caa a22 4500 445892919 CHVBK 20180317145622.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10750-010-0564-5 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0564-5 Relation between nematode communities and trophic state in southern Swedish lakes [Elektronische Daten] [Kai Ristau, Walter Traunspurger] The aim of this study was to examine whether littoral nematode community patterns are shaped by lake trophic state. It was hypothesized that trophic level is associated negatively with the proportion of omnivores and positively with the percentages of bacterial feeders, but not at all with the diversity, abundance, and biomass of freshwater nematodes. Sediment samples were taken at littoral sites of eight southern Swedish lakes of different trophy in spring and autumn 2007. Trophic level was found to strongly influence species richness, as oligotrophic and mesotrophic lakes supported the greatest species numbers, whereas nematode abundance, biomass, and Shannon index were unaffected. Furthermore, our results indicated effects on the nematode community's trophic structure, with a larger proportion of predatory nematodes in oligotrophic and mesotrophic lakes but no differences in the other feeding types (bacteria, algae and suction feeders, omnivorous species). Multivariate analysis indicated a shift in species compositions along the threshold from mesotrophic to eutrophic conditions, with the presence of Tobrilus gracilis, Monhystera paludicola, Brevitobrilus stefanskii, and Ethmolaimus pratensis related to the latter. Nematode communities in oligotrophic and mesotrophic lakes were characterized by a similar species composition, with pronounced occurrences of Eumonhystera longicaudatula, Semitobrilus cf. pellucidus, Prodesmodora circulata, and Rhabdolaimus terrestris. Overall, the results suggested that lake trophic state is a major factor structuring littoral nematode communities, although intra-lake variations might be of importance as well. Springer Science+Business Media B.V., 2010 Community patterns nationallicence Diversity nationallicence Feeding types nationallicence Bioindicators nationallicence Lake trophy nationallicence Ristau Kai Department of Animal Ecology, Bielefeld University, Morgenbreede 45, 33615, Bielefeld, Germany aut Traunspurger Walter Department of Animal Ecology, Bielefeld University, Morgenbreede 45, 33615, Bielefeld, Germany aut Hydrobiologia Springer Netherlands 663/1(2011-03-01), 121-133 0018-8158 663:1<121 2011 663 10750 https://doi.org/10.1007/s10750-010-0564-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0564-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ristau Kai Department of Animal Ecology, Bielefeld University, Morgenbreede 45, 33615, Bielefeld, Germany aut NATIONALLICENCE 700 1- Traunspurger Walter Department of Animal Ecology, Bielefeld University, Morgenbreede 45, 33615, Bielefeld, Germany aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 663/1(2011-03-01), 121-133 0018-8158 663:1<121 2011 663 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer