Publication Search
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April 2008The Ministry for the Environment's emission inventory report under the Carbon Neutral Public Service programme for the period 1 July 2006 to 30 June 2007. The programme was discontinued in March 2009. Read more -
May 2019This report analyses environmental conditions that cause the growth of periphyton in streams and rivers. Read more -
September 2019This draft NIWA report provides the first attempt to develop bottom-line thresholds for suspended and deposited sediment based on ecological responses for New Zealand rivers and streams. Read more -
November 1998This 1998 report provides data on the levels of dioxins and PCBs in New Zealand retail foods, including dairy products, meat and fish, as well as other staple foods such as potatoes and cereals. Read more -
May 2020This NIWA report summarises existing literature on the consequences of delaying reductions to nutrient inputs on rivers, estuaries and lakes. Read more -
April 2015One of two reports that assessed the options and implications of using the Macroinvertebrate Community Index (MCI) as an attribute in the National Policy Statement for Freshwater Management. It looked at identifying potential threshold values to define numeric attribute states for MCI. Read more -
December 2013An investigation into the feasibility of using freshwater fish predictive models in national state of the environment indicators. Read more -
February 2012This independent report surveys literature on the regulation of chemical and biological risks in Australia, Canada, China, Japan, the European Union, the United Kingdom, and the United States. Read more -
June 2012This report identifies the key factors that influence businesses' decisions to innovate using new organisms in New Zealand. The aim of the project was to determine whether regulation for managing risks is an important determinant in such decisions. Read more -
September 2002This study measured dioxin in soils at residential properties in the New Plymouth suburb of Paritutu. It was undertaken because of longstanding community issues with the history of dioxin emissions from a chemical plant located in the suburb. Read more -
February 2001This 2001 report provides details about genetic modification (GM) research being conducted in New Zealand and ideas as to how GM and non-GM crops could coexist 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 -
August 2001This report summarises the findings of the "Valuing New Zealand's clean green image" report. 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 modelling New Zealand’s lake water quality. Read more -
May 2019This report develops a model predicting the reference state for stream macroinvertebrates across New Zealand. Read more -
May 2020A literature review of studies that jointly considered climate and freshwater policy in New Zealand. Read more -
September 2019This data report provides an annual data picture of brassica grown in New Zealand. Read more -
June 2010The report assesses how well Integrated catchment management is working in New Zealand for managing freshwater quality. Read more -
May 2019This report provides information to help interpret trends in water quality of New Zealand’s lakes and rivers. Read more -
July 2006This report investigates approaches for the allocation and subsequent reallocation of water in New Zealand, including situations of over-allocation. Read more -
December 1998This 1998 report provides data on the concentrations of dioxins, PCBs, organochlorine pesticides and chlorophenols in New Zealand soils. 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 -
August 2010The report updates an analysis of trends in water quality between 1989 and 2003 which was summarised in Environment New Zealand 2007. Read more -
December 1999This 1999 report provides data on the concentrations of dioxins, PCBs, organochlorine pesticides and chlorophenols in New Zealand ambient (outdoor) air. 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 -
May 2020This report presents research conducted by Lincoln University on the willingness to pay for the various attributes associated with New Zealand’s green premium. Read more -
July 2009The latest indicator update providing information on the pressure energy demand and the supply of energy and electricity generation places on New Zealand’s environment. Read more -
May 2020This Castalia report estimates the administrative costs imposed under the Action for healthy waterways package for New Zealand’s 16 regional councils. 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 -
October 2019This NIWA consultant report provides analysis of state and trends in a number of water quality variables in urban rivers and streams in New Zealand. Read more -
June 1999This 1999 report provides data on the concentrations of dioxins, PCBs, organochlorine pesticides and chlorophenols in sediment and shellfish collected from 12 estuaries throughout New Zealand. Read more -
June 2012This report examines whether the scale of compliance costs arising from New Zealand’s hazardous substances regime was comparable with compliance costs imposed on users of chemicals in overseas jurisdictions. Read more -
December 1998This 1998 report provides data on the concentrations of dioxins, PCBs, organochlorine pesticides and chlorophenols in river water and finfish (eel and trout) collected from 13 New Zealand rivers. Read more -
March 2020Phormidium (now called Microcoleus) is a cyanobacterium (toxic algae) that grows in some New Zealand rivers. Read more -
March 2020Phormidium (now called Microcoleus) is a cyanobacterium (toxic algae) that grows in some New Zealand rivers. It produces neurotoxins called anatoxins and ingestion of cyanobacteria mats has caused numerous dog deaths. Read more -
March 2020Phormidium (now called Microcoleus) is a cyanobacterium (toxic algae) that grows in some New Zealand rivers. Read more -
October 2013The Ministry for the Environment commissioned ACIL Allen Consulting to undertake a cost-benefit analysis of sorting options for e-waste plastics being recycled in New Zealand that potentially contain brominated flame retardants. Read more -
February 2017Sediment is an important contaminant in New Zealand freshwaters. This report presents the development of an analytical framework to empirically relate various key instream measures of sediment to catchment sediment loads. Read more -
July 2001A Royal Commission on Genetic Modification was established by the Government on 8 May 2000 to look into and report on issues about genetic modification in New Zealand. This report presents their findings. Read more -
November 2005This report investigates the drivers behind New Zealanders' uptake of home heating and energy efficiency improvements - or their reluctance to do so. It should be read in conjunction with the Phase 2 report. 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 -
March 2008This report estimates the extent of dioxin contamination at sawmill sites in New Zealand where pentachlorophenol (known as PCP) was used as a timber treatment in sprays or dips until its withdrawal in 1988. Read more -
June 2016This report presents the findings of a review of continuous dissolved oxygen data in New Zealand including an assessment of observed dissolved oxygen concentrations in relation to the National Objectives Framework (point source) band thresholds. Read more -
May 2020This report presents the modelled results of the impact of the National Policy Statement for Freshwater Management (2017) and two variants of the Essential Freshwater package on New Zealand’s economy in 2030 and 2050. Read more -
May 2010This report is one of two prepared for the Ministry for the Environment by NIWA, which update national indicator data for river water quality in New Zealand and help provide the evidence base for policy and decision makers. Read more -
September 2009This report provides an update of results for indicators of groundwater quality in New Zealand. It summarises average water quality at almost 1000 monitoring sites over the period 1995-2008, as well as trends at the same sites within that period of time. 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 -
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