Survival strategies of phytoplankton functional groups to environmental factors in a drinking water reservoir, central China

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Table 2

Mean, interval (minimum and maximum) and standard deviation values of limnological variables (n = 12) at the five sampling stations in Zhushuqiao reservior.

	S1			S2			S3

	Mean	Interval	SD	Mean	Interval	SD	Mean	Interval	SD
TN (mg · L⁻¹)	2.06	0.59–3.94	1.03	1.72	0.09–3.65	1.01	1.68	0.08–3.68	1.04
TP (mg · L⁻¹)	0.05	0.02–0.25	0.05	0.04	0.01–0.11	0.03	0.04	0.01–0.12	0.03
PO₄ (mg · L⁻¹)	0.01	0–0.02	0.01	0.01	0–0.01	0.00	0.01	0.00–0.02	0.00
NH₄-N (mg · L⁻¹)	0.03	0–0.10	0.02	0.03	0–0.10	0.03	0.03	0–0.09	0.03
NO₃-N (mg · L⁻¹)	0.37	0.01–0.76	0.23	0.32	0.01–0.65	0.18	0.38	0.06–0.76	0.18
NO₂-N (mg · L⁻¹)	0.03	0–0.13	0.04	0.03	0–0.13	0.04	0.03	0–0.17	0.05
Chl.a (μg · L⁻¹)	18.09	2.06–48.04	15.05	20.90	4.17–65.90	16.50	16.08	2.65–46.30	11.82
WT (°C)	22.20	13.40–32.10	5.84	22.31	13.30–32.90	5.61	21.26	12.60–33.40	6.25
DO (mg · L⁻¹)	2.76	1.85–3.88	0.59	2.48	0.61–3.8	0.75	2.99	1.12–14.07	1.99
pH	7.36	6.61–9.05	0.62	7.61	6.54–9.48	0.90	7.62	6.58–9.23	0.80
Illumination intensity	1123.81	0–14630	2735.42	1290.68	0–16740	3276.31	1007.55	0–12110	2531.98
SD (m)	1.71	0.9–2.2	0.46	1.63	0.70–2.40	0.54	2.31	1.70–2.70	0.36

	S4			S5

	Mean	Interval	SD	Mean	Interval	SD

TN (mg · L⁻¹)	1.65	0.26–3.89	1.15	1.71	0.05–4.05	1.07
TP (mg · L⁻¹)	0.04	0.01–0.14	0.03	0.04	0–0.15	0.03
PO₄ (mg · L⁻¹)	0.01	0–0.02	0.00	0.01	0–0.02	0.00
NH₄-N (mg · L⁻¹)	0.03	0–0.07	0.02	0.03	0.01–0.07	0.01
NO₃-N (mg · L⁻¹)	0.39	0.10–0.72	0.15	0.38	0.10–0.55	0.12
NO₂-N (mg · L⁻¹)	0.03	0–0.16	0.05	0.04	0–0.20	0.06
Chl.a (μg · L⁻¹)	19.74	3–45.75	12.91	18.88	1.78–44.50	12.35
WT (°C)	20.77	12.8–33.3	5.70	20.55	12.8–33.70	5.74
DO (mg · L⁻¹)	2.65	0.96–4.49	0.85	2.51	0.88–4.13	0.86
pH	7.68	6.57–9.872	0.86	7.43	6.17–9.232	0.67
Illumination intensity (Lux)	1029.76	0–21500	3708.11	467.02	0–6100.00	1340.41
SD (m)	2.15	1.70–2.8	0.44	2.49	1.70–3.20	0.59

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