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Evaluating Habitat Manipulations And Rodenticides To Protect Seedlings From Rodent Damage At Restored Landfills In New York, Gary W. Witmer

United States Department of Agriculture Wildlife Services: Staff Publications

Solid waste landfills have become rather commonplace in urbanized and industrialized regions of the world. If designed, managed, and restored properly, they can be converted to useful land uses. However, restoration of woody vegetation can be difficult when animal damage occurs. Numerous species of voles occur throughout the northern hemisphere and several may become serious pests of restoration plantings at high population density, increasing the expense and difficulty of establishing targeted plant communities. We anticipated that meadow voles (Microtus pennsylvanicus) were responsible for causing the majority of damage to seedlings planted on restored landfill sites in Brooklyn, New …

Mutation From Arginine To Lysine At The Position 189 Of Hemagglutinin Contributes To The Antigenic Drift In H3n2 Swine Influenza Viruses, Jianqiang Ye, Yifei Xu, Jillian Harris, Hailiang Sun, Andrew S. Bowman, Fred L. Cunningham, Carol Cardona, Kyoungjin J. Yoon, Richard D. Slemons, Xiu-Feng Wan

United States Department of Agriculture Wildlife Services: Staff Publications

Two distinct antigenic clusters were previously identified among the H3N2 swine influenza A viruses (IAVs) and were designated H3N2SIV-alpha and H3N2SIV-beta (Feng et al., 2013. Journal of Virology 87(13), 7655–7667). A consistent mutation was observed at the position 189 of hemagglutinin (R189K) between H3N2SIV-alpha and H3N2SIV-beta fair isolates. To evaluate the contribution of R189K mutation to the antigenic drift from H3N2SIV-alpha to H3N2SIV-beta, four reassortant viruses with189R or189K were generated. The antigenic cartography demonstrated that the R189K mutation in the hemagglutinin of H3N2IAV contributed to the antigenicdrift, separating these viruses into H3N2SIV-alpha to H3N2SIV- beta. This R189K mutation was also …

Managing Airport Stormwater To Reduce Attraction To Wildlife, Bradley F. Blackwell, David Felstul, Thomas W. Seamans

United States Department of Agriculture Wildlife Services: Staff Publications

An airport is a component of the landscape. contributing to and subject to local- and landscapelevel factors that affect wildlife populations and the hazards that these species pose to aviation (Blackwell et al. 2009, Martin et al. 2011). Water resources at and near an airport, in the form of both surface water and contained runoff, are recognized by the Federal Aviation Administration (FAA) as potential attractants to wildlife that pose hazards to aviation safety (FAA 2007). Surface water, including aboveground stormwater detention/retention facilities (see U.S. Environmental Protection Agency 2006). can represent a substantial proportion of the area within siting criteria …

Understanding Animal Movements At And Near Airports, Jerrold L. Belant, Brian E. Washburn, Travis L. Devault

United States Department of Agriculture Wildlife Services: Staff Publications

Understanding movements of hazardous wildlife species at and near airports is critical to formulating effective management strategies for reducing aviation risk. Animal movements vary daily, seasonally, and annually and are based on broad biological and ecological concepts, including foraging, reproduction, habitat characteristics, dispersal, and migration. As an energy conservation strategy. most animals minimize their movements to meet life requisites, which in turn presumably improves fitness. Animal movements in relation to airports can be direct; for example, Canada geese (Branta canadensis) flying onto an airfield because grass height and composition are suitable for loafing sites and as food. Animal …

Report To The Chicago Park District On Conflicts With Ring-Billed Gulls And The 2013 Integrated Ring-Billed Gull Damage Management Project, J. W. Hartmann, T. G. Guerrant, S. F. Beckerman, R. M. Engeman, T. W. Seamans

United States Department of Agriculture Wildlife Services: Staff Publications

The large ring-billed gull (Larus delawarensis) population in the City of Chicago has caused various conflicts including general nuisance, property damage, economic losses, and threats to human health and safety. Several studies have shown a relationship between ring-billed gulls and increased levels of fecal indicator bacteria (FIB) such as Escherichia coli (E. coli) in nearshore waters. Results of tests for E. coli have led to the issuance of swim advisories at Chicago beaches.

