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August 30, 2024
Resources related to
Sediment
Geoff Reid
Sediment is a natural part of our rivers, but too much sediment disrupts ecosystems and harms plants and fish. These resources can help you identify sources of sediment, understand how sediment moves through the landscape, and prevent soil loss.
Showing 1 - 12 of 131 results
Journal Article
Quantifying contaminant losses to water from pastoral land uses in NZ I: Development of a spatial framework for assessing losses at a farm scale
Assessing the effectiveness of mitigation measures for reducing contaminant losses to water from pastoral farming systems is a challenging task. Two important factors that contribute…
Model
Impacts of grazing on ground cover, soil physical properties and soil loss via surface erosion: A novel geospatial modelling approach
Agricultural expansion and overgrazing are globally recognized as key contributors to accelerated soil degradation and surface erosion, with direct consequences for land productivity, and environmental…
Guidance
Designing Freshwater Monitoring Programmes to Detect Early Improvement
This short guidance document is to support the design of freshwater monitoring programmes to detect early improvement and is for regional councils, government, and multi-agency…
Journal Article
Modelling soil loss from surface erosion at high-resolution to better understand sources and drivers across land uses and catchments: a national-scale assessment of NZ
Soil erosion is a significant challenge for agricultural regions, with cascading impacts to waterways, land productivity, soil carbon, and ecological health. We provide the first…
Presentation
A Source-to-sink Contaminant Risk Framework To Support Water Quality Policy Across Scales
In the wrong place, or at excessive concentrations, nutrients (nitrogen and phosphorus) and sediment become contaminants. Along with pathogens, they require reduction to improve water…
Summary
Project Summary: What are the Best Sediment Traps for my Hill Country Stream?
This article summarises the results of a Rural Professionals Fund project that aimed to evaluate the effectiveness of three different sediment traps within the same…
Technical Report
Challenges and Opportunities for New Zealand Agriculture under Climate Change (2022 update)
Future climate is likely to have a major impact on the primary sector, and has the potential to drive major shifts in land use as…
Journal Article
Sediment and water-column phosphorus chemistry in streams at baseflow across varying catchment geologies
Streams can attenuate inputs of phosphorus (P) and therefore dampen the likelihood of ecosystem eutrophication. This P attenuation derives from many processes and remains poorly…
Technical Report
National contaminant mapping of soil losses from surficial erosion: an analysis of livestock grazing pressures on soil losses across NZ
For the first time, a national-scale soil loss model of New Zealand has captured both inherent landuse properties, alongside high-resolution calculations of livestock grazing densities…
Technical Report
Sediment traps in hill country
The farmers have been involved in riparian fencing and planting but saw a need to try and reduce the sediment load of water channels that…
Journal Article
The longevity of fencing out livestock as a method of decreasing contaminant concentrations in a headwater stream
Water quality can be improved by fencing off streams from livestock. However, the remedial effect of fencing can fail as livestock trample near stream areas.…
Interactive Tool
Actions to Include in a Farm Environment Plan
This interactive infographic is a compilation of actions to decrease the loss of contaminants from agricultural land. Mitigation actions can be filtered by any of…