Table 2. Observed bacterial richness and diversity estimates based on OTUs for La Gileppe, Ry de Rome, and Féronval reservoirs.

					Richnessd	Diversityd
Reservoira	WCb	Seasonc	Filtered reads	OTUs	Chao1 (± sd)	Shannon (± sd)
G	E	Apr	2606	203	445±97	2.9±0.1
G	E	Jul	2149	118	193±37	1.5±0.1
G	E	Oct	2938	131	210±37	2.1±0.1
G	M	Apr	2892	299	774±167	3.3±0.1
G	M	Jul	2819	234	444±82	2.4±0.1
G	M	Oct	2819	294	671±134	3.1±0.1
G	H	Apr	2058	255	581±117	3.3±0.1
G	H	Jul	1559	250	594±125	3.6±0.1
G	H	Oct	2033	303	507±72	4.1±019
RR	E	Apr	2952	340	908±201	3.9±0.1
RR	E	Jul	3211	235	590±140	2.9±0.1
RR	E	Oct	995	178	306±54	3.8±0.1
RR	M	Apr	3621	351	721±123	3.9±0.1
RR	M	Jul	3724	296	627±121	3.6±0.1
RR	M	Oct	1328	243	517±104	4.0±0.1
RR	H	Apr	3575	363	667±102	4.1±0.1
RR	H	Jul	4239	382	769±126	3.8±0.1
RR	H	Oct	1964	321	497±62	4.6±0.1
F	E	Apr	1782	190	289±43	3.7±0.1
F	E	Jul	3660	286	501±80	3.7±0.1
F	E	Oct	3117	381	678±98	4.2±0.1
F	M	Apr	3012	289	559±101	3.9±0.1
F	M	Jul	3053	451	793±101	4.5±0.1
F	M	Oct	4300	555	910±98	4.7±0.1
F	H	Apr	2833	408	830±134	4.6±0.1
F	H	Jul	4883	371	673±99	3.5±0.1
F	H	Oct	3693	654	1278±156	5.0±0.1

^a, G, Gileppe; RR, Ry de Rome; F, Féronval.

^b, Water layer: E, epilimnion; M, metalimnion; H, hypolimnion.

^c, Apr, April 2010; Jul, July 2010; Oct, October 2010.

^d, data for OTU level (0.03 cut-off).