Lake Submerged Plant Index, 1991–2016

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Creative Commons Attribution-NonCommercial 4.0 International

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5456
23
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Submerged plants are good indicators of the ecological quality of lakes. Because they are attached to the bed of lakes, submerged plants are easy to observe and identify, and they are unable to move away from environmental changes. The plant species found within lakes can tell us about their level of habitat degradation and exotic weed invasion.

The file contains Lake submerged plant index scores for each sampling occasion.

Table ID 53606
Data type Table
Row count 248
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Predicted river water quality, 2009–13

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Creative Commons Attribution 3.0 New Zealand

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6665
137
Added
24 Apr 2017

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

River water quality is valued for many reasons including ecological function and habitat, recreational value, its role in supporting people and industry, and its cultural significance. Nutrients such as nitrogen and phosphorus are essential for plant growth, however too much in rivers can lead to excessive growth of river algae, which can degrade habitat.

High concentrations of nitrogen in the form of ammoniacal nitrogen and nitrate-nitrogen can be toxic to fish and other aquatic animals, and nitrate-nitrogen can be toxic to humans. Water clarity is a measure of underwater visibility, and affects habitat of aquatic life such as fish and birds, and can also impact on aesthetic values and recreational use of rivers and streams. Escherichia coli (E.coli) can indicate the presence of pathogens (disease-causing organisms) from animal or human faeces, which can cause illness.

File contains the model outputs for river water quality indicators as medians for each river segment in New Zealand’s digital river network.

Table ID 53601
Data type Table
Row count 593444
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Predicted E.coli concentrations in rivers, 1990–2013

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Creative Commons Attribution 3.0 New Zealand

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4987
28
Added
24 Apr 2017

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

River water quality is valued for many reasons including recreational value.
Escherichia coli (E.coli) can indicate the presence of pathogens (disease-causing organisms) from animal or human faeces, which can cause illness.

File contains the model outputs for E.coli concentrations as four different statistics for each river segment in New Zealand’s digital river network.

Table ID 53603
Data type Table
Row count 570577
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Accumulated freshwater takes, 2013–14

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Creative Commons Attribution 3.0 New Zealand

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5262
53
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Flow is the volume of water passing a point over a certain time, and provides information about the availability of water for people and the environment. Overall, this affects how much water is available for irrigation, drinking water, hydroelectricity generation, and recreational activities. River flows also influence a waterway’s physical form, habitat, and ecological processes like migration, spawning, and food supply for aquatic life.

The file provides the estimated impact of upstream consents on the modelled median flow of a particular reach in the digital river network. This is calculated by upstream total consented takes by median flow.

Table ID 53614
Data type Table
Row count 692989
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

He Pātaka Wai Ora Report_datasheet raw water quality

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Creative Commons Attribution 3.0 New Zealand

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5156
8
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Table ID 53611
Data type Table
Row count 796
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Predicted capture of 11 fish species, 1977–2015

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Creative Commons Attribution 3.0 New Zealand

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5304
57
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 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 of 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.

File contains predicted capture, including upper and lower confidence intervals for 11 fish species, including indices of native fish, exotic fish, and all fish, over the period 1977 ̶ 2015.

Table ID 53608
Data type Table
Row count 39
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Conservation status of native freshwater fish and invertebrates, 2013

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Creative Commons Attribution 3.0 New Zealand

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6614
59
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

New Zealand has a diverse range of freshwater species. Many of these species are endemic to (only occur in, or only breed in) New Zealand. Freshwater fish and invertebrates are indicator species for the state of our freshwater environment. A decreasing population can indicate that the ecosystem is degrading.

This measure reports on the conservation status of New Zealand's indigenous freshwater fish and invertebrate species, including the number of species that have had a genuine change in conservation status between two monitoring periods (2009–13 and 2005–13). A change in a species’ conservation status reflects a change in its risk of extinction.

Table ID 53612
Data type Table
Row count 723
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Primary use and source of consented freshwater takes, 2013–14

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Creative Commons Attribution 3.0 New Zealand

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6045
111
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Regional councils issue resource consents for the taking of fresh water for various purposes, including irrigation, drinking, hydroelectricity, and industry. Water can be taken from surface water or groundwater.

The file provides the primary source and primary use of the water take for each consented take.

Table ID 53613
Data type Table
Row count 16154
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Livestock numbers, 1994–2015

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Creative Commons Attribution 3.0 New Zealand

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5354
101
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

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.

File contains total livestock numbers by region for each year over the period 1994–2015

Table ID 53616
Data type Table
Row count 90
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Asset value of water resources used for hydroelectric generation, 2007–15

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Creative Commons Attribution 3.0 New Zealand

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6439
9
Added
25 Apr 2017

This dataset was first added to MfE Data Service on 25 Apr 2017.

Water is an important source of energy that contributes to New Zealand’s energy supply and the economy. As the main source of renewable energy in New Zealand, the use of water supports the production of the electricity industry. Tracking the value of this water as a natural resource – along with land form, slope, and elevation, which all help to generate hydroelectricity – shows the economic benefits derived from water use for current and future generations. Changes in flow regimes and climate can affect these values.

We report on the value of water resources used to generate hydroelectricity. This value includes both the returns received from current use (resource rent), and expected benefits from future use (the asset value).

Table ID 53615
Data type Table
Row count 54
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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