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.

Whanga

Overall Health 20%

Estuaries play a key role in the health of the marine environment. Sediment and other contaminants flow from estuaries 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.

Paru: E. coli

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

Do you and the whānau swim here, is the water depth and quality satisfactory throughout the summer for swimming and bombing?

Health

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Method for Testing
Using survey tool with whānau.

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

Immersion is an important cultural practice and tradition to connect with your waiu. Safe swimming environments are very important part of life for mana whenua & their tamariki throughout the summer periods. It is important for whānau to know if their historic swimming sites are impacted by surface water runoff from agriculture/industry, carrying faecal bacterial and other contaminants.

QUANTITATIVE

Is the Whanga a good site for kai gathering, is it safe to collect kai there?

Health

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Method for Testing
Use the score from Mana Moana, Mahinga kai – Wahanga Mātua.

Method for Scoring
0, 0-10% of the overall score of MM Mahinga Kai Wāhanga Matua.
1-3, 10-30% of the overall score of MM Mahinga Kai Wāhanga Matua.
4-6, 40-60% of the overall score of MM Mahinga Kai Wāhanga Matua.
7-9, 70-90% of the overall score of MM Mahinga Kai Wāhanga Matua.
10, 100% of the overall score of MM Mahinga Kai Wāhanga Matua.

Gathering kaimoana is an important traditional practice which maintains our connection to Tangaroa and sustains the people.

QUANTITATIVE

Ika/Pātiki

Health

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Method for Testing
Use the score from Mana Moana, Mahinga Kai, Ika – Wāhanga Whāiti.

Method for Scoring
0, 0-10% of the overall score of MM qualitative Ika wāhanga whāiti.
1-3, 10-30% of the overall score of MM qualitative Ika wāhanga whāiti.
4-6, 40-60% of the overall score of MM qualitative Ika wāhanga whāiti.
7-9, 70-90% of the overall score of MM qualitative Ika wāhanga whāiti.
10, 100% of the overall score of MM qualitative Ika wāhanga whāiti.

Gathering kaimoana is an important traditional practice which maintains our connection to Tangaroa and sustains the people.

QUANTITATIVE

Has the amount faecal contamination negatively impacted on the whanga/Tangaroa?

Health

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Method of 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. Safe swimming environments are very important part of life for mana whenua & their tamariki throughout the summer periods. It is important for Whānau to know if their historic swimming sites are impacted by surface water runoff from agriculture/industry, carrying faecal bacterial and other contaminants.

QUANTITATIVE

What impact has the presence of ficopomatis enigmaticus (Estuarine tube worm) had on the Ahuriri Whanga?

Health

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Method for Testing
Gather research data from HBRC to determine the biomass of the worm.

Method for Scoring
Kaimātai Moana Rōpū to determine methodology for scoring.

Estuarine tube worm is spreading throughout the whanga and it has been mechanically removed from a section of the upper estuary. There is a need to understand the impact on the whanga’s overall ecology and it is important to quantify the estuarine tubeworms distribution and abundance. Also to assess the impact of this exotic species presence; it may be positively impacting on the whanga due to its filter feeding characteristics.

Sediment

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

QUALITATIVE

Does the whanga water always look good and clear enough for swimming – does it ever smell funny or look paru? Does the mud build up and get squishy between your toes?

Health

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Method for Testing
Using survey tool with whānau.

Method for Scoring
0 = paru.
1-3 water is pretty paru.
4-6 water is moderately murky.
7-9 majority of the time its clear/good.
10 Really clean on bottom and excellent clarity.

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

QUANTITATIVE

How much has tangaroa been negatively impacted by sediment entering the moana. What is the degree of muddiness at each of the sites?

Health

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Method of Testing
Utilise current available data to determine the impact of erosion on the whanga.

Method for Scoring
Kaimātai Moana Rōpū to determine methodology for scoring.

We must determine the impact and rate of change in the whanga’s fine silt fraction from erosion. This fine mud displaces more diversity than any other contaminant.

QUANTITATIVE

Does the current level of heavy metals present a risk to Tangaroa and whānau health?

Health

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Method of Test
Utilise the existing data sets to determine level of heavy metals in each Whanga.

Method of Scoring
Kaimātai Moana Rōpū to determine methodology for scoring.

We must determine the impact and rate of change in the whanga’s heavy metal concentration from industry and fertilisers.

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