Table 2.
Characteristics of the observational period for each field campaign at the CL, CW, and GN. Values for the respective parameters are reported as mean ± SD and as a minimum–maximum value range within brackets. Average values and range for temperature and O2 were obtained from CTD measurements, the average flow from AEC measurements. Stream width, depth, and discharge were obtained from cross‐sectional flow transects which were performed at the upstream and downstream end of the reach during periods with stable hydrograph (i.e., no apparent change in flow or water depth over at least 24 h). The sampling duration is defined as the number of hours of continuous measurements since the sampling started.
| Campaign | Site | Starting date | Duration (h) | Temperature (°C) | O2 (% saturation) | O2 (μmol L−1) | Width (m) | Depth (m) | Flow (cm s−1) | Discharge (m3 s−1) |
|---|---|---|---|---|---|---|---|---|---|---|
| Spring | CL |
01 May 2013 14:48:47 |
50.7 | 10.1 ± 1.0 (8.2–13.7) | 95.0 ± 13.4 (77.3–118.6) | 333.3 ± 41.5 (278.5–406.0) | 3.0–3.5 | 0.39 ± 0.09 | 4.3 ± 0.1 | 0.057 |
| CW |
22 Apr 2013 12:27:14 |
54.4 | 11.2 ± 1.6 (9.3–15.0) | 101.0 ± 21.2 (77.8–137.1) | 343.7 ± 60.5 (274.8–443.6) | 5.0–6.0 | 0.35 ± 0.12 | 19.9 ± 0.5 | 0.204 | |
| GN |
04 May 2013 14:40:10 |
52.1 | 12.3 ± 1.6 (9.5–15.7) | 107.3 ± 20.6 (83.9–139.9) | 357.0 ± 62.0 (277.6–450.9) | 3.0–3.5 | 0.40 ± 0.11 | 27.7 ± 0.1 | 0.312 | |
| Summer | CL |
30 Jul 2013 14:57:03 |
49.2 | 17.1 ± 0.4 (16.6–18.5) | 63.0 ± 2.0 (59.3–68.42) | 190.2 ± 5.6 (179.6–205.8) | 3.0–3.5 | 0.39 ± 0.09 | 2.3 ± 0.1 | 0.006 |
| CW |
11 Aug 2013 15:58:22 |
50.5 | 13.3 ± 1.6 (10.7–16.6) | 78.9 ± 27.7 (49.0–130.3) | 257.2 ± 86.1 (156.6–414.2) | 2.5–5.0 | 0.37 ± 0.06 | 7.6 ± 1.4 | 0.035 | |
| GN |
02 Aug 2013 11:41:51 |
54.2 | 16.0 ± 0.8 (14.9–17.4) | 78.9 ± 5.4 (71.6–87.9) | 243.1 ± 16.8 (217.5–273.6) | 3.5–4.0 | 0.37 ± 0.14 | 23.0 ± 0.7 | 0.232 | |
| Autumn | CL |
07 Nov 2013 15:45:00 |
49.1 | 9.9 ± 0.7 (8.9–11.3) | 75.4 ± 0.4 (74.6–79.3) | 266.8 ± 5.4 (258.4–287.1) | 3.0–3.5 | 0.79 ± 0.24 | 14.3 ±0.6 | 0.426 |
| CW |
29 Oct 2013 10:52:01 |
53.8 | 9.7 ± 1.0 (7.5–10.9) | 78.1 ± 7.9 (67.1–92.0) | 277.8 ± 28.8 (234.2–330.0) | 2.5–6.5 | 0.38 ± 0.15 | 12.3 ± 0.2 | 0.030 | |
| GN |
04 Nov 2013 13:10:30 |
51.0 | 9.9 ± 0.5 (8.9–11.22) | 74.0 ± 1.2 (70.9–76.0) | 261.5 ± 6.0 (246.3–272.7) | 4.0–4.5 | 0.49 ± 0.08 | 22.6 ± 3.1 | 0.422 | |
| Winter | CL |
04 Feb 2014 13:17:54 |
9.2 | 6.0 ± 0.1 (5.8–6.1) | 76.4 ± 0.5 (74.1–77.6) | 296.9 ± 2.6 (287.2–302.8) | 3.5–4.0 | 0.76 ± 0.14 | 25.7 ± 1.6 | 0.630 |
| CW |
27 Jan 2014 17:15:42 |
54.6 | 8.5 ± 0.3 (6.8–9.1) | 80.3 ± 2.6 (77.6–90.1) | 295.0 ± 12.7 (278.6–363.7) | 6.0–7.0 | 0.55 ± 0.14 | 46.1 ± 1.1 | 1.123 | |
| GN |
30 Jan 2014 16:46:12 |
47.9 | 7.0 ± 0.3 (6.4–7.6) | 85.7 ± 2.1 (81.6–88.9) | 325.0 ± 9.6 (307.9–337.5) | 3.5–4.5 | 0.52 ± 0.16 | 37.9 ± 0.7 | 0.537 |