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Mitigation

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There are more than 40 known and developing mitigation actions that go beyond industry good practice to reduce contaminants entering our waterways. These resources can help you identify and target appropriate mitigations, and discover new research on possible outcomes when they are applied.

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Showing 1 - 12 of 68 results
Journal Article

Balancing water-quality threats from nutrients and production in Australian and NZ dairy farms under low profit margins

We summarise the losses of N and P from Australasian dairy farms, examine the policy drivers used for mitigating losses and evaluate the effectiveness of…
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Journal Article

Temperature and Nitrogen Effects on Phosphorus Uptake by Agricultural Stream-Bed Sediments

Climate change will likely increase the growing season, temperatures, and ratio of nitrogen (N) to phosphorus (P) loss from land to water. However, it is…
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Journal Article

Assessing the Yield and Load of Contaminants with Stream Order: Would Policy Requiring Livestock to Be Fenced Out of High-Order Streams Decrease Catchment Contaminant Loads?

This paper won the JEQ Best Paper Award 2019. Concentration and flow data for 1998 to 2009 were used to calculate catchment load and yields…
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Technical Report

Evaluation of geospatial datasets and recognition of landscape gradients specific to water quality

This study evaluates the landscape relationships and suitability of existing geospatial datasets for the purposes of mapping physiographic water quality units for the Northland region.…
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Technical Report

Advice for application of the physiographic method to the West Coast Region

Land and Water Science Ltd. was contracted to provide services to West Coast Regional Council through an Envirolink Small Advice Grant. The aim of the…
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Technical Report

Evaluation of the physiographic method for the Tasman Region

The work undertaken in this project provides Tasman District Council with a foundation for which the physiographic approach can be applied within the region. The…
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Technical Report

Application of Physiographic Science to the Northland Region: Preliminary Hydrological and Redox Process-Attribute Layers

Water quality outcomes can vary spatially across the landscape, even when there are similar land use pressures. These differences are often the result of natural…
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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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Journal Article

Managing diffuse phosphorus at the source versus at the sink

Judicious phosphorus (P) management is a global grand challenge and critical to achieving water quality objectives while maintaining food production. The management of point sources…
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Method

A strategy for optimizing catchment management actions to stressor–response relationships in freshwaters

Defining a receiving environment,-value-contaminant system and determining a specific stressor–response relationship for that system provide valuable decision support strategy to optimize management actions toward a…
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Presentation

Mitigating the impacts of dairy farming on water quality – what have we achieved?

NZ Society of Soil Science, December 2018
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Journal Article

Why are median phosphorus concentrations improving in New Zealand streams and rivers?

Between 2004 and 2013 phosphorus concentrations decreased at 65% of the 304 sites monitored. Our research found the most probable causes of improvement were that…
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