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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.
111

Salmon: A Scientific Memoir

Isabella, Jude 28 August 2013 (has links)
The reason for this story was to investigate a narrative that is important to the identity of North America’s Pacific Northwest Coast – a narrative that revolves around wild salmon, a narrative that always seemed too simple to me, a narrative that gives salmon a mythical status, and yet what does the average person know about this fish other than it floods grocery stores in fall and tastes good. How do we know this fish that supposedly defines the natural world of this place? I began my research as a science writer, inspired by John Steinbeck’s The Log from the Sea of Cortez, in which he writes that the best way to achieve reality is by combining narrative with scientific data. So I went looking for a different story from the one most people read about in popular media, a story that’s overwhelmingly about conflict: I searched for a narrative that combines the science of what we know about salmon and a story of the scientists who study the fish, either directly or indirectly. I tried to follow Steinbeck’s example and include the narrative journeys we take in understanding the world around us, the journeys that rarely make it into scientific journals. I went on about eight field trips with biology, ecology, and archaeology lab teams from the University of British Columbia and Simon Fraser University in Vancouver, with the Department of Fisheries and Oceans onboard the Canadian Coast Guard Ship the W.E. Ricker, and an archaeological crew from the Laich-Kwil-Tach Treaty Society in Campbell River, B.C. At the same time, I was reading a number of things, including a 1938 dissertation by anthropologist Homer Barnett from the University of Oregon titled The Nature and Function of the Potlatch, a 2011 book by economist Ronald Trosper at the University of Arizona, Resilience, Reciprocity and Ecological Economics, and works by psychologist Douglas Medin at Northwestern University and anthropologist Scott Atran at the University of Michigan, written over the past two decades, particular paying attention to their writings on taxonomy and folkbiology. My conclusions surprised me, a little. / Graduate / 0329 / 0324 / 0391
112

Salmon: A Scientific Memoir

Isabella, Jude 28 August 2013 (has links)
The reason for this story was to investigate a narrative that is important to the identity of North America’s Pacific Northwest Coast – a narrative that revolves around wild salmon, a narrative that always seemed too simple to me, a narrative that gives salmon a mythical status, and yet what does the average person know about this fish other than it floods grocery stores in fall and tastes good. How do we know this fish that supposedly defines the natural world of this place? I began my research as a science writer, inspired by John Steinbeck’s The Log from the Sea of Cortez, in which he writes that the best way to achieve reality is by combining narrative with scientific data. So I went looking for a different story from the one most people read about in popular media, a story that’s overwhelmingly about conflict: I searched for a narrative that combines the science of what we know about salmon and a story of the scientists who study the fish, either directly or indirectly. I tried to follow Steinbeck’s example and include the narrative journeys we take in understanding the world around us, the journeys that rarely make it into scientific journals. I went on about eight field trips with biology, ecology, and archaeology lab teams from the University of British Columbia and Simon Fraser University in Vancouver, with the Department of Fisheries and Oceans onboard the Canadian Coast Guard Ship the W.E. Ricker, and an archaeological crew from the Laich-Kwil-Tach Treaty Society in Campbell River, B.C. At the same time, I was reading a number of things, including a 1938 dissertation by anthropologist Homer Barnett from the University of Oregon titled The Nature and Function of the Potlatch, a 2011 book by economist Ronald Trosper at the University of Arizona, Resilience, Reciprocity and Ecological Economics, and works by psychologist Douglas Medin at Northwestern University and anthropologist Scott Atran at the University of Michigan, written over the past two decades, particular paying attention to their writings on taxonomy and folkbiology. My conclusions surprised me, a little. / Graduate / 0329 / 0324 / 0391
113

Invasive species removal and changing fire regimes in a lək̓ʷəŋən Garry oak ecosystem

