Beta diversity of spider communities.

<p>Comparison of spider communities per tree species on the beta diversity level. The density distribution of Morisita-Horn values of 1000 permutations of ten randomly chosen trees visualizes differences in community composition independent of sample size. Beta diversity was largest on oak, followed by spruce and alder trees.</p

Guild distribution.

<p>Box-plots showing characteristic types of distributions of guilds on different tree species. Abbreviation: Space-web weavers = Spa, tangle weavers = Tan, orb-web weavers = Orb, ambushers = Amb, stalkers = Sta, foliage runners = Fol. Guild composition was uniform on most trees (<i>Quercus</i>, <i>Carpinus</i>, <i>Betula</i> and <i>Picea</i>), while <i>Alnus</i> and <i>Pinus</i> were dominated by tangle and orb-web weavers.</p

Diversity of spider communities.

<p>Diversity of spider communities collected by insecticidal knock down from deciduous and coniferous trees in Poland. Rarefaction values (RAF) computed on standardized individual numbers (ind) allow direct comparison suggesting large differences in species diversity among tree species (Qr = <i>Q. robur</i>, Cb = <i>C. betulus</i>, Ag = <i>A. glutinosa</i>, Bp = <i>B. pendula</i>, Pt = <i>P. tremula</i>, Pa = <i>P. abies</i>, Ps = <i>P. sylvestris</i>).</p

Correspondence analyses showing the distribution of spiders on the fogged trees.

<p>Spider communities on deciduous trees and conifers are clearly separated exhibiting a larger similarity within than between groups (A). For both deciduous (B) and coniferous (C) trees, tree-species-specific patterns were identified. No such pattern was found for the oak trees.</p

Co-inertia analysis based on species found at least in three samples.

<p>The data sets of beetles and fungi produced two representations of the sites in two hyperspaces. Analysis aims at maximising inertia in each hyperspace. Only extreme species are plotted. A = Swabian Alb (AEW plots), H = Hainich-Dün (HEW plots), C = Schorfheide-Chorin (SEW plots). The letter at the end of the study plot abbreviation indicates whether sample was collected from the canopy (C) or the ground (G).</p

Boxplots visualising species richness and exponential Shannon diversity of wood-inhabiting fungi (left) and beetles (right).

<p>Mean numbers of beetle species differed significantly between regions (Kruskal p<0.001) while Shannon diversity showed no significant differences due to high unevenness. For wood-inhabiting fungi the regional effects were statistically not significant.</p

Graph visualising significant Spearman correlations (based on 10.000 random permutations) between fungi and beetles in the Hainich data.

<p>Solid lines represent positive correlations while dotted lines denote negative correlations. Fungi MOTUs are shown in red, beetle species in blue.</p

Significant associations between wood-inhabiting fungi and beetles in the Hainich region.

<p>Significant associations between wood-inhabiting fungi and beetles in the Hainich region.</p

Wood Chemistry

Data sheet containing information about the wood compounds used for analyses in the publication

Data of SaproxlyicBeetles

Data sheet containing information about the sampled saproxylic beetle