TABLE 4.

Slopes of the change in the read proportions for the different Synechococcus clades with time in days (d^–1) for each treatment, estimated during the first 2 weeks of incubation.

				Initial nutrient addition						Continuous nutrient addition
	Control			NP-I			NPSi-I			NP-C			NPSi-C
	Mean	± S.E.	p	Mean	± S.E.	p	Mean	± S.E.	p	Mean	± S.E.	p	Mean	± S.E.	p
I	0.12	0.12	ns	0.10	0.04	ns	0.77	0.39	ns	0.11	0.02	*	0.47	0.23	ns
II	–5.77	0.63	*	–4.17	1.33	*	–2.43	1.24	ns	–4.45	0.89	*	–5.99	2.00	*
III	5.39	0.49	*	1.54	0.40	*	0.02	0.22	ns	1.44	1.26	ns	0.66	0.48	ns
IV	0.02	0.03	ns	0.06	0.04	ns	0.08	0.05	ns	0.06	0.07	ns	0.00	0.03	ns
V	–0.04	0.08	ns	0.68	0.34	ns	0.08	0.04	ns	0.69	0.31	ns	0.03	0.06	ns
VI	–0.02	0.10	ns	0.84	0.39	ns	0.04	0.04	ns	0.95	0.48	ns	0.19	0.17	ns
VII	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns
VIII	0.03	0.01	ns	0.04	0.02	ns	0.06	0.02	ns	0.04	0.01	*	0.10	0.06	ns
IX	–0.14	0.05	*	–0.10	0.04	ns	0.04	0.03	ns	0.21	0.11	ns	0.18	0.16	ns
XV	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns
WPC1	0.18	0.03	*	0.39	0.13	*	0.50	0.25	ns	0.20	0.11	ns	0.17	0.10	ns
UC-A	0.14	0.03	*	0.12	0.03	*	0.20	0.10	ns	0.13	0.02	*	0.28	0.08	*
5.2	–0.06	0.07	ns	0.44	0.11	*	0.27	0.17	ns	0.11	0.10	ns	0.42	0.23	ns
CRD1	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns	0.00	0.00	ns
Unidentified	0.14	0.07	ns	0.06	0.03	ns	0.38	0.17	ns	0.52	0.10	*	3.49	1.02	*

A t-test was applied to determine statistically significant results (ns: not significant; *p < 0.05).