Table 1 Physicochemical factors of overlying water in different seasons.

From: Seasonal changes of prokaryotic microbial community structure in Zhangjiayan Reservoir and its response to environmental factors

Season

Spring

Summer

Autumn

Winter

pH

8.60 ± 0.12a

8.43 ± 0.59a

8.08 ± 0.57b

8.02 ± 0.63b

T (°C)

17.70 ± 5.39b

26.86 ± 2.23a

17.32 ± 1.03b

10.22 ± 0.46c

DO (mg L−1)

6.99 ± 0.35b

9.76 ± 0.81a

6.86 ± 0.76b

5.17 ± 0.52b

TN (mg L−1)

0.89 ± 0.08a

0.93 ± 0.09a

0.59 ± 0.07b

0.62 ± 0.07b

BOD5 (mg L−1)

1.38 ± 0.34b

2.28 ± 0.95a

1.10 ± 0.18b

1.08 ± 0.17b

COD (mg L−1)

4.5.0 ± 0.65b

5.50 ± 0.23a

4.5.0 ± 1.50b

3.40 ± 0.67c

TP (mg L−1)

0.066 ± 0.012a

0.087 ± 0.009a

0.053 ± 0.001b

0.048 ± 0.016b

DTP (mg L−1)

0.017 ± 0.002b

0.032 ± 0.012a

0.009 ± 0.007c

0.007 ± 0.002c

SRP (mg L−1)

0.008 ± 0.001a

0.011 ± 0.014a

0.003 ± 0.002b

0.003 ± 0.001b

Chla (mg m−3)

15.5 ± 2.5b

21.5 ± 4.5a

11.5 ± 1.5b

9.5 ± 2.5b

  1. Data are means ± stand deviation. In the same row, data with different letter such as a, b, and c indicate significant differences, while data with the same letter indicated insignificant differences at 0.05 level. Data with letters ab were insignificantly different from both data with letter a and data with letter b.
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