Identifying Environmental Hazards
In this lab, you will determine how an invasive species-the zebra and quagga mussel-affects other species in the freshwater lake.
Instructions: You will write a 1-page lab report using the scientific method to answer the following questions:
· Why do you see increases and decreases in the invasive species population?
· What are the implications associated with these alterations to the ecosystem as a whole?
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Years
|
Zebra and Quagga Mussel (density/m2)
|
Phytoplankton (µg/ml)
|
Zooplankton (µg/ml)
|
CladophoraBiomass (g/m2)
|
Foraging Fish (kilotons)
|
Lake Trout (kilotons)
|
|
0
|
100
|
3
|
2
|
10
|
150
|
15
|
|
4
|
1,000
|
2.5
|
1
|
100
|
100
|
10
|
|
7
|
2,500
|
2
|
0.5
|
200
|
80
|
8
|
|
10
|
7,500
|
1.5
|
0.25
|
600
|
50
|
5
|
|
13
|
15,000
|
1
|
0.1
|
700
|
25
|
2.5
|
|
16
|
7,500
|
1.5
|
0.2
|
243
|
40
|
4
|
|
20
|
5,000
|
1.75
|
0.4
|
136
|
60
|