Impact of human disturbances on soil cyanobacteria diversity and distribution in suburban arid area of Marrakesh, Morocco

Ecological Processes

Table 2 Physicochemical properties of sampled soils

Parameter		pH	EC	H	TOC	PO₄-P	NH₄-N	NO₃-N
S1	F	9.04^a±0.01	180.3^f±1.80	6.55^f±0.05	0.63^f± 0.03	0.17^f±0.00	0.02^d±0.00	0.07^b±0.00
S1	M	8.03^a±0.00	179.8^f± 1.80	3.90^f±0.01	0.43^f± 0.03	0.16^f± 0.01	0.01^d±0.00	0.07^b±0.00
S2	F	7.16^d±0.00	517.5^e± 52.50	15.47^c±0.05	3.61^c± 1.85	0.96^d±0.12	0.02^d±0.00	0.09^b±0.01
S2	M	7.64^b±0.00	488.45^e± 8.45	12.84^c±0.02	2.22^d± 1.11	0.82^d±0.12	0.02^d±0.00	0.08^b±0.00
S3	F	7.29^c±0.02	698.5^d± 2.50	26.04^a±0.31	5.26^b± 0.00	1.03^c± 0.06	0.10^c±0.00	0.13^a±0.00
S3	M	7.65^b± 0.07	667.5^d± 2.50	19.70^a±0.08	4.44^c± 1.11	1.02^c± 0.16	0.11^c±0.00	0.10^a±0.00
S4	F	7.33^c± 0.02	3175^a±5.00	8.07^d±0.02	7.40^a± 1.05	2.03^a ±0.10	0.14^a±0.00	0.17^a±0.01
S4	M	7.77^b±0.00	3127.5^a± 2.50	7.95^e±0.03	6.66^a± 1.33	1.58^a± 0.01	0.16^a±0	0.15^a±0.01
S5	F	7.20^d± 0.20	856^c±4.00	18.58^b±0.17	6.66^a±0.00	1.28^b±0.15	0.12^b±0.00	0.15^a±0.01
S5	M	7.10^c± 0.30	910^c± 20.00	16.90^b±0.01	5.55^b± 1.11	1.19^b±0.01	0.11^b±0.00	0.13^a±0.00
S6	F	7.54^b±0.01	2250^b± 10.00	7.50^e±0.08	1.85^d± 1.85	0.72^e± 0.09	0.01^d±0.00	0.03^c±0.00
S6	M	7.31^c ± 0.17	2136.5^b± 3.50	8.92^d±0.02	1.66^e± 0.83	0.41^e± 0.04	0.01^d ±0.00	0.05^c±0.00
Significance
Total effect of disturbance (A)		***	***	***	***	***	***	*
Total effect of sampling time (B)		NS	***	***	***	***	NS	***
A × B		***	***	***	***	***	***	*

The values are denoted as mean ± standard error (n=3). Values with the same letters within each column indicate no significant difference (p<0.05) by Tukey test. NS not significant, *p<0.05 significant differences, ***p<0.001 highly significant differences using two-way ANOVA and Tukey test, EC electrical conductivity in (μs/cm), H humidity in (%); TOC: Total organic carbon in (% C); NH₄-N: Ammonium nitrogen in (%); NO₃-N: Nitrate nitrogen in (%); PO₄-P: available phosphorus in (mg/g soil). F: February; M: May. PO₄-P available phosphorus in (mg/g soil), F February, M May