title: New Zealand regions, 1986-2001: Incomes

authors: Pool, Ian

subjects: personal income

abstract: This paper investigates income trends in the Regions of New Zealand between 1986 and 2001. It also looks at additional factors of age and ethnicity which have a bearing on the results. Investigations of median, upper and lower quartiles and inter-quartile ranges of personal income calculated from census data showed increasing inequalities between the regions. The distribution of income around New Zealand is also investigated. Auckland and Wellington increasingly have higher incomes than the other regions.

text: New Zealand regions, 1986-2001: Incomes This paper investigates income trends in the Regions of New Zealand between 1986 and 2001. It also looks at additional factors of age and ethnicity which have a bearing on the results. Investigations of median, upper and lower quartiles and inter-quartile ranges of personal income calculated from census data showed increasing inequalities between the regions. The distribution of income around New Zealand is also investigated. Auckland and Wellington increasingly have higher incomes than the other regions.

year: 2005-11

title: Exotic weeds and fluctuating microclimate can constrain native plant regeneration in urban forest restoration

authors: Wallace, Kiri Joy

subjects: Science & Technology

abstract: Restoring forest structure and composition is an important component of urban land management, but we lack clear understanding of the mechanisms driving restoration success. Here we studied two indicators of restoration success in temperate rainforests: native tree regeneration and epiphyte colonization. We hypothesized that ecosystem properties such as forest canopy openness, abundance of exotic herbaceous weeds, and the microclimate directly affect the density and diversity of native tree seedlings and epiphytes. Relationships between environmental conditions and the plant community were investigated in 27 restored urban forests spanning 3–70 years in age and in unrestored and remnant urban forests. We used structural equation modelling to determine the direct and indirect drivers of native tree regeneration and epiphyte colonization in the restored forests. Compared to remnant forest, unrestored forest had fewer native canopy tree species, significantly more light reaching the forest floor annually, and higher exotic weed cover. Additionally, epiphyte density was lower and native tree regeneration density was marginally lower in the unrestored forests. In restored forests, light availability was reduced to levels found in remnant forests within 20 years of restoration planting, followed shortly thereafter by declines in herbaceous exotic weeds and reduced fluctuation of relative humidity and soil temperatures. Contrary to expectations, canopy openness was only an indirect driver of tree regeneration and epiphyte colonization, but it directly regulated weed cover and microclimatic fluctuations, both of which directly drove the density and richness of regeneration and epiphyte colonization. Epiphyte density and diversity were also positively related to forest basal area, as large trees provide physical habitat for colonization. These results imply that ecosystem properties change predictably after initial restoration plantings, and that reaching critical thresholds in some ecosystem properties makes conditions suitable for the regeneration of late successional species, which is vital for restoration success and long-term ecosystem sustainability. Abiotic and biotic conditions that promote tree regeneration and epiphyte colonization will likely be present in forests with a basal area ≥27 m²/ha. We recommend that urban forest restoration plantings be designed to promote rapid canopy closure to reduce light availability, suppress herbaceous weeds, and stabilize the microclimate.

text: Exotic weeds and fluctuating microclimate can constrain native plant regeneration in urban forest restoration Restoring forest structure and composition is an important component of urban land management, but we lack clear understanding of the mechanisms driving restoration success. Here we studied two indicators of restoration success in temperate rainforests: native tree regeneration and epiphyte colonization. We hypothesized that ecosystem properties such as forest canopy openness, abundance of exotic herbaceous weeds, and the microclimate directly affect the density and diversity of native tree seedlings and epiphytes. Relationships between environmental conditions and the plant community were investigated in 27 restored urban forests spanning 3–70 years in age and in unrestored and remnant urban forests. We used structural equation modelling to determine the direct and indirect drivers of native tree regeneration and epiphyte colonization in the restored forests. Compared to remnant forest, unrestored forest had fewer native canopy tree species, significantly more light reaching the forest floor annually, and higher exotic weed cover. Additionally, epiphyte density was lower and native tree regeneration density was marginally lower in the unrestored forests. In restored forests, light availability was reduced to levels found in remnant forests within 20 years of restoration planting, followed shortly thereafter by declines in herbaceous exotic weeds and reduced fluctuation of relative humidity and soil temperatures. Contrary to expectations, canopy openness was only an indirect driver of tree regeneration and epiphyte colonization, but it directly regulated weed cover and microclimatic fluctuations, both of which directly drove the density and richness of regeneration and epiphyte colonization. Epiphyte density and diversity were also positively related to forest basal area, as large trees provide physical habitat for colonization. These results imply that ecosystem properties change predictably after initial restoration plantings, and that reaching critical thresholds in some ecosystem properties makes conditions suitable for the regeneration of late successional species, which is vital for restoration success and long-term ecosystem sustainability. Abiotic and biotic conditions that promote tree regeneration and epiphyte colonization will likely be present in forests with a basal area ≥27 m²/ha. We recommend that urban forest restoration plantings be designed to promote rapid canopy closure to reduce light availability, suppress herbaceous weeds, and stabilize the microclimate.

year: 2017

title: Maori Flourishing in a Fast Changing World - Inaugural Professorial Address

authors: Nikora, Linda Waimarie

subjects: Indigenous psychology; Maori flourishing; social identity; social and emotional wellbeing

abstract: A strong sense of who one is and that one’s life matters is vital to health and wellbeing. Without meaning and belonging many people, families and communities lie open to the risk of mental illness, addiction, transience, criminality, suicide and so on. In a rapidly changing social and technological environment where being Maori is enacted in the face of a dominant Pakeha majority, and in an increasingly diverse Maori world, staying well is an important challenge that we cannot underestimate or take for granted. There are many unwellness forces upon Maori in this fast changing world. Some are obvious and readily felt, others not so easy to apprehend or explain. Surveying almost 30 years of research, Professor Nikora will examine some of these unwellness forces and responses Maori make within the broader quest to remain indigenous and to flourish.

text: Maori Flourishing in a Fast Changing World - Inaugural Professorial Address A strong sense of who one is and that one’s life matters is vital to health and wellbeing. Without meaning and belonging many people, families and communities lie open to the risk of mental illness, addiction, transience, criminality, suicide and so on. In a rapidly changing social and technological environment where being Maori is enacted in the face of a dominant Pakeha majority, and in an increasingly diverse Maori world, staying well is an important challenge that we cannot underestimate or take for granted. There are many unwellness forces upon Maori in this fast changing world. Some are obvious and readily felt, others not so easy to apprehend or explain. Surveying almost 30 years of research, Professor Nikora will examine some of these unwellness forces and responses Maori make within the broader quest to remain indigenous and to flourish.

year: 2015-11-17