title: Sustainable citizenship as a key to sustainability: Establishing a common ground on technology use in New Zealand's dairy sector

authors: Mueller, Hannah

subjects: sustainability

abstract: Sustainability is a key issue in New Zealand’s dairy industry. Arguments are often made from either a purely economic or environmental perspective. The debate is dominated by polarised viewpoints characterised by hasty rejection or assertive support of production-focused biotechnological approaches. On the one hand is the biotechnology industry and on the other environmentalists and an anxious public. In the context of this divisive discussion, progress towards sustainable development is hard to achieve. By using the concept of sustainable citizenship as a theoretical framework, it is possible to incorporate economic, environmental, political and social approaches to sustainability. This thesis employs sustainable citizenship in order to find a common ground amongst the various points of view within the dairy sector. Shared values around farming methods and biotechnology are used to find a way to facilitate sustainable development in the industry, combining current interests of various stakeholders with the long-term interest of future generations.

text: Sustainable citizenship as a key to sustainability: Establishing a common ground on technology use in New Zealand's dairy sector Sustainability is a key issue in New Zealand’s dairy industry. Arguments are often made from either a purely economic or environmental perspective. The debate is dominated by polarised viewpoints characterised by hasty rejection or assertive support of production-focused biotechnological approaches. On the one hand is the biotechnology industry and on the other environmentalists and an anxious public. In the context of this divisive discussion, progress towards sustainable development is hard to achieve. By using the concept of sustainable citizenship as a theoretical framework, it is possible to incorporate economic, environmental, political and social approaches to sustainability. This thesis employs sustainable citizenship in order to find a common ground amongst the various points of view within the dairy sector. Shared values around farming methods and biotechnology are used to find a way to facilitate sustainable development in the industry, combining current interests of various stakeholders with the long-term interest of future generations.

year: 2011

title: Flow-induced morphological variations affect diffusion boundary-layer thickness of Macrocystis pyrifera (heterokontophyta, laminariales)

authors: Hurd, Catriona L.

subjects: blade morphology

abstract: In slow mainstream flows (<4–6 cm • s⁻¹), the transport of dissolved nutrients to seaweed blade surfaces is reduced due to the formation of thicker diffusion boundary layers (DBLs). The blade morphology of Macrocystis pyrifera (L.) C. Agardh varies with the hydrodynamic environment in which it grows; wave-exposed blades are narrow and thick with small surface corrugations (1 mm tall), whereas wave-sheltered blades are wider and thinner with large (2–5 cm) edge undulations. Within the surface corrugations of wave-exposed blades, the DBL thickness, measured using an O₂ micro-optode, ranged from 0.67 to 0.80 mm and did not vary with mainstream velocities between 0.8 and 4.5 cm • s⁻¹. At the corrugation apex, DBL thickness decreased with increasing seawater velocity, from 0.4 mm at 0.8 cm • s⁻¹ to being undetectable at 4.5 cm • s⁻¹. Results show how the wave-exposed blades trap fluid within the corrugations at their surface. For wave-sheltered blades at 0.8 cm • s⁻¹, a DBL thickness of 0.73 ± 0.31 mm within the edge undulation was 10-fold greater than at the undulation apex, while at 2.1 cm • s⁻¹, DBL thicknesses were similar at <0.07 mm. Relative turbulence intensity was measured using an acoustic Doppler velocimeter (ADV), and overall, there was little evidence to support our hypothesis that the edge undulations of wave-sheltered blades increased turbulence intensity compared to wave-exposed blades. We discuss the positive and negative effects of thick DBLs at seaweed surfaces.

text: Flow-induced morphological variations affect diffusion boundary-layer thickness of Macrocystis pyrifera (heterokontophyta, laminariales) In slow mainstream flows (<4–6 cm • s⁻¹), the transport of dissolved nutrients to seaweed blade surfaces is reduced due to the formation of thicker diffusion boundary layers (DBLs). The blade morphology of Macrocystis pyrifera (L.) C. Agardh varies with the hydrodynamic environment in which it grows; wave-exposed blades are narrow and thick with small surface corrugations (1 mm tall), whereas wave-sheltered blades are wider and thinner with large (2–5 cm) edge undulations. Within the surface corrugations of wave-exposed blades, the DBL thickness, measured using an O₂ micro-optode, ranged from 0.67 to 0.80 mm and did not vary with mainstream velocities between 0.8 and 4.5 cm • s⁻¹. At the corrugation apex, DBL thickness decreased with increasing seawater velocity, from 0.4 mm at 0.8 cm • s⁻¹ to being undetectable at 4.5 cm • s⁻¹. Results show how the wave-exposed blades trap fluid within the corrugations at their surface. For wave-sheltered blades at 0.8 cm • s⁻¹, a DBL thickness of 0.73 ± 0.31 mm within the edge undulation was 10-fold greater than at the undulation apex, while at 2.1 cm • s⁻¹, DBL thicknesses were similar at <0.07 mm. Relative turbulence intensity was measured using an acoustic Doppler velocimeter (ADV), and overall, there was little evidence to support our hypothesis that the edge undulations of wave-sheltered blades increased turbulence intensity compared to wave-exposed blades. We discuss the positive and negative effects of thick DBLs at seaweed surfaces.

year: 2011

title: A Mātauranga Māori Perspective of Literacy for Adult Learners

authors: Furness, Jane Amanda

abstract: Globally, literacy can be conceived of in different ways. Two perspectives that have influenced adult literacy policy internationally are the economic functionalist and the sociocultural. In Aotearoa New Zealand, Māori educators have repeatedly advanced a mātauranga Māori perspective of literacy. This perspective has parallels with the embodied, practice-based multiliteracies and sociomateriality of the sociocultural perspective but less so with the dominant functionalist perspective. To address how Māori views have been side-lined in adult literacy policy development, we seek to clarify this view and foreground Māori-led policy recommendations that date back to the creation of the New Zealand Adult Literacy Strategy in 2001. We also highlight the relevance of this perspective by sharing the success and effectiveness of Māori-led adult literacy programmes. In doing so, we demonstrate the need for a biliteracy approach to adult literacy policy to reflect our bicultural nation and ensure Māori aspirations for literacy are met.

text: A Mātauranga Māori Perspective of Literacy for Adult Learners Globally, literacy can be conceived of in different ways. Two perspectives that have influenced adult literacy policy internationally are the economic functionalist and the sociocultural. In Aotearoa New Zealand, Māori educators have repeatedly advanced a mātauranga Māori perspective of literacy. This perspective has parallels with the embodied, practice-based multiliteracies and sociomateriality of the sociocultural perspective but less so with the dominant functionalist perspective. To address how Māori views have been side-lined in adult literacy policy development, we seek to clarify this view and foreground Māori-led policy recommendations that date back to the creation of the New Zealand Adult Literacy Strategy in 2001. We also highlight the relevance of this perspective by sharing the success and effectiveness of Māori-led adult literacy programmes. In doing so, we demonstrate the need for a biliteracy approach to adult literacy policy to reflect our bicultural nation and ensure Māori aspirations for literacy are met.

year: 2023-10-23