Present |
Absent |
||||||||
| Variable | Mean |
Std.dev. |
N |
Mean |
Std.dev. |
N |
t-value |
d.f. |
p-value |
| Latitude | 30.6 |
0.3 |
17 |
30.5 |
0.4 |
24 |
0.59 |
39 |
0.55 |
| Longitude | 80.8 |
6.1 |
17 |
81.3 |
13.5 |
24 |
0.16 |
39 |
0.87 |
| Elevation | 171.6 |
112.2 |
17 |
169.7 |
99.4 |
24 |
0.06 |
39 |
0.95 |
| Soil | |||||||||
| Avg. % sand | 80.7 |
6.1 |
17 |
81.5 |
13.5 |
24 |
-0.21 |
39 |
0.83 |
| Avg. % clay | 4.2 |
1.9 |
17 |
4.8 |
4.8 |
24 |
-0.48 |
39 |
0.63 |
| Avg. % silt | 15 |
5.4 |
17 |
13.7 |
9.5 |
24 |
0.52 |
39 |
0.61 |
| Ground cover | |||||||||
| % plant | 72.5 |
16.8 |
17 |
75.7 |
13 |
24 |
-0.67 |
39 |
0.5 |
| % bare | 16.9 |
12 |
17 |
12.2 |
7 |
24 |
1.5 |
39 |
0.81 |
| % litter | 10.7 |
12.2 |
17 |
11.6 |
11.6 |
24 |
-0.23 |
39 |
0.81 |