between sources (i.e., the greater number of differences between sources) the more accurate source monitoring judgments have been found to be. The similarity effect has been said to apply to all age …

A Living Wage For All Manitobans?: Perspectives From The Private Sector, Paul Campbell Sheridan

Theses and Dissertations (Comprehensive)

In response to the growing problem of working poverty around the world, a grassroots movement has emerged and spread internationally in the last two decades. This movement proposes the adoption of living wage policies and practice as part of a comprehensive poverty reduction strategy in the context of the neoliberal retrenchment of social safety nets. While successful at the local government level in the USA and the U. K., the movement has struggled to make inroads into the private sector, which is where the bulk of sub-living-wage jobs are situated. Using a qualitative methodology informed by critical theory, this study …

The Felt Sense Of Interconnectedness: A Qualitative Analysis Of Perceptions On Finding Resilience In The Aftermath Of Trauma Using The Mind-Body Connections Of Yoga, Ashley Collette

Theses and Dissertations (Comprehensive)

Members and veterans of the military are at an increased risk of exposure to traumatic experiences due to the very nature of their occupation. The most recent statistics on Canada’s deployment to Afghanistan show that 13.2% of the (Canadian Armed Forces (CAF) members deployed have been diagnosed with a mental injury within a five year follow up period of redeployment from the theatre of operations. The present preliminary study was designed to examine Yoga as a therapeutic intervention for trauma in a population of CAF members and veterans. The author interviewed 4 service providers and 2 service users of Yoga-based …

An Athletic Approach To Studying Perception-Action Integration: Does Sport-Specific Training, And The Impact Of Injury, Influence How Individuals Visually Guide Navigation?, Carmen Baker, Jennifer Campos Ph.D, Michael E. Cinelli Ph.D.

Theses and Dissertations (Comprehensive)

The objective of this thesis was to investigate perception-action integration capabilities of individuals during a choice navigation task. This task assessed navigation strategies in open space while individuals avoided colliding with two vertical obstacles that created a body-scaled, horizontal gap, at three varying obstacle distances from the starting location (3m, 5m, 7m). The two studies completed in this thesis employed the same paradigm to assess the hypothesized group differences. Gaze behaviours and kinematics of navigation strategies were compared between: 1) athletes specifically trained in navigating in open space versus non-athletes; and 2) athletes with post-concussion syndrome (PCS) versus non-concussed, specifically …

Community Detection Detailed For Online Social Networks, Christopher J. Hogan

Theses and Dissertations (Comprehensive)

Ever since the internet became publicly available it has allowed users to interact with each other across virtual networks. With this large amounts of data being collected the clustering of this information has become an even more powerful tool for recognize patterns and trends in a network. In this research we look build a model for Community Detection in these online social networks. We combine the ideas from both discrete mathematics and sociology, to build an algorithm with the specific intent on discovering communities that exist in an online social network. We present many of the sociology theories behind the …

Transient Trunk Flexion: The Potential To Alleviate Low Back Pain During Prolonged Standing, Danielle M. Stewart

Theses and Dissertations (Comprehensive)

The current study examined potential benefits of intermittent, short-term periods of full trunk flexion on the development of low back pain (LBP) over two hours of standing. Sixteen participants completed a 2-hour standing protocol, on two separate days. On one day, participants stood statically for 2 hours; on the other day participants bent forward to full spine flexion for 5 seconds every 15-minutes. During both protocols, participants reported LBP using a 100mm visual analogue scale every 15-minutes. During the flexion trials, erector spinae muscle activation was monitored. Ultimately, intermittent trunk flexion reduced LBP by 36% (10mm) at the end of …

Police On Camera: The Impact Of Watching User-Generated Police Videos On Students’ Attitudes Towards The Police, Daniel N. Smith

Theses and Dissertations (Comprehensive)

This research investigated the impact of user-generated videos on students’ attitudes towards the police. A survey was conducted at Wilfrid Laurier University in Brantford and was administered to 200 students consisting of a number of control variables such as age, race, police contact, and neighbourhood context, along with measurements of attitudes towards the police. It measured online video viewing habits along with familiarity of three online videos. Multivariate analysis showed that watching user generated videos had little to no impact on students attitudes towards the police. The analysis showed that police contact was the most influential factor in impacting attitudes …

