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August 30, 2024
Resources related to
Nitrogen
Kseniya Kopna, Pexels
Nitrogen can help plants grow, but too much pollutes our rivers, lakes and groundwater. These resources can improve your understanding of how nitrogen flows through our environment, the drivers for regulation, and help you reduce nitrate leaching.
Showing 1 - 12 of 104 results
Technical Report
Climate change impacts on land use suitability
This report aims to assist land managers and natural resource planners to assess the resilience of agricultural land uses across New Zealand and to inform…
Presentation
Nitrogen Attenuation via Benign Denitrification
Our Land and Water Symposium, August 2019
Journal Article
Comparison of four learning-based methods for predicting groundwater redox status
Knowing the location where groundwater denitrification occurs, or by proxy the groundwater redox status (oxic, mixed, and anoxic), is valuable information for assessing and managing…
Journal Article
Water quality issues facing dairy farming: potential natural and built attenuation of nitrate losses in sensitive agricultural catchments
We developed a conceptual catchment-scale modelling analysis assessing potential natural and built attenuation of nitrate losses from dairy farming in the Tararua and Rangitikei catchments…
Journal Article
Development of a national-scale framework to characterise transfers of N, P and Escherichia coli from land to water
A hydrological framework encompassing nitrogen (N), phosphorus (P) and microbial (E. coli) transfer from land to water was developed to provide a consistent and rapid…
Journal Article
Global mapping of freshwater nutrient enrichment and periphyton growth potential
Periphyton (algal) growth in many freshwater systems is associated with severe eutrophication that can impair productive and recreational use of water by billions of people.…
Method
Achieving unbiased predictions of national-scale groundwater redox conditions via data oversampling and statistical learning
An important policy consideration for integrated land and water management is to understand the spatial distribution of nitrate attenuation in the groundwater system, for which…
Journal Article
Eutrophication and climate change impacts of a case study of NZ beef to the European market
Beef production in the Lake Taupō region of New Zealand is regulated for nitrogen (N) leaching. The objectives of this study were to 1) evaluate…
Journal Article
Farm-scale carbon and nitrogen fluxes in pastoral dairy production systems using different nitrogen fertilizer regimes
The nitrogen (N) fertilizer application rate (kg ha/1 year) in pastoral dairy systems affects the flow of N through the soil, plant and animal pools…
Journal Article
Nitrogen loads to New Zealand aquatic receiving environments: Comparison with regulatory criteria
There is concern about the deteriorating nutrient status of aquatic receiving environments in New Zealand. We estimated the amount by which current nitrogen (N) concentrations…
Summary
Assessing the Effectiveness of On-Farm Mitigation Actions
This research summary describes how effective on-farm mitigations have been so far, by comparing losses of nitrogen (N), phosphorus (P) and sediment in 1995 and…
Summary
Revealing Groundwater’s Denitrification Capacity
A new way to measure denitrification in groundwater has been proved, and could make analysing groundwater’s denitrification capacity more accessible for regional councils and farmers.…