Appendix C. Results of ANOVA for belowground abiotic variables, testing for effects of island size and disturbance treatment.

Results of ANOVA for belowground abiotic variables, testing for effects of island size and disturbance treatment

Appendix D. Results of ANOVA for belowground biological and soil activity variables, testing for effects of island size and disturbance treatment.

Results of ANOVA for belowground biological and soil activity variables, testing for effects of island size and disturbance treatment

Appendix A. Measurements of selected ecosystem properties across the island gradient.

Measurements of selected ecosystem properties across the island gradient

Appendix B. Results of ANOVA for plant variables, testing for effects of island size and disturbance treatment.

Results of ANOVA for plant variables, testing for effects of island size and disturbance treatment

Appendix E. Trait values for the three dominant ericaceous plant species present in the study system.

Trait values for the three dominant ericaceous plant species present in the study system

ANOVA results for island size and species effects on lichen traits.

<p>Results are from two-way split-plot ANOVAs testing for the effect of island size class (large, middle, small) as the main plot factor, and lichen species (<i>M. olivacea, H. physodes</i> and <i>P. sulcata</i>) as the sub-plot factor on specific thallus mass (STM) and medullary and cortical secondary compounds measured per unit mass as well as unit area.</p><p>df: IS = 2, 27, S = 2, 54, IS×S = 4, 54, except df for cortical compounds: IS = 2, 27, S = 1, 27, IS×S = 2, 27.</p><p><i>M. olivacea</i> not included in ANOVAs for cortical compounds because all values were zero.</p

Response of lichen secondary compounds to island size.

<p>Values are given for concentrations (mean+SE) of medullary (A and C) and cortical (B and D) carbon based secondary compounds expressed per thallus mass (A–B) as well as per thallus area (C–D) in three lichen species across three island size classes. <i>Melanohalea olivacea</i> lacks cortical compounds and is therefore not included in panels B and D. Letters within species distinguish significant differences (<i>P</i><0.05, Tukey’s <i>post hoc</i> test) between island size class.</p

Relationships between lichen traits and environmental variables.

<p>Values given are Spearman rank correlations between specific thallus mass (STM) and medullary and cortical secondary compounds expressed as per thallus mass as well as per thallus area of three lichens species and a number of environmental variables measured in the soil and on the host tree (<i>B. pubescens</i>) across gradient of 30 islands differing in size. <i>n</i> = 30 islands.</p>*<p>, ** and *** denotes <i>P</i> = 0.05, 0.01 and 0.001, respectively.</p><p>Medullary compounds per unit mass never showed a correlation with any environmental variable and are therefore not included.</p

Response of lichen specific thallus mass to island size.

<p>Values are given for mean+SE of <i>M. olivacea</i>, <i>H. physodes</i> and <i>P. sulcata</i> on large small, medium and small sized islands. Letters on top of bars denotes significant differences (p<0.001, Tukey’s <i>post hoc</i> test) within species. ANOVA results given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0049081#pone-0049081-t001" target="_blank">table 1</a>.</p

Appendix A. Details of catabolic response profile compounds used.

Details of catabolic response profile compounds used