Survival, Nesting Ecology, Mobility and Habitat Use of Northern Bobwhites During Spring and Summer - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Survival, Nesting Ecology, Mobility and Habitat Use of Northern Bobwhites During Spring and Summer write by Phillip Darren Pace. This book was released on 1998. Survival, Nesting Ecology, Mobility and Habitat Use of Northern Bobwhites During Spring and Summer available in PDF, EPUB and Kindle.
Nesting and Brood Ecology of Northern Bobwhite in Northern Bobwhnite Conservation Areas of Central Arkansas
Nesting and Brood Ecology of Northern Bobwhite in Northern Bobwhnite Conservation Areas of Central Arkansas - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nesting and Brood Ecology of Northern Bobwhite in Northern Bobwhnite Conservation Areas of Central Arkansas write by Jacob A. Cowan. This book was released on 2010. Nesting and Brood Ecology of Northern Bobwhite in Northern Bobwhnite Conservation Areas of Central Arkansas available in PDF, EPUB and Kindle. I radio collared and monitored 90 bobwhites on 15 privately-owned fields in Searcy County in 2008 and 2009. Twenty nests were located and nest success was compared between nests located in hayfields and non-hayfields. Vegetation was compared between nest sites and reference locations to characterize nesting habitat. Vegetation and invertebrate abundance were compared between sites in which broods foraged and reference sites in order to characterize brood-rearing habitat. Finally, I compared thermal characteristics between sites in which bobwhites foraged and reference sites. I intended to assess the ability of bobwhite restoration lands to supply nesting and brood-rearing habitat. I developed models which described nesting and brood-rearing habitat and used this model to classify vegetation samples from restoration areas as either one of the two habitat types or as unsuitable for either activity. A discriminant function used to discriminate between nest sites, foraging sites and unusable habitat correctly classified 68% of foraging sites, 75% of nest sites, 50% of transit sites, and 12% of reference sites. Sixty-five percent of restoration area samples were classified as foraging sites, 10% as nest sites and 25% as unusable. Although the discriminant function identified foraging and nesting habitat on restoration areas, bobwhite seldom used any of the restoration areas during the breeding season. Thus, restoration efforts appear to be ineffective in providing suitable habitat for breeding bobwhites. Low invertebrate biomass and abundance on restoration areas may play a role in lack of use by bobwhite. In restoration areas, habitat similar to nesting habitat was produced 2-4 years after burning of disking. Breeding habitat for bobwhites should contain both nesting and foraging habitat. Thus, management practices should provide both nesting and foraging habitat, with a majority of foraging habitat. As many of the fields that were heavily used by bobwhite were lightly to moderately grazed, I conclude that grazing at that level may be an appropriate management tool for bobwhite.
Spring Dispersal and Breeding Ecology of Northern Bobwhite in Southwest Ohio
Spring Dispersal and Breeding Ecology of Northern Bobwhite in Southwest Ohio - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Spring Dispersal and Breeding Ecology of Northern Bobwhite in Southwest Ohio write by Marjorie R. Liberati. This book was released on 2013. Spring Dispersal and Breeding Ecology of Northern Bobwhite in Southwest Ohio available in PDF, EPUB and Kindle. Continuing support for programs like the Conservation Reserve Program (CRP) that establish permanent, managed grasslands remain important for bobwhite conservation in the Midwest. Vegetation succession coupled with anticipated declines in CRP enrollment would likely diminish usable space for bobwhites in the Midwest during the breeding season and negatively impact nest success. Bobwhites in the agricultural Midwest would benefit from having woody cover in proximity to grassland habitats during the breeding season but woody encroachment within grassland habitats where bobwhites nest should be managed.
Nest Success and Brood Habitat Selection of the Northern Bobwhite in Southeast Iowa
Nest Success and Brood Habitat Selection of the Northern Bobwhite in Southeast Iowa - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Nest Success and Brood Habitat Selection of the Northern Bobwhite in Southeast Iowa write by Lisa M. Potter. This book was released on 2006. Nest Success and Brood Habitat Selection of the Northern Bobwhite in Southeast Iowa available in PDF, EPUB and Kindle. The northern bobwhite (Colinus virginianus) is one of the most popular upland games species in North America, and in turn has been a focus of game management and research from as early as the 1920s. However, bobwhite populations continue to decline throughout their geographic range. The cumulative effects of advanced succession and monoculture farming are often cited as a primary cause of range wide declines. As productivity may be one of the most important factors associated with changes in population size, identifying and managing quality nesting and brood habitats is vital to reversing the steady downward trend in bobwhite populations. In 2003 and 2004, we compared nest success and brood habitat selection of radiotagged bobwhite between a managed and unmanaged (private) landscape in southeastern Iowa. Using program MARK, we estimated daily nest survival with the best approximating model that included an area and year effect only. The daily survival rate in 2003 was higher within the managed area (managed: 1.00, SE = 0.00; private: 0.953, SE = 0.023), whereas 2004 daily survival rates were similar between sites (managed: 0.969, SE = 0.011; private: 0.964, SE = 0.011). Microhabitat characteristics, landscape composition and configuration within 210 m of a nest, and applied management techniques did not have a measurable effect on nest success. At both the home range and patch scale, broods on the managed and private study areas used habitat types differently. At the home range scale, broods on the private area simply selected for all habitat types not in row crop production, while broods on the managed area selected for habitats with early successional habitat characteristics and showed an avoidance of timber patches. At the patch scale, broods 2-weeks of age on the managed area selected for early successional habitats. At 4 weeks of age, broods showed only an avoidance of timber patches. There was no statistical evidence for brood habitat selection at the patch scale on the private study area. The percent of forb canopy cover within a habitat patch was a significant predictor of brood use, as were fields burned the previous year.
Rangeland Systems
Rangeland Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Rangeland Systems write by David D. Briske. This book was released on 2017-04-12. Rangeland Systems available in PDF, EPUB and Kindle. This book is open access under a CC BY-NC 2.5 license. This book provides an unprecedented synthesis of the current status of scientific and management knowledge regarding global rangelands and the major challenges that confront them. It has been organized around three major themes. The first summarizes the conceptual advances that have occurred in the rangeland profession. The second addresses the implications of these conceptual advances to management and policy. The third assesses several major challenges confronting global rangelands in the 21st century. This book will compliment applied range management textbooks by describing the conceptual foundation on which the rangeland profession is based. It has been written to be accessible to a broad audience, including ecosystem managers, educators, students and policy makers. The content is founded on the collective experience, knowledge and commitment of 80 authors who have worked in rangelands throughout the world. Their collective contributions indicate that a more comprehensive framework is necessary to address the complex challenges confronting global rangelands. Rangelands represent adaptive social-ecological systems, in which societal values, organizations and capacities are of equal importance to, and interact with, those of ecological processes. A more comprehensive framework for rangeland systems may enable management agencies, and educational, research and policy making organizations to more effectively assess complex problems and develop appropriate solutions.