Lysgaard, Cole 31 January 2022 (has links)
This thesis examines restoration of Garry oak ecosystems in Southwestern British Columbia, Canada. Before the arrival of European settlers, Coast Salish peoples practiced intensive stewardship and cultivation practices that heavily shaped Garry oak ecosystems. These long-standing stewardship practices are responsible for the abundance of culturally important plants found in Garry oak ecosystems today. In addition to their cultural value to Coast Salish peoples, Garry oak ecosystems also support unique biodiversity, including numerous at-risk species. These ecosystems and the values they embody came under threat with the arrival of European settlers, who introduced non-native plants and excluded Coast Salish peoples and their stewardship practices from these ecosystems. Today, Garry oak ecosystems have been reduced to a fraction of their pre-colonial distribution and remaining patches are typically heavily invaded by both native and non-native plants. Their cultural and biological values coupled with ongoing degradation has motivated both Indigenous and non-Indigenous land managers to implement restoration programs in Garry oak ecosystems. To inform future restoration efforts, this thesis examines ecological impacts of a long-term restoration program and a wildfire in a lək̓ʷəŋən Garry oak ecosystem at Mill Hill Regional Park near Langford, British Columbia. In Project 1, vegetation responses to a 13-year invasive species removal program were quantified to determine if native plant populations were successfully bolstered by the removal efforts. In Project 2, impacts of an unintended wildfire on the relative cover of native and non-native plants were examined. This attempted to explore potential ecosystem shifts that may occur as wildfires increase in frequency and severity as predicted by climate models. In Project 1, the greatest change observed after invasive species removal was an increase in other introduced species, while increases in native species were not statistically significant. In Project 2, introduced Anthoxanthum odoratum was facilitated by fire while native Camassia spp. were reduced by it. Taken together, these results demonstrate the complexity of restoring Indigenously managed ecosystems where multiple introduced species have existed for long periods. Invasive species, specifically Anthoxanthum odoratum, showed greater responses to removal efforts and wildfire than native species. Intensive, long-term restoration programs that utilize multiple tools, including low-intensity fire, invasive removal, herbicide, and seeding of native species appear necessary to bolster native species without unintentional facilitation of introduced species. Coast Salish peoples and stewardship practices were integral in maintaining these ecosystems before the arrival of European settlers and should play a key role in their restoration today, though traditional practices will likely need adapted to account for environmental changes caused by colonization. Furthermore, to avoid continuing the cultural damage that began with colonization, it is vital that Coast Salish First Nations lead or be directly involved in restoration of these ecosystems, which continue to hold irreplaceable cultural value. / Graduate / 2023-01-14
114

