Open Access. Powered by Scholars. Published by Universities.®
- Publication
- Publication Type
Articles 1 - 11 of 11
Full-Text Articles in Entire DC Network
Effects Of Coyote Population Reduction On Swift Fox Demographics In Southeastern Colorado, Seija M. Karki, Eric M. Gese, Mead L. Klavetter
Effects Of Coyote Population Reduction On Swift Fox Demographics In Southeastern Colorado, Seija M. Karki, Eric M. Gese, Mead L. Klavetter
United States Department of Agriculture Wildlife Services: Staff Publications
The distribution and abundance of swift foxes (Vulpes velox) has declined from historic levels. Causes for the decline include habitat loss and fragmentation, incidental poisoning, changing land use practices, trapping, and predation by other carnivores. Coyotes (Canis latrans) overlap the geographical distribution of swift foxes, compete for similar resources, and are a significant source of mortality amongst many swift fox populations. Current swift fox conservation and management plans to bolster declining or recovering fox populations may include coyote population reduction to decrease predation. However, the role of coyote predation in swift fox population dynamics is not …
Does Interference Competition With Wolves Limit The Distribution And Abundance Of Coyotes?, Kim Murray Berger, Eric M. Gese
Does Interference Competition With Wolves Limit The Distribution And Abundance Of Coyotes?, Kim Murray Berger, Eric M. Gese
United States Department of Agriculture Wildlife Services: Staff Publications
1. Interference competition with wolves Canis lupus is hypothesized to limit the distribution and abundance of coyotes Canis latrans, and the extirpation of wolves is often invoked to explain the expansion in coyote range throughout much of North America.
2. We used spatial, seasonal and temporal heterogeneity in wolf distribution and abundance to test the hypothesis that interference competition with wolves limits the distribution and abundance of coyotes. From August 2001 to August 2004, we gathered data on cause-specific mortality and survival rates of coyotes captured at wolf-free and wolf-abundant sites in Grand Teton National Park (GTNP), Wyoming, USA, …
Does Interference Competition With Wolves Limit The Distribution And Abundance Of Coyotes?, Kim Murray Berger, Eric M. Gese
Does Interference Competition With Wolves Limit The Distribution And Abundance Of Coyotes?, Kim Murray Berger, Eric M. Gese
United States Department of Agriculture Wildlife Services: Staff Publications
1. Interference competition with wolves Canis lupus is hypothesized to limit the distribution and abundance of coyotes Canis latrans, and the extirpation of wolves is often invoked to explain the expansion in coyote range throughout much of North America.
2. We used spatial, seasonal and temporal heterogeneity in wolf distribution and abundance to test the hypothesis that interference competition with wolves limits the distribution and abundance of coyotes. From August 2001 to August 2004, we gathered data on cause-specific mortality and survival rates of coyotes captured at wolf-free and wolf-abundant sites in Grand Teton National Park (GTNP), Wyoming, USA, …
Cameras, Coyotes, And The Assumption Of Equal Detectability, Eveline Se Quin Larrucea, Peter F. Brussard, Michael M. Jaegar, Reginald H. Barrett
Cameras, Coyotes, And The Assumption Of Equal Detectability, Eveline Se Quin Larrucea, Peter F. Brussard, Michael M. Jaegar, Reginald H. Barrett
United States Department of Agriculture Wildlife Services: Staff Publications
Remote cameras are an increasingly important tool in management and wildlife studies. However, we often do not know if they provide an unbiased sample of populations. Using a marked, radio-collared population of coyotes (Canis latrans) of known social status, we evaluated the influence of temporal (daily and seasonal) and spatial (distance between units, habitat, and proximity to human structures) factors on vulnerability to photo-captures. During 8 unbaited camera sessions of 6 weeks each, we obtained 158 coyote photographs at a photo-capture success rate of 1.6%. We were able to identify not only marked individuals, but also a number …
Suburban Coyote Management And Research Needs: A Northeast Perspective, Paul D. Curtis, Daniel A. Bogan, Gordon Batcheller
Suburban Coyote Management And Research Needs: A Northeast Perspective, Paul D. Curtis, Daniel A. Bogan, Gordon Batcheller
Wildlife Damage Management Conference Proceedings
Several factors may be responsible for increasing predator abundance in suburbia. These include an enhanced forage base associated with residential sprawl, and protection of predator species that were once persecuted and suppressed by hunters, trappers, and landowners. In the Northeast, anecdotal reports of coyotes (Canis latrans) killing pets in backyards are on the rise. The bulk of coyote complaints, concerns, and questions received from the public by state wildlife agencies are from areas with high human populations. Scant research exists on coyote behavioral ecology in human-altered landscapes. Biologists and managers need to understand changes in the social structure …
Coyote Investigative Behavior Following Removal Of Novel Stimuli, Daniel J. Heffernan, William F. Andelt, John A. Shivik
