TABLE 2.

Diversity statistics calculated from TRF profiles of 16S rDNAs amplified from C0, C1, S0, and S1 soil DNA

Enzyme	Index	Diversity statisticsa
		C0	C1	S0	S1
HaeIII	Sb	21	19	18	14d
HhaI	S	14	13	12	11
MspI	S	33	27	24	34
RsaI	S	20	22	20	20
	Avg S	22	20	19	20
HaeIII	Hc	4.13	3.92	3.74	3.49
HhaI	H	3.68	3.52	3.51	3.32
MspI	H	4.78	4.48	4.19	4.72
RsaI	H	3.71	3.74	3.77	3.72
	Avg H	4.07	3.91	3.80	3.81

^aC0, Cosnino interspace; C1, Cosnino rhizosphere; S0, Sunset Crater interspace; S1, Sunset Crater rhizosphere. 

^bPhylotype richness, S, was calculated as the total number of distinct TRF sizes (between 94 and 827 bp) in a profile. 

^cShannon-Weiner diversity index (19) was calculated as follows: H = −Σ(p_i)(log₂ p_i), where p is the proportion of an individual peak height relative to the sum of all peak heights. 

^dBoldface type indicates the lowest value in each series.