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)

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