Global ETD Search

1	Identifying and interpreting geoarchaeological sites with high prospecting potential using aerial LIDAR, GIS and sedimentological analysis Lausanne, Alexandra 03 May 2018 (has links) The dynamic environmental history and relative sea level (RSL) changes experienced on the Pacific Northwest Coast of North America during the early post-glacial period and the early Holocene resulted in significant visibility challenges for prospection of early coastal archaeological sites. Archaeological visibility is the degree to which cultural material survives post-depositional processes and is detectable on the landscape today. It is influenced by environmental factors such as localized differences in relative sea level change, the rainforest canopy and dynamic post-glacial activity. This study offers an integrated methodological approach for locating palaeo-coastal sites by combining: i) geomorphic interpretation of landscape attributes captured by LIDAR (Light Detection and Ranging) mapping, ii) GIS-based archaeological site potential mapping, and iii) local RSL history. The RSL history for the study site (Quadra Island, British Columbia, Canada) shows notable regression over the past 14 500 years from a highstand of at least 195 m resulting from post-glacial isostatic rebound. Late Pleistocene and early Holocene palaeo-shorelines are found inland from, and elevated above, modern sea level and represent key areas for archaeological prospecting. Bare-earth Digital Terrain Models (DTMs) derived from the LIDAR dataset were interpreted to identify palaeo-shorelines at 10 m and 30 m above modern mean sea level. A GIS-derived map was created to identify regions of high archaeological potential using a decision tree method with variables including distance to palaeo-shoreline, low slope and a coastal complexity parameter. Select geoarchaeological sites were examined in terms of sedimentology, stratigraphy, microfossil content and geochronology as site-specific examples of sea level regression stillstands. Field validation results suggest that this integrated methodology provides a promising approach for archaeological prospection that could be applied to other post-glacial coastal settings. / Graduate Pacific Northwest Coast sea levels LIDAR Archaeology Glacial isostasy Shorelines Archaeological geology
2	Modeling the effect of neighborhood competition on tree diameter growth in the Pacific Northwest Coast Range Naing, Htet Lin 08 August 2023 (has links) (PDF) Trees compete for various resources such as sunlight, water, and nutrients, which can be expressed as numerical terms, called competition indices (CI). Competition between individual trees is correlated with their growth and mortality. Therefore, CIs are used as independent variables to develop, improve and modify growth and yield models. This study was conducted to test the effect of neighborhood competition on tree diameter growth among Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), western hemlock (Tsuga heterophylla (Raf.) Sarg) and red alder (Alnus rubra Bong.), in the Pacific Northwest Coast Range, USA. After testing seven distance-independent CIs and three distance-dependent CIs, only the distance-independent CIs were found to significantly affect the diameter growth model. Among them, CIs with basal area and diameter information were the most impactful. As a result, a simple CI was very effective in a model that accounts for the basal area information of different tree species. growth and yield models diameter growth models neighborhood competition competition index carbon biomass Douglas-fir western hemlock red alder Pacific Northwest Coast Range Forest Biology Forest Management Forest Sciences Other Forestry and Forest Sciences
3	Subsistence at Si•čǝ’nǝł: the Willows Beach site and the culture history of southeastern Vancouver Island Willerton, Ila Moana 03 September 2009 (has links) Culture types in Pacific Northwest archaeology are characteristic artifact assemblages distinguishing different prehistoric periods. Assemblages indicate a culture type transition during the 2,630 BP–270 BP occupation of Willows Beach (DcRt-10), southeastern Vancouver Island. Faunal remains could reveal links to subsistence patterns, following Croes’s theory that culture type change reflects subsistence intensification. Five dated DcRt-10 faunal assemblages underwent taxonomic and size classification, weighing and MNI calculation. Vertebrate weight and NISP percentages were compared between stratigraphic units associated with the later Gulf of Georgia and earlier Locarno Beach culture types. The youngest assemblage contains a smaller proportion of land mammal bone, suggesting increased sea mammal, fish, and bird procurement. Faunal remains also suggest a greater variety of taxa exploited over time. Faunal assemblages suggest that culture type change at DcRt-10 is the product of subsistence change, increasing knowledge of the culture historic sequence of this region. Willows Beach Vancouver Island zooarchaeology subsistence Pacific Northwest Coast culture types culture historic sequence Locarno Beach Gulf of Georgia faunal assemblages DcRt-10 faunal remains MNI NISP bone weight faunal identification radiocarbon dates column sample artifact assemblages harpoons bone points taphonomy taxonomic categories subsistence change
4	Canoes and colony: the dugout canoe as a site of intercultural engagement in the colonial context of British Columbia (1849-1871) Wenstob, Stella Maris 15 April 2015 (has links) The cedar dugout canoe is iconically associated with First Nations peoples of the Pacific Northwest coast, but the vital contribution it made to the economic and social development of British Columbia is historically unrecognized. This beautifully designed and crafted oceangoing vessel, besides being a prized necessity to the maritime First Nations peoples, was an essential transportation link for European colonists. In speed, maneuverability, and carrying capacity it vied with any other seagoing technology of the time. The dugout canoe became an important site of engagement between First Nations peoples and settlers. European produced textual and visual records of the colonial period are examined to analyze the dugout canoe as a site of intercultural interaction with a focus upon the European representation. This research asks: Was the First Nations' dugout canoe essential to colonial development in British Columbia and, if so, were the First Nations acknowledged for this vital contribution? Analysis of primary archival resources (letters and journals), images (photographs, sketches and paintings) and colonial publications, such as the colonial dispatches, memoirs and newspaper accounts, demonstrate that indeed the dugout canoe and First Nations canoeists were essential to the development of the colony of British Columbia. However, these contributions were differentially acknowledged as the colony shifted from a fur trade-oriented operation to a settler-centric development that emphasized the alienation of First Nations’ land for settler use. By focusing research on the dugout canoe and its use and depiction by Europeans, connections between European colonists and First Nations canoeists, navigators and manufacturers are foregrounded. This focus brings together these two key historical players demonstrating their “entangled” nature (Thomas 1991:139) and breaking down “silences” and “trivializations” in history (Trouillot 1995:96), working to build an inclusive and connected history of colonial British Columbia. / Graduate dugout canoe cedar canoe Pacific Northwest coast British Columbia history Colonial development Colonial period (1849-1871) Canadian history Indigenous labour Indigenous technology Intercultural engagement Entanglement Representation First Nations peoples Art history Settler Newcomer-aboriginal relations Kwakwa̱ka̱’wakw Transportation Erasure/ silences Hidden history Material culture studies Recreation Regatta mail delivery surveying Shared history Coast Salish Nuu-chah-nulth Haida Maritime technology Cultural anthropology Ethnohistory Labour studies Heiltsuk Visual anthropology Verbal representation

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