Publication Search
Search below then narrow your results using the options on the left.
-
September 2019This report sets out an economic analysis of modelled assessments of four potential options for managing the effects of farming on freshwater. Read more -
September 2019This report sets out the results of a modelling exercise that assessed the potential economic impacts of meeting a range of contaminant loads and attributes states for nitrogen, phosphorus, and sediment in the Ruamahanga catchment in Wairarapa. Read more -
September 2019As part of the Essential Freshwater programme, the Government is considering changes to nitrogen and phosphorus regulations. This study aimed to determine the impact of the proposed new nitrogen regulation. Read more -
September 2019This report examines how potential rules in a national environmental standard would impact the agricultural sector in terms of farm economics, and nitrogen and phosphorus discharges to water. Read more -
September 2019This data report provides an annual data picture of brassica grown in New Zealand. Read more -
September 2019This report prepared by MRCagney informs work on understanding and measuring the wider costs and benefits of urban development under the Urban Growth Agenda. Read more -
September 2019This report summarises existing literature reviews on the effectiveness of erosion and sediment control interventions for agriculture and reviews factors of variation in their effectiveness. Read more -
September 2019This report from ESR describes the methodology and findings of an assessment of changes in levels of compliance with the Drinking-water Standards for New Zealand (DWSNZ) from 2005 to July 2017. Read more -
September 2019This report describes the final stage of a multi-year research programme to develop thresholds for in-stream suspended and deposited sediment. Read more -
September 2019This report by Kāhui Wai Māori sets out recommendations for our nation to journey together in implementing a managed transitoin to a new system of care and respect for water. Read more -
August 2019This Beca report presents a review and analysis of the main urban zoning provisions within district plans for selected ‘high-growth’ councils. Read more -
July 2019This report describes the methodology and findings of an assessment of the potential impacts of national implementation of drinking water source protection zones. Read more -
July 2019This report provides guidelines for the delineation of drinking water source protection zones including specifications for a ‘default’ national approach. Read more -
May 2019This report analyses environmental conditions that cause the growth of periphyton in streams and rivers. Read more -
May 2019This report outlines the different potential approaches for characterising the pressure created by dams on the flow regime of rivers and streams. Read more -
May 2019This report characterises the pressure on surface water flows from actual water takes for the Horizons (Manawatu-Wanganui) and Greater Wellington regions in the lower half of the North Island. Read more -
May 2019This report updates previously published statistics on water consented to be taken from surface and groundwater sources for consumptive uses (such as irrigation or drinking water). Read more -
May 2019This report refines and updates 2011 modelling on suspended sediment loads across New Zealand with new and longer calibration datasets and updated predictors. Read more -
May 2019This report analyses seasonal patterns in river and lake water quality across New Zealand, using data from 2013–2017. Read more -
May 2019This report presents and tests a range of macroinvertebrate metrics for New Zealand streams and rivers that are sensitive to changes in sediment and periphyton. Read more -
May 2019This report develops a model predicting the reference state for stream macroinvertebrates across New Zealand. Read more -
May 2019This report presents and tests a macroinvertebrate metric for New Zealand streams and rivers that is sensitive to changes in flow. Read more -
May 2019This report reviews how mechanistic (process-based) models simulate periphyton biomass using algorithms describing known growth and loss processes based on nutrients, light, temperature, grazing, and physical factors. Read more -
May 2019This report provides information on the susceptibility to eutrophication of coastal water bodies to nutrient loads from fresh water. Read more -
May 2019This report provides information to help interpret trends in water quality of New Zealand’s lakes and rivers. Read more -
May 2019This report summarises a workshop held to gather feedback on the ‘Interim New Zealand Guidelines for Cyanobacteria in Recreational Fresh Waters’. Read more -
May 2019This report examines whether measures of the macroinvertebrate community can provide information on the health of the trout populations that feed on them, based on existing data. Read more -
May 2019This report recommends river habitat modification indicators that can be used for national environmental reporting under the Environmental Reporting Act. Read more -
