Our Land and Water

Toitū te Whenua, Toiora te Wai

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Our Land and Water has now ended.
Our mission was to preserve the most fundamental treasures of Aotearoa – its land and water – while producing value from those same treasures.

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Technical Report

Barriers to Environmental Change

Farming in New Zealand is changing. The environmental impacts of farming are presenting more interlinked challenges. The pressure is on farmers to shift from the…
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Presentation

Benign denitrification in shallow groundwaters

Land Use and Water Quality Agriculture and the Environment, Denmark, June 2019
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Technical Report

Determining the greenhouse gas reduction potential of regenerative agricultural practices

New Zealand's greenhouse gas emissions are heavily influenced by agricultural activities, which account for 48% of total emissions. Most of these emissions come from methane…
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Technical Report

Measuring the benefits of management actions: Mitigation effectiveness monitoring design (proof of concept phase)

A five-step process was developed to answer the key question asked of Working Group 1:'Have the mitigation actions resulted in improved freshwater outcomes?'. To assist…
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Summary

Kōura at Taipōrutu, Te Māhia-Mai-Tawhiti

Kōura is an endangered freshwater species that is experiencing an increased national profile. Te Māhia Peninsula landholder Mere Whaanga, with the help of fellow resident…
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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

Shifting from land-use capability to land-use suitability

The LUS classification system will be based on concatenation of three categories: land-use potential, contribution to catchment contaminant delivery, and pressure in receiving environments (Fig.…
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Technical Report

Science for Policy: The role of science in the National Policy Statement for Freshwater Management

This report takes a rare ‘behind the scenes' look at how environmental policy is developed in Aotearoa New Zealand. The report includes comments from confidential…
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The Duke of Edinburgh (third from left) observes border dyke irrigation at the Winchmore Research Station Irrigation Scheme. In a border dyke irrigation system, when water is diverted from the main water races into smaller ones, a temporary dam must be created at the outlet to each border, so the water spills through onto pasture. In this image the outlet behind the worker in the water has been closed with a board, the pasture on the right of it has been flattened by the previous flow of water. The worker is lifting a corner of the canvas dam to allow water to flow down to the next temporary dam.

Linking Legacies to Wai

Accounting for lag times and natural concentrations of contaminants in groundwater
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