Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 57 for “"ungulate"”.
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Riparian willow decline in Colorado: interactions of ungulate browsing, native birds and fungi
… riparian ecosystems. They provide food for ungulates and beavers; habitat for resident and migratory bird populations, and amphibians; and are integral components of the structure and function of montane riparian ecosystems. In Rocky Mountain National Park (RMNP), willows form the dominant …
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Overcompensation of Ipomopsis aggregata following ungulate herbivory: getting to the root of it
… scarlet gilia, Ipomopsis aggregata, showed that ungulate herbivory by mule deer and elk can result in a three-fold increase in plant fitness. We hypothesized that fungal associations would facilitate the compensatory response most commonly observed in an Arizona population of scarlet gilia; …
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Interactions between habitat and ungulate herbivory limit the spread of Ipomopsis aggregata (polemoniaceae)
… interactive effects of habitat quality and ungulate herbivory on the fitness of a monocarpic wildflower, scarlet gilia (Ipomopsis aggregata) to further elucidate reasons for its absence in nutrient rich montane meadows in Flagstaff, AZ. Scarlet gilia is commonly found on slopes with …
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Quantifying Ungulate-Rangeland Interactions: From Monitoring Free-Roaming Horse Condition to Vegetation Response Following Herbivore Exclusion
… vegetation and soil responses to exclusion of ungulates and jackrabbits. Bayesian mixed-effects models reveal that ungulate exclusion increased winterfat, cyanobacteria, lichen, moss, and annual cover while decreasing soil compaction. Rabbit exclusion further increased winterfat and annual forb …
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Improving ungulate habitat in a region undergoing rapid energy development: consequences for songbirds and small mammals
Habitat manipulation intended to mitigate the impact of energy development on game animals is well underway in the western U.S. Yet, the consequences of these actions for other species are not well understood. A habitat manipulation experiment was established in the Piceance Basin, a region of …
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Effects of predator urine on deterring ungulate browsing of aspen on the Turnbull National Wildlife Refuge
<p>"In the Pacific Northwest, quaking aspen (Populus tremuloides) support large amounts of biodiversity and are considered second only to riparian zones. Due to aspen's ecological importance and recent decline on Turnbull National Wildlife Refuge (TNWR), increasing aspen regeneration is of high …
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Use and Survival of Greater Sage-Grouse in Meadows Managed for Non-Native Ungulate Grazing in Nevada
… on sage-grouse population dynamics. Non- native ungulates also rely heavily on these mesic ecosystems during the summer. With high densities of non-native ungulates grazing these relatively small areas during a large time span, severe degradation to these habitats may occur. This type of …
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Managing open habitats for species conservation : the role of wild ungulate grazing, small-scale disturbances, and scale
… open habitats. We studied the effect of wild ungulates in a 160 ha game preserve in NE Germany in three successional stages (i) Corynephorus canescens-dominated grassland, (ii) ruderal tall forb vegetation dominated by Tanacetum vulgare and (iii) Pinus sylvestris-pioneer forest over three …
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Current status and impact (2004-2015) of indigenous ungulate herbivory on the vegetation of Sanbona Wildlife Reserve in the Little Karoo
… Africa and the introduction of large indigenous ungulates into confined enclosed areas could alter plant communities and ecosystem processes. This is of particular concern in semi-arid rangelands of the Succulent Karoo where the evolutionary history of grazing is not clear and the compatibility …
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The effects of herbivory, competition, and disturbance on island meadows
… in invasion ecology have been overlooked. Ungulate densities are increasing due to the eradication of predators and landscape change and I asked how herbivory and invasion might interact to cause declines of native species. In Garry oak meadows, Canada’s most endangered ecosystem, native …
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Analysis of dental pathologies in the Pliocene herbivores of Langebaanweg and their palaeoenvironmental implications
… the extent of dental pathologies in several ungulate species from the Pelletal Phosphate Member (PPM) at Langebaanweg, and uses this analysis, along with stable isotope analyses, to obtain fresh insight into the local palaeoenvironment during the Early Pliocene.
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Ecology of Mountain Lions (Puma concolor) in the North Dakota Badlands: Population Dynamics and Prey Use
… prevalent item (76.9%) in mountain lion diets. Ungulate kill rates were 1.09 ungulates/week ± 0.13 [SE] in summer and 0.90 ungulates/week ± 0.11 in winter. Estimates of total biomass consumed were 5.8 kg/day ± 0.56 [SE] in summer and 7.2 kg/day ± 1.01 in winter. Scavenge rates were 3.7% in …
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MONITORING SURVIVAL OF YOUNG IN UNGULATES: A CASE STUDY WITH ROCKY MOUNTAIN ELK
… Wildlife Biology MONITORING SURVIVAL OF YOUNG IN UNGULATES: A CASE STUDY WITH ROCKY MOUNTAIN ELK Chairperson: Daniel H. Pletscher Survival of young is an important determinant of population growth and persistence in ungulate populations. Therefore, monitoring the survival of young is an essential …
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MONITORING SURVIVAL OF YOUNG IN UNGULATES: A CASE STUDY WITH ROCKY MOUNTAIN ELK
… Wildlife Biology MONITORING SURVIVAL OF YOUNG IN UNGULATES: A CASE STUDY WITH ROCKY MOUNTAIN ELK Chairperson: Daniel H. Pletscher Survival of young is an important determinant of population growth and persistence in ungulate populations. Therefore, monitoring the survival of young is an essential …
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Is the grass really greener on the other side?
… influence the feeding behaviour and diet of the ungulate populations both of which would alter the vegetation quantity. The study was conducted in the Kruger National Park. One site was supplied with additional nutrients and compared to three control sites. The nitrogen and phosphorus content of …
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Trade-off analysis of accuracy and spatial resolution in strategic forest planning models
… inputs (area of natural disturbance type and ungulate winter range) and outputs (harvest volume, growing stock and seral stage distribution). In general, deviations in all criteria increased with the block size. Spatial resolution was also evaluated by the database size and simulation runtime. …
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Can a habitat selection model predict the distribution of moose Alces alces over multiple years?
… the winter distribution of a heavily managed ungulate species is predictable using models based on habitat factors. Focussing on three management sites in Norway of approximately 40km2 each, a measure of time spent by moose in a patch (100m2) was generated using the number of moose pellets in …
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Ecotourism and its ecological impact: A study of tourist developments in the Mara
… assessed their anthropogenic impacts upon key ungulate species in the ecosystem over a three year period. The findings of this aspect of the research indicate that the effects of the tourism industry on wildlife are highly species specific. In particular Buffalo were most affected by …
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