May 2019This report recommends river biodiversity and ecosystem process impact indicators that can be used for national environmental reporting under the Environmental Reporting Act. Read more -
May 2019This report outlines recommended changes to the ‘Interim New Zealand Guidelines for Cyanobacteria in Recreational Fresh Waters’. Read more -
April 2019This report summarises analysis methods and outcomes for modelling New Zealand’s lake water quality. Read more -
April 2019This report summarises analysis methods and outcomes for state and trends across New Zealand’s lake water quality monitoring network. Read more -
April 2019This report summarises analysis methods and outcomes for modelling New Zealand’s river water quality. Read more -
April 2019This report summarises analysis methods and outcomes for state and trends across New Zealand’s river water quality monitoring network. Read more -
April 2019This report summaries the published literature on land-use impacts on New Zealand's freshwater and coastal environments. Read more -
April 2019This report summarises analysis methods and outcomes for modelling nitrate-nitrogen leaching from livestock in New Zealand, from 1990 to 2017. Read more -
December 2018Ministry for the Environment, in partnership with Bay of Plenty Regional Council, commissioned Perrin Ag Consultants Ltd and Manaaki Whenua Landcare Research to develop mitigation bundles for use in evaluating the cost of improving water quality in the Kaituna-Pongakawa-Waitahanui and Rangitāiki Water Management Areas. Read more -
December 2018Ministry for the Environment, in partnership with Bay of Plenty Regional Council, commissioned Perrin Ag Consultants Ltd and Manaaki Whenua Landcare Research to assess the farm/orchard-gate economic impact of applying a range of mitigation practices to reduce losses of nitrogen, phosphorus, E. coli and sediment. Read more -
December 2018This report summarises the findings of the Ministry’s review of the National Environmental Standard for Source of Human Drinking Water. Read more -
December 2018Ministry for the Environment, in partnership with Bay of Plenty Regional Council, commissioned a literature review to get an accessible summary of relevant research carried out in New Zealand on methods to manage sediment and their economic assessment. Read more -
September 2018This report has two sections: Section 1, facilitated by Te Ātiawa Manawhenua Ki Te Tau Ihu Trust, describes the history and cultural values associated with the Waitohi and Waikawa streams. Section 2, an interim report by the Marlborough District Council, addresses Water Quality in the Waitohi and Waikawa catchments. This work will be used to inform future work that both parties can undertake in these catchments. Read more -
September 2018The Ministry for the Environment commissioned this research to identify perceived barriers to the adoption of any of the three mechanisms proposed in the draft plan change for the Tutaekuri, Ahuriri, Ngaruroro and Karamu catchments (known as ‘TANK’). Read more -
September 2018This report offers preliminary guidance to water management groups(WMGs), regional councils and other interested parties on how WMGs can be structured and what regional council plans should contain to improve the likelihood that groups will achieve the freshwater outcomes desired by their communities. Read more -
August 2018Trend analyses performed on many sites are regularly aggregated by water quality variable and summarised in tabular, graphical or map format as part of environmental reporting. Read more -
May 2018This report outlines the establishment of reference conditions and trigger values. Reference conditions are defined as the chemical, physical or biological conditions that can be expected in streams and rivers with minimal or no anthropogenic influence. Read more -
May 2018Phormidium is a potentially toxic, mat-forming benthic cyanobacterium found in an increasing number of New Zealand rivers. This report outlines a study which assessed Phormidium toxin levels in the Cardrona (Otago), Mataura (Southland) and Hutt (Wellington) Rivers in 2017. Read more -
May 2018The Managing Upstream project aims to help inform management decisions when establishing freshwater objectives under the Freshwater NPS and increase knowledge on the state of different estuary types in New Zealand. Read more -
May 2018The Managing Upstream project aims to help inform management decisions when establishing freshwater objectives under the Freshwater NPS and increase knowledge on the state of different estuary types in New Zealand. Read more -
May 2018Phormidium is a potentially toxic, mat-forming benthic cyanobacterium found in an increasing number of New Zealand rivers. This report outlines a study which investigated drivers of Phormidium blooms in New Zealand rivers to predict risk of blooms. Read more -
May 2018This report provides an environmental classification system for a potential deposited sediment indicator in the National Objectives Framework. The system classifies streams according to their modelled reference state. This report is an interim deliverable for an ongoing research programme that builds on and refines its findings and will conclude in June 2018. Read more