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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
  1. Physico-chemical variables (mean ± standard deviation, range, or proportion) in the Chichiawan Stream in the dry and wet seasons before the occurrence of typhoons.