During a long and distinguished career, the Canadian composer Jean Coulthard (b. 1908) has become widely recognized for her many works for voice, keyboard, choir and chamber ensembles. Until recently, however, her large and diverse catalogue of works for orchestra has been overshadowed. The present study presents a critical assessment of her orchestral catalogue of music composed from the late 1930s until the present. In a biographical introduction, Coulthard's initial training with Vaughan Williams in London is discussed, as is her life-long identification with the early French modern figures Debussy and Ravel. As her career progressed, her earliest orchestral scores were championed by the Australian-born composer/conductor Arthur Benjamin (who resided in Coulthard's native Vancouver, Canada, during the formative years of her development as an orchestral composer). Further training brought her into contact with figures such as Copland, Milhaud, Bartok, and Schoenberg, as well as studies with Bernard Wagenaar in New York. Following her protracted apprenticeship, Coulthard began to teach at the University of British Columbia and to commit to the major genres of orchestral writing. In this later respect she was somewhat atypical of Canadian composers of her generation, and has been viewed by earlier scholars as an exponent of the "conservative tradition" in Canadian music of the 20th century. More recent perspectives stress the quality of her work, her regional significance, and the uniqueness of her achievement in a field of music not traditionally associated with women. Paralleling Coulthard's personal and artistic development, a consideration of Canadian orchestras and the emergence of a Canadian orchestral repertoire is presented. Coulthard's orchestral repertoire includes orchestral suites, small scale orchestra compositions, works for strings, works for soloist(s) and orchestra, concerti, and symphonies. A comprehensive overview of Coulthard's extant orchestral works is presented, with a number of particularly important compositions singled out for detailed analysis. As well major style elements, aspects of Coulthard's role in Canadian music and a brief assessment of her creative personality are included. / Graduate

Atmospheric CO₂ enrichment is employed by greenhouse tomato growers to increase fruit yields, and CO₂ applications are managed according to atmospheric set points or CO₂ injection rates. These methods do not immediately focus on the targets of CO₂ applications: plant performance and the regulation of plant carbon status. This thesis explores several plant-based approaches that may have potential for use in the management of CO₂ in greenhouse tomato production. Three plant-based approaches to CO₂ management were explored in commercial and experimental tomato greenhouses. These were: (1) simulation modeling, (2) non-destructive analysis of growth and (3) the status of plant carbon reserves. A cost and benefit analysis (c/b) using simulation modeling was carried out using grower-collected greenhouse environment and yield data. Simulation modeling was useful for retrospectively determining c/b of several CO₂ scenarios. The model was effective in predicting long term yields, but not short term yield variations, which limits its application for CO₂ management. Non-destructive measures of growth: stem length and diameter, leaf area and fruit load were found to be too sluggish for daily CO₂ dosing decision-making. Finally, plants growing under CO₂ enrichment can deposit substantial carbon as starch in their leaves. Plant carbon status was evaluated by determining the spatial distribution of leaf starch in the shoot and by following its variation diurnally and after the onset of CO₂ enrichment. As starch is difficult to measure by a grower, leaf mass per unit area (LMA) was also monitored for assessment as a surrogate measure for starch. Leaves in positions 7 to 9 were identified as the most meaningful in the shoot to sample. Diurnal profiles indicated these leaves carryover substantial starch from one day to the next. Monitoring starch at its peak time of accumulation (14 h to 16 h), at sunset and sunrise will indicate how much the peak starch reserves are used overnight. If starch remains high between peak and sunrise the following day, then the plants are in a carbon-surplus state and CO₂ enrichment could be postponed. For upper canopy leaves LMA is substantially influenced by starch and thus is a promising surrogate.

