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Articles 1 - 11 of 11
Full-Text Articles in Physical Sciences and Mathematics
Intrafield Patterns Of Wildlife Damage To Corn And Soybeans In Northern Indiana, Travis L. Devault, James C. Beasley, Lee A. Humberg, Brian J. Macgowan, Monica I. Retamosa, Olin E. Rhodes Jr.
Intrafield Patterns Of Wildlife Damage To Corn And Soybeans In Northern Indiana, Travis L. Devault, James C. Beasley, Lee A. Humberg, Brian J. Macgowan, Monica I. Retamosa, Olin E. Rhodes Jr.
USDA Wildlife Services: Staff Publications
Management programs aimed at reducing wildlife damage to row crops rely on information concerning the spatial nature of wildlife damage at local and landscape scales. In this study we explored spatial patterns of wildlife damage within individual corn and soybean fields by describing relationships between specific locations where wildlife damage was recorded and distances from such locations to various habitat types that presumably influenced animal abundance and movements in our study area. Using stratified random sampling, we conducted depredation surveys of 100 corn fields and 60 soybean fields from May through October both in 2003 and 2004 and recorded the …
A Fence Design For Excluding Elk Without Impeding Other Wildlife, Kurt C. Vercauteren, Nathan W. Seward, Michael J. Lavelle, Justin W. Fischer, Gregory W. Phillips
A Fence Design For Excluding Elk Without Impeding Other Wildlife, Kurt C. Vercauteren, Nathan W. Seward, Michael J. Lavelle, Justin W. Fischer, Gregory W. Phillips
USDA Wildlife Services: Staff Publications
Concentrated herbivory by elk (Cervus elaphus) can degrade vegetative communities and alter ecosystem processes. Areas severely damaged by elk are commonly protected with woven wire fence, which can exclude other animals. Complete exclusion and prevention of large mammal herbivory might not always be necessary to restore vegetative communities. We designed and evaluated a simple fence that excluded elk, but maintained access for deer and other species. We enclosed a 1-ha stand of quaking aspen (Populus tremuloides Michaux) with our fence in an area with a high density of elk. We monitored effectiveness of the fence with trackplots, …
Caffeine Formulation For Avian Repellency, Scott J. Werner, John L. Cummings, Shelagh K. Tupper, Jerome C. Hurley, Randal S. Stahl, Thomas M. Primus
Caffeine Formulation For Avian Repellency, Scott J. Werner, John L. Cummings, Shelagh K. Tupper, Jerome C. Hurley, Randal S. Stahl, Thomas M. Primus
USDA Wildlife Services: Staff Publications
Nonlethal management alternatives are needed to reduce avian depredation of agricultural crops. Caffeine has promise as an effective, economical, and environmentally safe avian repellent, yet formulation improvements are needed for field applications. We included sodium benzoate in subsequent formulations to enhance the solubility of caffeine. Red-winged blackbirds (Agelaius phoeniceus) discriminated between untreated rice and rice treated with 250 ppm or 10,000 ppm caffeine and sodium benzoate in captivity. We observed a positive concentration–response relationship among birds offered rice treated with 250 ppm, 1,000 ppm, 2,500 ppm, 5,000 ppm, 10,000 ppm, or 20,000 ppm caffeine and sodium benzoate. Relative …
A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen A. Fagerstone
A Broad Perspective On Current And Future Research On Urban Coyotes, John A. Shivik, Kathleen A. Fagerstone
Wildlife Damage Management Conference Proceedings
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 …
Oral Rabies Vaccine (Orv) Bait Uptake By Captive Striped Skunks, Susan M. Jojola, Stacie J. Robinson, Kurt C. Vercauteren
Oral Rabies Vaccine (Orv) Bait Uptake By Captive Striped Skunks, Susan M. Jojola, Stacie J. Robinson, Kurt C. Vercauteren
USDA Wildlife Services: Staff Publications
Aerial delivery of oral rabies vaccine (ORV) baits has proven effective in large-scale efforts to immunize wildlife against rabies, and in North America this strategy currently is being used to immunize foxes (Urocyon cinereoargenteus and Vulpes vulpes), raccoons (Procyon lotor), and coyotes (Canis latrans). Skunks are also a major reservoir and vector of rabies, but at present oral vaccines for use in skunks are not licensed. Furthermore, given differences in morphology (smaller jaws) and behavior (food handling and consumption), it is unknown if baits currently used in ORV campaigns would be effective for skunks. …
Evolution Of The Field Of Wildlife Damage Management In The United States And Future Challenges, James E. Miller
Evolution Of The Field Of Wildlife Damage Management In The United States And Future Challenges, James E. Miller
Human–Wildlife Interactions
Through the early twentieth century, people in rural areas of North America either dealt with problems caused by wildlife by killing the problem species, eliminating its habitat, changing crops or husbandry practices, tolerating the damage, or moving to a new area devoid of such problem animals. However, many of these solutions are impractical today with the increase in human populations, the increased expansion of development into previously rural landscapes, the increased fragmentation of land ownership, and the increasing movement of people into metropolitan areas. Because of current local, state, and federal ordinances and regulations, along with the impacts of animal …
Intrafield Patterns Of Wildlife Damage To Corn And Soybeans In Northern Indiana, Travis L. Devault, James C. Beasley, Lee A. Humberg, Brian J. Macgowan, Mónica I. Retamosa, Ollin E. Rhodes Jr.
