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  • Ammoniacal nitrogen, 2009–2013

    Ministry for the Environment
    "Small amounts of nitrogen are a natural component of healthy rivers. Nitrogen in rivers can vary due to differences in land use, climate, elevation, and geology. Nitrogen is transferred from land to water and is cycled through different forms, which can have different effects. Moderate concentrations of nitrate can cause weeds and algae to grow too fast....
    Created 2 February 2020 • Updated 1 December 2023

  • Nitrogen dioxide concentration at state highway sites 2007–13

    Ministry for the Environment
    Nitrogen dioxide (NO2) is a gas. It can be emitted directly into the air but is most often formed when nitric oxide (NO) emissions react with other chemicals in the air. Nationally, road motor vehicles are the main human-made source of nitrogen oxides (NOx, the collective term for NO2 and NO). NO2 may cause respiratory infections and reduced lung...
    Created 2 February 2020 • Updated 1 December 2023

  • Influenza like illness weekly consultation rates, 2000–16

    Ministry for the Environment
    Influenza is a potentially life-threatening virus that spreads quickly from person to person. It is a significant public health issue in this country, with 10–20 percent of New Zealanders infected every year. While influenza can occur all year round, incidence generally peaks in winter and spring in New Zealand. Some studies suggest this is because the...
    Created 2 February 2020 • Updated 1 December 2023

  • Recruitment of indigenous tree sp māhoe 2002–2014

    Ministry for the Environment
    "The rates of establishment (recruitment) of indigenous tree species vary across New Zealand. Changes in the state of the environment (such as from browsing pests, large-scale weather events, or climate change) may change the rates of recruitment of particular tree species. This in turn may alter forest processes. Repeated surveys of the distribution of...
    Created 2 February 2020 • Updated 1 December 2023

  • Health effects from PM10 2006 and 2012

    Ministry for the Environment
    Particulate matter 10 micrometres or less in diameter (PM10) in the air comprises solid particles and liquid droplets from both natural and human-made sources. PM10 is of particular concern because of high concentrations in some areas. It can also damage health, with associated effects ranging from respiratory irritation to cancer. This indicator...
    Created 2 February 2020 • Updated 1 December 2023

  • Mortality of indigenous tree sp hūpiro 2002–2014

    Ministry for the Environment
    "The rates of death (mortality) of indigenous tree species vary across New Zealand. Changes in the state of the environment (such as from browsing pests, large-scale weather events, or climate change) may change the rates of mortality of particular tree species. This in turn may alter forest processes. Repeated surveys of the distribution of mortality...
    Created 2 February 2020 • Updated 1 December 2023

  • PM2.5 concentrations 2008–13

    Ministry for the Environment
    PM2.5 are particles 2.5 micrometres or less in diameter. PM2.5 is emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry), and petrol and diesel (eg from vehicles). Natural sources have less influence on PM2.5 concentrations than PM10 concentrations. This means PM2.5 comes mainly from human activities. Nationally,...
    Created 2 February 2020 • Updated 1 December 2023

  • Freshwater pests: Fringed water lily

    Ministry for the Environment
    "Freshwater plant and animal pests can have significant negative impacts on ecosystem health by reducing indigenous biodiversity through predation and competition, and destabilising aquatic habitats. Freshwater plant pests can cause economic losses through blocking water intakes for hydroelectricity generation, impeded drainage or irrigation. In addition,...
    Created 2 February 2020 • Updated 1 December 2023

  • Influenza hospital discharges by week (2013)

    Ministry for the Environment
    Influenza is a potentially life-threatening virus that spreads quickly from person to person. It is a significant public health issue in this country, with 10–20 percent of New Zealanders infected every year. While influenza outbreaks can occur all year round, rates peak in winter and spring. This is because the virus can survive longer outside the body...
    Created 2 February 2020 • Updated 1 December 2023

  • Status of widespread indigenous trees - Difference between recruitment and mo...

    Ministry for the Environment
    Eight indigenous tree species, spanning a range of ecological niches, were surveyed twice (between 2002 and 2014) as part of a vegetation monitoring programme. The data from these surveys can be used to assess changes in tree populations. Monitoring the status and trends of these widespread tree species helps us detect large-scale, long-term changes and...
    Created 2 February 2020 • Updated 1 December 2023

  • Soil health and land use - Soil health tests within target range, by land use...

