Table 2.

Clone library information.

Sample	Clones	Phylotypes	Chao	ACE	Simpson
NK05 – research reactor	-	-
NK06 – research reactor	69	14	30.0	37.0	4.9
NK07 – research reactor	17	5	6.0	6.4	2.4
NK08 – research reactor	-	-
NK09 – research reactor	91	12	24.3	17.1	1.7
NK10 – research reactor	82	10	11.0	14.2	2.8
NK12 – full-scale (IVAR)	69	18	34.7	40.6	5.9
NK14A – full-scale (IVAR)	97	11	29.0	24.3	2.4
NK14B – full-scale (IVAR)	89	9	9.0	27.5	2.6
NK19 – full-scale (YTV)	74	3	3.5	4.0	1.1

The predicted richness estimates were done based on Chao [39] and Chao & Lee [ACE, [40]], Simpsons reciprocal indices by Simpson [41].