title: Urban water metabolism information for planning water sensitive city-regions

authors: Serrao-Neumann, Silvia

subjects: Science & Technology

abstract: Climate change and growing populations will stretch water resources in many city-regions globally, and urbanisation will continue to degrade water quality and upset natural hydrological flows. These pressures call for alternative urban water management approaches with improved connection with land use planning. Evaluating the water metabolism of urban areas gives a holistic picture of how water flows through and is transformed by urban settlements, to inform land use planning for sustainably managing urban water. Previous research has conceptualised how metabolism science may inform urban land use planning. In this work, we build on to identify how urban water metabolism evaluations can inform urban planning practice. We ask, ‘how can urban water metabolism evaluations support urban and water planning towards water sensitive city-regions?’ Focusing on three Australian capital city-regions, we empirically identify the knowledge needs of practitioners and compare this against the knowledge known to be generated from past urban water metabolism evaluations. This was done within a framework of urban water resource management objectives for water sensitive cities - that is, protection of water resources and hydrological flows, recognition of the diverse functions of water, and resource efficiency and supply internalisation. Based on the findings, the paper discusses five key strategic initiatives for planning for water sensitive city-regions: resource efficiency and hydrological performance benchmarks and targets for urban developments, tailoring programmes for resource efficiency, making case for regional blue-green space networks for improved hydrological performance, small and large-scale infrastructure innovation, and social and institutional innovation in urban water management.

text: Urban water metabolism information for planning water sensitive city-regions Climate change and growing populations will stretch water resources in many city-regions globally, and urbanisation will continue to degrade water quality and upset natural hydrological flows. These pressures call for alternative urban water management approaches with improved connection with land use planning. Evaluating the water metabolism of urban areas gives a holistic picture of how water flows through and is transformed by urban settlements, to inform land use planning for sustainably managing urban water. Previous research has conceptualised how metabolism science may inform urban land use planning. In this work, we build on to identify how urban water metabolism evaluations can inform urban planning practice. We ask, ‘how can urban water metabolism evaluations support urban and water planning towards water sensitive city-regions?’ Focusing on three Australian capital city-regions, we empirically identify the knowledge needs of practitioners and compare this against the knowledge known to be generated from past urban water metabolism evaluations. This was done within a framework of urban water resource management objectives for water sensitive cities - that is, protection of water resources and hydrological flows, recognition of the diverse functions of water, and resource efficiency and supply internalisation. Based on the findings, the paper discusses five key strategic initiatives for planning for water sensitive city-regions: resource efficiency and hydrological performance benchmarks and targets for urban developments, tailoring programmes for resource efficiency, making case for regional blue-green space networks for improved hydrological performance, small and large-scale infrastructure innovation, and social and institutional innovation in urban water management.

year: 2019

title: An ecological study of Chinese privet (Ligustrum sinense Lour.) in the Waikato Region

authors: Grove, E.

subjects: New Zealand

abstract: Chinese privet (Ligustrum sinense) has naturalised across the Waikato region invading lowland native forest and wetland habitat. This shrub has the ability to form a dense canopy or subcanopy and appears to exclude other native species from establishing in the understorey. Chinese privet seedlings were found in abundance underneath privet canopy, where they grow slower than when invading a new site yet are able to succeed adult plants and continually occupy a site. Chinese privet seedlings establish readily under intact native canopy but are more prolific in disturbed high light environments. Fruit is produced in abundance and is dispersed by birds particularly beneath perch sites, which limits seed dispersal over open ground. Chinese privet seedlings appear to be palatable to stock, but rapidly out-compete and dominate regenerating native species when grazing pressure is removed. A short-lived seedbank, six months to one year viability, suggests that the removal of adult plants will quickly reduce the number of seedlings establishing. This invasive shrub is a serious weed in south-eastern USA where it is well established and would appear to have similar potential in New Zealand to form vast, dense thickets with very low floristic diversity.

text: An ecological study of Chinese privet (Ligustrum sinense Lour.) in the Waikato Region Chinese privet (Ligustrum sinense) has naturalised across the Waikato region invading lowland native forest and wetland habitat. This shrub has the ability to form a dense canopy or subcanopy and appears to exclude other native species from establishing in the understorey. Chinese privet seedlings were found in abundance underneath privet canopy, where they grow slower than when invading a new site yet are able to succeed adult plants and continually occupy a site. Chinese privet seedlings establish readily under intact native canopy but are more prolific in disturbed high light environments. Fruit is produced in abundance and is dispersed by birds particularly beneath perch sites, which limits seed dispersal over open ground. Chinese privet seedlings appear to be palatable to stock, but rapidly out-compete and dominate regenerating native species when grazing pressure is removed. A short-lived seedbank, six months to one year viability, suggests that the removal of adult plants will quickly reduce the number of seedlings establishing. This invasive shrub is a serious weed in south-eastern USA where it is well established and would appear to have similar potential in New Zealand to form vast, dense thickets with very low floristic diversity.

year: 2005

title: Development and care of pā harakeke in 19th century New Zealand: Voices from the past

authors: McAllum, Priscilla M

subjects: Raranga

abstract: Māori weaving is experiencing a resurgence. Some weavers are involved in the planting of pā harakeke so that they have a high quality resource on hand ready for use.  A number of recent scientific publications, undertaken jointly with weavers, have explored the unique fibre qualities of different harakeke varieties along with specific aspects of Māori use of these varieties. In this paper, I examine Māori planting practices of pā harakeke and other aspects of resource management as revealed in literature sources from the late 18th to the early 20th centuries.  Although some of the practices outlined here may have fallen into disuse over time, they may, nevertheless, continue to be appropriate for contemporary pā harakeke. It is hoped, therefore, that the information provided here will be of interest to contemporary weavers.

text: Development and care of pā harakeke in 19th century New Zealand: Voices from the past Māori weaving is experiencing a resurgence. Some weavers are involved in the planting of pā harakeke so that they have a high quality resource on hand ready for use.  A number of recent scientific publications, undertaken jointly with weavers, have explored the unique fibre qualities of different harakeke varieties along with specific aspects of Māori use of these varieties. In this paper, I examine Māori planting practices of pā harakeke and other aspects of resource management as revealed in literature sources from the late 18th to the early 20th centuries.  Although some of the practices outlined here may have fallen into disuse over time, they may, nevertheless, continue to be appropriate for contemporary pā harakeke. It is hoped, therefore, that the information provided here will be of interest to contemporary weavers.

year: 2005-02