title: The influence of fire on vegetation dynamics of a New Zealand restiad bog

authors: Wilson, Clara Renée

subjects: fire

abstract: New Zealand restiad bogs have a history of natural fire, yet little is known about their fire ecology compared to other frequently burnt ecosystems. Previous research has identified general vegetation recovery trends, but it remains unclear how certain species increase their dominance following fire and what the main environmental changes associated with burning are. To address these research gaps, this study focussed on three areas of varying last burn date (2017, 2005, and 1974) within Kopuatai Bog. 

Measures of vegetation dynamics, light availability, and nutrient concentrations (in peat and foliage) were compared between burnt and adjacent unburnt sites. At the 2017 burn site, post-fire flowering of the sedge species, Machaerina teretifolia and Schoenus brevifolius, was assessed. At the same site, near-surface temperature fluctuations were monitored for almost one year, and samples collected two weeks post-fire were used to test for immediate nutrient enrichment. The role of the peat seed bank was tested experimentally, by exposing peat to heat and/or smoke and assessing germination. 

Species capable of vegetative recovery dominated within the first two years post-fire. By 14 years, vegetation had largely recovered to pre-fire composition, although percent cover of Leptospermum scoparium, Machaerina teretifolia, Schoenus brevifolius, and Epacris pauciflora were higher on the burnt area. Leptospermum’s response can be explained by its well-documented serotinous capability. The increase in sedge species is attributed to their strong fire-stimulated flowering response, particularly in Machaerina, which averaged 30.4 flowering heads m-2 at the 2017 burn site. Epacris recovered from a rich peat seed bank, as demonstrated by the response in the germination experiment of 3143 seedlings m-2, on average. The effect of heat on germination was unclear. Further research, including improved heat treatments, is required to determine the effect of heat on seeds of restiad species, Empodisma robustum and Sporadanthus ferrugineus, which were relatively common in the control and smoke treatments. 

Fire resulted in immediate increases in peat total P, S, Ca, Mg, K, Na, Fe, Mn, Cu concentrations. These effects had declined by two years post-fire, although foliar nutrients suggest that plant-available nutrients may have still been elevated at this time. Peat total N was unaffected. Near-surface maximum and average air temperatures were found to be consistently higher on the burn, while minimum temperatures were seasonally variable. Fire caused an increase in light availability from 0.1-0.2% diffuse light availability under an intact Empodisma-dominated canopy to 19.5% 16 months post-fire – an effect which had subsided completely by 14 years post-fire. 

While nutrient enhancement, particularly in P, may temporarily enhance plant productivity, the most important driver of vegetation dynamics appears to be light. Fire opens up the canopy, providing an opportunity for seedlings to become established – an opportunity which Leptospermum, Epacris, and the sedge species take advantage of.

text: The influence of fire on vegetation dynamics of a New Zealand restiad bog New Zealand restiad bogs have a history of natural fire, yet little is known about their fire ecology compared to other frequently burnt ecosystems. Previous research has identified general vegetation recovery trends, but it remains unclear how certain species increase their dominance following fire and what the main environmental changes associated with burning are. To address these research gaps, this study focussed on three areas of varying last burn date (2017, 2005, and 1974) within Kopuatai Bog. 

Measures of vegetation dynamics, light availability, and nutrient concentrations (in peat and foliage) were compared between burnt and adjacent unburnt sites. At the 2017 burn site, post-fire flowering of the sedge species, Machaerina teretifolia and Schoenus brevifolius, was assessed. At the same site, near-surface temperature fluctuations were monitored for almost one year, and samples collected two weeks post-fire were used to test for immediate nutrient enrichment. The role of the peat seed bank was tested experimentally, by exposing peat to heat and/or smoke and assessing germination. 

Species capable of vegetative recovery dominated within the first two years post-fire. By 14 years, vegetation had largely recovered to pre-fire composition, although percent cover of Leptospermum scoparium, Machaerina teretifolia, Schoenus brevifolius, and Epacris pauciflora were higher on the burnt area. Leptospermum’s response can be explained by its well-documented serotinous capability. The increase in sedge species is attributed to their strong fire-stimulated flowering response, particularly in Machaerina, which averaged 30.4 flowering heads m-2 at the 2017 burn site. Epacris recovered from a rich peat seed bank, as demonstrated by the response in the germination experiment of 3143 seedlings m-2, on average. The effect of heat on germination was unclear. Further research, including improved heat treatments, is required to determine the effect of heat on seeds of restiad species, Empodisma robustum and Sporadanthus ferrugineus, which were relatively common in the control and smoke treatments. 

