Find which species was more numerous
Explain the three elements necessary to spread infection
April 14, 2020Solute showing highest rate of diffusion
April 14, 2020Find which species was more numerous
Table1. Mark-recapture Largemouth bass data from the Des Plaines River.
|
Size (cm) |
Number of individuals day 1 |
Number of individuals day 2 |
Population density estimate |
|
|
Unmarked |
Marked |
|||
|
< 10 |
73 |
64 |
22 |
570 |
|
10-20 |
35 |
28 |
13 |
|
|
20-30 |
20 |
22 |
18 |
|
|
> 30 |
6 |
4 |
2 |
|
|
Total |
134 |
118 |
55 |
|
Using these data, estimate the density (number/hectare) of each size class plus the overall density. [Note: 1 hectare = 10,000 m2.]
Bluntnose minnow
Complete the following table
Table 2. Mark-recapture Bluntnose minnow data from the Des Plaines River.
|
Size (cm) |
Number of individuals day 1 |
Number of individuals day 2 |
Population density estimate |
|
|
Unmarked |
Marked |
|||
|
< 3 |
252 |
174 |
63 |
|
|
3-6 |
196 |
145 |
54 |
|
|
6-9 |
177 |
132 |
58 |
|
|
> 9 |
34 |
26 |
11 |
|
|
Total |
659 |
477 |
186 |
|
1. Which species was more numerous is the Des Plaines River? How much more abundant?
2. Based on the data, which species grows to a larger size?
3. Which species do you think is the prey and which is the predator? Why?
