Lake water quality trends, 2004-2013

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Creative Commons Attribution 3.0 New Zealand

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8102
88
Added
29 Sep 2015

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

When nutrients accumulate in lakes (referred to as ‘nutrient enrichment’) above certain levels, they can make the lakes murky and green with algae, and lower oxygen levels. Lakes with extremely poor water quality are rarely suitable for recreation and provide poor habitats for aquatic species.

Trends in the following parameters are provided:
Trophic Level Index 3 (TLI)
Chlorophyll-a (CHLA)
Bottom-water dissolved oxygen (DObottom)
Ammoniacal nitrogen (NH4N)
Oxidised nitrogen (NO3N)
Total nitrogen (unfiltered) (TN)
Dissolved reactive phosphorus (DRP)
Total phosphorus (unfiltered) (TP)

For more information please see:
Larned, S, Snelder, T, Unwin, M, McBride, G, Verburg, P, McMillan, H (2015).Analysis of Water Quality in New Zealand lakes and Rivers: data sources, data sets, assumptions, limitations, methods and results. NIWA Client Report no. CHC2015-033. Available at data.mfe.govt.nz/x/DDui3u from the Ministry for the Environment dataservice.

This dataset relates to the "Lake water quality: Trophic Level Index" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52538
Data type Table
Row count 3724
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Lake water quality, modelled, 2016 - 2020

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Creative Commons Attribution 4.0 International

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408
1
Added
11 Aug 2022

This dataset was first added to MfE Data Service on 11 Aug 2022.

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "Lake water quality" indicator (available at www.stats.govt.nz/indicators/lake-water-quality).

We report on eight biological, chemical, and physical lake water quality attributes based on spatially modelled data: trophic level index (TLI), chlorophyll-a, E. coli, total phosphorus, total nitrogen, ammoniacal nitrogen, nitrate-nitrogen, and clarity.

We also report median values and TLI and NOF bands for selected attributes using spatially modelled data with predictions for 3,813 lakes in New Zealand that are larger than 1 hectare.

High concentrations of the measured biological and chemical attributes or low clarity indicates poor habitats for some species of animals and plants, risks for human recreation, potential toxic effects on aquatic life, and poor overall lake health.

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. Summary report available at environment.govt.nz/publications/environment-aotea....

Table ID 109652
Data type Table
Row count 53382
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Lake water quality, state, 2016 - 2020

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

457
1
Added
11 Aug 2022

This dataset was first added to MfE Data Service on 11 Aug 2022.

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "Lake water quality" indicator (available at www.stats.govt.nz/indicators/lake-water-quality).

We report on eight biological, chemical, and physical lake water quality attributes based on measurements made at monitored lake sites: trophic level index (TLI), chlorophyll-a, E. coli, total phosphorus, total nitrogen, ammoniacal nitrogen, nitrate-nitrogen, and clarity.

For all attributes we report on the median values for monitored sites during the period 2016–20. For selected attributes we also report:

  • how these values compare to the National Objectives Framework (NOF) bands related to ecosystem health (trophic level), toxicity, and E. coli (MfE, 2020)
  • a comparison of NOF and trophic level index (TLI) bands at monitored sites with the proportion of human modified landcover in the upstream catchment area

High concentrations of the measured biological and chemical attributes or low clarity indicates poor habitats for some species of animals and plants, risks for human recreation, potential toxic effects on aquatic life, and poor overall lake health.

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. Summary report available at environment.govt.nz/publications/environment-aotea....

Table ID 109650
Data type Table
Row count 10150
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Lake water quality, trends, 2011 - 2020

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Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

440
1
Added
11 Aug 2022

This dataset was first added to MfE Data Service on 11 Aug 2022.

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency. Dataset used to develop the "Lake water quality" indicator (available at www.stats.govt.nz/indicators/lake-water-quality).

We report on eight biological, chemical, and physical lake water quality attributes based on measurements made at monitored lake sites: trophic level index (TLI), chlorophyll-a, E. coli, total phosphorus, total nitrogen, ammoniacal nitrogen, nitrate-nitrogen, and clarity.

For selected attributes we report trends based on measurements made at monitoring sites over a 10-year period (2011–2020).

High concentrations of the measured biological and chemical attributes or low clarity indicates poor habitats for some species of animals and plants, risks for human recreation, potential toxic effects on aquatic life, and poor overall lake health.

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. Summary report available at environment.govt.nz/publications/environment-aotea....

Table ID 109651
Data type Table
Row count 6217
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land cover change, 1996–2012

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

7607
42
Added
16 Apr 2018

This dataset was first added to MfE Data Service on 16 Apr 2018.

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 of 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 measure reports on land cover by class, regional council area, and change over time in hectares and percentage.

