Supplementary Information
Fig. S1. Variance partitioning of the Hellinger-transformed distance abundance matrix for
damselfly genera and species of Enallagma among lakes. The explained variances are based on a
partial redundancy analysis. Only the pure spatial (S) and pure environmental (E) components
are testable. The unexplained variation refers to variation not accounted for by the S, E, or ES
fractions. ***P<0.001; N.S. P>0.05.
Fig. S2. Ordination plots from the partial RDA of damselfly genera and Enallagma species
composition of Hellinger-transformed abundances among lakes. Significance of spatial and
environmental fractions is given in Figure S1. Panels a and c are Enallagma species and genera,
respectively, ordinations of the environmental RDA controlling for space, whereas panels b and
d are Enallagma species and genera, respectively, ordinations of the space RDA controlling for
environment. Taxa or sites (grey circles) aligned with the direction of arrows show positive
associations with those explanatory variables. The bottom and left-hand scales are for the
response variables and objects, whereas the top and right-hand scales are for the explanatory
variables. In panel ‘a’ the trajectory for uS is obscured below the cloud of data points and is
located just above the species point E. signatum.
1
E = ***, S = ***
E = ***., S = n.s.
0.2
0.4
0.6
0.8
Unexplained
Space
Environment+Space
Environment
0.0
Percent variation explained (Hellinger distance)
1.0
Figure S1
Genera
E nal l agma species
2
3
4