. 2013 Mar 5;1:e47. doi: 10.7717/peerj.47

Table 2. Changes in biogeochemical parameters.

Biogeochemical parameters of microcosms and undisturbed soil samples of each site for the last sampling date, 12 months (n = 3). Mean ± SD with F values and significance levels.

					Effect
					Treatment	Site	Site* treatment
	Dry Lagoon undisturbed	Dry Lagoon microcosms	River undisturbed	River microcosms	F values
TOC (mg.g⁻¹)	2.9 ± 0.3	2.9 ± 0.2	23.2 ± 3.9	4 ± 1.7	19.7 ^**	24.8^**	19.9^**
TN (mg.g⁻¹)	0.2 ± 0.005	0.24 ± 0.015	1.1 ± 0.2	0.7 ± 0.06	5.02^ns	54.7^***	6.6^ns
TP (mg.g⁻¹)	0.023 ± 0.001	0.024 ± 0.001	0.06 ± 0.008	0.04 ± 0.006	2.3^ns	26.9^***	5.2^ns
DOC (µg.g⁻¹)	13.5 ± 9.4	94.3 ± 35.4	20.4 ± 9.4	110 ± 12.3	0.2^ns	38.8^***	0.008^ns
DON (µg.g⁻¹)	1.4 ± 0.5	8.2 ± 4.5	0.5 ± 0.12	9.5 ± 0.6	24.2^***	0.15^ns	2.8^ns
DIP (µg.g⁻¹)	0.0 ± 0	0.005 ± 0.003	0.0 ± 0	0.004 ± 0.004	3.7^ns	0.36^ns	0.032^ns
DOP (µg.g⁻¹)	1.5 ± 0.04	1.8 ± 0.06	1.1 ± 0.05	1.43 ± 0.04	45.5^***	77.82^***	0.2^ns
Ammonium (µg.g⁻¹)	0.95 ± 0.2	1.3 ± 0.1	0.6 ± 0.1	1.45 ± 0.1	13.4^**	0.26^ns	3.06^ns
Nitrates (µg.g⁻¹)	0.8 ± 0.4	0.34 ± 0.2	0.0 ± 0	0.0 ± 0	0.86^ns	5.4^*	0.85^ns
MicC (µg.g⁻¹)	43.5 ± 20	92.1 ± 25.7	206 ± 17	219 ± 38	1.4^ns	32^***	0.46^ns
MicN (µg.g⁻¹)	4.9 ± 0.7	2.1 ± 0.3	11.2 ± 2.6	5.5 ± 0.5	9.1^*	12.3^**	1.05^ns

Notes.

P < 0.05.

^**

P < 0.01.

^***

P < 0.0001.

^ns

not significant.