No description available.

This thesis describes the sixty years of transatlantic interaction, connection, dislocation and reconstruction in Anglo-Carolinian trade between 1730 and 1790. Focussing on about two dozen of London’s ‘Carolina traders’, it integrates their personal and collective stories of profit and loss, reputation and notoriety, and political activity and inactivity, with the broader forces they shaped and were in turn shaped by – forces of economic growth, political stability and instability, and imperial harmony and disharmony. Through their conjoined political and commercial agency – a dual role better appreciated by contemporaries than by historians – they profoundly influenced commerce between Britain and South Carolina. Their intermediation served firstly as a stabilising force in the Anglo-Carolinian polity as they procured favourable treatment for the colony’s goods and represented its grievances in the imperial metropolis. An important influence on this was their ‘absentee’ ownership of property in South Carolina and the thesis explores in depth the underappreciated prevalence and significance of this transatlantic absenteeism. From the mid-1760s, however, the traders’ political and commercial agency aggravated intra-imperial discord. Disputes between British merchants and their Carolinian correspondents reflected in microcosm the geo-political shifts of the time and reveal at an inter-personal level how resistance to British imperial authority developed among Carolinians. Furthermore, these disputes played a constitutive role in this resistance, as the purported commercial iniquities and political orientations of British merchants led their correspondents to question and reject the commercial and political norms that had once sustained Anglo-Carolinian relations. The thesis thus helps explain how South Carolina moved, often imperceptibly, against British authority during the 1760s and early 1770s by emphasising commercial discord within the growing political-economic friction. It further contributes to the burgeoning historiography of the eighteenth-century ‘Atlantic world’ by exploring the reconstruction of trading links between Britain and South Carolina after American independence. It reveals how strongly these were influenced by pre-war politics. In so doing, it demonstrates that Carolinians exercised greater commercial discretion after the war than contemporaries and historians have appreciated, and thus challenges contentions of South Carolina’s continuing commercial subservience to British trading interests.

In this dissertation, I provide three studies of artistic practice in the era of the Great Depression. In each chapter, I write about a different set of artists working in the southeastern United States: I write about Walker Evans and the artistic and literary community located in the French Quarter of New Orleans, Louisiana (1926-1941); Edwin and Elise Harleston and their portrait studio in Charleston, South Carolina (1922-1931); and Bill Traylor and the artists who founded the New South Gallery and Art School in Montgomery, Alabama (1939-1940). Drawing from public and private archival collections, I consider how these artists made works that represented the South while they also made connections with artists and visual communities elsewhere; these connections placed them in dialogue with artists of the Harlem Renaissance, of American Regionalism, and of the Mexican Mural Movement. Although the artists in each chapter were from different Southern cities, they shared similar interests in the importance of developing and participating in artistic community. I situate each study in this dissertation in relation to a type of artistic practice. These types of artistic practice—documentary, portraiture, and exhibition—served as loci for Southern artists’ ideas about time and place. Southern studies have been haunted by the idea that the South always looks backward, to the past. In these three studies, I consider how Southern artists and their contemporaries in other places took different approaches to referencing the past and imagining a future for the South. The works made by these Southern artists—which are linked by their complicated relationships to race, history, and place—are largely absent from histories of American and 20th century art. Their absence tells us much about the stakes behind history writing. By bringing these studies into dialogue with other, existing, art historical contexts and communities, I trace how historical absence is constructed and why such absences are important to consider. The works in this dissertation are also linked by their difference from a kind of Modernism; in their multiple and discrepant modernisms, the artists in this dissertation made work which was both modern and not-modern, which looked backward while pushing forward. / text

Thesis (Ph. D.)--West Virginia University, 2002. / Thesis originally issued in electronic format. Vita. Includes abstract. Includes bibliographical references (p. 220-228).

No description available.

