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 88 for “"Steppe"”.
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From Steppe to Stable: Horses and Horsemanship in the Ancient World
This dissertation is a re-evaluation of the horse in the ancient world. The approach is not based on humans and human controls, rather it seeks to examine the equines of antiquity from the viewpoint of the horses themselves. This is accomplished by looking at equine conformation and how form …
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Interactions between Bromus tectorum, grasshoppers, and native plants in sagebrush steppe communities
Invasion by the exotic grass Bromus tectorum L. (cheatgrass) has produced widespread, persistent changes in the Intermountain West. As a result of this and other disturbances, sagebrush shrubland is among North America's most imperiled ecosystems. Restoration of B. tectorum-infested areas has often …
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The adjustment of the peoples of Asia to the desert and steppe environment
Thesis (M.A.)--Boston University, 1946. This item was digitized by the Internet Archive.
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Microbial responses to plant functional types and historical resources additions in the shortgrass steppe
… This is particularly important in the shortgrass steppe (SGS), where plants with the C3 or C4 photosynthetic pathway differ in phenology, which affects the timing of maximum N uptake and root exudate production.
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Being Ethnic on the Eurasian Steppe: Civic Nation-Building Discourse in Kazakhstan and Russia
<p>Civic nation-building as a concept has emerged within the political discourses of various post-Soviet states, particularly in relation to the status of ethnic minorities in Russia and Kazakhstan. This dissertation investigates the institutional efforts to establish civic nations in these states …
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Two Post-Glacial Sagebrush Steppe Fire Records at the Wildland-Urban Interface, Eastern Cascades, Washington
… regimes in an understudied ecosystem, sagebrush steppe. In this thesis, two ca. 15,000-year-old fire histories were developed from study sites in Okanogan County, Washington. Lake sediment cores were analyzed using macroscopic charcoal analysis and CharAnalysis software. Relationships between …
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Prairie dogs, plants, and pollinators: tri-trophic interactions affect plant-insect floral visitor webs in shortgrass steppe
… colony and off-colony sites on the Shortgrass Steppe Long-term Ecological Research site. On colonies, there was greater cover of forbs and bare ground, more inflorescences/m2 in all three years, more open flowers/m2 in 2004 and 2005, and greater floral biomass presented by the most frequently …
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Interactive effects of chronic nitrogen addition and pulsed deluge events on community structure and function of the shortgrass steppe
… in two grassland ecosystems: a shortgrass steppe in northeastern Colorado and a tallgrass prairie in northeastern Kansas. The first chapter of this dissertation established how the two grassland ecosystems responded to five years of nitrogen press along a gradient of addition levels. Within …
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Responses of Above- and Belowground Forb and Plant Species Diversity to Grazing Exclusion and Fire in the Northern Great Basin Sagebrush Steppe
The legacy effects of improper grazing regimes in the pre-1936 Taylor Grazing Act era and historical fire suppression have contributed to an overall decrease in native deep-rooted perennial bunch grasses and forbs, an increase in annual invasive grasses, and greater sagebrush dominance. Although …
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Botanical Resource Use in the Bronze and Iron Age of the Central Eurasian Mountain/Steppe Interface: Decision Making in Multiresource Pastoral Economies
… microenvironmental zones along the mountain and steppe boundaries; furthermore, they show a great deal of material cultural similarity and are placed into the same culture groups by researchers. The introduction of macrobotanical studies to Central Asian archaeology allows for a critique of …
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Mobile Practices and the Production and Curation of Pottery: A View from the Ancient Southern Russian Steppe Using Portable Methods of Investigation
<p>The southern Russian steppe is located in an intermediary position between the Caucasus, Lower Don and Lower Volga steppe, between which peoples, goods, and technologies often moved throughout prehistory, likely facilitated by small scale seasonal movements and occasional migrations by mobile …
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Unraveling the population history of the Xiongnu to explain molecular and archaeological models of prehistoric Mongolia
… when nomadic tribes created the world's first steppe empire in Inner Asia. These aggregated tribes, known to Chinese historians as Xiongnu, ruled from the 3rd century BCE to the 2nd century CE. They came to define steppe polity construction later used by the Mongol Empire under the reign of …
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