Table 1. Module network graph statistics.

Module	Season	Total oligotypes	SparCC cor threshold 2011a	SparCC cor threshold 2012a	Intersecting vertices (%)b	Intersecting edges (%)b
2	Autumn	584	0.51	0.58	72.6	44.7
7	Winter	458	0.53	0.55	74.9	48.7
5	Winter–Spring	628	0.51	0.56	74.6	35.9
1	Spring	622	0.61	0.61	72.7	40.2
4	Spring–Summer	538	0.62	0.57	74.1	48.7
3	Summer	580	0.52	0.59	53	32
8	Summer–Autumn	254	0.5	0.55	67	48.2

^aSparCC correlation thresholds were determined according to an analysis of network deconstruction across different thresholds (Supplementary Figure S12).

^bIntersecting vertices and edges were calculated using igraph (Csardi and Nepusz, 2006).