Teacher Diary:

24/3/14 - We went down to the stream after school today with my student teacher who helped carry equipment and take pictures for us.  

The day was fine and had been fine for a few days. The area of the stream is shaded by heavy tree foliage on both sides of the bank. We chose an area of the stream where the water was calm and not running quickly. Matua Faenza chose the area closest to the path down. It was narrow and a little more shallow with rocks. For the purposes of our investigation this is called Area A.

Irma H chose an area further up the stream where the foliage was a little more dense and the bank higher and water a little deeper. The reason for this was to see if there would be a difference in the number of aquatic life we found and if the temperature would be noticeably different and would either attract different aquatic life and/ or have more or less aquatic life because of the environment.

The area second area Irma chose is called Area B.

1. The first thing we did was measure the air temperature by holding the thermometer in the air for 2 minutes and then measure and recorded the temperature. We noticed it was darker under the canopy and in Area B the ground was damper.

2. Next we measured the clarity of the water by using the plastic jug to scoop water and pour it into the plastic bag tube- right up to the very top. The sinker was then placed inside the tube and lowered down until we couldn’t see the sinker anymore. We then pulled out the sinker and measure the length of the string on the sinker to measure the depth. The distance would tell us how clear the water was. If the sinker disappeared from view a short length then that would indicate poor clarity in the water, if it was longer, there was good clarity of the water and not as much mud or debris to impair the clarity.

3. We poured the water from the tube into the long tray half way, and then gently put back the rest of the water in the tube, into the stream.  We then put the thermometer in the try water.

4. We took our nets and ran it along the water, careful not to scoop up mud but just wiggle it along the bank and under the foliage a little so we could unsettle any aquatic life living in and among the overhanging vines and branches of the tree in the stream.

5. We then took the nets and put the contents of the net into the tray and water. We repeated this process 2-3 times. We then took out the thermometer and recorded the water temperature.

6. Taking the bug box and bug chart, we put the bug box over the top of the chart and put a little water in each of the compartments in the bug box.

Then identifying some of the aquatic life in the try, we would use the spoon to scoop up the aquatic life and put it where we thought it looked the most like according to the chart.

7. We then counted the aquatic life we had and recorded this. The results are below.

During this time we were excited each time we found something on the chart. Identifying and classifying these aquatic bugs required you pay close attention because the crustaceans were colourless and difficult to see in the water and there were baby snails that looked like black pieces of bark or dirt at first.

8. After we had recorded and classified the aquatic life we could see;  again we forgot to take the PH of the water.

9. We then carefully poured everything back into the stream and cleaned out the trays and net.

10. Looking at our results we can see what aquatic life is present and what it tells us about the health of the water.

Faenza - Area A of the stream                            Irma - Area B of the stream

Date: 24/3/14

Monday

Time: 3:15pm

Degrees

Celsius

Location A

Location: Stream Area A

Degrees

Celsius

Location B

Stream Area B

Air temperature

25

Day is fine and sunny. Close to pathway.

25

Fine day afternoon.

Further away from area A.

Water temperature

18

Water is clear.

18

Water is dark. Lots of foliage.

Clarity of water

103cms

PH 6

102cms

PH 6

Snails

4

Snails

5

Boatman

2

Boatman

8

Worms

1

Worms

0

Mayfly

2

Mayfly

0

Swimmer

0

Swimmer

1

Shrimp

0

Shrimp

4

Beetle

0

Beetle

1

damsels

0

damsels

0

The afternoon was warm and clear. A slight breeze and warm. The water was still and looked dark. The bank was dry.

26/3/14 Day 2 of the Investigation

Faenza - Area A of the stream                            Irma - Area B of the stream

Date: 26/3/14

Wednesday

Time: 8:05am

Degrees

Celsius

Location A

Location: Stream Area A

Degrees

Celsius

Location B

Stream Area B

Air temperature

17

Morning is warm and had rained the night before. Lots of wasps falling into the stream.

17

Damp and warm. Lots of branches in the water and wasps falling into the tray and in the stream.

Water temperature

17

Water is clear.

11

Water is dark and big branches in the water.

Clarity of water

72cms

PH

10cms

PH

Snails

2

Snails

4

Boatman

4

Boatman

7

Worms

0

Worms

0

Mayfly

0

Mayfly

0

Swimmer

0

Swimmer

0

Shrimp

1

Shrimp

3

Beetle

0

Beetle

0

damselfly larvae

7

damselfly larvae

6

We noticed that the aquatic life was much more active at the start of the day compared to when we measured them in the afternoon on Monday.

With the rain the night before and wind, the stream clarity was also far less clear than it had been, especially in Area B. There was visible signs of branches in the water and lots of wasps dropping down into our sample trays. We also had lots of wasps in the stream.

We had more confidence this time when we came down to do the investigation. We had a better idea of what we were looking for and how to complete the process.

28/3/14  Day 3 of Investigation

Faenza - Area A of the stream                            Irma - Area B of the stream

Date: 28/3/14

Wednesday

Time: 8:00

Degrees

Celsius

Location A

Location: Stream Area A

Degrees

Celsius

Location B

Stream Area B

Air temperature

15

Damp grass - so frost this morning which had melted by 8:00am.

14

Damp and cool. No wasps today either in the water or in the stream.

Water temperature

15

Water is clear as it has been over the week.  

15

Water is dark and much like Monday.

Clarity of water

93cms

PH

80cms

PH

Snails

7

Snails

4

Boatman

24

Boatman

21

Worms

0

Worms

0

Mayfly

0

Mayfly

0

Swimmer

0

Swimmer

0

Shrimp

2

Shrimp

3

Beetle

0

Beetle

0

damselfly larvae

5

damselfly larvae

15

Today the stream was more like the first day we saw it. No wasps were around the trees, either dropping from the trees into the stream and on the side of the bank.  

This was the last day we took samples. Again we noted that at either end of the stream we were working at, there were more samples collected than the first day. This will be another variable in our investigation.

We also enjoyed the investigation. We walked away each time, talking about what we had found. We were much more confident each time we went down and got better at identifying and classifying the aquatic life that we found.

31/3/14

Our conclusions from our results:

Day 1 results:

The results from the table Day 1 for Faenza:

The results Day 1 show for Irma:

Shrimp, beetle and boatman are present more in Section B of the stream and indicate the water is moderately healthy.

There is a swimmer present and they are sensitive to poor water quality.

Finally there are several snails - which have a high tolerance to poor water quality. But from our sample there are no other aquatic life present in this group.

Overall the quality of the water is not as good as we would like and the higher numbers of moderately tolerant aquatic life, would confirm this. It is not very poor but it is not great either.

Day 2 results:

The results from the table for day 2 show for Matua Faenza:

The result from the table for day 2 show for Irma:

Day 3 results:

The results from the table for day 3 show for Faenza:

The result from the table for day 3 show for Irma: