. 2022 Sep 7;13:988743. doi: 10.3389/fmicb.2022.988743

TABLE 1.

Environmental parameters of each sample from December 2019 to May 2020.

	December 2019			January 2020			May 2020

	P	G	C	P	G	C	P	G	C
Temperature (°C)	16.70 ± 0.2^a	16.73 ± 0.2^a	16.60 ± 0.3^a	14.63 ± 0.1^a	14.53 ± 0.2^a	14.73 ± 0.12^a	23.10 ± 0.54^a	23.13 ± 0.4^a	23.13 ± 0.46^a
Salinity (‰)	30.00 ± 0.0^a	29.83 ± 0.9^a	29.00 ± 1.0^a	27.75 ± 0.5^a	26.83 ± 2.6^a	28.33 ± 1.53^a	25.75 ± 1.5^a	29.0 ± 0.9^b	26.67 ± 0.89^a
NO₃^–-N (mg/L)	0.48 ± 0.02^b	0.52 ± 0.05^a	0.54 ± 0.03^a	0.53 ± 0.08^a	0.41 ± 0.05^b	0.53 ± 0.03^a	0.33 ± 0.01^b	0.29 ± 0.04^a	0.32 ± 0.03^b
PO₄^3–-P (mg/L)	0.028 ± 0.0^a	0.022 ± 0.0^b	0.030 ± 0.0^a	0.033 ± 0.0^a	0.037 ± 0.0^a	0.043 ± 0.01^b	0.028 ± 0.01^a	0.025 ± 0.0^a	0.023 ± 0.01^a
TN (mg/L)	1.72 ± 0.39^a	1.68 ± 0.16^a	1.36 ± 0.05^b	1.13 ± 0.53^ab	1.58 ± 0.37^a	1.04 ± 0.26^b	0.78 ± 0.17^a	1.60 ± 0.12^b	0.67 ± 0.08^a
TP (mg/L)	0.045 ± 0.0^ab	0.050 ± 0.0^a	0.040 ± 0.0^b	0.048 ± 0.0^a	0.064 ± 0.0^b	0.06 ± 0.00^ab	0.042 ± 0.01^a	0.050 ± 0.0^a	0.020 ± 0.01^b
Chl a (μg/L)	2.12 ± 0.84^a	1.51 ± 0.38^a	1.18 ± 0.20^b	1.88 ± 0.16^a	0.97 ± 0.40^b	0.91 ± 0.18^b	2.29 ± 0.61^a	2.09 ± 0.45^a	1.31 ± 0.93^b
BSi (μg/L)	8.03 ± 0.82^b	9.31 ± 0.78^a	6.56 ± 0.52^c	9.43 ± 2.63^ab	11.53 ± 2.3^a	7.93 ± 0.90^b	12.73 ± 4.22^a	11.02 ± 1.6^ab	8.04 ± 2.23^b
DO (mg/L)	12.71 ± 1.1^a	14.66 ± 1.5^a	9.98 ± 1.54^b	11.85 ± 1.45^a	13.27 ± 0.98^a	9.93 ± 0.80^b	8.88 ± 1.01^b	12.39 ± 1.10^a	9.73 ± 0.30^b

Physical and chemical parameters of surface water at the three sampling zones. P, surface water of N. haitanensis cultivation zone; G, surface water of G. lemaneiformis-S. japonica mixed cultivation zone; C, surface water of control zone. Different letters (a, b, c) represent significant differences (p-value < 0.05) in mean value among different water samples by ANOVA.