. Author manuscript; available in PMC: 2011 Dec 25.

Published in final edited form as: Microb Ecol. 2009 May 16;58(3):569–581. doi: 10.1007/s00248-009-9526-8

Table 5.

Results of CCA for selected chemical variables (%(CO₃ + HCO₃), %Cl, %SO4) based on forward selection and for selected geographical variables (latitude, altitude, lake area)

	DGGE				T-RFLP
	CCA for chemical variables		CCA for geographic variables		CCA for chemical variables		m

Sum of all canonical eigenvalues	1.945		1.945		0.981		0.936
Significance of first canonical axis (P value)	0.004		0.008		0.018		0.002
	Axis 1	Axis 2	Axis 1	Axis 2	Axis 1	Axis 2	Axis 1	Axis 2
Eigenvalue	0.272	0.143	0.246	0.124	0.349	0.322	0.398	0.320
Species–environment correlations	0.930	0.921	0.911	0.930	0.963	0.935	0.973	0.947
Cumulative percentage of species data explained	14.0	21.4	12.6	19.0	9.0	17.4	10.3	18.4
Cumulative percentage of species–environment relationship explained	53.0	80.9	52.5	79.1	35.5	68.4	42.5	76.7
Correlation of environmental parameters to CCA axis
%(CO₃ + HCO₃)	−0.836	0.103			−0.868	0.246
%(Cl)	0.753	0.246			0.824	0.0674
%(SO₄)	0.528	−0.730			0.399	−0.734
Latitude			0.831	0.202			0.237	0.916
Altitude			−0.883	0.129			−0.041	−0.915
Lake area			−0.025	−0.639			−0.942	−0.072