Extreme wind, 1972–2016

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Creative Commons Attribution 4.0 International

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3998
55
Added
12 Oct 2017

This dataset was first added to MfE Data Service on 12 Oct 2017.

Extreme wind annual statistics for 30 regionally representative sites. The number of days with a maximum gust in the 99th percentile provides information on the frequency of extreme wind events. Percentiles are obtained from all available daily maximum wind gust data. On average, the 99th percentile daily maximum wind gust will be exceeded on approximately 3.6 days per year. Therefore, annual counts higher than this indicate more days than usual with very strong wind gusts recorded; annual counts lower than 3.6 indicate fewer strong wind gust days than usual. By using a percentile threshold we can identify events that are extreme for a particular location. Some places are naturally subject to stronger winds than others, so vegetation can become ‘wind-hardened’ and may have a higher tolerance to high wind gusts (eg a 100 km/hr wind gust may be damaging at one location, but not at another). Using a relative threshold accounts for these differences and better captures extreme wind gust occurrences. The highest maximum gust per year and the average annual highest maximum wind gust both provide information on the magnitude of extreme wind events.
Steady wind can be an important resource, but strong gusts can damage property, topple trees, and disrupt transportation, communications, and electricity. Extreme wind events can occur with frontal weather systems, around strong convective storms such as thunderstorms, and with ex-tropical cyclones. Projections indicate climate change may alter the occurrence of extreme wind events, with the strength of extreme winds expected to increase over the southern half of the North Island and the South Island, especially east of the Southern Alps, and decrease from Northland to Bay of Plenty. Monitoring can help us gauge the potential of, and prepare for, such events.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 89425
Data type Table
Row count 1327
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

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

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Creative Commons Attribution 3.0 New Zealand

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4727
100
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

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 farms

This dataset relates to the "Farm numbers" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52472
Data type Table
Row count 408
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Farm size - Area of large commercial agricultural activities, 2002, 2007 and 2012

Licence

Creative Commons Attribution 3.0 New Zealand

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You must attribute the creator in your own works.

4995
99
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

Farm size describes the area of large commercial properties (registered for goods and services tax) that farm crops and/or livestock. It is important to measure the extent of these agricultural activities because their size influences the extent of their impacts on soil health and water quality.

Column headings:
area_ha = total area of farming activity measured in hectares

This dataset relates to the "Farm size" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52471
Data type Table
Row count 408
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Fish Index of Biotic Integrity, 1998 - 2018

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Creative Commons Attribution 4.0 International

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1193
9
Added
15 Apr 2020

This dataset was first added to MfE Data Service on 15 Apr 2020.

This dataset summaries backpack electric fishing observations from the New Zealand Freshwater Fish Database for the period 1998 - 2018. It provides the locations and scores for Fish Index of Biotic Integrity (IBI) (including sub-metric scores).

Technical report available at www.mfe.govt.nz/publications/environmental-reporti....

More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 104589
Data type Table
Row count 5939
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Fish licences issued by Fish and Game, 1980/81 to 2013/14 seasons

Licence

Creative Commons Attribution 3.0 New Zealand

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You must attribute the creator in your own works.

4064
32
Added
29 Sep 2015

This dataset was first added to MfE Data Service on 29 Sep 2015.

Fresh water in New Zealand is highly valued for recreational activities, including fishing. Freshwater angling (primarily for introduced ‘sports fish’ such as brown trout, rainbow trout, and chinook salmon) is a popular leisure activity. Fish licences issued by Fish & Game New Zealand provide an indication of recreational fishing activity at freshwater locations around the country.

This dataset relates to the "Participation in recreational fishing" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52543
Data type Table
Row count 238
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Fishing effort (number of dredge tows) by year (1990–2014)

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Creative Commons Attribution 3.0 New Zealand

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3782
39
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

Seabed trawling is the practice of towing fishing nets near or along the ocean floor. The towing process can physically damage seabed (benthic) habitats and species. It can also stir up sediment from the seabed. This creates sediment plumes that change light conditions. This can affect marine species (for example by limiting their capacity to generate energy through photosynthesis) and smother sensitive species.
This dataset relates to the "Commercial seabed trawling and dredging" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52505
Data type Table
Row count 50
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Fishing effort (number of trawl tows) by year (1990–2014)

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Creative Commons Attribution 3.0 New Zealand

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4677
81
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

Seabed trawling is the practice of towing fishing nets near or along the ocean floor. The towing process can physically damage seabed (benthic) habitats and species. It can also stir up sediment from the seabed, creating sediment plumes that can smother sensitive species and change light conditions. This can affect marine species (eg by limiting their ability to generate energy through photosynthesis).
This dataset relates to the "Commercial seabed trawling and dredging" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52504
Data type Table
Row count 75
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Forest carbon stocks trends, 1990–2015

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Creative Commons Attribution 4.0 International

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4144
13
Added
12 Oct 2017

This dataset was first added to MfE Data Service on 12 Oct 2017.

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 are also an important store of carbon, adding carbon every year as they grow. Total carbon stored in exotic forests will fluctuate over decades as the forests grow from seedlings to mature trees, are harvested, and replanted. Because CO2 is the major driver of climate change, forests provide important mitigation services and help New Zealand meet its climate change commitments.
The trend was assessed using the Theil-Sen estimator and the Two One-Sided Test (TOST) for equivalence at the 95% confidence level.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 89410
Data type Table
Row count 2
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Forest carbon stocks, 1990–2015

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3888
23
Added
17 Oct 2017

This dataset was first added to MfE Data Service on 17 Oct 2017.

Forest carbon stocks and areas, including stock changes, areas, and deforestation.
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 are also an important store of carbon, adding carbon every year as they grow. Total carbon stored in exotic forests will fluctuate over decades as the forests grow from seedlings to mature trees, are harvested, and replanted. Because CO2 is the major driver of climate change, forests provide important mitigation services and help New Zealand meet its climate change commitments.
More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Table ID 89475
Data type Table
Row count 1066
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Freshwater fish observational data, 1977-2015

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Creative Commons Attribution 3.0 New Zealand

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5171
77
Added
24 Apr 2017

This dataset was first added to MfE Data Service on 24 Apr 2017.

Freshwater fish are an important component of freshwater ecosystems, have intrinsic biodiversity values and are a valued resource for Māori, recreational and commercial fishers. The presence or absence of a fish species can be affected by changes in catchment land cover and land use, in-stream habitat, fish passages (routes for moving up and down waterways), pests, and contaminants.

The file contains the information associated with each record in the New Zealand Freshwater Fish Database used in the report, and the associated River Environment Classification information of the location of the observation.

Table ID 53599
Data type Table
Row count 26915
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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