title: Supervision in educational contexts: raising the stakes in a global world

authors: Cornforth, Sue

subjects: supervision

abstract: This paper brings together discourses surrounding two areas of supervision, educational and clinical, in order to address the increasing complexity of academic life. Educational supervision of postgraduate student researchers resonates with more clinical supervision practices. All are widely perceived as beneficial and promoted on ethical grounds. However, a comparison foregrounds supervision's problematic and questionable association with a neo-liberal economic agenda. Following a desire to speak the unspeakable in academic spaces, we apply a discursively informed critical analysis to describe supervision as an affluent, professional response to an increasingly restrictive individualism, which compounds the isolating function of an unsustainable regime. We explore the possibilities that supervisory practices offer as an organisational space in the domain of power, locating untapped potential in their ambivalence. We invite a radical revisioning of supervision as a platform that might have potential for an increasingly subversive and inclusive voice in higher education.

text: Supervision in educational contexts: raising the stakes in a global world This paper brings together discourses surrounding two areas of supervision, educational and clinical, in order to address the increasing complexity of academic life. Educational supervision of postgraduate student researchers resonates with more clinical supervision practices. All are widely perceived as beneficial and promoted on ethical grounds. However, a comparison foregrounds supervision's problematic and questionable association with a neo-liberal economic agenda. Following a desire to speak the unspeakable in academic spaces, we apply a discursively informed critical analysis to describe supervision as an affluent, professional response to an increasingly restrictive individualism, which compounds the isolating function of an unsustainable regime. We explore the possibilities that supervisory practices offer as an organisational space in the domain of power, locating untapped potential in their ambivalence. We invite a radical revisioning of supervision as a platform that might have potential for an increasingly subversive and inclusive voice in higher education.

year: 2008

title: Condensation corrosion alters the oxygen and carbon isotope ratios of speleothem and limestone surfaces

authors: White, Jackson H.

abstract: Condensation corrosion is a natural process which enhances the chemical weathering of limestone cave chambers and speleothems. We evaluated the use of carbonate tablets for detecting condensation corrosion in Glowworm Cave, New Zealand, using local limestone and speleothem as experimental substrates (herein tablets). Evidence for condensation corrosion was assessed via three methods: gravimetric (mass wasting), microscopic (surface pitting, recrystallization) and isotopic (δ¹³C and δ¹⁸O changes). Our results show little evidence of tablet mass loss throughout a 6-month deployment period. However, SEM imaging and isotope analysis (δ¹³C and δ¹⁸O) of the upper ∼50 μm layer of the tablets, suggest that condensation corrosion operates in the cave, especially in sectors affected by large diurnal microclimate variations.

Most notably, condensation water altered the tablet surface δ¹³C and δ¹⁸O values. Small, positive shifts in surface δ¹³C and δ¹⁸O values are considered to reflect pure dissolution (where dissolution favours the removal of lighter isotopologues). In contrast, tablets that exhibited large positive shifts in δ¹³C in tandem with large negative shifts in δ¹⁸O values, are interpreted as showing calcite recrystallization and the inheritance of higher DIC δ¹³C values (¹³C fractionation by CO₂ degassing), lighter water δ¹⁸O values and/or kinetic fractionation of δ¹⁸O. This study therefore demonstrates that stable isotopes could be applied to detect paleoclimatic episodes of condensation corrosion in speleothems.

text: Condensation corrosion alters the oxygen and carbon isotope ratios of speleothem and limestone surfaces Condensation corrosion is a natural process which enhances the chemical weathering of limestone cave chambers and speleothems. We evaluated the use of carbonate tablets for detecting condensation corrosion in Glowworm Cave, New Zealand, using local limestone and speleothem as experimental substrates (herein tablets). Evidence for condensation corrosion was assessed via three methods: gravimetric (mass wasting), microscopic (surface pitting, recrystallization) and isotopic (δ¹³C and δ¹⁸O changes). Our results show little evidence of tablet mass loss throughout a 6-month deployment period. However, SEM imaging and isotope analysis (δ¹³C and δ¹⁸O) of the upper ∼50 μm layer of the tablets, suggest that condensation corrosion operates in the cave, especially in sectors affected by large diurnal microclimate variations.

Most notably, condensation water altered the tablet surface δ¹³C and δ¹⁸O values. Small, positive shifts in surface δ¹³C and δ¹⁸O values are considered to reflect pure dissolution (where dissolution favours the removal of lighter isotopologues). In contrast, tablets that exhibited large positive shifts in δ¹³C in tandem with large negative shifts in δ¹⁸O values, are interpreted as showing calcite recrystallization and the inheritance of higher DIC δ¹³C values (¹³C fractionation by CO₂ degassing), lighter water δ¹⁸O values and/or kinetic fractionation of δ¹⁸O. This study therefore demonstrates that stable isotopes could be applied to detect paleoclimatic episodes of condensation corrosion in speleothems.

