River water quality binomial trend direction statistics xlsx

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Creative Commons Attribution 3.0 New Zealand

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461
130
Added
07 Oct 2015

This item was first added to MfE Data Service on 07 Oct 2015

Document ID11441
File nameriver-water-quality-binomial-trend-direction-statistics-xlsx.xlsx
TypeXLSX
Size12.2 KB

Annual national electricity generation, total and hydrogeneration, 1974-2013

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Creative Commons Attribution 3.0 New Zealand

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4307
19
Added
29 Sep 2015

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

Hydroelectricity is a renewable source of electricity. It makes an important contribution to New Zealand’s energy supply and economy.

This dataset relates to the "Contribution of hydroelectricity to total electricity generation" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52542
Data type Table
Row count 80
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Stream bed sedimentation - observed cover at fish monitoring sites

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Creative Commons Attribution 3.0 New Zealand

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3441
25
Added
29 Sep 2015

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

Fine sediment is the collective term for inorganic particles smaller than 2mm that are deposited on the beds of rivers and streams. Urban development, agriculture, and plantation forestry around waterways can increase the amount of sediment entering river systems. Sediment can clog the spaces between pebbles used by aquatic insects and fish, and degrade food sources and sites used for egg laying. Excessive sedimentation can also affect the suitability of rivers and streams for recreation.

Stream bed sediment observations are visual estimates of the proportion of the river bed covered by fine sediment. This information was collected during fish surveys, and stored in the Freshwater Fish database managed by NIWA. Observed in-stream sediment values for 10,025 sites are provided, dating from 1990 to 2011 in order to represent contemporary cover. The exception to this date range is the Fiordland area where all available information (1970 to 2011) was used to fill a representation gap.

This dataset relates to the "Stream bed sedimentation" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52539
Data type Table
Row count 40928
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Nitrogen leaching trend statistics xlsx

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Creative Commons Attribution 3.0 New Zealand

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427
134
Added
07 Oct 2015

This item was first added to MfE Data Service on 07 Oct 2015

Document ID11459
File namenitrogen-leaching-trend-statistics-xlsx.xlsx
TypeXLSX
Size12.4 KB

Hydrological indices for national environmental reporting

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Creative Commons Attribution 3.0 New Zealand

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563
141
Added
07 Oct 2015

This item was first added to MfE Data Service on 07 Oct 2015

39
Document ID11463
File namehydrological-indices-for-national-environmental-reporting.pdf
TypePDF
Size3.93 MB

Natural river flow statistics, predicted for all river reaches

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Creative Commons Attribution 3.0 New Zealand

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6537
257
Added
29 Sep 2015

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

River flow is the quantity of water passing a point over a certain time. Each river or stream has its own natural flow characteristics, such as peak flows following rain or high spring flows from snow melt. 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.

This dataset relates to the "The geographic pattern of river flows" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52536
Data type Table
Row count 570579
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Marine Trophic Index based on research trawl surveys of the Chatham Rise

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Creative Commons Attribution 3.0 New Zealand

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282
14
Added
07 Oct 2015

This item was first added to MfE Data Service on 07 Oct 2015

26
Document ID11465
File namemarine-trophic-index-based-on-research-trawl-surveys-of-the-chatham-rise.pdf
TypePDF
Size948 KB

Ocean colour satellite observations

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Creative Commons Attribution 3.0 New Zealand

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330
18
Added
07 Oct 2015

This item was first added to MfE Data Service on 07 Oct 2015

59
Document ID11466
File nameocean-colour-satellite-observations.pdf
TypePDF
Size24.5 MB

Southern annular mode (1887–2014)

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Creative Commons Attribution 3.0 New Zealand

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3821
30
Added
01 Oct 2015

This dataset was first added to MfE Data Service on 01 Oct 2015.

The Southern Annular Mode (SAM) is an index that describes climate variation around the South Pole and Antarctica, as far north as New Zealand. It indicates short-term climate variations that can influence New Zealand’s climate. Such climate variations can impact on our environment, industries, and recreational activities.
The variation is caused by the movement of a low-pressure belt that generates westerly winds. During a negative phase, the low pressure belt moves north, towards the equator. In New Zealand, this can cause increased westerly winds, unsettled weather, and storm activity over most of the country. Over the southern oceans, there are relatively less westerly winds and less storm activity.
During a positive phase, the low pressure belt moves south towards Antarctica. In New Zealand, this can cause relatively light winds and more settled weather. Over the southern oceans, there is increased westerly winds and storm activity.
This dataset relates to the "Southern annular mode" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52592
Data type Table
Row count 128
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Ski field operating days (2003–14)

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Creative Commons Attribution 3.0 New Zealand

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3599
27
Added
01 Oct 2015

This dataset was first added to MfE Data Service on 01 Oct 2015.

The climate can affect ski-field operations. Warm temperatures can result in less snow or shorter ski seasons. Extreme weather events such as storms can close fields. Monitoring the season length of ski fields and the percentage of days they are closed may indicate the extent of any effects of climate change. We assessed the season length and percentage of days closed for three South Island ski fields from 2003 to 2014.
This dataset relates to the "Ski-field operating days" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52571
Data type Table
Row count 180
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
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