Table 3. Total, unique, and shared OTUs by substrate.

Comparison of the number of OTUs in each of four substrates. The total number of OTUs, the number of unique OTUs in each substrate and the number of OTUs shared between substrates are shown. The total number of shared OTUs is the number of unique OTUs subtracted from the total number. OTUs were filtered to exclude those with a substrate-weighted abundance of less than 0.01%.

	Epiphyte	Endophyte	Litter	Soil
Total OTUs	268	202	421	364
Unique OTUs	5 (2%)	2 (1%)	64 (15%)	212 (58%)
Shared with epiphytes	–	180 (89%)	247 (59%)	57 (16%)
Shared with endophytes	180 (67%)	–	187 (44%)	43 (12%)
Shared with litter	247 (92%)	187 (93%)	–	145 (40%)
Total shared	263 (98%)	200 (99%)	357 (85%)	152 (42%)