Skip to main content

Table 1 Environmental variable results from the habitat surveys, water quality monitoring, and temperature loggers in Indian Mill Creek (IMC), Michigan, USA (2017) (mean ± standard deviation). SSC suspended sediment concentration, BC Brandywine Creek, WAD Walker Avenue Ditch

From: Relating environmental variables with aquatic community structure in an agricultural/urban coldwater stream

Site Riffles (% area) Pools (% area) Riparian Scr. (P 51) % Fine Substrate Wood Deb. (per 100 m) Velocity
(m s-1)
SSC (ppm) Bedload
(kg day-1)
Slope
(m km-1)
Avg. Temp. (°C) Temp. Fluct. (°C) Hours >19 °C Max. Temp. (°C)
IMC1 0 0 23 58 0 0.17 ± 0.08 12.8 ± 9.6 28 ± 66 5.78 - - - -
IMC2 4 9 12 71 0 0.16 ± 0.04 2.6 ± 1.5 27 ± 43 3.54 - - - -
IMC3 0 48 27 69 9 0.15 ± 0.07 4.4 ± 3.4 53 ± 108 2.23 - - - -
IMC4 19 47 42 60 22 0.54 ± 0.13 7.8 ± 7.2 124 ± 99 4.26 18.3 ± 1.0 4.8 547 21.4
IMC5 35 17 31 23 30 0.27 ± 0.07 5.4 ± 5.3 8 ± 9 4.91 18.2 ± 1.0 5.7 549 22.5
IMC6 46 14 43 20 14 0.48 ± 0.18 4.9 ± 5.0 200 ± 432 5.02 17.7 ± 1.0 4.5 295 21.3
IMC7 21 30 31 33 16 0.55 ± 0.05 9.1 ± 11.8 2426 ± 2984 4.26 16.2 ± 0.7 5.3 45 21.0
BC 21 50 35 86 29 0.12 ± 0.08 3.3 ± 2.1 74 ± 146 3.36 - - - -
WAD 0 65 29 90 1 0.05 ± 0.10 2.7 ± 1.2 19 ± 22 9.22 - - - -