Table 2. Phosphorus pools in the mesocosms on day 21 and 42 for the four treatments.

	SRP		TDP		Seston P		Total P		Sediment P
	(μmol L-1)		(μmol L-1)		(μmol L-1)		(μmol L-1)		(mmol kg-1)
Treatment	D21	D42	D21	D42	D21	D42	D21	D42	D21	D42
U	0.31 a	0.30	1.39 a	1.40	1.09 a	1.06 a	2.47 a	2.46 a	1.16 a	1.23 a
	(0.09)	(0.05)	(0.25)	(0.10)	(0.11)	(0.22)	(0.24)	(0.32)	(0.20)	(0.28)
P	0.33 a	0.36	1.24 a	1.56	2.71 b	1.77 * bc	3.95 b	3.34 bc	1.44 b	1.71 b
	(0.10)	(0.14)	(0.28)	(0.15)	(0.33)	(0.23)	(0.59)	(0.27)	(0.30)	(0.18)
NP16	0.27 ab	0.33	1.15 ab	1.38	3.03 b	1.64 * b	4.17 b	3.03 * b	1.47 b	1.54 b
	(0.12)	(0.05)	(0.40)	(0.09)	(0.26)	(0.12)	(0.62)	(0.13)	(0.16)	(0.20)
NP75	0.19 b	0.35 *	0.86 b	1.49 *	3.29 b	2.16 * c	4.15 b	3.64 c	1.65 b	1.61 b
	(0.08)	(0.08)	(0.25)	(0.25)	(0.68)	(0.49)	(0.71)	(0.34)	(0.15)	(0.08)

Each value represents the average and one standard deviation in parentheses. Different bolded letters indicate significant differences between the treatments within day, based on randomized block ANOVA.

* on day 42 denotes a significant change from day 21 based on Student’s t-test.