The objectives of the Chicago Ring-billed Gull Damage Management Project were to (1) reduce the local production of ring-billed gulls, (2) reduce the severity of …

Wild Ungulates As Disseminators Of Shiga Toxin- Producing Escherichia Coli In Urban Areas, Alan B. Franklin, Kurt C. Vercauteren, Hugh Maguire, Mary K. Cichon, Justin W. Fischer, Michael J. Lavelle, Amber Powell, J. Jeffrey Root, Elaine Scallan

United States Department of Agriculture Wildlife Services: Staff Publications

Background: In 2008, children playing on a soccer field in Colorado were sickened with a strain of Shiga toxin-producing Escherichia coli (STEC) O157:H7, which was ultimately linked to feces from wild Rocky Mountain elk. We addressed whether wild cervids were a potential source of STEC infections in humans and whether STEC was ubiquitous throughout wild cervid populations in Colorado.

Methodology/Principal Findings: We collected 483 fecal samples from Rocky Mountain elk and mule deer in urban and non-urban areas. Samples testing positive for STEC were higher in urban (11.0%) than non-urban (1.6%) areas. Elk fecal samples in urban areas had a …

State-Level Approaches To Managing The Use Of Contraceptives In Wildlife In The United States, John D. Eisemann, Jeanette R. O'Hare, Kathleen A. Fagerstone

United States Department of Agriculture Wildlife Services: Staff Publications

Several fertility control agents have recently been registered with the United States Environmental Protection Agency for management of wildlife or other free-ranging animals. The registration of GonaConTM Immunocontraceptive Vaccine for use in white-tailed deer (Odocoileus virginianus) and OvoControl for use in Canada geese (Branta canadensis) and pigeons (Columba livia) has caused state wildlife and land management agencies to review their regulatory authority over the use of contraceptives in wildlife. As a result, many states are taking steps to ensure legislation or policies are current with emerging technologies. This article examines the various approaches states are …

Deer-Activated Bioacoustic Frightening Device Deters White-Tailed Deer, Aaron M. Hildreth, Scott E. Hygnstrom, Kurt C. Vercauteren

United States Department of Agriculture Wildlife Services: Staff Publications

White-tailed deer (Odocoileus virginianus) damage urban and suburban plantings, as well as crops and stored feed. We tested the efficacy of a frightening device that played pre-recorded distress calls of adult female white-tailed deer when activated by an infrared motion sensor for a period of 13 days. This deer-activated bioacoustic frightening device reduced deer entry into protected sites by 99% (δ = -558, P = 0.09) and bait consumption by 100% (δ = -75, P = 0.06). The frightening device that we evaluated demonstrated potential for reducing damage in disturbed environments and agricultural settings.

Tactile And Auditory Repellents To Reduce Wildlife Hazards To Aircraft, Thomas W. Seamans, James A. Martin, Jerrold L. Belant

United States Department of Agriculture Wildlife Services: Staff Publications

Wildlife within the airport environment are hazards to human safety. Lethal removal of targeted individuals reduces the immediate threat, but other approaches should be integrated into control programs to make them more effective and to help meet legal and ethical considerations (Dolbeer et al. 1995). When negative media attention, special in terest groups, or calls for restrictive legislation influence public opinion, the resulting public pressure can preclude effective wildlife management and lead to subsequent population control problems (Torres et al. 1996, Coolahan and Snider 1998, Conover 2001). Nonlethal management activities to reduce wildlife use of airports may include habitat modifi …

Anthropogenic And Physiologically Induced Stress Responses In Captive Coyotes, Christopher J. Schell, Julie K. Young, Elizabeth V. Lonsdorf, Rachel M. Santymire

United States Department of Agriculture Wildlife Services: Staff Publications

Repeated stressful events can negatively impact overall health by continuous stimulation of the hypothalamic– pituitary–adrenal axis, which leads to depletion of glucose stores and suppression of immune and reproductive function. The influence of stressors on survivability is particularly salient for coyote (Canis latrans) populations, because understanding how coyotes cope with stressors may provide relevant context on coyote adaptation to urbanized ecosystems. Our objectives were to physiologically validate fecal glucocorticoid metabolite (FGM) analysis in coyotes by performing an adrenocorticotropic hormone (ACTH) challenge in 12 captive individuals (6 treatment and 6 control) housed at the United States Department of Agriculture …