For more information on the Landcover Database please refer to: lris.scinfo.org.nz/layer/48423-lcdb-v41-land-cover...

Table ID 95350
Data type Table
Row count 4145
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land cover, 1996 to 2018

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Creative Commons Attribution 4.0 International

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You must attribute the creator in your own works.

3329
58
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Manaaki Whenua - Landcare Research

[Main dataset and further metadata can be found at lris.scinfo.org.nz/layer/104400-lcdb-v50-land-cove...]

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Urban land cover" "Exotic land cover" and "Indigenous land cover" indicators [available at www.stats.govt.nz/indicators/urban-land-cover, www.stats.govt.nz/indicators/exotic-land-cover, www.stats.govt.nz/indicators/indigenous-land-cover]

For lcdb50_change

As there are over ~ 1 million rows to this dataset, a 32-bit version of Microsoft Excel __may not fully display/download all rows. A DBMS, statistical or GIS application may be needed to view the entire dataset__.

This indicator measures urban, exotic, and indigenous land cover area in New Zealand from 1996 to 2018.

Urban, exotic, and indigenous land cover are derived from the LAWA (Land Air Water Aotearoa) land categories. Urban land cover includes urban area comprising built-up area /settlement and urban parkland /open space and artificial bare surfaces which includes transport infrastructure and surface mine or dump. Exotic land cover includes exotic forest, exotic scrub/shrubland, exotic grassland and cropping and horticulture. Indigenous land cover includes indigenous forest, indigenous scrub/shrubland, tussock grassland, natural bare/lightly vegetated surfaces, and other herbaceous vegetation. Data is from the New Zealand Land Cover Data Base (LCDB5). We report on urban, exotic, and indigenous land cover area, and net change in urban, exotic, and indigenous land cover area, for New Zealand and by region. We also report on specific urban, exotic, and indigenous land cover classes.

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 105422
Data type Table
Row count 5160760
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land cover, 1996–2012

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

9120
67
Added
16 Apr 2018

This dataset was first added to MfE Data Service on 16 Apr 2018.

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 of 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 measure reports on land cover by class, regional council area, and year.

For more information on the Landcover Database please refer to: lris.scinfo.org.nz/layer/48423-lcdb-v41-land-cover...

Table ID 95348
Data type Table
Row count 3316
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land cover, Area of land cover, 1996, 2001, 2008, and 2012

Licence

Creative Commons Attribution 3.0 New Zealand

You may use this work for commercial purposes.

You must attribute the creator in your own works.

7617
75
Added
28 Sep 2015

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

Land cover describes the extent of vegetation, water bodies, built environment, and bare natural surfaces (eg gravel and rock) across New Zealand. Measuring the composition and changes in land cover can help us better understand the pressures that different land uses are placing on the biodiversity and functioning of ecosystems.

Column headings:
area_ha = area of land cover measured in hectares

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

Table ID 52478
Data type Table
Row count 884
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land fragmentation, 2002 - 2019

Licence

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

2732
13
Added
14 Apr 2021

This dataset was first added to MfE Data Service on 14 Apr 2021.

DATA SOURCE: Manaaki Whenua - Landcare Research

[Technical report available at environment.govt.nz/publications/land-fragmentatio...]

Adapted by Ministry for the Environment and Statistics New Zealand to provide for environmental reporting transparency

Dataset used to develop the "Land fragmentation" indicator [available at www.stats.govt.nz/indicators/land-fragmentation]

This indicator measures changes in total highly productive land (HPL) area and the distribution of this land area across different land parcel size classes, since 2002, with a particular interest in the fragmentation or subdivision of these land parcels. We define HPL by land use capability (LUC), and includes classes 1, 2, and 3 (land highly suitable for growing a range of crops). We assess this fragmentation against two potential impacts: land that cannot be used or is restricted from use as farmland because of its new residential or urban land use (‘land restricted from use as farmland’) and that which may still be able to be used for growing/production (‘land potentially available for use as farmland’).

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. The technical report for this dataset is available at environment.govt.nz/publications/land-fragmentatio...

Table ID 105415
Data type Table
Row count 3120
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Land use - Land cover classes, 1996, 2001, 2008, and 2012

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Creative Commons Attribution 3.0 New Zealand

You may use this work for commercial purposes.

You must attribute the creator in your own works.

12060
276
Added
28 Sep 2015

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

Land use that results in a change from indigenous to exotic cover can cause biodiversity loss and reduce functioning of ecosystems. Using more land for agriculture, forestry, and urbanisation is the main driver reducing indigenous land cover across New Zealand.

Column headings:
area_ha = area of land cover measured in hectares

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

Table ID 52469
Data type Table
Row count 272
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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