Fire resulted in immediate increases in peat total P, S, Ca, Mg, K, Na, Fe, Mn, Cu concentrations. These effects had declined by two years post-fire, although foliar nutrients suggest that plant-available nutrients may have still been elevated at this time. Peat total N was unaffected. Near-surface maximum and average air temperatures were found to be consistently higher on the burn, while minimum temperatures were seasonally variable. Fire caused an increase in light availability from 0.1-0.2% diffuse light availability under an intact Empodisma-dominated canopy to 19.5% 16 months post-fire – an effect which had subsided completely by 14 years post-fire. 

While nutrient enhancement, particularly in P, may temporarily enhance plant productivity, the most important driver of vegetation dynamics appears to be light. Fire opens up the canopy, providing an opportunity for seedlings to become established – an opportunity which Leptospermum, Epacris, and the sedge species take advantage of.

year: 2020

title: Intimate Geographies: Bodies, Underwear and Space in Hamilton, New Zealand

authors: Morrison, Carey-Ann

subjects: Female bodies

abstract: This thesis examines the ways in which a small group of young Pākehā women use underwear to construct a range of complex gendered subjectivities. I explore how these subjectivities are influenced by both material and discursive spaces. Three underwear shops in Hamilton, New Zealand - Bendon Lingerie Outlet, Bras N Things and Farmers, and various visual representations depicting contemporary notions of normative femininity, are under investigation
Feminist poststructuralist theories and methodologies provide the framework for this research. One focus group and three semi-structured interviews were conducted with young women who purchase and wear underwear. Participant observations of shoppers in Bendon Lingerie Outlet, Hamilton and autobiographical journal entries of my experiences as a retailer and consumer of underwear continued throughout the research. Advertising and promotional material in underwear shops and a DVD of a Victoria's Secret lingerie show are also examined.
Three points frame the analysis. First, I argue that underwear consumption spaces are discursively constructed as feminine. The socio-political structures governing these spaces construct particular types of bodies. These bodies are positioned as either 'in' place or 'out' of place. Second, underwear shops can be understood as feminised, young and thin embodied spaces. Bodies that fit this description are hence positioned as 'in' place. However, female bodies that are 'fat' and/or old and male bodies are marginalised within the space and thus positioned as 'out' of place. Third, I consider particular forms of normative femininity by examining the ways in which underwear disciplines and contains the body. Women's underwear moulds and shapes flesh to fit contemporary feminine norms.
Examining the specific relationship between the body, underwear and space provides a means to re-theorise geography and makes new ground for understanding how clothed bodies are constituted in and through space.

text: Intimate Geographies: Bodies, Underwear and Space in Hamilton, New Zealand This thesis examines the ways in which a small group of young Pākehā women use underwear to construct a range of complex gendered subjectivities. I explore how these subjectivities are influenced by both material and discursive spaces. Three underwear shops in Hamilton, New Zealand - Bendon Lingerie Outlet, Bras N Things and Farmers, and various visual representations depicting contemporary notions of normative femininity, are under investigation
Feminist poststructuralist theories and methodologies provide the framework for this research. One focus group and three semi-structured interviews were conducted with young women who purchase and wear underwear. Participant observations of shoppers in Bendon Lingerie Outlet, Hamilton and autobiographical journal entries of my experiences as a retailer and consumer of underwear continued throughout the research. Advertising and promotional material in underwear shops and a DVD of a Victoria's Secret lingerie show are also examined.
Three points frame the analysis. First, I argue that underwear consumption spaces are discursively constructed as feminine. The socio-political structures governing these spaces construct particular types of bodies. These bodies are positioned as either 'in' place or 'out' of place. Second, underwear shops can be understood as feminised, young and thin embodied spaces. Bodies that fit this description are hence positioned as 'in' place. However, female bodies that are 'fat' and/or old and male bodies are marginalised within the space and thus positioned as 'out' of place. Third, I consider particular forms of normative femininity by examining the ways in which underwear disciplines and contains the body. Women's underwear moulds and shapes flesh to fit contemporary feminine norms.
Examining the specific relationship between the body, underwear and space provides a means to re-theorise geography and makes new ground for understanding how clothed bodies are constituted in and through space.

