A cross-city molecular biogeographic investigation of arbuscular mycorrhizas in Conyza canadensis rhizosphere across native and non-native regions

Ecological Processes

Table 2 Comparison of AMF partial SSU rRNA gene library composition from replicate soil samples of Conyza canadensis

Clone library and soil samples	Number of clones	Number of SGs	Number of SGs unique to library	Percent coverage ^a	Number of SGs found in at least two libraries in the same system	Rarefaction for number of clones ^b
QAMF2	43	4	0	100	4	3.8 (35)
QAMF 3	44	5	1	97.7	4	4.4 (35)
QAMF4	48	5	2	95.8	3	4.7 (35)
IAMF1	43	4	1	95.7	3	3.8 (35
IAMF2	39	2	0	100	2	2.0 (35)
IAMF3	39	3	1	97.4	2	3.0 (35)
IAMFC1	90	3	2	97.8	1	2.6 (35)
IAMFC2	86	2	0	100	1	1.9 (35)

Drawn from native North American (QAMF) and introduced Kashmir Himalayan (IAMF) regions with reference to uninvaded control samples (IAMFC) in the introduced region. ^aPercent coverage of the clone libraries is defined by the equation C = 1 − (n1/N), where n1 is the number of clones that occurred only once (frequency = 1), and N is the total number of clones examined (Good, I.L. 1953. The population frequencies of species and the estimation of population parameters. Biometrika 40, 237-264). ^bRarefaction predicts the diversity that would probably be observed in sample of reduced size (Foote, M. 1992. Rarefaction analysis of morphological and taxonomic diversity. Paleobiology 18, 1-16).