Health Spectrum

marine-Cultural-health-spectrum

The health ratings displayed on this page is an example only, the heath ratings will be updated when monitoring is completed at the end of 2021.

Awa

Overall Health 100%

Rivers play a key role in the health of the marine environment. Sediment and other contaminants flow from rivers which can impact marine ecosystems.

Below are the results of each of the Tohu Whāiti associated with this Tohu Matua. These Tohu Whāiti collectively inform the overall health of this Tohu Matua.

For each Tohu Whāiti we score qualitative and quantitative indicators called Pātai Inenga, we use these score to determine the health of each Tohu Whāiti. The ratings below are on a scale of 0 to 10, with 0 being very weak and 10 being very strong.

Flow

The measurement of flow is very important to determine the load of any contaminent entering the whanga and moana.

QUALITATIVE

Is there satisfactory flow throughout the summer for swimming and bombing?

Health

Trend

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Method for Testing
Using survey tool with whānau.

Method for Scoring
0 = paru.
1-3 not enough water.
4-6 is pretty good most of the time/moderate.
7-9 majority good.
10 Excellent high quality excellent depth.

Flow is an indicator of health for the awa and a good summer flow rate is important because it sustains the entire ecology of the awa, whanga and moana. Also, whilst keeping the excessive algal growth down over summer.

QUANTITATIVE

What is the annual average flow rate and associated standard deviations of the Awa?

Health

Trend

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Method for Testing
Analyse the Flow data derive a score using HBRC data.

Method of Scoring
Kaimātai moana rōpū to determine score.

Flow is an indicator of health for the awa and a good summer flow rate is important because it sustains the entire ecology of the awa, whanga and moana. Also, whilst keeping the excessive algal growth down over summer.

Nitrogen

Dissolved nutrients at elevated levels stimulate algae growth which puts pressure on aquatic biodiversity (ecosystem services/Mauri).

QUALITATIVE

How bad has the nuisance algae been this year in the awa?

Health

Trend

graph

Method for Testing
Survey whānau.

Method of Scoring
0 – thick coverage (100%)
1-3 – Mostly covered (75%)
4-6 – Some cover (50%)
7-9 – Little cover (10%)
10 – No cover (1%)

The presence of too much algae puts whānau off swimming. It also reduces the mahinga kai values.

QUANTITATIVE

How is nitrogen impacting on the Awa and tangaroa?

Health

Trend

graph

Method for Testing
Analyse the Nitrogen concentrations and derive a score based on LAWA data.

Method of Scoring
0 = in worst 25% of sites nationally.
1-3 = in worst 50% of sites nationally.
4-6 = in best 50% of sites.
7-9 in best 50% of sites and trend improving.
10 = in best 25% and trend improving.

At elevated levels the presence stimulates algae growth which puts pressure on aquatic biodiversity and trophic interactions. At extreme levels it may become toxic to sensitive species.

QUANTITATIVE

How is phosphorus impacting on the Awa and tangaroa?

Health

Trend

graph

Method for Testing
Analyse the Phosphorus concentrations and derive a score based on LAWA data.

Method of Scoring
0 = in worst 25% of sites nationally.
1-3 = in worst 50% of sites nationally.
4-6 = in best 50% of sites.
7-9 in best 50% of sites and trend improving.
10 = in best 25% and trend improving.

At elevated levels the presence stimulates algae growth which puts pressure on aquatic biodiversity and trophic interactions. At extreme levels it may become toxic to sensitive species.

E.coil

Water contaminated by human or animal excreta may contain a range of pathogenic disease-causing micro-organisms that may pose a health risk and accumulate in shellfish.

QUALITATIVE

Is this place a good spot for a swim?

Health

Trend

graph

Method for Testing
Using survey tool with whānau.

Method for Scoring
0 paru
1-3 water looks paru.
4-6 water is pretty good most of the time/average pollution.
7-9 majority good.
10 Excellent high quality excellent clarity.

Immersion is an important cultural practice and tradition to connect with your waiu.

QUALITATIVE

Do you or the whānau ever get mauiui swimming, collecting kai, here?

Health

Trend

graph

Method for Testing
Using survey tool with whānau.

Method for Scoring
0, Many whānau mauiui.
1-3, Some whānau mauiui.
4-6, Few whānau mauiui.
7-9, Very rare that whānau get mauiui.
10, Whānau never get mauiui.

Immersion is an important cultural practice and tradition to connect with your waiu. Gathering kaimoana is an important traditional practice which maintains our connection to Tangaroa and sustains the people.

QUANTITATIVE

How has the presence of faecal bacteria (E. coli) affected mana whenua access to the awa and tangaroa?

Health

Trend

graph

Method for Testing
Use the swimability data from the Lawa.

Method for Scoring in Summer
0 = >5% over 540 E.coli/100 mL.
1-3 = >20% over 260 E.coli 100 mL.
4-6 = <5% 540 & < 20% 260 E.coli/100 mL.
7-9 = E.coli median < 50 in summer.
10 = 3 yr swimibility category = green i.e. 95th percentile value E.coli/100 mL 0-260.

Immersion is an important cultural practice and tradition to connect with your waiu.

Sediment

Sediment compared to all other contaminants entering water is known as the master stressor for all aquatic life.

QUALITATIVE

Does the Awa experience extended areas of sediment build up?

Health

Trend

graph

Method for Testing
Using survey tool with whānau.

Method for Scoring
0 = Completely covered
1-3 large coverage area
4-6 moderate coverage
7-9 Not frequently present
10 No sediment deposition

Sediment build up effects mahinga kai species and the health of the awa. Gathering kaimoana is an important traditional practice which maintains our connection to Tangaroa and sustains the people. It is important to gather baseline information to be aware of the changes in habitat in kai gathering areas and document how they have changed over time.

QUANTITATIVE

How is erosion impacting on water clarity in the Awa?

Health

Trend

graph

Method for Test
Use annual river monitoring data from HBRC.

Method of Scoring
Based of the LAWA national ranking system. Kaimātai moana rōpū to determine score.

Sediment build up effects mahinga kai species and the health of the awa. Gathering kaimoana is an important traditional practice which maintains our connection to Tangaroa and sustains the people. It is important to gather baseline information to be aware of the changes in habitat in kai gathering areas and document how they have changed over time.

QUANTITATIVE

How is erosion impacting on the aquatic habitat in the Awa?

Health

Trend

graph

Method for Test
Use annual river monitoring data from HBRC.

Method of Scoring
Based of the LAWA national ranking system. Kaimātai moana rōpū to determine score.

Sediment build up effects mahinga kai species and the health of the awa. Gathering kaimoana is an important traditional practice which maintains our connection to Tangaroa and sustains the people. It is important to gather baseline information to be aware of the changes in habitat in kai gathering areas and document how they have changed over time.

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