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RESULTS

Part A 
 
Newton Moore Senior High School

i)School Breeding Site, Environmental Centre

The science department has two areas involved with the breeding of the Western Pygmy Perch and the Western Minnow. One location is in classrooms and the other outside in the environmental centre. It is important to have more than one location in case one population becomes contaminated or one system fails.
Five 250L tanks house a population of about 70 Western Pygmy Perch in three separate laboratories.
One below ground pond constructed with limestone blocks, sealed and covered with a pergola with shade cloth is the most successful breeding site. It is located in the Environmental centre alongside the science laboratories. This pond  is aerated with a submersible pump and apart from the occasional top up with water,  no maintenance or feeding is required. Bird netting around the side protects from birds. Twenty litre tubs support aquarium strap weed. The soil for these tubs came from the wetlands and included non biting midgie larvae, a source of food for the perch. The algae, cladophera also thrives and breaks down to add to the nutrients in the sediments. These thriving aquatic plants provide an excellent habitat for the juvenile fish and allows provide shelter for  them to escape being eaten by the mature Western Pygmy Perch.
The Western Minnow is not so easily kept in aquariums as they are vigorous jumpers and care must be taken to seal off the top of the tank.
In 2006 students set up a breeding pond alongside the Western Pygmy Perch’s limestone pond. It  is set up the same as the perch’s pond  with a submersible pump and tubs of plants. It however must be tightly covered with fish netting to stop the fish jumping out.

4 2
Students preparing the site for the Western Minnow pond. Students placing pond in position.

 

6 8
Fish Netting Joined to cover the pond. Adding the Western Minnow to the pond. Power is connected to the pole from the adjoining pond to the left. 

 

 

11
Two tubs fixed in the soil and covered with shade cloth provide a live food source of protozoans and  daphnia  for the fish in classrooms.

All of the ponds are to be moved in May as the Environmental centre will be relocated to a new site on the school grounds.

 

Part B

ii)School Breeding Site, Koopoolang Pond

Water Testing Results of the  Breeding Pond, Koopoolang Pond

2005

Water Test

Feb

March

April

May

June

July

August

Sept

Oct

Nov

Nitrate
 mg/L

Dry

Dry

0.04

0.42

0.37

0.1408

0

0

0.176

0.33

Phosphate mg/L

Dry

Dry

0.18

0.18

0.17

0.12

0

0

0.16

0.16

Ammonia mg/L

Dry

Dry

0

0.19

0

0

0.06

0

0.36

0.024

pH

Dry

Dry

7.3

7.2

7.5

7.3

7.26

7.93

7.8

7.73

Conductivityms/cm3

Dry

Dry

0.07

0.07

0.16

0.10

0.57

0.55

0.50

0.56

Turbidity

Dry

Dry

<10

<10

<10

<10

<10

<10

<10

<10

Temperature water 0c

Dry

Dry

16.5

16

12.7

14.3

11.3

13

15

21

2006

Water Test

Feb

March

April

May

June

July

August

Sept

Oct

Nov

Nitratemg/L

0.066

0.105

0.25

0.28

0.748

0.44

1.056

0.748

0.61

0.48

Phosphate mg/L

0.200

0.09

0.18

0.18

0.86

0.18

0.08

0.04

0.08

0.24

Ammonia mg/L

0.050

0.192

0

0

0.12

0.00

0.00

0.00

0

0.024

pH

6.750

6.92

7.50

7.06

6.10

7.15

6.29

7.07

7.4

6.5

Conductivity ms/cm3

0.200

1.04

1.08

0.07

1.01

0.08

0.08

0.10

0.16

0.28

Turbidity

<10

10

10

<10

<10

<10

<10

<10

<10

15

Temperature water 0c

22.2

18.4

16.8

14

10

12.7

14.1

13.7

15

19

2007

Water Test

Feb

March

April

May

June

July

August

Sept

Oct

Nov

Nitratemg/L

0.060

0.013

0.242

-

-

-

-

-

-

-

Phosphate mg/L

0.220

0.220

0.240

-

-

-

-

-

-

-

Ammonia mg/L

0.140

0.288

0.756

-

-

-

-

-

-

-

pH

6.80

6.43

7.47

-

-

-

-

-

-

-

Conductivity ms/cm3

1.09

1.04

0.02

-

-

-

-

-

-

-

Turbidity

30

40

< 10

-

-

-

-

-

-

-

Temperature water 0c

19

18

16.8

-

-

-

-

-

-

-

 

koopoolang1
Sampling for macro invertebrates in Koopoolang Pond 2005

Macro invertebrate Sampling in Water sites in Bunbury City

KEY

Water Condition Index

Water body  Quality rating

19 or less

Poor

20 - 34

Fair

35 - 49

good

50 or more

Excellent

Site: Koopoolang Pond

2005

MONTH

Water Condition Index

Water body  Quality rating

February

Dry

Dry

March

Dry

Dry

April

20 - 34

Fair 

May

35 - 49

Good

June

20 - 34

Fair 

July

19 or less

Poor  (WPperch)

August

20 - 34

Fair 

September

20 - 34

Fair 

October

35 - 49

Good

November

35 - 49

Good

December

-

-

2006

MONTH

Water Condition Index

Water body  Quality rating

February

35 - 49

Good (WPperch)

March

19 or less

Poor  (WPperch)

April

20 - 34

Fair  (WPperch)

May

20 - 34

Fair  (WPperch)

June

19 or less

Poor  (WPperch)

July

19 or less

Poor  (WPperch)

August

20 - 34

Fair  (WPperch)

September

20 - 34

Fair  (WPperch)

October

19 or less

Poor  (WPperch)

November

35 - 49

Good (WPperch)

December

35 - 49

Good (WPperch)

2007

MONTH

Water Condition Index

Water body  Quality rating

February

35 - 49

Good (WPperch)

March

20 - 34

Fair  (WPperch)

April

20 - 34

Fair  (WPperch)

May

-

-

June

-

-

July

-

-

August

-

-

September

-

-

October

-

-

November

-

-

December

-

-

Water Index Rating for Test Sites

Star Rating Guide:

×         Wetlands is in urgent need of assistance to restore habitat and reduce  nutrient input

××      Wetland needs some assistance. Continue restoration

×××  Wetland is in reasonable condition now. Keep monitoring it

××××Wetland is healthy and diverse. Protect it

School Breeding Pond:  Koopoolang Pond

MONTH

Water Index Rating

2005

2006

2007

February

Dry

×××     WP perch

××        WP perch

March

Dry

×××    WP perch

×××     WP perch

April

××

×××    WP perch

×××     WP perch

May

×××

××       WP perch

---

June

×××

××       WP perch

-

July

×××    WP perch

×××    WP perch

-

August

××

××       WP perch

-

September

×××

×××    WP perch

-

October

×××

××       WP perch

-

November

×××

×××    WP perch

-

December

×××

×××    WP perch

-

 

Releasing Western Pygmy Perch and Western Minnow into Koopoolang Pond in 2006, just above the submerged concrete tanks.   

Conclusion

Unfortunately, domestic demand for ground water is very high and the summer water level has been low for 2006 and 2007. The presence of the two concrete tanks detailed in the 2005 Report, have prevented the pond from drying up. We have also had to add bore water to the pond to maintain the level just above ground level. We obtained  a “License to Take Water” from the Department of Environment to draw water to do this. Unfortunately the iron and manganese levels in the bore water, is above the recommended level for aquaculture.
Students are in the process of constructing a settling tank to remove the iron. Bore water will be diverted to this tank before it is gravity fed into the pond. Work is due for completion by the end of May 2007.
When the addition of bore water is kept to a minimum, chemical and biological analysis of the pond indicates the water  quality is within the recommended limits for a healthy waterway able to support the Western Minnow and the Western Pygmy Perch. The plants in and around the pond are becoming more established.
Western Pygmy Perch and Western Minnow have been released from the original breeding stock in the environmental centre in 2005, 2006 and 2007.
Each monthly sampling from July 2006 to April 2007 has shown Western Pygmy Perch, including newly hatched juveniles. The Western Minnow has not yet been recaptured. More Western Minnow will be released in May when the ponds are emptied and moved due to the school’s building program.

 

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