    Ministry for the Environment
    UPDATED 21/04/2017 (See "Land domain updates" page for details; http://www.stats.govt.nz/browse_for_stats/environment/environmental-reporting-series/environmental-indicators/Home/Land/land-domain-updates.aspx) Different land uses put pressure on the land environment and can result in changes to soil health. Healthy soil supports the productivity of...
    Created 2 February 2020 • Updated 1 December 2023

  • Forest carbon stocks trends, 1990–2015

    Ministry for the Environment
    New Zealand’s indigenous and exotic forests absorb carbon dioxide (CO2) from the atmosphere through photosynthesis and store the carbon as biomass and in the soil. On average, more than twice as much carbon per hectare is stored in New Zealand’s mature indigenous forests than in exotic forests planted for wood production. Regenerating indigenous forests...
    Created 2 February 2020 • Updated 1 December 2023

  • Recruitment of indigenous tree sp red beech 2002–2014

    Ministry for the Environment
    "The rates of establishment (recruitment) of indigenous tree species vary across New Zealand. Changes in the state of the environment (such as from browsing pests, large-scale weather events, or climate change) may change the rates of recruitment of particular tree species. This in turn may alter forest processes. Repeated surveys of the distribution of...
    Created 2 February 2020 • Updated 1 December 2023

  • Total suspended particulates exceedances in Auckland, 1965–2013

    Ministry for the Environment
    Total suspended particulates (TSP) consist of all solid particles and liquid droplets up to 100 micrometres (μm) in diameter (ie when compared with PM10 and PM2.5, TSP is the equivalent of PM100). TSP can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry) and petrol and diesel (from vehicles). Natural...
    Created 2 February 2020 • Updated 1 December 2023

  • Seasonality of PM2.5 exceedances

    Ministry for the Environment
    PM2.5 are particles 2.5 micrometres or less in diameter. PM2.5 is emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry), and petrol and diesel (eg from vehicles). Natural sources have less influence on PM2.5 concentrations than PM10 concentrations. This means PM2.5 comes mainly from human activities. Nationally,...
    Created 2 February 2020 • Updated 1 December 2023

  • He Pātaka Wai Ora Report_datasheet raw water nutrients

    Ministry for the Environment

    This dataset has no description

    Created 2 February 2020 • Updated 1 December 2023

  • Recruitment of indigenous tree sp mountain horopito 2002–2014

    Ministry for the Environment
    "The rates of establishment (recruitment) of indigenous tree species vary across New Zealand. Changes in the state of the environment (such as from browsing pests, large-scale weather events, or climate change) may change the rates of recruitment of particular tree species. This in turn may alter forest processes. Repeated surveys of the distribution of...
    Created 2 February 2020 • Updated 1 December 2023

  • PM10 exceedances by airshed 2006–13

    Ministry for the Environment
    Particulate matter 10 micrometres or less in diameter (PM10) in the air comprises solid particles and liquid droplets from both natural and human-made sources. PM10 can be emitted from the combustion of fuels, such as wood and coal (eg from home heating and industry), and petrol and diesel (from vehicles). Natural sources of PM10 include sea salt, dust,...
    Created 2 February 2020 • Updated 1 December 2023

  • Estimated annual seabird captures in trawl and longline fisheries by fishery ...

    Ministry for the Environment
    Along with sea lions, fur seals, and dolphins, seabirds are the protected species most directly affected by fisheries in New Zealand waters (exclusive economic zone and territorial sea). Estimating seabird deaths from bycatch in commercial fishing is one way of assessing the pressure some seabird species face from current fishing practices. About...
    Created 2 February 2020 • Updated 1 December 2023

  • Nitrogen dioxide seasonal trends, 2011-2020

    Ministry for the Environment
    Nitrogen dioxide (NO2) is a gas that is harmful to human health (United States Environmental Protection Agency (US EPA), 2021), ecosystems, and plants (US EPA, 2008). It can be emitted directly into the air but is often formed as a secondary pollutant when nitric oxide (NO) emissions react with other chemicals. It also contributes to the formation of...
    Created 1 December 2021 • Updated 1 December 2023