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Measuring Water Quality

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How will we know if the actions people all over Aotearoa are taking to improve the health of our freshwater are working? Our research is striving to fill data gaps and build knowledge about how to measure and model water quality.

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Guidance

Towards a Physiographic Map: Information for Regional Councils

Physiographic Environments of New Zealand research is developing a cost-effective technique to measure and map (as an integrated physiographic layer) how features of the natural…
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Summary

Nitrogen and phosphorus modelled in freshwater eutrophication: The director’s cut

Most Life Cycle Impact Assessment (LCIA) methods to date estimate freshwater eutrophication impacts from phosphorus (P) only. There is a need to account for the…
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Journal Article

Variability of Escherichia coli Concentrations in Rivers during Base-Flow Conditions in NZ

We compared the variability of E. coli concentrations in baseflow of 3 different-sized rivers in both summer and winter at the time scales of minutes,…
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Journal Article

An event-based model of soil erosion and sediment transport at the catchment scale

Soil conservation over large areas is expensive and needs to be targeted to obtain maximum benefit for the least cost. In this paper, an event-based…
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Journal Article

Stressor-response relationships and the prospective management of aquatic ecosystems

We set out a framework for interpreting S-R relationships in terms of functional forms, trajectories, thresholds and slopes. These characteristics convey information about resistance to…
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Journal Article

Indirect Methods to Elucidate Water Flows and Contaminant Transfer Pathways through Meso-scale Catchments – a Review

We provide a critical review of indirect methods to elucidate water flows and contaminant transfer pathways through meso-scale catchments, as the proliferation of such methods…
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Presentation

Molecular Approaches to Identify Benign Denitrification in Shallow Groundwaters

We measured lower dissolved N2O and higher denitrifier genes abundance in the groundwater samples collected from reducing (anoxic) groundwaters sites, as compared with the groundwater…
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Technical Report

Application of Eutrophication Potential Indicators in a Case Study Catchment in NZ

The objective of this work was to determine the effects and implications of Eutrophication Potential indicators in the lifecycle assessment of livestock farm systems using…
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Presentation

Dissolved gases as indicator of denitrification in shallow groundwaters in agricultural landscape

NZ Soil Science Society Conference, December 2018
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Presentation

Adaptation of water eutrophication indicators for EU environmental footprinting of NZ products

To address impacts on freshwater eutrophication, it is paramount that both N and P are accounted for. The current recommendation from the EC for Product…
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Presentation

Land-use effects on aquatic ecosystems – strengthening the evidence base

NZ Freshwater Sciences Conference, December 2018
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Presentation

Recent advances in reporting and interpreting water quality trends

NZ Freshwater Sciences Conference, December 2018
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