Atmospheric CO₂ enrichment is employed by greenhouse tomato growers to increase fruit yields, and CO₂ applications are managed according to atmospheric set points or CO₂ injection rates. These methods do not immediately focus on the targets of CO₂ applications: plant performance and the regulation of plant carbon status. This thesis explores several plant-based approaches that may have potential for use in the management of CO₂ in greenhouse tomato production. Three plant-based approaches to CO₂ management were explored in commercial and experimental tomato greenhouses. These were: (1) simulation modeling, (2) non-destructive analysis of growth and (3) the status of plant carbon reserves. A cost and benefit analysis (c/b) using simulation modeling was carried out using grower-collected greenhouse environment and yield data. Simulation modeling was useful for retrospectively determining c/b of several CO₂ scenarios. The model was effective in predicting long term yields, but not short term yield variations, which limits its application for CO₂ management. Non-destructive measures of growth: stem length and diameter, leaf area and fruit load were found to be too sluggish for daily CO₂ dosing decision-making. Finally, plants growing under CO₂ enrichment can deposit substantial carbon as starch in their leaves. Plant carbon status was evaluated by determining the spatial distribution of leaf starch in the shoot and by following its variation diurnally and after the onset of CO₂ enrichment. As starch is difficult to measure by a grower, leaf mass per unit area (LMA) was also monitored for assessment as a surrogate measure for starch. Leaves in positions 7 to 9 were identified as the most meaningful in the shoot to sample. Diurnal profiles indicated these leaves carryover substantial starch from one day to the next. Monitoring starch at its peak time of accumulation (14 h to 16 h), at sunset and sunrise will indicate how much the peak starch reserves are used overnight. If starch remains high between peak and sunrise the following day, then the plants are in a carbon-surplus state and CO₂ enrichment could be postponed. For upper canopy leaves LMA is substantially influenced by starch and thus is a promising surrogate.

Atmospheric CO₂ enrichment is employed by greenhouse tomato growers to increase fruit yields, and CO₂ applications are managed according to atmospheric set points or CO₂ injection rates. These methods do not immediately focus on the targets of CO₂ applications: plant performance and the regulation of plant carbon status. This thesis explores several plant-based approaches that may have potential for use in the management of CO₂ in greenhouse tomato production. Three plant-based approaches to CO₂ management were explored in commercial and experimental tomato greenhouses. These were: (1) simulation modeling, (2) non-destructive analysis of growth and (3) the status of plant carbon reserves. A cost and benefit analysis (c/b) using simulation modeling was carried out using grower-collected greenhouse environment and yield data. Simulation modeling was useful for retrospectively determining c/b of several CO₂ scenarios. The model was effective in predicting long term yields, but not short term yield variations, which limits its application for CO₂ management. Non-destructive measures of growth: stem length and diameter, leaf area and fruit load were found to be too sluggish for daily CO₂ dosing decision-making. Finally, plants growing under CO₂ enrichment can deposit substantial carbon as starch in their leaves. Plant carbon status was evaluated by determining the spatial distribution of leaf starch in the shoot and by following its variation diurnally and after the onset of CO₂ enrichment. As starch is difficult to measure by a grower, leaf mass per unit area (LMA) was also monitored for assessment as a surrogate measure for starch. Leaves in positions 7 to 9 were identified as the most meaningful in the shoot to sample. Diurnal profiles indicated these leaves carryover substantial starch from one day to the next. Monitoring starch at its peak time of accumulation (14 h to 16 h), at sunset and sunrise will indicate how much the peak starch reserves are used overnight. If starch remains high between peak and sunrise the following day, then the plants are in a carbon-surplus state and CO₂ enrichment could be postponed. For upper canopy leaves LMA is substantially influenced by starch and thus is a promising surrogate. / Land and Food Systems, Faculty of / Graduate

This thesis examines the beginning of Victoria, British Columbia’s, women’s movement, stretching its ‘start’ date to the late 1850s while arguing that, to some extent, the local movement criss-crossed racial, ethnic, religious, and gender boundaries. It also highlights how the people involved with the women’s movement in Victoria challenged traditional beliefs, like separate sphere ideology, about women’s position in society and contributed to the introduction of new more egalitarian views of women in a process that continues to the present day. Chapter One challenges current understandings of First Wave Feminism, stretching its limitations regarding time and persons involved with social reform and women’s rights goals, while showing that the issue of ‘suffrage’ alone did not make a ‘women’s movement’. Chapter 2 focuses on how the local ‘women’s movement’ coalesced and expanded in the late 1890s to embrace various social reform causes and demands for women’s rights and recognition, it reflected a unique spirit that emanated from Victorian traditionalism, skewed gender ratios, and a frontier mentality. Chapter 3 argues that an examination of Victoria’s movement, like any other ‘women’s movement’, must take into consideration the ethnic and racialized ‘other’, in this thesis the Indigenous, African Canadian, and Chinese. The Conclusion discusses areas for future research, deeper research questions, and raises the question about whether the women’s movement in Victoria was successful. / Graduate / 0334 / 0733 / 0631 / mlihmels@shaw.ca