jzo929-sup-001-appS1.eps12837K Appendix S1. Potential breeding sites (83 ponds) of Rana temporaria, clustered by their habitat characteristics and with their geographical location in the forests (shaded in gray) surrounding the village Fabrikschleichach (marked by a triangle). The ponds were grouped by using Ward's clustering of Euclidean dissimilarity matrix computed from the entire set of collected variables (see Fig. 2; Appendix S2). Ponds which were in close geographic distance, share identical letter combination and colour. Breeding ponds of R. temporaria in 2005 are in bold print and right-aligned. The lack of a geographic signal in environmental parameters, as well as the use of non-similar breeding sites by R. temporaria is apparent. Approximately unbiased (au) and bootstrap (bp) P values (au/bp, 1000 runs) are provided for au ≥ 70% at the respective nodes. The x-axis is not continuous.
jzo929-sup-002-appS2.doc51K Appendix S2. Descriptions of habitat variables assessed at 83 potential breeding ponds of Rana temporaria in Fabrikschleichach, northern Bavaria, Germany. Unless otherwise specified, we used following data formats (DF): b = binomial: presence/absence, c = categorical: five categories (0–20%, 21–40%, 41–60%, 61–80%, 81–100%), con = continuous: measured value, n = nominal.
jzo929-sup-003-appS3.eps2301K Appendix S3. Summary of parameter variability of potential Rana temporaria breeding sites in northern Bavaria, Germany. Given is the distribution of measured values for the respective variables for 83 ponds in the study area. The frequency of values is always shown on the y-axis. For details of parameters assessed, see Appendix S2. (a-d) leaf litter coverage (1, 5, 10, 20 m), (e-h) moss coverage (1, 5, 10, 20 m), (i-l) herb coverage (1, 5, 10, 20 m), (m-p) shrub coverage (1, 5, 10, 20 m), (q-t) leaf litter depth (1,5,10,20 m), (u-x) tree density (1,5,10,20 m), (y) duckweed, (z) plants, (aa) shore vegetation, (ab) underwater vegetation, (ac) free-water surface, (ad) water temperature, (ae) pH, (af) EC, (ag) inflow, (ah) water course, (ai) pond bottom, (aj) forest type, (ak) location, (al) newts, (am) turbidity, (an) water depth, (ao) sediment depth, (ap) volume, (aq) canopy, (ar) saprobel.
jzo929-sup-004-appS4.eps2121K Appendix S4. Visualisation of dissimilarity of potential Rana temporaria breeding sites in northern Bavaria, Germany. Ponds, which were frequently used (5–7 years) within a 7 year monitoring (2005–2011) are compared to never used ones and plotted based on the two-dimensional solution of non-metric multidimensional scaling (NMDS, stress = 18.99) of their habitat variables recorded in 2005 (compare Appendix S3 for details). Black (used in 2005) and grey (not used in 2005) dots indicate ponds frequently used for breeding by R. temporaria, white dots indicate ponds, which were never used within monitoring period. Environmental vectors with P < 0.01 are included and indicate the most rapid change in the indicated parameter (direction of the vectors) and the strength of the gradient (length of the vector). There is no visible pattern in frequently and never used breeding ponds of R. temporaria, based on the assessed parameters, in our study area. (a) duckweed, (b) underwater vegetation, (c) herb coverage (20 m), (d) moss coverage 10 m, (e-f) herb coverage (1,10 m), (g) shrub coverage (20 m), (h) herb coverage (5 m), (i) canopy, (j) water depth, (k) volume, (l) forest type, (m) water course, (n) tree density (10 m), (o) location, (p-s) leaf litter coverage (20, 10, 1, 5 m), (t) turbidity, (u) sediment depth.

Please note: Wiley Blackwell is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.