year: 2007

title: Māori medical student and physician exposure to racism, discrimination, harassment, and bullying

authors: Cormack, Donna

abstract: IMPORTANCE: Discrimination, bullying, and harassment in medicine have been reported internationally, but exposures for Indigenous medical students and physicians, and for racism
specifically, remain less examined.
OBJECTIVE: To examine the prevalence of racism, discrimination, bullying, and harassment for Māori medical students and physicians in New Zealand and associations with demographic and clinical
characteristics.
DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study used data from an anonymous national survey of Māori medical students and physicians in New Zealand in late 2021 and early 2022.
Data were analyzed from March 2022 to April 2024.
EXPOSURES: Age, gender, marginalized status (ie, in addition to being Māori, belonging to other groups traditionally marginalized or underrepresented in medicine), year of medical school, year of
graduation, and main work role.
MAIN OUTCOMES AND MEASURES: Direct and witnessed racism, discrimination, bullying, and harassment were measured as any experience in the last year and ever. Any exposure to negative
comments about social groups and witnessing discriminatory treatment toward Māori patients or whānau (extended family). Considering leaving medicine, including because of mistreatment, was
measured.
RESULTS: Overall, 205 Māori medical students (median [IQR] age, 23.1 [21.6-24.3] years; 137 [67.2%] women) and 200 physicians (median [IQR] age, 36.6 [30.1-45.3] years; 123 [62.8%] women)
responded. Direct and witnessed exposure to racism (184 students [91.5%]; 176 physicians [90.7%]) and discrimination (176 students [85.9%]; 179 physicians [89.5%]) ever in medical education,
training, or work environments was common. Ever exposure to witnessed and direct bullying (123 students [66.5%]; 150 physicians [89.3%]) and harassment (73 students [39.5%]; 112 physicians
[66.7%]) was also common. Most respondents reported witnessing Māori patients or their whānau being treated badly in clinical settings, in direct interactions (67 students [57.8%]; 112 physicians
[58.9%]) or behind their backs (87 students [75.0%]; 138 physicians [72.6%]). One-quarter of Māori medical students (45 students), and 37.0%of physicians (61 physicians) had considered leaving or taken a break from medicine because of these experiences. Additional marginalized statuses were significantly associated with any direct experience of mistreatment in the last year for students and physicians. Exposure to some forms of mistreatment were also significantly associated with higher likelihood of thinking about leaving or taking a break from medicine for physicians.
CONCLUSIONS AND RELEVANCE: In this study, Māori medical students and physicians reported high exposure to multiple forms of racism, discrimination, bullying, and harassment in medical
education, training, and work environments, requiring an urgent response from medical institutions.

text: Māori medical student and physician exposure to racism, discrimination, harassment, and bullying IMPORTANCE: Discrimination, bullying, and harassment in medicine have been reported internationally, but exposures for Indigenous medical students and physicians, and for racism
specifically, remain less examined.
OBJECTIVE: To examine the prevalence of racism, discrimination, bullying, and harassment for Māori medical students and physicians in New Zealand and associations with demographic and clinical
characteristics.
DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study used data from an anonymous national survey of Māori medical students and physicians in New Zealand in late 2021 and early 2022.
Data were analyzed from March 2022 to April 2024.
EXPOSURES: Age, gender, marginalized status (ie, in addition to being Māori, belonging to other groups traditionally marginalized or underrepresented in medicine), year of medical school, year of
graduation, and main work role.
MAIN OUTCOMES AND MEASURES: Direct and witnessed racism, discrimination, bullying, and harassment were measured as any experience in the last year and ever. Any exposure to negative
comments about social groups and witnessing discriminatory treatment toward Māori patients or whānau (extended family). Considering leaving medicine, including because of mistreatment, was
measured.
RESULTS: Overall, 205 Māori medical students (median [IQR] age, 23.1 [21.6-24.3] years; 137 [67.2%] women) and 200 physicians (median [IQR] age, 36.6 [30.1-45.3] years; 123 [62.8%] women)
responded. Direct and witnessed exposure to racism (184 students [91.5%]; 176 physicians [90.7%]) and discrimination (176 students [85.9%]; 179 physicians [89.5%]) ever in medical education,
training, or work environments was common. Ever exposure to witnessed and direct bullying (123 students [66.5%]; 150 physicians [89.3%]) and harassment (73 students [39.5%]; 112 physicians
[66.7%]) was also common. Most respondents reported witnessing Māori patients or their whānau being treated badly in clinical settings, in direct interactions (67 students [57.8%]; 112 physicians
[58.9%]) or behind their backs (87 students [75.0%]; 138 physicians [72.6%]). One-quarter of Māori medical students (45 students), and 37.0%of physicians (61 physicians) had considered leaving or taken a break from medicine because of these experiences. Additional marginalized statuses were significantly associated with any direct experience of mistreatment in the last year for students and physicians. Exposure to some forms of mistreatment were also significantly associated with higher likelihood of thinking about leaving or taking a break from medicine for physicians.
CONCLUSIONS AND RELEVANCE: In this study, Māori medical students and physicians reported high exposure to multiple forms of racism, discrimination, bullying, and harassment in medical
education, training, and work environments, requiring an urgent response from medical institutions.

year: 0202-07-01