Table 6 Results from IHA analyses with time
From: A century of morphological variation in Cyprinidae fishes
Variable | IHA category | Illinois River | Mackinaw River | Salt Creek | Sangamon River | Vermillion River | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Slope | R2 | Slope | R2 | Slope | R2 | Slope | R2 | Slope | R2 | ||
High pulse count | Frequency and duration of pulses | 0.03 | 0.05 | −0.07 | 0.18 | −0.02 | 0.02 | 0.03 | 0.07 | 0.05 | 0.1 |
High pulse duration | −0.02 | 0.01 | 0.15 | 0.06 | 0.14 | 0.09 | 0.07 | 0.04 | −0.01 | 0.01 | |
Low pulse count | 0.16 | 0.19 | 0 | 0 | 0.01 | 0 | 0 | 0 | 0.01 | 0.01 | |
Low pulse duration | 0.04 | 0.07 | −0.05 | 0.01 | −0.1 | 0.01 | −0.62 | 0.08 | −0.19 | 0.09 | |
1-day maximum | Magnitude and duration of annual extremes | 295.2 | 0.15 | −15.08 | 0 | 21.41 | 0 | 129.6 | 0.04 | 81.05 | 0.06 |
1-day minimum | −61.55 | 0.51 | −0.1 | 0.02 | 0.84 | 0.12 | 1.74 | 0.07 | 0.44 | 0.18 | |
30-day maximum | 58.76 | 0.05 | 2.91 | 0 | 21.19 | 0.03 | 58.36 | 0.06 | 17.57 | 0.07 | |
30-day minimum | −65.06 | 0.49 | −0.4 | 0.05 | 1.31 | 0.1 | 0.48 | 0 | 0.75 | 0.13 | |
3-day maximum | 241.7 | 0.14 | −1.38 | 0 | 21.84 | 0 | 122.8 | 0.04 | 65.77 | 0.07 | |
3-day minimum | −63.79 | 0.55 | −0.12 | 0.02 | 0.80 | 0.11 | 1.62 | 0.06 | 0.46 | 0.18 | |
7-day maximum | 168.40 | 0.12 | −0.08 | 0 | 18.83 | 0 | 101.8 | 0.05 | 37.48 | 0.06 | |
7-day minimum | −64.05 | 0.55 | −0.12 | 0.02 | 0.99 | 0.12 | 1.51 | 0.04 | 0.48 | 0.17 | |
90-day maximum | 6.55 | 0.00 | 1.4 | 0 | 13.7 | 0.04 | 33.14 | 0.05 | 10.19 | 0.08 | |
90-day minimum | −51.73 | 0.29 | −0.09 | 0 | 1.73 | 0.01 | 4.17 | 0.02 | 3.02 | 0.06 | |
Baseflow index | 0 | 0.56 | 0 | 0.01 | 0 | 0.03 | 0 | 0.02 | 0 | 0.06 | |
April | Magnitude of monthly conditions | −38.09 | 0.02 | −4.48 | 0.02 | 2.82 | 0 | −1.15 | 0 | 5.77 | 0.03 |
August | −41.95 | 0.17 | 1.29 | 0.03 | 6.62 | 0.03 | −9.85 | 0.01 | 2.21 | 0.02 | |
December | −42.04 | 0.06 | −1.51 | 0.01 | 9.13 | 0.03 | 31.28 | 0.08 | 6.32 | 0.06 | |
February | −39.67 | 0.05 | −3.34 | 0.02 | 3.78 | 0 | 14.22 | 0.01 | 3.02 | 0.01 | |
January | −61.71 | 0.11 | −1.32 | 0 | 0.36 | 0 | 4.07 | 0 | −5.45 | 0.02 | |
July | −11.87 | 0.01 | 2.99 | 0.03 | 4.49 | 0.01 | −1.19 | 0 | 3.07 | 0.02 | |
June | 3.09 | 0.00 | 4.72 | 0.07 | 10.42 | 0.03 | 13.86 | 0.01 | 4.24 | 0.03 | |
March | −18.53 | 0.01 | 1.18 | 0 | 19.43 | 0.06 | 27.55 | 0.04 | 8.99 | 0.07 | |
May | −25.76 | 0.02 | 7.83 | 0.04 | 17.66 | 0.04 | 29.63 | 0.03 | 4.31 | 0.01 | |
November | −51.93 | 0.10 | −0.78 | 0 | 2.28 | 0 | 10.67 | 0.02 | 6.26 | 0.05 | |
October | −52.70 | 0.13 | −1.31 | 0.01 | 4.14 | 0.01 | −0.31 | 0 | 3.48 | 0.05 | |
September | −38.86 | 0.07 | 0.41 | 0 | 5.15 | 0.04 | −12.2 | 0.02 | 1.49 | 0.01 | |
Fall rate | Rate and frequency of water condition changes | −3.67 | 0.18 | 0.07 | 0 | −0.11 | 0 | −0.32 | 0.01 | −0.37 | 0.08 |
Number of reversals | 0.47 | 0.11 | 0.12 | 0.03 | 0.12 | 0.03 | 0.52 | 0.41 | 0.36 | 0.17 | |
Rise rate | 1.98 | 0.05 | −0.54 | 0.02 | −0.13 | 0 | −0.15 | 0 | 0.47 | 0.02 | |
Date of maximum | Timing of annual extreme conditions | 0.47 | 0.02 | 0.4 | 0.02 | 1.07 | 0.07 | −0.06 | 0 | 0.19 | 0 |
Date of minimum | 0.92 | 0.05 | −0.02 | 0 | −0.1 | 0 | 0.43 | 0.02 | −0.08 | 0 | |