Search datasets
414 datasets found
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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 3 March 2025 -
Distribution of douglas fir 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 2 February 2020 • Updated 3 March 2025 -
Growing Degree Days, state, 1972 - 2022
Ministry for the EnvironmentThis dataset measures growing degree days (GDD) at 30 sites across Aotearoa New Zealand from at least 1972 to 2022. We report counts of average annual growing degree days for each site from 2013 to 2022.. Variables: sIte: Site the NIWA climate stations represent. year: Given year the total growing degrees are calculated for. base_temperature:The base...Created 1 February 2024 • Updated 3 March 2025 -
Frost days, trends,1972-2022
Ministry for the EnvironmentThis indicator report trends in the number of frost days for 30 sites across Aotearoa New Zealand from 1972 to 2022. The number of frost days changes from year to year in response to variable weather patterns, and their occurrence is also influenced by climate change. Climate models project we may experience fewer cold and more warm extremes in the...Created 1 February 2024 • Updated 3 March 2025 -
LUCAS Chatham Islands Land Use Map 1990 2008 2012 2016 v002 DEPRECATED
Ministry for the EnvironmentThis data is deprecated. Please visit https://data.mfe.govt.nz/layer/118263 for the latest version. The Chatham Islands Land Use Map is composed of 12 land use classifications nominally at 1 January 1990, 1 January 2008, 31 December 2012 and 31 December 2016 (known as "1990", "2008", "2012" and "2016") and was created using broadly the same methodology as...Created 3 June 2024 • Updated 3 March 2025 -
Predicted streambed sedimentation, 1990–2011
Ministry for the Environment"Fine sediment is the collective term for inorganic particles deposited on the streambed less than 2mm in size. Urban development and agriculture and forestry around waterways can increase the amount of sediment entering river systems. Sedimentation can clog space between pebbles that are used by aquatic insects and fish, alter food sources, and remove...Created 2 February 2020 • Updated 3 March 2025 -
Distribution of stoats 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 2 February 2020 • Updated 3 March 2025 -
Observed streambed sedimentation, 1990–2011
Ministry for the Environment"Fine sediment is the collective term for inorganic particles deposited on the streambed less than 2mm in size. Urban development and agriculture and forestry around waterways can increase the amount of sediment entering river systems. Sedimentation can clog space between pebbles that are used by aquatic insects and fish, alter food sources, and remove...Created 2 February 2020 • Updated 3 March 2025 -
Distribution of rats 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 2 February 2020 • Updated 3 March 2025 -
Warm days, state, 1972 - 2022
Ministry for the EnvironmentThis indicator provides data for the number of warm days (daily maximum temperature above 25 degrees Celsius) for the 30 sites across New Zealand from at least 1972 to 2022. Global average temperatures have increased by around 1 degree Celsius in the last century, almost certainly a result of high levels of atmospheric greenhouse gases emitted from human...Created 1 February 2024 • Updated 3 March 2025 -
High class land for food production North Island 2012
Ministry for the Environment"This data identified areas in the South Island that have been classified as being the most productive for growing food. It supports most crops across New Zealand. Expanding lifestyle blocks and urban areas reduce the availability of high-class land for commercial crop growing, and this land is unlikely to be returned to primary production. This affects...Created 2 February 2020 • Updated 3 March 2025 -
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 2 February 2020 • Updated 3 March 2025 -
Extreme rainfall, state, 1960 - 2022
Ministry for the EnvironmentThis dataset measures extreme rainfall at 30 sites across Aotearoa New Zealand from 1960 to 2022. We measure the maximum amount of rainfall in a single day (‘maximum one-day rainfall’), the number of very wet days (‘very wet days’), and the percentage of annual rainfall from very wet days (‘rainfall due to very wet days’). We present annual values for...Created 1 February 2024 • Updated 3 March 2025 -
Extreme rainfall, trends, 1960 - 2022
Ministry for the EnvironmentThis dataset measures extreme rainfall at 30 sites across Aotearoa New Zealand from 1960 to 2022. We measure the maximum amount of rainfall in a single day (‘maximum precipitationl’), the number of very wet days (‘very wet days’), and the percentage of annual rainfall from very wet days (‘very wet day precipitation percent’). We present trends against the...Created 1 February 2024 • Updated 3 March 2025 -
Lightning_GroundStrikes_by_Region
Ministry for the EnvironmentLightning is the discharge of electricity from thunderstorms. Ground strikes can cause significant damage to property and infrastructure, and injure or kill people and livestock. Lightning is often associated with other severe weather events, such as strong wind gusts. Thunderstorms may increase in frequency and intensity with climate change. This dataset...Created 2 February 2020 • Updated 3 March 2025 -
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 2 February 2020 • Updated 3 March 2025 -
Growing Degree Days, trends, 1972 - 2022
Ministry for the EnvironmentThis dataset shows the trends of annual growing degree days (GDD) for 30 sites across New Zealand from at least 1972 to 2019. GDD are the total number of degrees Celsius above a base threshold temperature for each day. We use a base threshold of 10 degrees Celsius to report on the annual GDD for each of these sites and trends. Growing degree days (GDD)...Created 1 February 2024 • Updated 3 March 2025 -
River Environment Classification Otago (2010) (DEPRECATED)
Ministry for the EnvironmentThe 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 2 July 2020 • Updated 3 March 2025 -
Nitrate–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 3 March 2025 -
Gas and particulate matter emissions 2001–2013
Ministry for the Environment"This dataset shows estimated annual emissions for different pollutants (tonnes per square kilometre): Particulate matter 10 micrometres or less in diameter (PM10); Particulate matter 2.5 micrometres or less in diameter (PM2.5); Sulphur dioxide; Sulphur Oxides (SOx); Carbon Monoxide (CO), and; Nitrogen Oxides (NOx). Measures of: - PM10 and PM2.5 are from...Created 1 February 2024 • Updated 3 March 2025
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