Table 1: Statistical analysis of mean (+/- SE) seasonal habitat use (depth, velocity, substrate, cover) for yearling Rainbow Trout (Oncorhynchus mykiss) and available habitat for Grout and Orwell Brook. Substrate values are categorical numbers based on the Wentworth scale. Values followed by a different letter down a column significantly differ (P< 0.05). RBT1+ = yearling Rainbow Trout, AH = available habitat.
|
Depth (cm) |
Velocity (cm/s) |
Substrate |
% Cover |
| Grout Brook |
|
|
|
|
| RBT 1+ Fall |
28.3±1.2A
|
28.4±2.1AB
|
6.0±0.04A
|
23.0±1.3A
|
| RBT 1+ Summer |
26.1±0.7A
|
26.3±1.0AB
|
5.9±0.02B
|
23.9±0.6A
|
| AH Fall |
15.1±0.5B
|
25.7±1.2B
|
5.9±0.02B
|
5.4±0.4B
|
| AH Summer |
14.5±0.4B
|
22.7±0.7C
|
5.9±0.02B
|
6.1±0.3B
|
| P |
<0.01 |
<0.01 |
<0.01 |
<0.01 |
| F Stat (df) |
146 (2408,3) |
4.47 (2408,3) |
0.37 (2408,3) |
415 (2408,3) |
| Orwell Brook |
|
|
|
|
| RBT 1+ Fall |
37.5±2.5A
|
35.5±5.3B
|
6.2±0.05A
|
25.5±2.2A
|
| RBT 1+ Summer |
24.6±0.7B
|
18.2±0.9C
|
6.1±0.02B
|
20.6±0.6B
|
| AH Fall |
20.5±0.5C
|
50.4±1.9A
|
6.1±0.01B
|
6.6±0.4C
|
| AH Summer |
11.9±0.4D
|
14.9±0.6C
|
6.1±0.02B
|
5.2±0.3C
|
| P |
<0.01 |
<0.01 |
0.02 |
<0.01 |
| F Stat (df) |
154 (1494,3) |
211 (1494,3) |
165 (1494,3) |
310 (1494,3) |