Short-Term Exercise Training Improves Insulin Sensitivity But Does Not Inhibit Inflammatory Pathways In Immune Cells From Insulin-Resistant Subjects, Sara M. Reyna, Puntip Tantiwong, Eugenio Cersosimo, Ralph A. Defronzo, Apiradee Sriwijitkamol, Nicolas Musi

School of Medicine Publications

Background. Exercise has an anti-inflammatory effect against, and immune cells play critical roles in the development, of insulin resistance and atherosclerotic vascular disease (AVD). Thus, the goal of this study was to determine whether exercise improves insulin sensitivity in insulin-resistant subjects by downregulating proinflammatory signaling in immune cells.

Methods. Seventeen lean, 8 obese nondiabetic, and 11 obese type 2 diabetic individuals underwent an aerobic exercise program for 15 days and an insulin clamp before and after exercise. Peripheral mononuclear cells (PMNC) were obtained for determination of Toll-like receptor (TLR) 2 and 4 protein content and mitogen-activated protein kinase phosphorylation.

Results. …

Large-Scale Rodent Control Reduces Pre- And Post-Dispersal Seed Predation Of The Endangered Hawaiian Lobeliad, Cyanea Superba Subsp. Superba (Campanulaceae), Richard J. Pender, Aaron B. Shiels, Lalasia Bialic-Murphy, Stephen M. Mosher

United States Department of Agriculture Wildlife Services: Staff Publications

Large-scale rodent control can help to manage endangered species that are vulnerable to invasive rodent consumption. A 26 ha rodent snap-trap grid was installed in montane forest on Oahu Island, Hawaii, in order to protect endangered snails and plants. To assess the effectiveness of this trapping operation in reducing fruit consumption and seed predation of the endangered Hawaiian lobeliad, Cyanea superba subsp. superba, pre- and post-dispersal C. superba fruit consumption were monitored for 36 plants at the site with rodent control (Kahanahaiki) and 42 plants at an adjacent site without rodent control (Pahole).Over 47 % of all monitored fruit …

Is Propagule Size The Critical Factor In Predicting Introduction Outcomes In Passeriform Birds?, Michael P. Moulton, Wendell P. Cropper Jr., Michael L. Avery

United States Department of Agriculture Wildlife Services: Staff Publications

Influential analyses of the propagule pressure hypothesis have been based on multiple bird species introduced to one region (e.g. New Zealand). These analyses implicitly assume that species-level and site-level characteristics are less important than the number of individuals released. In this study we compared records of passerine introductions with propagule size information across multiple regions (New Zealand, Australia, and North America). We excluded species introduced to just one of the three regions or with significant uncertainty in the historical record, as well as species that succeeded or failed in all regions. Because it is often impossible to attribute success to …

Landslides Cause Spatial And Temporal Gradients At Multiple Scales In The Luquillo Mountains Of Puerto Rico, Aaron B. Shiels, Lawrence R. Walker

United States Department of Agriculture Wildlife Services: Staff Publications

Landslides represent one of the most severe disturbances in montane forests because the main consequence of their occurrence is loss or downslope redistribution of the majority of the above- and below-ground biomass. We examined among-landslide gradients (size, slope, aspect, age, elevation) on 142 landslides in the Luquillo Mountains, Puerto Rico, created by three storms in 2003–2004. We also examined within-landslide gradients (top to bottom, edge to center, successional development) by reviewing 20 yr of landslide data in the Luquillo Mountains. Landslide abundance and plant successional patterns do not closely reflect the elevation gradient that is characteristic of this mountain range, …

References From Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

No abstract provided.

Index From Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

No abstract provided.

Glossary From Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

No abstract provided.

Chapter 7 Large Scales And Future Directions For Landslide Ecology From Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

1. Landslide ecology is an emerging discipline that provides insights into both scientific and management issues. Scientifically, it explores nutrient cycling and soil development, plant physiological adaptations, dispersal and colonization dynamics, novel mixes of native and nonnative species, and successional trajectories in an often inhospitable environment. Landslide ecology also integrates biological aspects of landslides into efforts to manage slope hydrology, soil erosion, and the stabilization of slopes.

