TABLE 2.

Number of sequences of each OTU and richness per plant species and per soil type

OTU	No. of sequences in:									Total no. (%) of sequences
	Gypsum soil						Marly-limestone soil
	Gypsophytes			Gypsovags
	Launaea pumila	Ononis tridentata	Anthyllis terniflora	Globularia alypum	Helianthemum squamatum	Helichrysum stoechas	Anthyllis terniflora	Globularia alypum	Helichrysum stoechas
P1			2							2 (0.27)
P2							2			2 (0.27)
P3							2			2 (0.27)
P4			2							2 (0.27)
P5		2	2	6			14	10	8	42 (5.72)
Ar1					2					2 (0.27)
ScuI				2						2 (0.27)
Re1						2				2 (0.27)
Cl1						2				2 (0.27)
Cl2		2	2				2		2	8 (1.09)
Cl3			2							2 (0.27)
Cl4								2		2 (0.27)
Cl5			2	2	2			2	9	17 (2.32)
Cl6		2					2			4 (0.54)
G1	14	6	5	13	7	2	10	3	26	86 (11.72)
G2				2			2	2		6 (0.82)
G3	2									2 (0.27)
G4				2						2 (0.27)
G5					2					2 (0.27)
G6				2	2			2	2	8 (1.09)
G7									3	3 (0.41)
G8		3					12	14	13	42 (5.72)
G9	8	7	4	2	2					23 (3.13)
G10			2	18	6	7				33 (4.5)
G11				2						2 (0.27)
G12	2			2			3		2	9 (1.23)
G13		2							2	4 (0.54)
G14	2		2			3	2			9 (1.23)
G15		5	2	2	2			7	3	21 (2.86)
G16									2	2 (0.27)
G17	4		2							6 (0.82)
G18	2	5				2		4	5	18 (2.45)
G19			2	2						4 (0.54)
G20		6								6 (0.82)
G21					2					2 (0.27)
G22		4	2	3			2		2	13 (1.77)
G23				2						2 (0.27)
G24	47	6	14	16	11	24	4	2	24	148 (20.16)
G25	16	13	34	5	15	26	6	2	13	130 (17.71)
G26					2					2 (0.27)
D1			2							2 (0.27)
D2				2				2	2	6 (0.82)
Fu1			2				2			4 (0.54)
Fu2	2	2	7		2		5		5	23 (3.13)
S1				2						2 (0.27)
Rh1		2	10				4	2	3	21 (2.86)
Total	99	67	102	87	57	68	74	54	126	734 (100)
Richnessa	10	15	20	19	13	8	16	13	18

^aTotal OTUs.