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August 30, 2024
Resources related to
Measuring Water Quality
Andriy Medvediuk - 123RF
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.
Showing 1 - 12 of 131 results
Journal Article
Contrasting subsurface denitrification characteristics under temperate pasture lands and its implications for nutrient management in agricultural catchments
Subsurface denitrification plays a key role in the reduction or ‘attenuation’ of nitrate contamination of groundwater and surface waters. We investigated subsurface denitrification characteristics at…
Summary
Quantifying Excess Nitrogen Loads in Fresh Water
At least 43% of New Zealand’s agricultural land (31% of New Zealand’s total land area) is in catchments that are under pressure (‘pressure’ meaning the…
Video
What the data tells us about our water
By bringing together multiple data sources, we can now see which catchments are under the most pressure, and whether applying all known and emerging on-farm…
Journal Article
Quantifying contaminant losses to water from pastoral landuses in New Zealand II. The effects of some farm mitigation actions over the past two decades
In New Zealand the primary sector together with central and local government agencies have been promoting measures to mitigate the adverse effect of farming practices…
Journal Article
Evidence for the leaching of dissolved organic phosphorus to depth
Phosphorus (P) can leach from topsoil in inorganic and organic forms. While some evidence has shown inorganic P (orthophosphate) can leach to depth in some…
Journal Article
Sediment phosphorus buffering in streams at baseflow: A meta-analysis
Phosphorus (P) pollution of surface waters remains a challenge for protecting and improving water quality. Central to the challenge is understanding what regulates P concentrations…
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…
Infographic
Stressor-Response Framework
Illustrating the relationship between land use, stressor type, stressor level and impacts
Journal Article
Estimating and modelling the risk of redox-sensitive phosphorus loss from saturated soils using different soil tests
Phosphorus (P) loss from agricultural soils can negatively affect water quality. Models and management to decrease losses increasingly focus on P that is available and…
Method
Refinement of the Framework for Assessment of Recreational Water Quality
Regional and city council staff now have a documented process to follow when faecal contamination is identified in freshwater, created by ESR researchers involved in…
Technical Report
Faecal source tracking and the identification of naturalised Escherichia coli to assist with establishing water quality and faecal contamination levels
E. coli are routinely measured as faecal indicator bacteria (FIB) to provide indications of microbial water quality in parallel with other physico-chemical parameters. Recent evidence…
Technical Report
Faecal source tracking to understand the role of introduced predators and avian species on water quality assessments in the Makiriri Reserve, Dannevirke
Escherichia coli are used as indicators of faecal contamination in water quality assessments, but ‘naturalised’ non-faecal E. coli and non-pathogenic E. coli-like bacteria can confound…