naa a22 4500 510737498 CHVBK 20180411083016.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11284-013-1043-z doi (NATIONALLICENCE)springer-10.1007/s11284-013-1043-z Beta diversity reconsidered [Elektronische Daten] [Giovanni Bacaro, Margherita Gioria, Carlo Ricotta] A simple analytical procedure to test for differences in beta diversity among sets of plots has been recently presented. Here, we describe an improved randomization procedure that replaces the one previously proposed. This procedure consists of shuffling within-group dissimilarities among groups and disregarding between-group dissimilarities. By repeating this operation many times, a distribution of the test statistics under the null hypothesis of no differences in the mean plot-to-plot dissimilarities within groups is obtained. This procedure ensures that the correct null model is selected. To describe this new procedure, we used plant and water beetle (Coleoptera) data collected from 45 permanent ponds. Beta diversity was compared between plant and water beetle (Coleoptera) assemblages. The Ecological Society of Japan, 2013 Dissimilarities nationallicence Matrix randomization nationallicence Multivariate dispersion nationallicence Null model nationallicence Bacaro Giovanni CNR-IRPI, Istituto di Ricerca per la Protezione Idrogeologica, Via Madonna Alta 126, 06128, Perugia, Italy aut Gioria Margherita Institute of Plant Ecology, Justus-Liebig University Giessen, Heinrich-Buff Ring 26, 35392, Giessen, Germany aut Ricotta Carlo Department of Plant Biology, University of Rome ‘La Sapienza', Piazzale Aldo Moro 5, 00185, Rome, Italy aut Ecological Research Springer Japan 28/3(2013-05-01), 537-540 0912-3814 28:3<537 2013 28 11284 https://doi.org/10.1007/s11284-013-1043-z text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1043-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bacaro Giovanni CNR-IRPI, Istituto di Ricerca per la Protezione Idrogeologica, Via Madonna Alta 126, 06128, Perugia, Italy aut NATIONALLICENCE 700 1- Gioria Margherita Institute of Plant Ecology, Justus-Liebig University Giessen, Heinrich-Buff Ring 26, 35392, Giessen, Germany aut NATIONALLICENCE 700 1- Ricotta Carlo Department of Plant Biology, University of Rome ‘La Sapienza', Piazzale Aldo Moro 5, 00185, Rome, Italy aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/3(2013-05-01), 537-540 0912-3814 28:3<537 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer