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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 49 for “"range management"”.
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Grazing and Range Management - Alberta
Livestock grazing and range management have had major impacts on grassland vegetation in Alberta. Grazing animals have had impacts on plant communities in Alberta since before fur traders occupied the land. Over the years both livestock and wildlife have been studied and managed to try and ensure …
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Knowledge-development in applied science: the case of range management
… of the applied ecological discipline of range management in terms of the goals, methods, concepts, and criteria developed by range management for their science between 1897 and 1920. It argues, in contrast to the traditional view uÌ uat describes the knowledge-development process in …
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An analysis of land ownership and range management practices in the northern Kansas Flint Hills
Call number: LD2668 .T4 1986 W542
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Prairie dogs, plants, and pollinators: tri-trophic interactions affect plant-insect floral visitor webs in shortgrass steppe
I investigated how black-tailed prairie dogs (Cynomys ludovicianus) altered pollinator habitat, specifically in terms of bare ground cover and floral resources, on northeastern Colorado's Pawnee National Grassland, in 2003 through 2005. I also measured changes in habitat utilization by insect …
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Effects of nitrogen fertilizer and red clover (Trifolium pratense L.) component on productivity of grass-legume mixed swards
The effects of two levels of red clover (low and high) and three levels of N fertilizer (0, 28, 56 N kg ha-1) on herbage accumulation and quality of grass-legume mixed swards were studied. Total herbage accumulation of the mixtures with high legume percentage was significantly higher than those …
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Effects of nitrogen and cutting management on root growth and productivity of a Kentucky bluegrass (Poa pratensis L.) and white clover (Trifolium repens L.) pasture
Nitrogen (N) and defoliation effects on productivity, root growth and soil nitrate (NO3-) in a Kentucky bluegrass and white clover pasture were examined. Nitrogen was applied annually in two equally split applications at rates of 0, 80 or 160 kg N ha -1. After reaching 12.7 cm, plants were cut to …
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Effects of three clipping managements on growth and production of a Kentucky bluegrass-clover sward
The effect of three clipping managements on the growth and production of Kentucky bluegrass was investigated at the West Virginia University Livestock Farm. Herbage accumulation, botanical composition, leaf extension rate (LER), leaf appearance rate (LAR), and tiller density were observed. The …
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The Interaction of Arvicoline Rodents and Sheep in Norwegian Alpine Rangeland
The change in use of Norwegian alpine rangelands from mixed species herds to herds dominated by sheep and reindeer has raised concerns for the potential effect on vegetation and native animal communities. Intensive grazing by large mammals can have significant impacts on plant community …
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Biological control affects native vegetation and recovery potential in Theodore Roosevelt National Park, North Dakota
… leafy spurge seed densities in infested sites ranged between 447 to 931 seed/m2 in and 164 to 724 seed/m2 in bio-control sites across vegetation associations. Leafy spurge seed densities in infested sites were not significantly different than those observed in bio-control sites. Non-native …
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THE POLICY OF EXPERIMENTAL STEWARDSHIP ON PUBLIC RANGELANDS.
… areas and (3) the annual economic value of rangeland recreation exceeds all other rangeland outputs on all three areas studied.
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Retranslocation and volatilization of shoot nitrogen during drought in perennial prairie grasses
… nutrient cycling, and crop, forest, and range management practices. The overall objectives of my dissertation research were (1) to determine the extent to which drought-induced retranslocation of shoot N to roots or rhizomes occurs in six perennial C$\sb4$ grasses of tallgrass prairie …
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Comparison of buffered grazing systems for beef cattle
To evaluate the productivity of a rotational versus continuous grazing system for beef production within a buffer grazing system, thirty crossbred beef cows and their calves were randomly assigned to one of two grazing systems replicated twice over three years of the experiment. Each replication of …
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Major problems associated with the West Virginia forest sector as perceived by West Virginia Division of Forestry Service foresters
… in landowner education concerning forest management and timber harvesting.
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Managing the wildlife resources of Senegal's forests and wildands
… of Senegal and to describe a wildlife resource management system. The system is hypothesized to be a basis for organization, operations, and planning for the long-range management of the wildlife resources in the forests and shrublands of Senegal. The project described the country area. It …
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Maasai oxen, agriculture and land use change in Monduli District, Tanzania
<p>This dissertation examines the sustainability of the use of oxen by the Maasai and Arusha (WaArusha) people, in Monduli District, Tanzania. Traditionally pastoralists, the Maasai are undergoing a social and agricultural transformation process of sedentarization in this region. The villages …
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Computer aids for reclaiming eastern surface mines as rangelands
An eastern range management concept was developed and demonstrated for coal surface mined lands. An objective weighting methodology was employed to determine the optimum forage species mixture to seed surface mined sites. With the optimum mixture determined, total costs for establishment, total …
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