Intrafield Patterns Of Wildlife Damage To Corn And Soybeans In Northern Indiana, Travis L. Devault, James C. Beasley, Lee A. Humberg, Brian J. Macgowan, Mónica I. Retamosa, Ollin E. Rhodes Jr.
Human–Wildlife Interactions
Management programs aimed at reducing wildlife damage to row crops rely on information concerning the spatial nature of wildlife damage at local and landscape scales. In this study we explored spatial patterns of wildlife damage within individual corn and soybean fields by describing relationships between specific locations where wildlife damage was recorded and distances from such locations to various habitat types that presumably influenced animal abundance and movements in our study area. Using stratified random sampling, we conducted depredation surveys of 100 corn fi elds and 60 soybean fields from May through October both in 2003 and 2004 and recorded …
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
USDA 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 …
A Landscape-Level Survey Of Feral Hog Impacts To Natural Resources Of The Big Thicket National Preserve, Pedro M. Chavarria, Roel R. Lopez, Gillian Bowser, Nova J. Silvy
A Landscape-Level Survey Of Feral Hog Impacts To Natural Resources Of The Big Thicket National Preserve, Pedro M. Chavarria, Roel R. Lopez, Gillian Bowser, Nova J. Silvy
Human–Wildlife Interactions
We conducted a survey of the impact of feral hog (Sus scrofa) on the natural resources of the Big Thicket National Preserve (BTNP), a unit of the National Park Service. We worked in 3 management units: Lance Rosier, Big Sandy, and Turkey Creek. Random stratified sampling was conducted to assess impacts from hog damage on resources by vegetation type at a landscape scale. Landscape features such as topography, soil moisture, soil type, and dominant vegetative cover types were used to predict hog damage. The overall damage to vegetation from hog rooting or wallowing averaged 28% within the 3 …
Effi Cacy Of Cpth-Treated Egg Baits For Removing Ravens, Peter S. Coates, Jack O. Spencer, Jr., David J. Delehanty
Effi Cacy Of Cpth-Treated Egg Baits For Removing Ravens, Peter S. Coates, Jack O. Spencer, Jr., David J. Delehanty
Human–Wildlife Interactions
Human-altered landscapes have provided resource subsidies for common ravens (Corvus corax) resulting in a substantial increase in raven abundance and distribution throughout the United States and Canada in the past 25 years. Ravens are effective predators of eggs and young of ground-nesting birds. During 2002–2005, we tested whether chicken egg baits treated with CPTH (3-chloro-p-toluidine hydrochloride) could be used to manage raven numbers in an area where raven depredation was impacting sharp-tailed grouse (Tympanuchus phasianellus columbianus) and greater sage-grouse (Centrocercus urophasianus) populations in Nevada. We performed multiple raven surveys at a treatment site and …
Influence Of Habitat Patch Characteristics On The Success Of Upland Duck Nests, Jaiume M. Jiménez, Michael R. Conover, Raymond D. Deuser, Terry A. Messmer
Influence Of Habitat Patch Characteristics On The Success Of Upland Duck Nests, Jaiume M. Jiménez, Michael R. Conover, Raymond D. Deuser, Terry A. Messmer
Human–Wildlife Interactions
When there is a rich guild of nest predators that use different modalities and techniques to locate hidden nests, we hypothesized that no habitat patch characteristic will consistently predict nest success, because if such a characteristic existed then predators would develop a search image based on it and use that characteristic to increase their hunting efficiency for nests. We tested this prediction in the Prairie Pothole region of North Dakota by characterizing the features of 16 habitat patches that contained >1,800 dabbling duck nests. Nest success was monitored during both the early and late nesting season over 2 years. Nest …