2. Human-landslide interactions are becoming more common as human populations expand into mountainous terrain and climate change increases landslide frequency.

3. A landscape-level approach to landslide rehabilitation integrates topography, broad-scale climatic conditions, landslide …

Chapter 6 Living With Landslides For Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

1. Human interactions with landslides have become more frequent and lethal as our populations expand into less stable terrain. This trend suggests that we must better understand what causes landslides and how to mitigate future damage.

2. Disturbances created by road construction, urban expansion, forestry, and agriculture are major contributors to anthropogenic landslides, and each has increased in frequency during the last several decades.

3. The field of landslide risk assessment is growing rapidly, and many new mapping and modeling tools are addressing how to predict landslide frequency and severity. Mitigation of landslide damage is also improving, particularly when new …

Chapter 4 Biological Consequences For Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

1. Landslide colonists have adaptations to survive low-nutrient, unstable substrates, where they may also experience temperature and water stress. Many of the species that colonize landslides are found exclusively in disturbed habitats and are known as gap specialists. Other colonists are common species in the adjacent undisturbed environment where their proximity to the landslide may have enabled rapid dispersal.

2. Microbes (including bacteria and fungi) are probably the first organisms to disperse to and colonize landslides. Symbiotic relationships, such as lichens, and plants with mycorrhizal fungi or nitrogen fixing bacteria, represent adaptations for survival in newly exposed, lownutrient landslide substrates. …

Chapter 3 Physical Causes And Consequences For Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

1. The propensity for a landslide to occur is largely determined by potential slip planes, or weakness planes in the geological substrate, where the driving forces exceed resisting forces.

2. Landslide occurrence across the landscape is often unpredictable; substrates can be resistant to slippage for centuries and then suddenly experience instability that may result from human or non-human changes that disrupt the balance between driving and resisting forces at a slip plane.

3. Post-landslide erosion is common and can contribute as much as 33% of the total sediment loss from the site of landslide initiation. Such post-landslide erosion can continue …

Introduction For Landslide Ecology, Lawrence R. Walker, Aaron B. Shiels

United States Department of Agriculture Wildlife Services: Staff Publications

1. The geological characteristics of landslides and their management as physical hazards are well documented. In contrast, the ecological processes that are initiated by landslides, and their relevance to efforts to restore stability to unstable slopes, have never been synthesized.

2. Landslides can cause intense human suffering and human activities can aggravate natural causes oflandslides. However, we can ameliorate many of the worst effects of landslides through improved prediction and restoration of landslides and adjoining slopes.

3. Landslides initiate many ecological processes at landscape to local scales, including the process of ecological succession. Although landslides have negative effects on the …

Wildlife In Airport Environments: Understanding Animal Movements At And Near Airports, Jerrold L. Belant, Brian E. Washburn, Travis L. Devault

United States Department of Agriculture Wildlife Services: Staff Publications

Understanding movements of hazardous wildlife species at and near airports is critical to formulating effective management strategies for reducing aviation risk. Animal movements vary daily, seasonally, and annually and are based on broad biological and ecological concepts, including foraging, reproduction, habitat characteristics, dispersal, and migration. As an energy conservation strategy, most animals minimize their movements to meet life requisites, which in turn presumably improves fitness. Animal movements in relation to airports can be direct; for example, Canada geese (Branta canadensis) flying onto an airfield because grass height and composition are suitable for loafing sites and as food. Animal movements in …

Wildlife In Airport Environments: Chapter 4 Tactile And Auditory Repellents To Reduce Wildlife Hazards To Aircraft, Thomas W. Seamans, James A. Martin, Jerrold L. Belant

United States Department of Agriculture Wildlife Services: Staff Publications

Wildlife within the airport environment are hazards to human safety. Lethal removal of targeted individuals reduces the immediate threat, but other approaches should be integrated into control programs to make them more effective and to help meet legal and ethical considerations (Dolbeer et al. 1995). When negative media attention, special interest groups, or calls for restrictive legislation influence public opinion, the resulting public pressure can preclude effective wildlife management and lead to subsequent population control problems (Torres et al. 1996, Coolahan and Snider 1998, Conover 2001). Nonlethal management activities to reduce wildlife use of airports may include habitat modification, exclusion …

