View Our Strategy Document 2019 – 2024
May 02, 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 183 results
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.…
Technical Report
Measurement of neon in groundwaters – analysis and validation
Nitrate is the most pervasive contaminant in New Zealand’s groundwaters. Thus, understanding and managing nitrogen loads through New Zealand’s aquifers is vital for maintaining the…
Technical Report
Measuring actual denitrification to understand nitrogen loads through aquifers
Ne is an inert, soluble, gas which is present in air and has been used in international studies to understand recharge conditions. The aim of…
Technical Report
Efficacy of subsurface denitrification to attenuate nitrate in shallow groundwaters
Our preliminary results indicate occurrence of complete ‘benign’ denitrification in the reducing shallow groundwater sites with lower dissolved oxygen (DO) contents (DO < 1mg L-1),…
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…
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…
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…
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…
Model
Model of Nitrogen and Phosphorus in Freshwater Eutrophication for Life Cycle Impact Assessment
Fate Factors (FFs) for use in life-cycle analysis (PCA) were developed for both dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP), distinguishing emissions from…
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…
Technical Report
Measurement of neon in groundwaters for quantification of denitrification in aquifers
Nitrate is the most pervasive contaminant in New Zealand’s groundwaters. Thus, understanding and managing nitrogen loads through New Zealand’s aquifers is vital for maintaining the…
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…