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
115

Kamloops Chinuk Wawa, Chinuk pipa, and the vitality of pidgins

Robertson, David Douglas 07 February 2012 (has links)
This dissertation presents the first full grammatical description of unprompted (spontaneous) speech in pidgin Chinook Jargon [synonyms Chinúk Wawa, Chinook]. The data come from a dialect I term ‘Kamloops Chinúk Wawa’, used in southern interior British Columbia circa 1900. I also present the first historical study and structural analysis of the shorthand-based ‘Chinuk pipa’ alphabet in which Kamloops Chinúk Wawa was written, primarily by Salish people. This study is made possible by the discovery of several hundred such texts, which I have transliterated and analyzed. The Basic Linguistic Theory-inspired (cf. Dixon 2010a,b) framework used here interprets Kamloops Chinúk Wawa as surprisingly ramified in morphological and syntactic structure, a finding in line with recent studies reexamining the status of pidgins by Bakker (e.g. 2003a,b, forthcoming) among others. Among the major findings: an unusually successful pidgin literacy including a widely circulated newspaper Kamloops Wawa, and language planning by the missionary J.M.R. Le Jeune, O.M.I. He planned both for the use of Kamloops Chinúk Wawa and this alphabet, and for their replacement by English. Additional sociolinguistic factors determining how Chinuk pipa was written included Salish preferences for learning to write by whole-word units (rather than letter by letter), and toward informal intra-community teaching of this first group literacy. In addition to compounding and conversion of lexical roots, Kamloops Chinúk Wawa morphology exploited three types of preposed grammatical morphemes—affixes, clitics, and particles. Virtually all are homonymous with and grammaticalized from demonstrably lexical morphs. Newly identified categories include ‘out-of-control’ transitivity marking and discourse markers including ‘admirative’ and ‘inferred’. Contrary to previous claims about Chinook Jargon (cf. Vrzic 1999), no overt passive voice exists in Kamloops Chinúk Wawa (nor probably in pan-Chinook Jargon), but a previously unknown ‘passivization strategy’ of implied agent demotion is brought to light. A realis-irrealis modality distinction is reflected at several scopal levels: phrase, clause and sentence. Functional differences are observed between irrealis clauses before and after main clauses. Polar questions are restricted to subordinate clauses, while alternative questions are formed by simple juxtaposition of irrealis clauses. Main-clause interrogatives are limited to content-question forms, optionally with irrealis marking. Positive imperatives are normally signaled by a mood particle on a realis clause, negative ones by a negative particle. Aspect is marked in a three-part ingressive-imperfective-completive system, with a marginal fourth ‘conative’. One negative operator has characteristically clausal, and another phrasal, scope. One copula is newly attested. Degree marking is largely confined to ‘predicative’ adjectives (copula complements). Several novel features of pronoun usage possibly reflect Salish L1 grammatical habits: a consistent animacy distinction occurs in third-person pronouns, where pan-Chinook Jargon 'iaka' (animate singular) and 'klaska' (animate plural) contrast with a null inanimate object/patient; this null and 'iaka' are non-specified for number; in intransitives, double exponence (repetition) of pronominal subjects is common; and pan-Chinook Jargon 'klaksta' (originally ‘who?’) and 'klaska' (originally ‘they’) vary freely with each other. Certain etymologically content-question forms are used also as determiners. Kamloops Chinúk Wawa’s numeral system is unusually regular and small for a pidgin; numerals are also used ordinally in a distinctly Chinook Jargon type of personal name. There is a null allomorph of the preposition 'kopa'. This preposition has additionally a realis complementizer function (with nominalized predicates) distinct from irrealis 'pus' (with verbal ones). Conjunction 'pi' also has a function in a syntactic focus-increasing and -reducing system. / Graduate
116

Tidal sedimentology and geomorphology in the central Salish Sea straits, British Columbia and Washington State

Mullan, Sean 03 January 2018 (has links)
Intra-archipelago waterways, including tidal strait networks, present a complex set of barriers to, and conduits for sediment transport between marine basins. Tidal straits may also be the least well understood tide-dominated sedimentary environment. To address these issues, currents, sediment transport pathways, and seabed sedimentology & geomorphology were studied in the central Salish Sea (Gulf and San Juan Islands region) of British Columbia, Canada and Washington State, USA. A variety of data types were integrated: 3D & 2D tidal models, multibeam bathymetry & backscatter, seabed video, grab samples, cores and seismic reflection. This dissertation included the first regional sediment transport modelling study of the central Salish Sea. Lagrangian particle dispersal simulations were driven by 2D tidal hydrodynamics (~59-days). It was found that flood-tide dominance through narrow intra-archipelago connecting straits resulted in the transfer of sediment into the inland Strait of Georgia, an apparent sediment sink. The formative/maintenance processes at a variety of seabed landforms, including a banner bank with giant dunes, were explained with modelled tides and sediment transport. Deglacial history and modern lateral sedimentological and morphological transitions were also considered. Based on this modern environment, adjustments to the tidal strait facies model were identified. In addition, erosion and deposition patterns across the banner bank (dune complex) were monitored with 8-repeat multibeam sonar surveys (~10 years). With these data, spatially variable bathymetric change detection techniques were explored: A) a cell-by-cell probabilistic depth uncertainty-based threshold (t-test); and B) coherent clusters of change pixels identified with the local Moran's Ii spatial autocorrelation statistic. Uncertainty about volumetric change is a considerable challenge in seabed change research, compared to terrestrial studies. Consideration of volumetric change confidence intervals tempers interpretations and communicates metadata. Techniques A & B may both be used to restrict volumetric change calculations in area, to exclude low relative bathymetric change signal areas. / Graduate / 2018-12-07

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