year: 2021

title: When Two Worlds Collide: Mātauranga Māori, Science and Health of the Toreparu Wetland

authors: Robb, Mahuru Joyce Gordon

subjects: Mātauranga Māori

abstract: Much of our understanding of wetland health and function comes from scientific-based monitoring and methodologies. However, there is a wealth of knowledge to be gained from Māori-value based assessment methods for monitoring wetlands in New Zealand. I used the Wetland Cultural Health Index (WCHI) and a variety of scientific wetland survey methods to examine how these two approaches complement each other. For this research, I worked with the people from Mōtakotako marae at the Toreparu wetland (Waikato), developing a set of site specific cultural indicators. 
Comparative analysis revealed a range of similarities and differences between the WCHI indices and scientific parameters. We found that as Wetland Cultural Health Measure (WCHM) scores increased, there was also an increase in dissolved oxygen concentration, SQMCI-sb values, and total nitrogen concentrations. Cultural indices provided an overall indication of site health. It was apparent, however, that scores of contributing indicators could vary markedly at any one site. As such, high scores for some indicators (e.g., vegetation values) may obscure low values for other variables (e.g., water quality), providing an index that depicts site health as being of average condition. 
Capacity and resourcing issues were also highlighted as being an issue for Māori to be able to successfully carry out wetland monitoring, but also for staff in councils and other research and environmental governing bodies to build and maintain relationships with tangata whenua. Other challenges around site access provided a unique opportunity to develop and trial new WCHI assessment techniques. The use of video assessment to carry out WCHI monitoring was of varying success. Indicators that could be scored by visual assessment were useful, but indicators that relied on sound or felt sensation were difficult to assess. The use of mauri (life force) as an indicator had benefits when applied to the whole catchment, but the volunteer participants challenged its validity when used at the smaller site scale. Volunteers found assigning a numerical value to mauri very difficult, and felt that reducing mauri to a single number may diminish the significance of this holistic and metaphysical concept.  Mauri has been used successfully as a measure of environmental health but it is important to communicate and understand what mauri is and why it is measured.
Overall, the WCHI provided a wealth of information that could not be captured through scientific sampling, such as the presence of dye source, loss of bird/fish species and baseline information on the past condition of the Toreparu before the surrounding land was converted for agricultural use. This confirms that our understanding of wetland health is enhanced through the inclusion of cultural values.
As the New Zealand government and Māori move towards a future of collaborative research and management of freshwater ecosystems, there is a need for greater understanding around cultural values and priorities. By using both scientific and Māori-value based wetland monitoring methods, Māori can articulate a range of values, goals and priorities to help inform environmental decision makers and empower iwi and hapū to have a meaningful and sustainable role in the management of wetlands.  There needs to be a foundation of mutual understanding and relationships built between environmental governing bodies and Māori for the future success of collaborative research and management of New Zealand's wetlands.

text: When Two Worlds Collide: Mātauranga Māori, Science and Health of the Toreparu Wetland Much of our understanding of wetland health and function comes from scientific-based monitoring and methodologies. However, there is a wealth of knowledge to be gained from Māori-value based assessment methods for monitoring wetlands in New Zealand. I used the Wetland Cultural Health Index (WCHI) and a variety of scientific wetland survey methods to examine how these two approaches complement each other. For this research, I worked with the people from Mōtakotako marae at the Toreparu wetland (Waikato), developing a set of site specific cultural indicators. 
Comparative analysis revealed a range of similarities and differences between the WCHI indices and scientific parameters. We found that as Wetland Cultural Health Measure (WCHM) scores increased, there was also an increase in dissolved oxygen concentration, SQMCI-sb values, and total nitrogen concentrations. Cultural indices provided an overall indication of site health. It was apparent, however, that scores of contributing indicators could vary markedly at any one site. As such, high scores for some indicators (e.g., vegetation values) may obscure low values for other variables (e.g., water quality), providing an index that depicts site health as being of average condition. 
Capacity and resourcing issues were also highlighted as being an issue for Māori to be able to successfully carry out wetland monitoring, but also for staff in councils and other research and environmental governing bodies to build and maintain relationships with tangata whenua. Other challenges around site access provided a unique opportunity to develop and trial new WCHI assessment techniques. The use of video assessment to carry out WCHI monitoring was of varying success. Indicators that could be scored by visual assessment were useful, but indicators that relied on sound or felt sensation were difficult to assess. The use of mauri (life force) as an indicator had benefits when applied to the whole catchment, but the volunteer participants challenged its validity when used at the smaller site scale. Volunteers found assigning a numerical value to mauri very difficult, and felt that reducing mauri to a single number may diminish the significance of this holistic and metaphysical concept.  Mauri has been used successfully as a measure of environmental health but it is important to communicate and understand what mauri is and why it is measured.
Overall, the WCHI provided a wealth of information that could not be captured through scientific sampling, such as the presence of dye source, loss of bird/fish species and baseline information on the past condition of the Toreparu before the surrounding land was converted for agricultural use. This confirms that our understanding of wetland health is enhanced through the inclusion of cultural values.
As the New Zealand government and Māori move towards a future of collaborative research and management of freshwater ecosystems, there is a need for greater understanding around cultural values and priorities. By using both scientific and Māori-value based wetland monitoring methods, Māori can articulate a range of values, goals and priorities to help inform environmental decision makers and empower iwi and hapū to have a meaningful and sustainable role in the management of wetlands.  There needs to be a foundation of mutual understanding and relationships built between environmental governing bodies and Māori for the future success of collaborative research and management of New Zealand's wetlands.

year: 2014