Wildlife In Airport Environments: Chapter 5 Excluding Mammals From Airports, Kurt C. Vercauteren, Michael J. Lavelle, Thomas W. Seamans

United States Department of Agriculture Wildlife Services: Staff Publications

To ensure aircraft safety, it is critical to exclude large mammal species such as deer (Odocoileus spp.), feral swine (Sus scrota), and coyotes (Canis latrans) from airport environments, as well as to consider thoroughly and carefully all available management methods. Airports are often located on or adjacent to undeveloped land that provides habitat for various species large enough to pose a direct hazard to aircraft. Unoccupied expanses of forage near runways provide deer with sufficient incentive to leave cover and occupy airport lands. Associated risk and tragic collisions have ranked deer as the most hazardous …

Wildlife In Airport Environments: Chapter 3 Effectiveness Of Chemical Repellents In Managing Birds At Airports, Larry Clark, Michael L. Avery

United States Department of Agriculture Wildlife Services: Staff Publications

Repellents include methods and devices used to manipulate behavior of animals to reduce damage or nuisance. Critical to the design and success of repellents is understanding how sensory modalities mediate perception of signals, and how ecological context and sensory inputs influence animal learning. A repellent's success is tied to the axiom of using the proper tool for the proper job. When repellents "fail," it is almost always because wildlife managers have not appropriately matched signal, receiving systems, message, and context. Reconciling such considerations can be a complex process. In this chapter we review components and processes essential for the successful …

“It Feels Like Home”: The Impacts Of Supportive Housing On Male Youth – Perspectives Of Youth And Service Providers At Five Beds To Home, Sarah Michelle Ogden

Theses and Dissertations (Comprehensive)

This study identifies the impacts of supportive housing on the lives of male youth. The researcher studied the Five Beds to Home (Five Beds) supportive housing facility for male youth, located in Cambridge, Ontario. The study focused on two areas: one, the current engagement of tenants and second, the long term impacts on past tenants. Impacts include areas such as progress on or achievement of goals/overcoming challenges, employment and education status, happiness and health, and housing stability. The general research questions were as follows: 1) What are the impacts of supportive housing on the lives of male youth?, 2) What …

"Emotional Landscapes" And The Value Of Sex: Exploring The Lived Experiences Of Sex Workers' Clients, Zoey K. Jones

Theses and Dissertations (Comprehensive)

Clients of sex workers face criminalization and stigmatization in Canada and across the globe; they are commonly depicted by their stereotypes in entertainment and news media and have become a more visible population with the advent of the internet and online erotic review boards. However, these people are infrequently represented by their own voices and stories in academic research and, as such, the reality of being a client is not encompassed by the existing literature. An accurate and comprehensive understanding of the sex industry is particularly important in the twenty-first century, as the laws surrounding sex work in Canada – …

Agency Or Agencies? Catalysts Of Resilience In Drop-In Participants, Andy D. Bayer

Theses and Dissertations (Comprehensive)

In this thesis, the factors that contribute to resilience are explored in a sample of participants who attend a food bank/clothing bank drop-in program in North Hamilton, Ontario. Resilience is defined as obtaining positive outcomes despite a level of risk to development. This thesis expands on the literature clarifying the concept of resilience. This thesis also contributes importantly to the smaller amount of literature on resilience in adults and older adults. Purposive sampling was used to obtain participants from the drop-in program at which the researcher volunteers. Phenomenology was utilized for this research, semi-structured interviews were used for data collection, …

"The Road Less Travelled;" Women's Journeys To Community Leadership In The Waterloo Region, Lyndsey A. Butcher

Theses and Dissertations (Comprehensive)

The purpose of this research study is to explore the experiences of women within the Region of Waterloo along their journeys to community leadership. The literature review reveals the predominance of deficits-based research on the barriers preventing women from attaining positions of leadership and a significant gap in scholarship on female community leaders. This qualitative study consisted of semi-structured interviews with 15 female community leaders. It was influenced by an intersectional feminist perspective and used a constructivist grounded theory approach. The findings of this study offer three groups of related factors that can encourage, support and recognize the increasing number …