Marine non-native species threaten economic and environmental health, making it crucial to understand factors that make them successful. Research on these species, therefore, allows for greater preparedness and informed management of biological invasions and increases understanding of elements structuring biological communities. Among the marine non-native species, and particularly the fouling community, non-native ascidians are a taxon of particular concern because they can crowd out native benthic species and smother mariculture products. This thesis addresses management for ascidians and other fouling organisms and includes research on the invasiveness of this taxon in addition to the invasibility of recipient fouling communities. On the West Coast of the U.S., limited efforts have been made to coordinate biofouling management across states, despite the myriad vectors increasing propagule pressure over time along coastal states. Building on recent state and local efforts, I developed a Pacific Regional Biofouling Plan for the states of Oregon and Washington to help start a consensus-driven process by which these states could create a forum for more comprehensive coordination efforts, following California's lead. As states address authority gaps, the biofouling management framework I've written is meant to be used to guide the conversation between managers as various stages of coastal management are realized. To better inform the scope and efficacy of management and regulatory efforts, the study of invasions ecology asks and aims to answer questions regarding recipient community interactions and characteristics of the non-native species themselves. Studies that identify characteristics that make ascidians successful (invasiveness) and determine the influence native communities have on their success (invasibility) are important for assessing overall risk of establishment and spread from non-native ascidians. Therefore, I aimed to: 1) explore the hypothesis that fouling communities on suspended, artificial structures are more invasible than benthic habitats; and 2) identify characteristics influencing predation patterns on the native Distaplia occidentalis versus non-native ascidian species using mensurative and experimental studies in Charleston Marina, Oregon. I conducted a series of feeding assays, surveys, and a caloric content analysis. Feeding assays were conducted with a suite of predators. The flatworm predator (Eurylepta leoparda) was found to be highly selective on the native ascidian Distaplia occidentalis, and only preyed on whole colony samples. Feeding assay data suggest that test (tunic) structure or thickness may be an influential factor affecting nudibranch (Hermissenda crassicornis) predation rates on native versus non-native ascidians, with greater predation on the native ascidian species. Non-native ascidians may escape predation in floating but not benthic environments on the Oregon coast due to their palatability characteristics, likely tunic structure and low caloric content. In this case, this suite of predators may indirectly facilitate the invasion of docks but provide at least partial resistance to the invasion of natural benthic areas. The chapters herein address gaps in management and scientific knowledge regarding non-native species of the marine fouling community. Future work enhanced by my efforts could include the development of the coastal biofouling management plan, coordinated by the Western Regional Panel on Aquatic Invasive Species Coastal Committee, and broadening the geographic and taxonomic scope of my research with a more comprehensive study of predator-prey interactions involving non-native ascidians and a diverse suite of predators. These interactions may be an important factor in explaining the success of ascidians and other fouling organisms on floating structures and lack of success on nearby benthic substrata.

No description available.

No description available.

Indiana University-Purdue University Indianapolis (IUPUI) / Long term no-till (NT) farming can improve the CH4 oxidation capacity of agricultural lands through creation of a favorable soil environment for methanotrophs and diffusive gas transport. However, limited data is available to evaluate the merit of that contention. Although the potential for biological CH4 oxidation may exist in NT soils, restricted diffusion could limit expression of that potential in fine-textured soils. A study was conducted to assess the CH4 oxidation potential and gaseous diffusivity of soils under plow till (PT) and NT for > 50 years. Intact cores and composite soils samples (0-10 and 10-20 cm) were collected from NT and PT plots located at a well-drained site (Wooster silt loam) and at a poorly-drained (Crosby silt loam) site in Ohio. Adjacent deciduous forest soils were also sampled to determine maximum rate expected in undisturbed soils in the region. Regardless of study sites and soil depth, CH4 oxidation rate (measured at near ambient CH4) and oxidation potential (Vmax, measured at elevated CH4) were 3-4 and 1.5 times higher in NT than in PT soils, respectively. Activity in the NT soils approached (66-80 %) that in the forest soils. Half saturation constants (Km) and threshold for CH4 oxidation (Th) were lower in NT (Km: 100.5 µL CH4 L-1; Th: 0.5 µL CH4 L-1) than in PT soils (Km: 134 µL CH4 L-1; Th: 2.8 µL CH4 L-1) suggesting a greater affinity of long-term NT soils for CH4, and a possible shift in methanotrophic community composition. CH4 oxidation rates were lower in intact soil cores compared to sieved soils, suggesting that CH4 oxidation was limited by diffusion, a factor that could lead to lower field-measured CH4 uptake than suggested by biological oxidation capacity measured in the laboratory. Regardless of soil drainage characteristic, long-term NT resulted in significantly higher (2-3 times) CH4 diffusivity (mean: 2.5 x 10-3 cm2 s-1) than PT (1.5 x 10-3 cm2 s-1), probably due to improved soil aggregation and greater macro-pores volume in NT soils. Overall, these results confirm the positive impact of NT on the restoration of the biological (Vmax, Km and Th) and physical (diffusivity) soil attributes essential for CH4 uptake in croplands. Long-term implementation of NT farming can therefore contribute to the mitigation of CH4 emission from agriculture.