Papatoetoe West School
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Experiencing Marine Reserves (EMR)
Our year 5 and 6 students regularly take part in a marine reserve programme where students investigate ways of supporting marine conservation. Our EMR volunteers visit each of our classes and teach us about the local history of our waterways and share with us how we can make changes for the better. |
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Water TestingWith our EMR volunteers, we headed down to our local stream at Kohuora Park and conducted several special tests to evaluate our water quality. |
ClarityWe measured the clarity of the water in our local streams. We used a special transparent tube to make our measurements. Unfortunately, we weren't very happy with what we found. Our average clarity was about 25cm. |
pH level testingWe used special (harmless) chemicals to test the pH level of our water. The chemical would change the colour of the water when we added this to it. This would give us a pH level. We were happy to discover that the pH level of our stream was quite safe. |
Macro-invertebratesThis test involved taking a sample of water and looking at the creatures that live within the sample area. We matched these against an identification chart and found that they each had a special number allocated to them. Animals with low numbers could survive in more polluted environments, and animals with higher numbers thrived in cleaner habitats. We were hoping to find a diverse range of these animals but discovered that the animals in our stream were all low scoring. This means that only the animals that enjoy a more polluted environment lived in our stream. |
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