The Team Approach To The Psychological Rehabilitation Of Injured Athletes: What Is The Coach’S Role Anyway?, Leanne Smith

Theses and Dissertations (Comprehensive)

Abstract

The purpose of the study was to gain an understanding of the role of the coach in the recovery of injured youth athletes. Using qualitative methods, the experiences of 11 male coaches of male youth athletes (14-18 years) in competitive football, basketball, and hockey teams, in five Ontario communities were examined. Data were collected through a demographic questionnaire, interviews, and researcher field notes. Three themes emerged through analysis (communication, support and structure, and knowledge of the individual athlete) that suggested coaches contributed to both the physical and psychological recovery of their athletes, as part of a team that also …

Masjids, Ashrams And Mazars: Transnational Sufism And The Bawa Muhaiyaddeen Fellowship, Merin Shobhana Xavier

Theses and Dissertations (Comprehensive)

The Bawa Muhaiyaddeen Fellowship is a community that formed in relation to the Tamil teacher Muhammad Raheem Bawa Muhaiyaddeen (d. 1986). Bawa’s teachings attracted diverse followers- those with Islamic inclinations, those from Jewish, Hindu and Christian backgrounds, and those seeking to transcend religious creeds. With his passing and no appointed successor, the communities that developed during Bawa Muhaiyaddeen’s lifetime rely now on the institutions and spaces established by him. These include a mosque and burial shrine (mazar) in Pennsylvania and an ashram and shrine in Sri Lanka. This case study of the Bawa Muhaiyaddeen Fellowship and its parallel …

Promoting Fairness In The Workplace: Identifying And Overcoming The Barriers To Managerial Fairness In Organizations, David B. Whiteside

Theses and Dissertations (Comprehensive)

Research examining “justice as a dependent variable” has largely focused on examining the factors that can promote fairness in the workplace whereas significantly less attention has been devoted to understanding the barriers and obstacles that can exist throughout the fairness process. This is an important gap in the literature because the absence of fairness can also have considerable implications for organizations. In this dissertation, I argue that it is important to adopt a “barriers to fairness” approach that sheds more light on how these obstacles can affect managers’ fair behavior. Specifically, I present a typology of the different barriers to …

Exploring Interactions Between Police And People With Mental Illness, Krystle L. Shore Ms.

Theses and Dissertations (Comprehensive)

Contact between people with mental illness (PMI) and police is on the rise. The current study analyzed a six-month period of official police data (N = 400 occurrences) to provide a description of the PMI that came into contact with police and the typical characteristics and outcomes of these encounters. Results indicated that these interactions were initiated by family members and are taking place at home. Police are most commonly resolving the situations formally with apprehensions under the Mental health Act (55%), however only half of the time these apprehensions result in the PMI being admitted into hospital care, …

The Application Of Hand Switch Costs Towards Understanding Bimanual Movements: An Investigation Throughout The Lifespan, Gordon Young

Theses and Dissertations (Comprehensive)

The objective of the present study was to examine the different kind of switch costs among a varied population using a modified bimanual serial reaction time task. Alternating between responses produce a cost of increased response time, which is termed a switch cost. However, not all switch costs are equal, and its effect on response time is dependent on what previous hand and digit combination was utilized. A detachable touchscreen tablet PC running a custom built JavaScript based software prompted participants to press down with their digits (2^nd-5^th) to corresponding buttons which would light up in …

Impact Of Biofilm Formation And Composition On Antibiotic Resistance In Environmental Isolates Of Escherichia Coli And Salmonella Spp., Raluca Tutulan

Theses and Dissertations (Comprehensive)

Escherichia coli and Salmonella spp., like most bacteria, prefer to grow in biofilms. These biofilms provide bacteria with protection from harsh environmental factors (such as desiccation and changes in pH), aid in the evasion of host immune responses and provide increased antibiotic resistance. Biofilms are present in non-host environments (e.g. water pipes) as well as in mammalian hosts (in the healthy gastrointestinal microbiota and in over 65% of nosocomial infections). Two important components utilized by E. coli and Salmonella spp. to form biofilms are cellulose and curli fimbriae. Curli fimbriae mediate the attachment of bacteria to abiotic surfaces and …