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Full-Text Articles in Life Sciences
Human–Black Bear Interactions And Public Attitudinal Changes In An Urban Ordinance Zone, Mark A. Barrett, Sarah E. Barrett, David J. Telesco, Michael A. Orlando
Human–Black Bear Interactions And Public Attitudinal Changes In An Urban Ordinance Zone, Mark A. Barrett, Sarah E. Barrett, David J. Telesco, Michael A. Orlando
Human–Wildlife Interactions
Human–bear (Ursus spp.) interactions (HBI) commonly occur in residential areas throughout North America. Negative HBI can be alleviated by using bear-resistant garbage cans (BRC) and by securing other bear attractants (e.g., bird feeders). Since the early 2000s, human and Florida black bear (U. americanus floridanus) densities have increased substantially throughout Florida, USA, concurrently producing an increase in HBI. In central Florida, an area with high densities of humans and black bears, we surveyed 2 neighborhoods that occurred in an urban ordinance zone established in 2016 that required residents to secure anthropogenic food sources. Residents were supplied with …
Characteristics Of Non-Fatal Attacks By Black Bears: Conterminous United States, 2000–2017, Janel M. Scharhag, Cady Sartini, Shawn M. Crimmins, Scott E. Hygnstrom, Jeffrey B. Stetz
Characteristics Of Non-Fatal Attacks By Black Bears: Conterminous United States, 2000–2017, Janel M. Scharhag, Cady Sartini, Shawn M. Crimmins, Scott E. Hygnstrom, Jeffrey B. Stetz
Human–Wildlife Interactions
Attacks on humans by bears (Ursus spp.) have increased in recent decades, as both human and bear populations have increased. To help mitigate the risk of future attacks, it is important to understand the circumstances in past attacks. Information and analyses exist regarding fatal attacks by both American black bears (Ursus americanus) and brown bears (U. arctos) as well as non-fatal attacks by brown bears. No similarly thorough analyses on non-fatal attacks by black bears are available. Our study addressed this information gap by analyzing all (n = 210) agency-confirmed, non-fatal attacks by black …
Managing Human-Habituated Bears To Enhance Survival, Habitat Effectiveness, And Public Viewing, Kerry A. Gunther, Katharine R. Wilmot, Steven L. Cain, Travis C. Wyman, Eric G. Reinertson, Amanda M. Bramblett
Managing Human-Habituated Bears To Enhance Survival, Habitat Effectiveness, And Public Viewing, Kerry A. Gunther, Katharine R. Wilmot, Steven L. Cain, Travis C. Wyman, Eric G. Reinertson, Amanda M. Bramblett
Human–Wildlife Interactions
The negative impacts on bears (Ursus spp.) from human activities associated with roads and developments are well documented. These impacts include displacement of bears from high-quality foods and habitats, diminished habitat effectiveness, and reduced survival rates. Additionally, increased public visitations to national parks accompanied with benign encounters with bears along park roads have caused more bears to habituate to the presence of people. In some contexts, habituation can predispose bears to being exposed to and rewarded by anthropogenic foods, which can also lower survival rates. The managers and staff of Yellowstone National Park located in Wyoming, Montana, and Idaho, …
Using Global Positioning System Technology To Manage Human-Black Bear Incidents At Yosemite National Park, Rachel L. Mazur, Ryan M. Leahy, Caitlin J. Lee-Roney, Kathleen E. Patrick
Using Global Positioning System Technology To Manage Human-Black Bear Incidents At Yosemite National Park, Rachel L. Mazur, Ryan M. Leahy, Caitlin J. Lee-Roney, Kathleen E. Patrick
Human–Wildlife Interactions
Managing human–bear (Ursus spp.) incidents is a top management priority in national parks inhabited by bears. Yosemite National Park (Yosemite), located in the Sierra Nevada in California, USA, receives up to 5 million visitors annually. It is also home to 300–500 black bears (U. americanus). Yosemite has an extensive history of black bear research, educational programs, and innovative solutions for reducing human–bear incidents. Despite this, human–bear incidents peaked in 1998 at 1,584. The resulting political fallout led to Yosemite receiving funds to expand its bear management program, including increasing its staffing and garbage pick-up, and improving the …
A Call For Proactive Human–Bear Conflict Mitigation, Annabella R. Helman
A Call For Proactive Human–Bear Conflict Mitigation, Annabella R. Helman
Human–Wildlife Interactions
This commentary serves as a call to action for the creation of proactive mitigation efforts to lessen human–bear conflict based on comprehensive predictive data models.
