907 datasets found

  • Total 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

  • Bird species on public conservation land, 2013

    Ministry for the Environment
    The status of our bird communities is an important indicator for the condition of our ecosystems. Many indigenous birds play key ecological roles, including dispersing seeds and pollinating flowers. In some situations, exotic (not indigenous to New Zealand) bird species can partially fulfil these roles. Measuring the composition of bird communities across...
    Created 3 May 2018 • Updated 8 August 2019

  • Land Environments New Zealand (LENZ) - Level 3 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

  • River Environment Classification Watershed Manawatu (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

  • Marine Environment Classification EEZ 10 Classes (2010)

    Ministry for the Environment
    The Marine Environment Classification (MEC), a GIS-based environmental classification of the marine environment of the New Zealand region, is an ecosystem-based spatial framework designed for marine management purposes. Several spatially-explicit data layers describing the physical environment define the MEC. A physically-based classification was chosen...
    Created 3 May 2018 • Updated 8 August 2019

  • Water quality parameters in coastal and estuarine environments (2013)

    Ministry for the Environment
    Coastal and estuarine ecosystems are affected by changes in the levels of nutrients, oxygen, and light. An overload of nutrients can be toxic or lead to algal blooms. These blooms can kill marine life by depleting oxygen levels. Suspended sediment can smother habitats or reduce light levels, affecting photosynthesis. We report on five measures of water...
    Created 3 May 2018 • Updated 8 August 2019

  • Water clarity trends, 2009–2013

    Ministry for the Environment
    Water clarity is a measure of underwater visibility in rivers and stream. 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 clarity is an important indicator of the health of a waterway, and is also a...
    Created 3 May 2018 • Updated 8 August 2019

  • River Environment Classification Taranaki (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

  • Farm numbers - Farm numbers by agricultural activity, 2002, 2007, and 2012

    Ministry for the Environment
    Farm numbers describes the number of large commercial properties (registered for goods and services tax) that farm crops and/or livestock. It is important to measure the number of large farms involved in these agricultural activities because their extent determines their impacts on soil health and water quality. Column headings: num_farms = number of...
    Created 3 May 2018 • Updated 8 August 2019

  • Land cover database v4 0 class orders

    Ministry for the Environment
    "Land cover describes the extent of vegetation, water bodies, built environments, and bare natural surfaces (eg gravel and rock) across New Zealand. Measuring the composition and changes in land cover can help us understand the pressures that different land uses are placing on the biodiversity and functioning of ecosystems. This data set relates to the...
    Created 3 May 2018 • Updated 8 August 2019

  • River Environment Classification Hawkes Bay (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

  • River Environment Classification Gisborne (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

  • Nitrogen dioxide concentrations and exceedances

    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 3 May 2018 • Updated 8 August 2019

  • Livestock numbers, 1994–2015

    Ministry for the Environment
    Livestock numbers reflect changes in the number of farmed beef and dairy cattle, deer, and sheep across New Zealand. Livestock farming is a widespread land use in this country. It is important to monitor livestock numbers, because concentrated numbers, or large increases in numbers, can affect the indigenous biodiversity, soil health, and water quality....
    Created 3 May 2018 • Updated 8 August 2019

  • Median Escherichia coli concentration

    Ministry for the Environment
    E.coli is a type of bacteria commonly found in the intestines of warm–blooded animals (including people). When found in freshwater, it can indicate the presence of pathogens associated with faecal contamination, from sources such as waste from humans and farmed animals such as sheep and cows. E.coli concentrations can vary due to differences in land use,...
    Created 3 May 2018 • Updated 8 August 2019

  • PM10 concentrations by site 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 3 May 2018 • Updated 8 August 2019

  • Prediction of wetlands before humans arrived

    Ministry for the Environment
    "Wetlands support unique biodiversity and provide important services. They clean water of nutrients and sediment, help dampen floods, provide habitat, and act as carbon sinks. They are also valued for their spiritual and cultural significance and as important sources of food and materials, such as flax. Draining them for agricultural and urban development...
    Created 3 May 2018 • Updated 8 August 2019

  • Nitrogen leaching, 2011

    Ministry for the Environment
    "Nitrogen is an essential nutrient for plant growth. It occurs naturally, but in agricultural systems more nitrogen is commonly added to soils as fertiliser or from livestock waste. Not all the additional nitrogen can be taken up by plants. Some nitrogen will drain (leach) as nitrate from the soil and can enter waterways, potentially causing ecological...
    Created 3 May 2018 • Updated 8 August 2019

  • Daily peak, noon, and SED UV (UVM dataset)

    Ministry for the Environment
    Too much exposure to the sun's ultraviolet (UV) radiation can cause skin cancer. Ozone absorbs some UV radiation, and UV levels can vary in relation to changes in atmospheric ozone. Monitoring UV levels can help us understand current skin cancer risk. The most reliable data on solar UV irradiance in New Zealand are from spectroradiometers developed and...
    Created 3 May 2018 • Updated 8 August 2019

  • PM10 concentrations in towns and cities 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 3 May 2018 • Updated 8 August 2019
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