Publication Search
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December 2013An investigation into the feasibility of using freshwater fish predictive models in national state of the environment indicators. Read more -
December 2013An assessment of the representativeness and statistical power of state of environment river monitoring sites across New Zealand. Read more -
December 2013The aim of a Composite River Condition Index for New Zealand is to combine a number of sub-indices to communicate a representative holistic picture of river condition. This report investigates three indices and discusses limitations and areas for improvement. Read more -
November 2013This report analyses the economic consequences of achieving a nitrate toxicity bottom line based on the National Objectives Framework in the Hinds zone in Canterbury under a number of different policy scenarios. Read more -
November 2013This report provides an overview of the contribution and the value of water to the outputs of key economic sectors in the region. Read more -
November 2013This study evaluates the economic impacts and environmental outcomes of regional policy scenarios to reduce nutrient discharges at farm level in Southland. Read more -
November 2013This study assesses whether regional policy scenarios modelled at farm level (NZIER study) can result in water quality concentrations that can achieve national bottom lines for ecological health and human health in the Southland region. Read more -
November 2013This study identifies the non-market values (e.g. recreational, existence) associated with freshwater in Southland and provides a first step in assessing the marginal benefit of improving water quality on some of those values. Read more -
November 2013This report presents the results of the research project that looks into understanding farmers' responses to policies setting limits on the use of freshwater resources. Read more -
November 2013The case studies present an introduction to the potential mitigation costs to reduce contaminant lossess at industrial and municipal sites that are point sources of contaminants. Read more -
November 2013This summary report provides an overview of the component economic impact studies relevant to the Southland Region. Read more -
November 2013This report evaluates the potential economic impact on electricity generation arising from hypothetical altered minimum flow regimes on various rivers (used for electricity generation). Read more -
November 2013This technical report provides background information about temperature, dissolved oxygen and pH as potential attributes to protect the 'Ecosystem Health' value in rivers. It also provides information on regulatory approaches used internationally. Read more -
November 2013This technical report summarises the outcomes of the ‘Periphyton Science Panel’ deliberations to define a periphyton attribute for ecosystem health in rivers. Read more -
November 2013This technical report summarises the outcomes of the ‘Cyanobacteria Science Panel’ deliberations to define a secondary contact recreation cyanobacteria attributes for rivers and lakes. Read more -
November 2013This technical report summarises the outcomes of the 'Lakes Science Panel' deliberations to define a classification system and ecosystem health attributes for lakes. It also provides comparisons of monitoring data from 114 lakes with the proposed attributes. Read more -
November 2013This technical report provides evidence and advice used in setting the E. Coli attribute bands for secondary contact recreation in rivers and lakes. Read more -
November 2013This existing report was used to inform the development of the nitrate toxicity attribute. Read more -
November 2013This report compiles a list of mitigation strategies for managing water quality that are currently available in New Zealand. It provides a commentary on their relative cost-effectiveness. Read more -
November 2013This report compiles a list of mitigation strategies for managing water quality that are currently available in New Zealand. It provides a commentary on their relative cost-effectiveness. Read more -
November 2013This report summarises the work of the freshwater National Objectives Framework Reference Group, including identifying some potential bottom lines, and recommendations for further work. The group included representatives from iwi, regional councils and key stakeholder groups. Read more -
July 2013A comparison study of different predictive macroinvertebrate models. An approach is recommended and this is used to predict macroinvertebrate community condition in unmonitored reaches. Read more -
July 2013This report details the approach used to compile regional council and NIWA water quality data sets, calculate state and trends, and develop predictive models of water quality parameters. The modelling is used to predict water quality in unmonitored reaches. Read more -
June 2013Recreational water quality assessment software user’s guide. Read more