Factors Influencing Aggression Levels in Root Vole Populations under the Effect of Food Supply and Predation
Table 1
-test of Kruskal-Wallis for aggression levels of root vole populations under different treatments.
Treatment
+P, −F
−P, +F
−P, −F
+P, −F
Experiment data
Rank
Experiment data
Rank
Experiment data
Rank
Experiment data
Rank
Aggression accounts
3.00
4.00
32.00
41.00
65.00
49.00
36.00
45.00
25.00
37.50
53.00
47.00
60.00
48.00
35.00
43.50
20.00
30.50
13.00
19.50
78.00
51.00
74.00
50.00
2.00
3.00
25.00
37.50
25.00
37.50
33.00
42.00
5.00
6.00
11.00
16.00
24.00
35.00
37.00
46.00
1.00
2.00
35.00
43.50
21.00
32.00
13.00
19.50
10.00
14.00
22.00
33.00
8.00
10.50
14.00
21.50
23.00
34.00
7.00
8.50
16.00
25.50
26.00
40.00
6.00
7.00
16.00
25.50
25.00
37.50
7.00
8.50
90.00
52.00
15.00
23.50
10.00
14.00
12.00
17.50
0.00
1.00
10.00
14.00
12.00
17.50
18.00
28.00
4.00
5.00
19.00
29.00
8.00
10.50
20.00
30.50
9.00
12.00
17.00
27.00
15.00
23.50
14.00
21.50
=
323.00
469.00
359.50
220.00
is the sum of sample rank under i treatment. −P, +F: no predator, food-supplemented enclosures. +P, +F: predator access, food-supplemented enclosures. −P, −F: no predator, nonsupplemented enclosures. +P, −F: predator access, nonsupplemented enclosures, the control.
