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  • Distribution of possums 2002–2014

    Ministry for the Environment
    "The pressure from animal and plant pests is one of the biggest threats to biodiversity in the land environment. Pest predators (such as stoats and possums) eat eggs, birds, lizards, insects, and snails. Other animal pests (such as deer and goats) damage and kill trees and other plants and can compete with indigenous animals for the plants’ fruit and...
    Created 3 May 2018 Updated 8 August 2019
  • River Environment Classification Tasman (2010)

    Ministry for the Environment
    The New Zealand River Environment Classification (REC) organises information about the physical characteristics of New Zealand's rivers. Individual river sections are mapped according to physical factors such as climate, source of flow for the river water, topography, and geology, and catchment land cover eg, forest, pasture or urban. Sections of river...
    Created 3 May 2018 Updated 8 August 2019
  • Total phosphorus, 2009–2013

    Ministry for the Environment
    "Phosphorus is an essential nutrient for plant and animal life. Phosphorus can vary due to differences in land use, climate, elevation, and geology. Total phosphorus (TP) includes all concentrations in a sample, whether dissolved, in solid form or bound to sediment in the river. Dissolved reactive phosphorus (DRP) is the portion which is dissolved and can...
    Created 3 May 2018 Updated 8 August 2019
  • On-road Transport Emissions by Pollutant

    Ministry for the Environment
    Source: National Institute of Water and Atmospheric Research
    Created 3 May 2018 Updated 8 August 2019
  • Land Environments New Zealand (LENZ) - Level 2 Grid (2009)

    Ministry for the Environment
    Land Environments of New Zealand (LENZ) is a classification of fifteen climate, landform, and soil variables chosen for their relevance to biological distributions. Classification groups were derived by automatic classification using a multivariate procedure. Four levels of classification detail have been produced from this analysis, containing 20, 100,...
    Created 3 May 2018 Updated 8 August 2019
  • Predicted average Macroinvertebrate Community Index (MCI) score, 2007–2011

    Ministry for the Environment
    "Macroinvertebrates are small animals without backbones that live on and under submerged logs, rocks, and aquatic plants in the stream bed during some period of their life cycle. They play a central role in stream ecosystems by feeding on periphyton (algae or slime), macrophytes (aquatic plants), dead leaves and wood, or on each other. High...
    Created 3 May 2018 Updated 8 August 2019
  • Nitrate, ammonia and dissolved reactive phosphorus concentrations, NGMP...

    Ministry for the Environment
    "At high concentrations, nitrate–nitrogen may have health impacts where it is for untreated drinking water, and it is also plant nutrient which can contribute to excessive plant and algae growth, potentially damaging the ecological health of rivers and lakes. Ammoniacal nitrogen can be toxic to fish, animals and people at moderate concentrations. Nitrate...
    Created 3 May 2018 Updated 8 August 2019
  • 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 3 May 2018 Updated 8 August 2019
  • El Niño Southern Oscillation Index (1909–2013)

    Ministry for the Environment
    El Niño Southern Oscillation (ENSO). It is an important predictor of how tropical oceans and climate might influence New Zealand’s climate. Being able to predict the timing and intensity of an El Niño or La Niña climate phase is important in predicting and preparing for extreme climatic conditions, such as strong winds, heavy rain, or drought. Such...
    Created 3 May 2018 Updated 8 August 2019
  • Sunshine hours 2013

    Ministry for the Environment
    "Sunshine is important for our health and recreation, and for the environment. It is also important for our agriculture-based economy, for example, for plant growth. This layer shows annual sunshine hours across New Zealand for 2013 as part of the data series for years 1972 to 2013. Data is for a calendar year (January-December). The National Institute of...
    Created 3 May 2018 Updated 8 August 2019
  • River Environment Classification Watershed Otago (2010)

    Ministry for the Environment
    The New Zealand River Environment Classification (REC) organises information about the physical characteristics of New Zealand's rivers. Individual river sections are mapped according to physical factors such as climate, source of flow for the river water, topography, and geology, and catchment land cover eg, forest, pasture or urban. Sections of river...
    Created 3 May 2018 Updated 8 August 2019
  • 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 3 May 2018 Updated 8 August 2019
  • River Environment Classification Southland (2010)

    Ministry for the Environment
    The New Zealand River Environment Classification (REC) organises information about the physical characteristics of New Zealand's rivers. Individual river sections are mapped according to physical factors such as climate, source of flow for the river water, topography, and geology, and catchment land cover eg, forest, pasture or urban. Sections of river...
    Created 3 May 2018 Updated 8 August 2019
  • Annual Average PM10 Concentration - Cities

    Ministry for the Environment
    Greater than 100,000 people. Average is population weighted average of monitoring sites in cities. Note: PM10 concentrations are given in micrograms per cubic metre of air, or µg/m3. Source: Regional councils of Waikato, Wellington, Canterbury, Otago; Auckland Council
    Created 3 May 2018 Updated 8 August 2019
  • River Environment Classification Watershed Northland (2010)

    Ministry for the Environment
    The New Zealand River Environment Classification (REC) organises information about the physical characteristics of New Zealand's rivers. Individual river sections are mapped according to physical factors such as climate, source of flow for the river water, topography, and geology, and catchment land cover eg, forest, pasture or urban. Sections of river...
    Created 3 May 2018 Updated 8 August 2019
  • Dissolved Reactive phosphorus, 2009–2013

    Ministry for the Environment
    "Phosphorus is an essential nutrient for plant and animal life. Phosphorus can vary due to differences in land use, climate, elevation, and geology. Total phosphorus (TP) includes all concentrations in a sample, whether dissolved, in solid form or bound to sediment in the river. Dissolved reactive phosphorus (DRP) is the portion which is dissolved and can...
    Created 3 May 2018 Updated 8 August 2019
  • River Environment Classification West Coast (2010)

    Ministry for the Environment
    The New Zealand River Environment Classification (REC) organises information about the physical characteristics of New Zealand's rivers. Individual river sections are mapped according to physical factors such as climate, source of flow for the river water, topography, and geology, and catchment land cover eg, forest, pasture or urban. Sections of river...
    Created 3 May 2018 Updated 8 August 2019
  • Ammoniacal nitrogen trends, 1989–2013

    Ministry for the Environment
    Small amounts of nitrogen are a natural component of healthy rivers. 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. High concentrations of ammoniacal and nitrate nitrogen can be toxic to fish and other aquatic...
    Created 3 May 2018 Updated 8 August 2019
  • Water clarity, 1989–2013

    Ministry for the Environment
    "Water clarity is a measure of underwater visibility in rivers and streams and can vary due to differences in land use, climate, elevation, and geology. Water clarity can be reduced by the presence of fine particles like silt, mud or organic material in the water. This affects the habitat and feeding of aquatic life like fish and aquatic birds. Water...
    Created 3 May 2018 Updated 8 August 2019
  • Number of extreme weather events identified by ICNZ (1975–2014)

    Ministry for the Environment
    Extreme weather events are weather events that are rare or even statistically unlikely. In New Zealand, such events can be dangerous and costly, both socially and monetarily. They can cause damage that affects productivity and leads to millions of dollars in insurance claims. This dataset relates to the "Insurance losses for extreme weather events"...
    Created 3 May 2018 Updated 8 August 2019