Coyote Investigative Behavior Following Removal Of Novel Stimuli, Daniel J. Heffernan, William F. Andelt, John A. Shivik
United States Department of Agriculture Wildlife Services: Staff Publications
Because coyotes (Canis latrans) show an aversion to novel objects, we examined the effects of the presence and removal of repellent and attractive stimuli on coyote behavior. We found a greater proportion of captive coyotes investigated 10-cm-tall cones (0.95) compared to 90-cm-tall cones (0.68) and control sites (0.81), and spent longer periods (P , 0.001 in all instances) investigating small cones (x̅ = 465 sec), compared to large cones (x̅ = 212 sec) and control sites (x̅ = 45 sec). However, investigation times at sites following removal of large cones were 1.6 and 2.3 times …
Missing Cats, Stray Coyotes: One Citizen’S Perspective, Judith C. Webster
Missing Cats, Stray Coyotes: One Citizen’S Perspective, Judith C. Webster
Wildlife Damage Management Conference Proceedings
The author explores the issue of urban coyotes and coyote management from a cat owner’s perspective, with specific examples from Vancouver, B.C., Canada. Following a personal encounter with two coyotes in July 2005 that led to the death of a cat, the author has delved into the history of Vancouver’s “Co-existing with Coyotes”, a government-funded program run by a nonprofit ecological society. The policy’s roots in conservation biology, the environmental movement, and the human dimensions branch of wildlife management are documented. The author contends that “Co-existing with Coyotes” puts people and pets at greater risk of attack by its inadequate …
Bad Dogs: Why Do Coyotes And Other Canids Become Unruly?, Robert H. Schmidt, Robert M. Timm
Bad Dogs: Why Do Coyotes And Other Canids Become Unruly?, Robert H. Schmidt, Robert M. Timm
Wildlife Damage Management Conference Proceedings
We summarize the behavior of several species of canids (coyotes, dingoes, and gray wolves) in relation to their habituation to humans and to human food sources. Striking parallels exist between coyotes and other wild canids in terms of the inclination of individual animals to act aggressively toward humans and even attack, once they have come to associate humans with food. We describe the stages of coyotes’ behavioral adaptation to suburban ecosystems, listing 7 steps toward increasing habituation, which can be used as action thresholds for invoking active coyote management or removal efforts. We consider the hypothesis that coyotes may regard …
Complexities Of Urban Coyote Management: Reaching The Unreachable, Teaching The Unteachable, And Touching The Untouchable, Robert H. Schmidt
Complexities Of Urban Coyote Management: Reaching The Unreachable, Teaching The Unteachable, And Touching The Untouchable, Robert H. Schmidt
Wildlife Damage Management Conference Proceedings
Urban coyote (Canis latrans) management is often complicated, but the technical portion of any management program is only one part of the equation. The use of lethal (traps, snares, shooting, toxicants) and non-lethal (exclusion, guard animals, husbandry practices, harassment) coyote management strategies can be successful, less than successful, or not successful depending on the appropriate match of technical skill and technology available in a particular situation. However, technical sophistication is only a portion of the management dilemma. Issues of policy, law, politics, and economics, as well as human values, attitudes, and ethics play an obvious and profound role …
A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen Fagerstone
A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen Fagerstone
United States Department of Agriculture Wildlife Services: Staff Publications
A change in wildlife management appears to be occurring. Previous efforts needed to be focused on producing more game species or endangered animals; now, however, tools and training must resolve issues of overabundance and conflict with predators, especially species such as coyotes (Canis latrans) in urban areas. Urban conflicts with coyotes may be growing because of urban development of land and human intrusion, but alteration of habitats that attract coyotes is also a likely factor. Research that will describe basic coyote biology in urban areas will be needed, but managers will also need applied research and development of …
Monitoring Program And Assessment Of Coyote Predation For Olympic Marmots, Julia Judyta Witczuk
Monitoring Program And Assessment Of Coyote Predation For Olympic Marmots, Julia Judyta Witczuk
Graduate Student Theses, Dissertations, & Professional Papers
Witczuk, Julia J. M.S., Summer2007 Wildlife Biology MONITORING PROGRAM AND ASSESSMENT OF COYOTE PREDATION FOR OLYMPIC MARMOTS Chairperson: L. Scott Mills The Olympic marmot (Marmota olympus) is an endemic species to the Olympic Peninsula, Washington State. Although nearly all of its range is enclosed within Olympic National Park, declines and local extirpations of the species have been documented. The most plausible driver of the decline appears to be an increase in predator pressure. My thesis had two main objectives. First, I investigated the role of non-native coyotes (Canis latrans) in causing marmot mortality. Through park-wide carnivore scat analysis I determined …