title: Sources and effects of catchment-derived bioavailable contaminants in Hamilton urban streams

authors: Valler, Tammy L.

subjects: Urban streams

abstract: Awareness of the consistently degraded state of urban streams, with lower biodiversity has heightened worldwide, increasing restoration initiatives to ameliorate the adverse effects. The present study examined anthropogenically-derived contaminants in water and sediments and bioaccumulation in tissues and bile of shortfin eels (Anguilla australis) in Hamilton City urban gully streams. Bioassays were also conducted with two native Crustacea; the amphipod Paracorophium lucasi and freshwater crayfish (kōura) (Paranephrops planifrons) to test endpoints of survival, reburial behaviour and growth. Results of dissolved Cu, Pb and Zn showed the industrial Waitawhiriwhiri catchment, with higher impervious surfaces, to have the greatest potential for generating contaminants in stream waters. Relationships between sediment contaminant concentrations and upstream % impervious area suggest an association with stormwater runoff and metal accumulation. Shortfin eels from Gibbons Creek and Lake Rotoroa bioaccumulated high concentrations of Pb and As respectively in livers, and PAH metabolite pyrene-1-glucuronide in bile was found in many eels, highlighting the bioavailability of these contaminants. Muscle tissues cocnentrations of Pb and Hg in some sites triggered food safety guidelines presenting a low risk for human consumption. Amphipods exposed to sediments from Lake Rotoroa had significantly reduced survival compared with those exposed to other site sediments in a 10-day sediment toxicity test. Photo-induced toxicity is not of concern for biota exposed to these sediments. Sediments did not induce any sub-lethal effect on reburial behaviour. Growth rates of kōura fed Salix fragilis leaf material incubated in Hamilton streams were not significantly different, and the short duration of the study meant conclusions could not be made on the significance of observed accumulated metals and metalloids on differences in growth rates. Results of this study highlight a number of locations in the Hamilton stream network, where contaminants are of concern, especially in streams with fully urbanised catchments with high effective imperviousness and legacies of past land use or pollution. Bioavailability of some metals, metalloids and PAHs is constraining the diversity of some species present in these streams, although not apparent for shortfin eels, as they are very common.

text: Sources and effects of catchment-derived bioavailable contaminants in Hamilton urban streams Awareness of the consistently degraded state of urban streams, with lower biodiversity has heightened worldwide, increasing restoration initiatives to ameliorate the adverse effects. The present study examined anthropogenically-derived contaminants in water and sediments and bioaccumulation in tissues and bile of shortfin eels (Anguilla australis) in Hamilton City urban gully streams. Bioassays were also conducted with two native Crustacea; the amphipod Paracorophium lucasi and freshwater crayfish (kōura) (Paranephrops planifrons) to test endpoints of survival, reburial behaviour and growth. Results of dissolved Cu, Pb and Zn showed the industrial Waitawhiriwhiri catchment, with higher impervious surfaces, to have the greatest potential for generating contaminants in stream waters. Relationships between sediment contaminant concentrations and upstream % impervious area suggest an association with stormwater runoff and metal accumulation. Shortfin eels from Gibbons Creek and Lake Rotoroa bioaccumulated high concentrations of Pb and As respectively in livers, and PAH metabolite pyrene-1-glucuronide in bile was found in many eels, highlighting the bioavailability of these contaminants. Muscle tissues cocnentrations of Pb and Hg in some sites triggered food safety guidelines presenting a low risk for human consumption. Amphipods exposed to sediments from Lake Rotoroa had significantly reduced survival compared with those exposed to other site sediments in a 10-day sediment toxicity test. Photo-induced toxicity is not of concern for biota exposed to these sediments. Sediments did not induce any sub-lethal effect on reburial behaviour. Growth rates of kōura fed Salix fragilis leaf material incubated in Hamilton streams were not significantly different, and the short duration of the study meant conclusions could not be made on the significance of observed accumulated metals and metalloids on differences in growth rates. Results of this study highlight a number of locations in the Hamilton stream network, where contaminants are of concern, especially in streams with fully urbanised catchments with high effective imperviousness and legacies of past land use or pollution. Bioavailability of some metals, metalloids and PAHs is constraining the diversity of some species present in these streams, although not apparent for shortfin eels, as they are very common.

