Creative Commons Attribution 4.0 International
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This dataset was first added to MfE Data Service on 06 Apr 2020.
The most recent assessment of ecological condition of 295 lakes in New Zealand assessed on at least one occasion between 1991 and 2019 was measured using the lake submerged plant index (LakeSPI).
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 | 104564 |
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Data type | Table |
Row count | 295 |
Services | Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed |
Creative Commons Attribution-NonCommercial 4.0 International
You may not use this work for commercial purposes.
You must attribute the creator in your own works.
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 |
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Data type | Table |
Row count | 248 |
Services | Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21931 |
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File name | lake-water-quality-10-year-trends-raw-data.csv |
Type | CSV |
Size | 167 KB |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21928 |
---|---|
File name | lake-water-quality-10-year-trends-raw-data.csv |
Type | CSV |
Size | 167 KB |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21932 |
---|---|
File name | lake-water-quality-20-year-trends-raw-data.csv |
Type | CSV |
Size | 47.4 KB |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21929 |
---|---|
File name | lake-water-quality-20-year-trends-raw-data.csv |
Type | CSV |
Size | 47.4 KB |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21933 |
---|---|
File name | lake-water-quality-28-year-trends-raw-data.csv |
Type | CSV |
Size | 23.8 KB |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21930 |
---|---|
File name | lake-water-quality-28-year-trends-raw-data.csv |
Type | CSV |
Size | 23.8 KB |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This dataset was first added to MfE Data Service on 16 Apr 2019.
This dataset contains ten lake water quality variables based on measurements made at monitored lake sites: chlorophyll-a, nitrate-nitrogen, total nitrogen, ammoniacal nitrogen, dissolved reactive phosphorus, total phosphorus, Escherichia coli, water clarity, and lake trophic level index (TLI3 and TLI4). This dataset includes: - Median values for the period 2013 to 2017 - For selected indicators, how these values compare to the National Objectives Framework (NOF) (MfE, 2017) bands related to ecosystem health When nitrogen and phosphorus accumulate above certain concentrations in lakes (referred to as ‘nutrient enrichment’), they can stimulate excessive growth of algae and cyanobacteria. Chlorophyll-a is a measure of the phytoplankton (algae) biomass. The lake trophic level index (TLI) indicates the health of a lake based on concentrations of three variables:
· total nitrogen
· total phosphorus
· chlorophyll-a.
Water clarity is a measure of underwater visibility. Lakes with poor clarity and TLI are poor habitats for some species of animals and plants, and they may not be suitable for recreation. Ammoniacal nitrogen can be toxic to aquatic life if concentrations are high enough.
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: www.mfe.govt.nz/publications/fresh-water/water-qua....
Table ID | 99872 |
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Data type | Table |
Row count | 454 |
Services | Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed |
Creative Commons Attribution 4.0 International
You may use this work for commercial purposes.
You must attribute the creator in your own works.
This item was first added to MfE Data Service on 16 Apr 2019
Document ID | 21925 |
---|---|
File name | lake-water-quality-state-20132017-data-quality.pdf |
Type | |
Size | 504 KB |