Use Of Predator Hair To Enhance Perceived Risk To White-Tailed Deer In A Foraging Context, Thomas W. Seamans, Bradley F. Blackwell, Kimberly E. Linnell
Use Of Predator Hair To Enhance Perceived Risk To White-Tailed Deer In A Foraging Context, Thomas W. Seamans, Bradley F. Blackwell, Kimberly E. Linnell
Human–Wildlife Interactions
Deer react to predator scent in varying degrees even when exposed to unknown predators. This response could be genetically based and maintained as long as the population is exposed to predation. We tested whether predator scent in the form of hair would enhance perceived risk and serve as a foraging repellent to free-ranging white-tailed deer (Odocoileus virginianus). During the winters of 2013 and 2014, we quantified alert behaviors and consumption of whole-kernel corn in response to current (coyote [Canis latrans]) and extirpated (bobcat [Lynx rufus]; black bear [Ursus americanus]) predator species alone …
Commentary Distance-Dependent Effectiveness Of Diversionary Bear Bait Sites, Stephen Stringham, Ann Bryant
Commentary Distance-Dependent Effectiveness Of Diversionary Bear Bait Sites, Stephen Stringham, Ann Bryant
Human–Wildlife Interactions
We (Stringham and Bryant 2015) previously reported on Bryant’s experiment in diversionary baiting of black bears (Ursus americanus). This occurred during the historically severe drought of 2007, in the Lake Tahoe Basin at the border of California and Nevada, USA. Effectiveness of baiting was inversely related to each community’s distance from the bait site. That has provoked the question whether conflict rates during the period of baiting would have fallen anyway even without baiting. We show here that the general trend during both pre and post-baiting years (2005–2006 and 2008–2009) was for an increase in conflicts during the …
Short-Term Fate Of Rehabilitated Orphan Black Bears Released In New Hampshire, Wesley E. Smith, Peter J. Pekins, Andrew A. Timmins, Benjamin Kilham
Short-Term Fate Of Rehabilitated Orphan Black Bears Released In New Hampshire, Wesley E. Smith, Peter J. Pekins, Andrew A. Timmins, Benjamin Kilham
Human–Wildlife Interactions
We evaluated the release of rehabilitated, orphan black bears (Ursus americanus) in northern New Hampshire. Eleven bears (9 males, 2 females; 40–45 kg) were outfitted with GPS radio-collars and released during May and June of 2011 and 2012. Bears released in 2011 had higher apparent survival and were not observed or reported in any nuisance behavior, whereas no bears released in 2012 survived, and all were involved in minor nuisance behavior. Analysis of GPS locations indicated that bears in 2011 had access to and used abundant natural forages or habitat. Conversely, abundance of soft and hard mast was …
Distance-Dependent Effectiveness Of Diversionary Bear Bait Sites, Stephen F. Stringham, Ann Bryant
Distance-Dependent Effectiveness Of Diversionary Bear Bait Sites, Stephen F. Stringham, Ann Bryant
Human–Wildlife Interactions
Baiting black bears (Ursus americanus) to sites outside a community can alleviate famine-induced spikes in human–bear conflicts. But little is known about effects of distance between baits and communities. Bears were lured out of towns in California’s Tahoe Basin to baits in adjacent forests. Delay between onsets of baiting and decline in bear–human conflict was directly related to each community’s distance from the nearest bait. The amount and rate that conflicts declined were inversely related to distance. In 7 communities about 1 km from a bait, conflicts declined 41% after 1 month and 93% after 3 months; mean …
Does Diversionary Feeding Create Nuisance Bears And Jeopardize Public Safety?, Lynn L. Rogers
Does Diversionary Feeding Create Nuisance Bears And Jeopardize Public Safety?, Lynn L. Rogers
Human–Wildlife Interactions
Diversionary feeding of black bears (Ursus americanus) around campgrounds and residential areas has received little study because of concerns that it might create nuisance bears and jeopardize public safety. To evaluate those concerns and assess its effectiveness in mitigating human–bear conflict, we studied diversionary feeding, habituation, and food conditioning at a U.S. Forest Service campground and residential complex near Ely, Minnesota. During 1981 to 1983, 6 bears (2/year) had been removed from this area as nuisances; but during 8 years of diversionary feeding (1984 to 1991), the only removals were 2 bears that had newly immigrated to the …
Survival And Productivity Of A Low-Density Black Bear Population In Rocky Mountain National Park, Colorado, Roger A. Baldwin, Louis C. Bender
Survival And Productivity Of A Low-Density Black Bear Population In Rocky Mountain National Park, Colorado, Roger A. Baldwin, Louis C. Bender
Human–Wildlife Interactions
Historically, Rocky Mountain National Park (RMNP) has supported a small black bear (Ursus americanus) population of low productivity. Increased visitor use of the park and development around its periphery could lead to a reduction in population viability of RMNP’s bear population or could increase the potential for human–bear conflict. Therefore, we investigated contemporary survival and productivity parameters for RMNP’s black bear population from 2003 to 2006 and compared these values to historic levels (1984–1991) and population means throughout the western United States to clarify the current status of RMNP’s bear population. The contemporary black bear population showed signs …
How People Should Respond When Encountering A Large Carnivore: Opinions Of Wildlife Professionals, Dylan E. Brown, Michael R. Conover
How People Should Respond When Encountering A Large Carnivore: Opinions Of Wildlife Professionals, Dylan E. Brown, Michael R. Conover
Human–Wildlife Interactions
We conducted telephone surveys of wildlife professionals who work with large carnivores to ask their opinions about how people should respond to avoid being injured when confronted by a black bear (Ursus americana), grizzly bear (Ursus arctos), mountain lion (Puma concolor), or gray wolf (Canis lupus). The respondents agreed that the most appropriate response was to try to increase the distance between a person and the carnivore. In the event of an attack by a black bear, mountain lion, or wolf, most respondents said to fight back. Opinion was divided over the …
Effects Of Aversive Conditioning On Behavior Of Nuisance Louisiana Black Bears, Jennifer Leigh, Michael J. Chamberlain
Effects Of Aversive Conditioning On Behavior Of Nuisance Louisiana Black Bears, Jennifer Leigh, Michael J. Chamberlain
Human–Wildlife Interactions
Complaints associated with nuisance activity by Louisiana black bears (Ursus americanus luteolus) in south Louisiana have steadily increased since 2000, demanding intervention by state and federal agencies. As a federally threatened species, Louisiana black bears that are a nuisance require nonlethal management, referred to as aversive conditioning. We used rubber buckshot and dogs to test the effectiveness of management techniques used by the state of Louisiana to deter nuisance bear activity. We captured 11 bears in residential and industrial areas where nuisance bear activity was reported. We fitted bears with radiotransmitting collars and released them within 2 km …