year: 2013

title: Facilitating and integrating learning within sport studies cooperative education: Exploring the pedagogies employed by students, academics and workplace supervisors

authors: Martin, Andrew

subjects: work integrated learning

abstract: Using an interpretative case study methodology, the pedagogical approaches used to facilitate and integrate student learning in cooperative education programmes in sport studies were investigated. This research drew from two New Zealand university cohorts and involved six focus group interviews. Findings suggested there were limited direct explicit attempts to integrate on- and off-campus learning. Integration was implicitly or indirectly fostered, principally by reflection through assessments (e.g., journals, reports), and primarily consisted of reflection-on-action (Schön, 1991) after the learning activities. Significantly, the integration of learning also consisted of reflection on personal growth, rather than critical reflection on theory or organisational practice.

text: Facilitating and integrating learning within sport studies cooperative education: Exploring the pedagogies employed by students, academics and workplace supervisors Using an interpretative case study methodology, the pedagogical approaches used to facilitate and integrate student learning in cooperative education programmes in sport studies were investigated. This research drew from two New Zealand university cohorts and involved six focus group interviews. Findings suggested there were limited direct explicit attempts to integrate on- and off-campus learning. Integration was implicitly or indirectly fostered, principally by reflection through assessments (e.g., journals, reports), and primarily consisted of reflection-on-action (Schön, 1991) after the learning activities. Significantly, the integration of learning also consisted of reflection on personal growth, rather than critical reflection on theory or organisational practice.

year: 2010

title: Reclaiming Kaitiakitanga : An intergenerational perspective of Kaitiakitanga within Te Parawhau

authors: Walker, Erana

subjects: Kaitiakitanga

abstract: Kaitiakitanga is a concept that is utilised widely throughout the Māori world for the protection and preservation of cultural aspects to Māori. Through years of application by westernised mainstream processes the value has largely been restricted to the realms of environmental protection. This restriction has often been the result of misinterpretation of Kaitiakitanga and its relevance as a concept to Māori. The purpose of the thesis is to question how the perspective of Kaitiakitanga is constructed in the minds of representatives from the hapū of Te Parawhau. To test for variance, the research spans across two generations of hapū members. Using Whakawhiti Kōrero for data collection as well as Kaupapa Māori methodology as guidance, the thesis explores perspectives of two generations of Te Parawhau descendants around Kaitiakitanga and how it can be developed to aid in the growth and prosperity of the hapū. Key themes highlighted by the analysis encompass ideas of connectedness as well as spiritual, physical, environmental and human elements of responsibility and obligation. The thesis introduces a distinct Te Parawhau analytical framework for its analysis of rich kōrero by hapū members in relation to Kaitiakitanga. Through this framework the value of Kaitiakitanga is tested for relevance to Te Parawhau and its future development. The world view of Te Parawhau has formed the basis of participant perspectives around Kaitiakitanga and leads the researcher to consider that such knowledge is important to the future functionality of Māori value’s. The thesis concludes to show that there are indeed differences in application and perspectives of Kaitiakitanga within the hapū of Te Parawhau.

text: Reclaiming Kaitiakitanga : An intergenerational perspective of Kaitiakitanga within Te Parawhau Kaitiakitanga is a concept that is utilised widely throughout the Māori world for the protection and preservation of cultural aspects to Māori. Through years of application by westernised mainstream processes the value has largely been restricted to the realms of environmental protection. This restriction has often been the result of misinterpretation of Kaitiakitanga and its relevance as a concept to Māori. The purpose of the thesis is to question how the perspective of Kaitiakitanga is constructed in the minds of representatives from the hapū of Te Parawhau. To test for variance, the research spans across two generations of hapū members. Using Whakawhiti Kōrero for data collection as well as Kaupapa Māori methodology as guidance, the thesis explores perspectives of two generations of Te Parawhau descendants around Kaitiakitanga and how it can be developed to aid in the growth and prosperity of the hapū. Key themes highlighted by the analysis encompass ideas of connectedness as well as spiritual, physical, environmental and human elements of responsibility and obligation. The thesis introduces a distinct Te Parawhau analytical framework for its analysis of rich kōrero by hapū members in relation to Kaitiakitanga. Through this framework the value of Kaitiakitanga is tested for relevance to Te Parawhau and its future development. The world view of Te Parawhau has formed the basis of participant perspectives around Kaitiakitanga and leads the researcher to consider that such knowledge is important to the future functionality of Māori value’s. The thesis concludes to show that there are indeed differences in application and perspectives of Kaitiakitanga within the hapū of Te Parawhau.

year: 2016