Home-Range of Squirrels (13 days vs. 25 days)
Data for a male (M) and a female (F) ground squirrel were collected on an 24 x 24 station live-trap grid. The spacing between traps in each column and each row was 12 meters. The data from this CMR method is shown in the table below. Use the data for the first 13 days to diagram the home range for each squirrel. Then find the home range size using the minimum area method and the range length as we did in the demonstration. For the range length, indicate which two points you are using. On a separate sheet of paper, repeat the exercise above using all 25 days worth of data. Compare the calculations using 13 days worth of data versus using all 25 days worth of data. Did the range size and range length change considerably? Would you expect it to? Explain
| Day | Female | Male | Day | Female | Male |
|
1 |
D6 |
T3 |
14 |
D7 |
O1 |
|
2 |
F6 |
V2 |
15 |
D6 |
P6 |
|
3 |
F6 |
S2 |
16 |
D7 |
O6 |
|
4 |
A9 |
S1 |
17 |
B9 |
U2 |
|
5 |
E5 |
S3 |
18 |
D9 |
V2 |
|
6 |
E6 |
P2 |
19 |
A9 |
P11 |
|
7 |
D5 |
O1 |
20 |
A8 |
O4 |
|
8 |
D6 |
S7 |
21 |
A10 |
O6 |
|
9 |
A11 |
Q1 |
22 |
B9 |
S2 |
|
10 |
D7 |
U2 |
23 |
B8 |
V5 |
|
11 |
D10 |
P9 |
24 |
C7 |
V4 |
|
12 |
D2 |
R5 |
25 |
C5 |
O9 |
|
13 |
C6 |
P7 |
Range data for ground squirrels
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