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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Tree removal as a tool of ecological restoration in Burns Bog, Delta B.C.

Danyluk, Angela 07 May 2012 (has links)
Burns Bog (the Bog) is a 2800 ha protected peatland in Delta, British Columbia. Globally unique due to its form, size, chemistry, flora and fauna the Bog is distinct and managed as a wetland. In 2005, a large fire consumed 200 ha of peatland after which birch (Betula pendula) and pine (Pinus contorta) trees grew in great densities. Within the fire zone piezometers were installed to monitor water levels below the surface. A high water level promotes peat-forming processes and in 2009 water levels dropped significantly. In 2010, a 75m x 50m experimental plot within the fire zone was cleared of birch and pine trees to investigate the impacts of tree removal on bog hydrology and plant communities. Higher water levels and positive bog plant growth at the experimental site was observed in 2010 and 2011 when compared to the control site where trees remained intact.
2

Cultural and non-cultural variation in the artifact and fauna samples from the St. Mungo Cannery site, B.C., DgRr 2

Boehm, Sheila Gay Calvert 27 June 2016 (has links)
The records or both the faunal remains and artifacts recover d from the St.Mungo Cannery site in the Fraser Delta, British Columbia during 1968-1969 are analysed quantitatively for evidence of processual cultural change. Descriptions of the site and site habitat are given, and methods used to recover, describe, and analyse the two records are detailed. The patterns of variation through time are given in tables of the relative frequencies of types found in excavation units Cl and C2. Multidimensional scalogram analysis is used to delineate and visually present the separation of components. An attempt is made to distinguish cultural variation in the two records from non-cultural variation produced by sampling procedures, and to control for the latter. The relationship between sample size and the number of artifacts and faunal types found is statistically demonstrated as a major sampling error . Some comparisons are made between the patterns of variation observed in faunal and artifact types theoretically related as evidence of particular activities. The information contained in the faunal record is found to be additional as well as parallel to that contained in the artifact record. / Graduate
3

Conceiving local archival institutions: a study of the development of archival programs in Richmond and Delta, British Columbia

Chong, Bernice W. 11 1900 (has links)
This essay tries to determine how two municipal archival programs develop from their origins as collections of historical documents in museums, and whether they fit into the larger pattern of archival development found in Canadian federal and provincial public archives, which is identified as "total archives". To provide some context for the two case studies, the essay first examines the main features of the Canadian tradition of "total archives" and tries to locate Canadian archives in the context of the worldwide evolution of modern archival institutions. The essay then explores the development of municipal archival programs in Delta and Richmond, British Columbia to reveal how they were conceived, advanced and sustained. The study concludes that local archival programs do fit into the Canadian tradition of "total archives", however, a conceptual framework which includes both the cultural and administrative purposes of archival institutions appears to be lacking. The conclusion summarizes some of the aspects of a conceptual framework including: the nature of archives, the legal status of public records and the need for archival legislation, the administrative role of an archival program, the need for a commitment of adequate resources, and the need for local governments to recognize their duty to preserve and make accessible public records of continuing value.
4

Conceiving local archival institutions: a study of the development of archival programs in Richmond and Delta, British Columbia

Chong, Bernice W. 11 1900 (has links)
This essay tries to determine how two municipal archival programs develop from their origins as collections of historical documents in museums, and whether they fit into the larger pattern of archival development found in Canadian federal and provincial public archives, which is identified as "total archives". To provide some context for the two case studies, the essay first examines the main features of the Canadian tradition of "total archives" and tries to locate Canadian archives in the context of the worldwide evolution of modern archival institutions. The essay then explores the development of municipal archival programs in Delta and Richmond, British Columbia to reveal how they were conceived, advanced and sustained. The study concludes that local archival programs do fit into the Canadian tradition of "total archives", however, a conceptual framework which includes both the cultural and administrative purposes of archival institutions appears to be lacking. The conclusion summarizes some of the aspects of a conceptual framework including: the nature of archives, the legal status of public records and the need for archival legislation, the administrative role of an archival program, the need for a commitment of adequate resources, and the need for local governments to recognize their duty to preserve and make accessible public records of continuing value. / Arts, Faculty of / Library, Archival and Information Studies (SLAIS), School of / Graduate
5

Development of a salt marsh on the Fraser delta at Boundary Bay, British Columbia, Canada

Shepperd, Jane Elizabeth January 1981 (has links)
The development of a late Holocene salt marsh was studied on the inactive part of the Fraser Delta at Boundary Bay, southwestern British Columbia. Present-day vegetation zones near 64th Street, South Delta, in the western part of the Bay, were distinguished in the salt marsh and were related to zones found in cores obtained in a transect across the marsh. A sequence of development, related to elevation, was determined. Salicornia and Triglochin are pioneer colonizers of the tidal flats and are sometimes associated with areas elevated by algal mats. As the area was elevated, sediments were trapped by vegetation and stabilized by rhizomes, and other halophytes grew, including Cuscuta, Sperqularia, Atriplex, Distichlis, Grindelia, and Plantago. A zone characterized by abundant Atriplex represents positions of former strandlines. As further emergence occurred, mesophytes became dominant and, in the landward, most emergent zone, a diverse flora of Maius, Sjdalcea, Aster, AchiIlea, Solidaqo, Elymus, Angelica, Juncus, and grasses developed. A radiocarbon date on Salicornia-rich organic silts at a depth of 35 to 40 cm in core 5 suggests that salt marsh development commenced 320 ± 70 years B.P. (GSC-3186). A former salt marsh peat is now partially buried and being actively eroded where exposed near 112th Street, South Delta, in eastern Boundary Bay. A paleoenvironmental reconstruction suggests the peat started developing in freshwater, with ferns, sedges, Typha, and Nuphar. Later, it was successively inundated by marine water and a salt marsh developed, as seen by an increase in the abundance of chenopod pollen. Subsequent emergence of the salt marsh was accompanied by the development of an increasingly diverse vegetation. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate
6

West Coast aerodromes: the impact of the British Commonwealth Air Training Plan on Delta and Abbotsford, British Columbia.

Richdale, Ryan 16 April 2012 (has links)
The plan to train Commonwealth pilots and aircrew on Canadian soil from 1939-1945 was a critical component to the Allied victory in the Second World War. As part of the British Commonwealth Air Training Plan (BCATP), Canada graduated 131,553 men from training stations across the country. This thesis examines the experience of two British Columbia communities, Delta and Abbotsford, as hosts to BCATP stations. It concludes that both sites experienced a profound social and economic impact as a result of their role in training pilots and aircrew. Hosting a training station meant an immediate influx of jobs, infrastructure, money and excitement. In addition, the airfields left behind after the war ended still exist today as viable economic entities in their communities and as valuable hubs in Canada’s aviation network. / Graduate

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