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

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

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

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