Figure 2: Phylum level microbial community composition of pooled replicates in May (nā=ā16) and July 2015 (nā=ā16), with Proteobacteria further divided by class.

Asterisks (*) indicate significant differences of phyla between May and July (paired t-tests; d.f.ā=ā15, Pā<ā0.05). Rare taxa include (in order of decreasing abundance): Acidobacteria, *OP11, Chloroflexi, Parvarchaeota, *WS5, Crenarchaeota, OD1, Gemmatimonadetes, Firmicutes, TM7, OP3, WS3, Chlorobi, Fusobacteria, Spirochaetes, Euryarchaeota, Lentisphaerae, BRC1, SBR1093, Tenericutes, WPS-2, Caldithrix, Fibrobacteres, KSB3, LD1, OP8, PAUC34f, SAR406, Thermi, Elusimicrobia, GN02, NKB19, SR1, VHS-B3ā43, WS2, WWE1, and ZB3.