Table 1 Physico-chemical variables in the Chichiawan Stream in the dry and wet seasons
From: Dietary variation and food selection by mayfly grazers in a subtropical mountain stream
Variables | Dry season | Wet season | Reference |
|---|---|---|---|
Chl a concentration on insect-excluded bricks (mg m−2) | 0.4 to 14.4 | 4.3 to 49.9 | Present study |
Chl a concentration on grazed cobbles (mg m−2) | 1.9 to 53.5 | 6.1 to 182.7 | Present study |
Conductivity (μS cm−1) | 287.0 ± 11.0 | 222.5 ± 1.5 | Present study |
Current velocity (m s−1) | 0.87 ± 0.10 | 1.10 ± 0.05 | Present study |
Discharge (m3 s−1) | 1.84 to 2.30 | 2.58 to 2.96 | Chung et al. ([2008]) |
Dissolved inorganic nitrogen (DIN, mg L−1) | 1.81 ± 1.61 | 1.57 ± 0.85 | Lin et al. ([2006]) |
Substrate type | Pebbles (42%) | Cobbles (26%), boulders (21%) | Lin et al. ([2006]) |
Total phosphorus (TP, mg L−1) | 0.03 ± 0.02 | 0.02 ± 0.02 | Lin et al. ([2006]) |
Water temperature (°C) | 9.1 ± 0.4 | 18.8 ± 0.8 | Present study |